Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 9026. Отображено 100.
04-02-2020 дата публикации

Установка для производства органических связующих из зерна, предназначенных для изготовления окатышей

Номер: RU0000195712U1
Автор: Дмитрий Николаевич Харитонов
Принадлежит: Дмитрий Николаевич Харитонов

Установка для производства органических связующих металлургических добавок относится к области: конструктивные элементы вообще; сборные конструкции, состоящие из этих элементов. Указанная установка служит для более полной переработки зерна в органическую связующую металлургическую добавку (СМД) и упрощения производственного процесса органических СМД. Установки для производства органических связующих металлургических добавок могут использоваться индивидуальными предпринимателями и организациями для экономичного производства СМД.Сущностью описываемой полезной модели является включение в производственный процесс после получения полуфабриката СМД из щелочи и зерна смесительной установки специально модифицированной путем заточки лопастей встречно вращающихся роторов и уменьшения расстояния между роторами на оси таким образом, что указанная установка будет служить не только перемешиванию полуфабриката СМД, но и перетиранию зерновой шелухи, которая в этом состоянии может вступить в реакцию со щелочью и принять участие в создании дополнительного количества СМД (см. фиг. 1). РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 195 712 U1 (51) МПК C22B 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК C22B 1/00 (2019.08) (21)(22) Заявка: 2019125334, 09.08.2019 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Харитонов Дмитрий Николаевич (RU) Дата регистрации: 04.02.2020 Приоритет(ы): (22) Дата подачи заявки: 09.08.2019 (45) Опубликовано: 04.02.2020 Бюл. № 4 1 9 5 7 1 2 R U (54) Установка для производства органических связующих из зерна, предназначенных для изготовления окатышей (57) Реферат: Установка для производства органических Сущностью описываемой полезной модели связующих металлургических добавок относится является включение в производственный процесс к области: конструктивные элементы вообще; после получения полуфабриката СМД из щелочи сборные конструкции, состоящие из этих и зерна ...

Подробнее
Номер записи: 1
10-05-2012 дата публикации

Metal Recovery Process

Номер: US20120114539A1
Автор: Brian Matthew Dey, Keith Phillip Williams, Robert John Bowell
Принадлежит: Minex Technologies Ltd

A process for recovering a metal chloride or mixed metal chloride from a solid waste material comprising recoverable metal containing constituents produced by lead, copper or zinc smelting and refining processes, said process comprising the steps of: (i) heating the solid waste material; (ii) treating the heated material of step (i) with a gaseous chloride to form a gaseous metal chloride containing product; and (iii) treating the gaseous metal chloride containing product of step (ii) to recover the metal chloride or mixed metal chloride. The metal chloride may be further treated to extract the metal itself.

Подробнее
Номер записи: 2
03-01-2013 дата публикации

Apparatus for the production of yellowcake from a uranium peroxide precipitate

Номер: US20130004379A1
Автор: Glenn Jobling
Принадлежит: ADELAIDE CONTROL ENGINEERS PTY LTD

The present invention provides apparatus for the production of a uranium yellowcake from a uranium peroxide precipitate, the peroxide precipitate being in the form of a low solids content, uranium rich feed slurry, the apparatus including: a. a thickener for thickening the feed slurry to produce a thickener underflow with a solids content in the range of 15 to 50% w/w and a thickener overflow; b. a means for dewatering the thickener underflow to produce a solids cake with a solids content of at least 50% w/w and a dewater overflow; and c. an indirectly heated kiln for heating the solids cake at a temperature suitable to produce either a calcined uranium trioxide yellowcake or a dried uranium peroxide yellowcake.

Подробнее
Номер записи: 3
31-01-2013 дата публикации

Method for leaching zinc from a zinc ore

Номер: US20130025412A1
Автор: Garry Mervyn Johnston, Matthew Leslie Sutcliffe, Nicholas James Welham
Принадлежит: Metaleach Ltd

A method for leaching zinc from a zinc-bearing carbonate ore, the method comprising the steps of: subjecting the zinc-bearing carbonate ore to elevated temperatures of between about 300° C. and about 900° C. thereby producing a roasted ore; subjecting the roasted ore to an aqueous acid or alkali leach thereby producing an aqueous zinc solution; and subjecting the aqueous zinc solution to a zinc recovery step.

Подробнее
Номер записи: 4
28-03-2013 дата публикации

Method for producing raw material for ferronickel smelting from low grade nickel oxide ore

Номер: US20130074653A1
Автор: Hiroshi Kobayashi, Junichi Takahashi, Keisuke Shibayama, Norihisa Toki, Osamu Nakai, Takayuki Nakai, Toshirou TAN, Yoshitomo Ozaki
Принадлежит: SIMITOMO METAL MINING CO Ltd

Provided is a method for producing ferronickel from a nickel sulfide or a mixed sulfide containing nickel and cobalt, obtained by hydrometallurgy of nickel oxide ore or obtained from scraps or products in process. The method for producing a ferronickel raw material is to form the ferronickel raw material from a nickel sulfide or a mixed sulfide containing nickel sulfide and cobalt sulfide, wherein treatments are performed through the following steps: (1) redissolution step, (2) deferrization step, (3) solvent extraction step, (4) hydroxylation step, (5) roasting step, and (6) washing and calcining step.

Подробнее
Номер записи: 5
23-05-2013 дата публикации

Process for Melting Scrap Metal

Номер: US20130125707A1
Автор: Jarry Luc, Tsiava Remi
Принадлежит: L'Air Liquide Societe Anonyme Pour L'Elide Et L'Exploitation Des Procedes Georges Claude

Process for melting scrap metal in a furnace comprising the steps of feeding a charge of solid scrap metal to the furnace, supplying fuel and an oxygen-rich oxidant to the furnace and combusting the fuel with the oxidant to generate heat inside the furnace, melting the charge of solid scrap metal in the furnace by means of the heat, withdrawing the molten metal from the furnace. Following the step of feeding the charge of solid scrap metal to the furnace, the fuel is combusted with the oxidant so as to generate one or more visible flames in the furnace above the charge and before the step of withdrawing the molten metal from the furnace, the fuel is combusted with the oxidant so as to generate flameless combustion in the furnace above the molten metal. 115-. (canceled)16. A process for melting scrap metal in a furnace , comprising the steps of:feeding a charge of solid scrap metal to the furnace;supplying fuel and an oxidant having an oxygen content of at least 60% vol to the furnace and combusting the fuel with the oxidant to generate heat inside the furnace;melting the charge of solid scrap metal in the furnace by means of the heat so generated, thereby obtaining molten metal; following said step of feeding the charge of solid scrap metal to the furnace, the fuel is combusted with the oxidant in a first combustion mode so as to generate one or more visible flames in the furnace above the charge, and', 'before said step of withdrawing the molten metal from the furnace, the fuel is combusted with the oxidant in a second combustion mode so as to generate flameless combustion in the furnace above the molten metal., 'withdrawing the molten metal from the furnace, wherein said step of supplying and combusting the fuel and oxidant is performed such that17. The process of claim 16 , wherein the one or more visible flames have a fixed orientation in the first combustion mode.18. The process of claim 16 , wherein an orientation of at least one of said one or more visible ...

Подробнее
Номер записи: 6
06-06-2013 дата публикации

PARTIALLY-REDUCED IRON PRODUCING METHOD AND PARTIALLY-REDUCED IRON PRODUCING APPARATUS

Номер: US20130139647A1
Автор: Kamikawa Susumu, Nakajima Hiroshi, Pham Khanhson, Sato Keiichi
Принадлежит: MITSUBISHI-HITACHI METALS MACHINERY, INC.

A reduction furnace includes a pellet material supplying device forming on a grate an ignition carbon material layer having a predetermined height; an ignition device; and an exhaust gas circulation device supplying an oxygen-containing gas comprising circulated exhaust gas mixed with air, to a packed bed of the pellets heated by a combustion heat of the ignition carbon material layer. A partially-reduced iron is produced by thermally reducing the pellets through a combustion region for the ignition carbon material layer and a heating region, the combustion region formed upstream in a travelling direction of the grate by supplying a gas having a high oxygen concentration, the heating region formed downstream of the combustion region by supplying a gas having a low oxygen concentration. 1. A partially-reduced iron producing method comprising the steps of:laying an ignition carbon material to a predetermined height on an endless grate;igniting the ignition carbon material, and then packing raw-material pellets on the ignited ignition carbon material, the raw-material pellets formed by mixing and pelletizing a reduction carbon material and a raw material containing iron oxides;causing a flammable volatile component to be generated from the reduction carbon material in the raw-material pellets and combust, by use of a combustion heat of the ignited ignition carbon material;causing a temperature of the raw-material pellets to further rise by use of a combustion heat of the flammable volatile component, so that a reduction reaction proceeds and a carbon monoxide gas is generated, while causing the raw-material pellets adjacent thereto to be heated by use of the combustion heat, so that a flammable volatile component is generated from the reduction carbon material in the adjacent portions of the raw-material pellets;increasing a concentration of the carbon monoxide gas near the raw-material pellets having the temperature further raised, to a combustion range of the carbon ...

Подробнее
Номер записи: 7
06-06-2013 дата публикации

WASTE HANDLING METHODS AND APPARATUS

Номер: US20130139650A1
Автор: Gibbs Andrew, Peel Alan
Принадлежит: ALTEK EUROPE LIMITED

Apparatus and a method of handling a molten metal processing by-product are provided in which the by product is placed in a container unit and put in the apparatus, the apparatus including an element having a first position outside of the container and a second position in which at least a part of the element is in the container so as to compress the by-product and exclude oxygen from it. The element also serves to transfer heat from the contents of the container unit to the element and so provide cooling. The element can then be returned to the first position, the container unit be removed and placed at a cooling location for final cooling. 1. A method of handling a molten metal processing by-product , the method including:providing a container unit;providing the by-product in the container unit;providing apparatus, the apparatus including an element having a first position outside of the container and a second position in which at least a part of the element is in the container;providing the container unit in the apparatus;moving the element from the first position to the second position;transferring heat from the contents of the container unit to the element;compressing at least a part of the contents of the container unit;moving the element from the second position towards the first position;removing the container unit from the apparatus; andpositioning the container unit at a cooling location.2. A method according to in which the transition from the first to the second position and/or transferring heat from the contents of the container unit claim 1 , causes an oxygen impermeable and/or oxygen flow inhibiting layer to form on the by-product.3. A method according to in which the transition from the first position towards the second position provides one or more of:a) forcing oxygen out of the by-product and/or receiving location;b) reducing the permeability of one or more parts of the by-product;c) reducing the temperature of one or more parts of the by-product; ...

Подробнее
Номер записи: 8
20-06-2013 дата публикации

SYSTEMS AND METHODS FOR METAL RECOVERY

Номер: US20130153436A1
Автор: Baughman David R., Bolles Thomas R., Hazen Wayne W., May Lawrence D., Robertson Joanna M., Smith Jay C.
Принадлежит: FREEPORT-MCMORAN CORPORATION

Various embodiments provide a process roasting a metal bearing material under oxidizing conditions to produce an oxidized metal bearing material, roasting the oxidized metal bearing material under reducing conditions to produce a roasted metal bearing material, and leaching the roasted metal bearing material in a basic medium to yield a pregnant leach solution. 1. A process comprising:roasting a metal bearing material under oxidizing conditions to produce an oxidized metal bearing material;roasting the oxidized metal bearing material under reducing conditions to produce a roasted metal bearing material; andleaching the roasted metal bearing material in a basic medium to yield a pregnant leach solution.2. The process of claim 1 , wherein the basic medium comprises at least one of ammonia claim 1 , ammonium carbonate and ammonium sulfate.3. The process of claim 1 , wherein the oxidizing conditions comprise an oxygen gas containing atmosphere.4. The process of claim 1 , wherein the reducing conditions comprise a hydrogen gas containing atmosphere.5. The process of claim 1 , further comprising subjecting the pregnant leach solution to a solution extraction to yield a loaded aqueous stream.6. The process of claim 5 , wherein an extraction stage of the solution extraction circuit yields a cobalt-bearing raffinate.7. The process of claim 6 , precipitating cobalt from the cobalt-bearing raffinate.8. The process of claim 7 , wherein the precipitating yields cobalt sulfide in a solid phase.9. The process of claim 7 , wherein the cobalt sulfide is subjected to leaching.10. The process of claim 5 , subjecting the loaded aqueous stream to electrowinning.11. A system comprising:an oxidizing roaster configured to receive oxygen gas and configured to heat a metal bearing material to temperatures of from about 200° C. to about 800° C.;a reducing roaster configured to receive at least one of carbon monoxide gas and hydrogen gas and configured to heat the metal bearing material to ...

Подробнее
Номер записи: 9
04-07-2013 дата публикации

METHOD FOR INCINERATING CARBON-CONTAINING DRY METALLIC ASH

Номер: US20130167760A1
Автор: Ritschel Norbert, Schapp Jan, Voß Steffen
Принадлежит: Heraeus Precious Metals GmbH & Co. KG

The invention relates to a method for incinerating carbon-containing dry metallic ash and a pertinent device. The method comprises the steps of 1. A method for incinerating carbon-containing dry metallic ash , the method comprising the steps of:a) adding the metallic ash into a trough;b) aerating from above with ambient air;c) injecting air and/or oxygen through a hearth of the trough;d) establishing an ignition temperature;e) stirring of the metallic ash by means of a suitable tool;f) whereby a carbon content of the metallic ash is reduced to less than 3%; andwhereby steps b), c), and d) can proceed concurrently or in alternating order or pairs or all of these steps can proceed concurrently; andsteps b) and c) proceed concurrently, at least for part of the time;step d) can just as well proceed selectively in partial quantities of the metallic ashwherein a reverse transport of metallic ash through the hearth of the trough is prevented, whereas the supply of air and/or oxygen is maintained.2. A device claim 1 , for implementing the method according to claim 1 , comprising{'b': '1', 'g) a trough (a)'}{'b': '2', 'h) having a level hearth (b),'}{'b': 2', '3, 'i) whereby hearth (b) comprises openings (c),'}{'b': 4', '2', '4, 'i': 'a', 'j) with metal fibers (d) being arranged below hearth (b) and forming a space (d), which is closed in downward direction through'}{'b': 5', '2, 'k) another trough hearth (e) that is arranged parallel to hearth (b)'}{'b': 6', '3, 'l) having further openings (f) that are arranged at an offset from said openings (c), whereby'}{'b': 5', '2', '7', '4, 'm) hearth (e) and hearth (b) are connected by means of connecting means (g) in such manner that metal fibres (d) are firmly occluded, and'}{'b': 8', '5, 'n) a space (h) is provided below hearth (e) to which'}{'b': '9', 'o) means (i) for supplying air or oxygen are provided.'}3. A device according to claim 2 , the device comprising:{'b': '8', 'j) flow guides for optimising air circulation are ...

Подробнее
Номер записи: 10
29-08-2013 дата публикации

Method, Arrangement and Pelletising Plant

Номер: US20130220075A1
Автор: Fredriksson Christian, Savonen Stefan
Принадлежит: LUOSSAVAARA-KIIRUNAVAARA AB

This invention concerns a method for the oxidation and sintering of pellets arranged in a compartment in which the oxidation and sintering take place with the aid of a medium with a defined temperature, which medium heats the pellets The method comprises the introduction of a first medium into the compartment through an inlet connected to the compartment and the heating of the medium in the inlet through the use of a combustion arrangement or a part of a combustion arrangement, arranged in the inlet and comprising fuel where the use of the combustion arrangement comprises the ignition of the fuel, the combustion of the fuel whereby combustion heat is developed, and the transfer of combustion heat to the first medium that is present at the combustion arrangement The method is characterised by the arrangement of the combustion arrangement or a part of it, in a region A in the inlet that in turn is arranged outside of the direct passage of the first medium in and through the inlet such that the ignition of the fuel, the combustion of the fuel and the transfer of combustion heat to the first medium take place in this region A, and by the introduction of a second medium into the region A in the direct vicinity of the combustion arrangement or a part of it, where the ignition of the fuel, the combustion of the fuel and the transfer of combustion heat also to the second medium take place followed by further transport of the heated first medium and the heated second medium through the inlet and into the compartment The invention concerns also an arrangement and a pelletising plant 1. A method for the oxidation and sintering of pellets arranged in a compartment in which the oxidation and sintering take place with the aid of a medium with a determined temperature that heats the pellets , the method comprising:introducing a first medium into the compartment through an inlet connected to the compartment;heating the medium in the inlet through the use of a combustion arrangement ...

Подробнее
Номер записи: 11
29-08-2013 дата публикации

METHOD, ARRANGEMENT, AND PELLETISING PLANT

Номер: US20130220076A1
Автор: Fredriksson Christian, Savonen Stefan
Принадлежит: LUOSSAVAARA-KIIRUNAVAARA AB

This invention concerns a method for the heating of a medium in a compartment in which pellets are arranged to be oxidised and sintered with the aid of the hot medium. The method comprises the introduction of a first medium into the compartment through an inlet and the heating of the first medium when it is present in the inlet The heating takes place through the use of a combustion arrangement or a part of such an arrangement, that is arranged in the inlet and that comprises fuel. The heating, the use of the combustion arrangement comprises in turn the ignition of the fuel, combustion of the fuel whereby combustion heat is developed, and the transfer of the combustion heat to the first medium that is present at the combustion arrangement in the inlet The combustion arrangement or a part of it, is arranged in a region A in the inlet which in turn is arranged outside of the direct passage of the first medium in and through the inlet such that the ignition of the fuel, the combustion of the fuel and the transfer of combustion heat to the first medium take place in this region A, followed by onwards transport of the heated first medium from the region A into the compartment through the inlet The invention concerns also an arrangement and a pelletising plant 1. A method for the heating of a medium in a compartment in which iron ore pellets are arranged to be oxidised and sintered with the aid of the hot medium , the method comprising:introducing a first medium into the compartment through an inlet connected to the compartment:heating the first medium in the inlet through the use of a combustion arrangement or a part thereof arranged in the inlet, wherein the combustion arrangement or a part thereof comprises fuel, where the use of the combustion arrangement or a part thereof comprises the ignition of the fuel, combustion of the fuel, whereby combustion heat is developed, and transfer of the combustion heat to the first medium that is present at the combustion ...

Подробнее
Номер записи: 12
17-10-2013 дата публикации

METHOD OF PRODUCING ORE SLURRY

Номер: US20130269485A1
Автор: Mitsui Hiroyuki, Nakai Osamu
Принадлежит: SUMITOMO METAL MINING CO., LTD.

A method of producing an ore slurry includes pulverizing and classifying steps as well as an ore slurry condensing step, wherein the slurry condensing step uses as a flocculant solution a diluted solution of the flocculant that satisfies the conditions of: (A) a flocculant molecular weight of 8×10to 20×10and (B) a flocculant dilution ratio of 0.1 to 0.5 g/L, and with respect to the added amount of the flocculant, a flocculant solution having an amount corresponding to 50 to 150 g of the flocculant amount per ton of dried solid components of the ore slurry is added to the ore slurry so as to be made in contact therewith for a sufficient period of time, with the temperature of the slurry being set in a range from 35 to 45° C. upon transporting the slurry from the condensing step to the next process. 1. A method of producing an ore slurry that is used for recovering nickel and cobalt from nickel oxide ores by using a high temperature and pressure acid leach method utilizing sulfuric acid , the method comprising:pulverizing and classifying steps as well as an ore slurry condensing step,wherein the slurry condensing step uses as a flocculant solution a diluted solution of the flocculant that satisfies the following conditions of:{'sup': 6', '6, '(A) a flocculant molecular weight of 8×10to 20×10and'}(B) a coagulant flocculant dilution ratio of 0.1 to 0.5 g/L, and wherein with respect to the added amount of the flocculant, a flocculant solution having an amount corresponding to 50 to 150 g of the flocculant amount per ton of dried solid components in the ore slurry is added to the ore slurry so as to be made in contact therewith for a sufficient period of time, with the temperature of the slurry being set in a range from 35 to 45° C. upon transporting the slurry from the condensing step to the next process.2. A method of producing an ore slurry that is used for recovering nickel and cobalt from nickel oxide ores by using a high temperature and pressure acid leach method ...

Подробнее
Номер записи: 13
31-10-2013 дата публикации

METHOD OF SEPARATING AND RECOVERING METAL ELEMENTS

Номер: US20130283975A1
Автор: Iida Kozo, Kiyosawa Masashi, Kobayashi Norihisa, Mochizuki Yuuki, NOCHI Katsumi, Sugawara Katsuyasu
Принадлежит:

A separation and recovery method that enables titanium and tungsten to be separated and recovered from a used DeNOx catalyst in high yield. Specifically, a method of separating and recovering metal elements that includes a first heating step of heating a DeNOx catalyst containing titanium, tungsten, vanadium and iron in a chlorine atmosphere, thereby removing the vanadium and the iron from the DeNOx catalyst, and a second heating step, performed after the first heating step, of heating the DeNOx catalyst in a chlorine atmosphere while the catalyst is exposed to a gas of a hydrocarbon compound (excluding CH) or an oxygen-containing carbon compound, thereby volatilizing the tungsten and the titanium from the DeNOx catalyst, and recovering the tungsten and the titanium from the DeNOx catalyst. 1. A method of separating and recovering metal elements , the method comprising:a first heating step of heating a DeNOx catalyst containing titanium, tungsten, vanadium and iron in a chlorine atmosphere, thereby removing the vanadium and the iron from the DeNOx catalyst, and{'sub': '4', 'a second heating step, performed after the first heating step, of heating the DeNOx catalyst in a chlorine atmosphere while the catalyst is exposed to a gas of a hydrocarbon compound (excluding CH) or an oxygen-containing carbon compound, thereby volatilizing the tungsten and the titanium from the DeNOx catalyst, and recovering the tungsten and the titanium from the DeNOx catalyst.'}2. The method of separating and recovering metal elements according to claim 1 , wherein the first heating step is performed at a first heating temperature claim 1 , the second heating step is performed at a second heating temperature claim 1 , and the second heating temperature is lower than the first heating temperature.3. The method of separating and recovering metal elements according to claim 1 , wherein mainly tungsten is volatilized and recovered from the DeNOx catalyst in the second heating step.4. The method ...

Подробнее
Номер записи: 14
31-10-2013 дата публикации

REFRACTORY LINING FOR TITANIUM ORE BENEFICIATION

Номер: US20130287942A1
Автор: Barnes John James, Hill Peter, Nguyen Dat, Schickling Jay Scott
Принадлежит:

The disclosure relates to a refractory which is resistant to corrosion which degrades the refractory during titanium-ore beneficiation in a furnace, particularly a rotary hearth furnace. In particular, the disclosure relates to a layered refractory lining for a furnace, for use in a titanium ore beneficiation process wherein a titanium oxide-rich molten slag is formed, comprising: 113-. (canceled)14. A process for forming a resistant agent in a refractory body of a furnace for use in a titanium ore beneficiation process , comprising:(i) forming agglomerates comprising carbon-based materials and a titanium-bearing ore, the quantity of carbon of the agglomerates being sufficient for, at an elevated temperature, reducing ferric oxide to ferrous oxide and forming a slag that is comprised of titanium oxide and iron oxide;(ii) introducing the agglomerates onto a carbon bed of a moving hearth furnace, wherein the moving hearth furnace comprises a refractory lining comprising a first layer comprising alumina and zirconia having about 90 to about 99 wt. % alumina, and about 1 to about 10 wt. % zirconia, based on the entire weight of the first layer;(iii) heating the agglomerates in the moving hearth furnace to a temperature sufficient for reducing and melting the agglomerates to produce a titanium oxide-rich molten slag, which contacts the refractory lining to produce a second layer comprising a resistant agent which is a reaction product of the slag, the alumina and the zirconia; wherein the second layer is formed between the slag and the first layer; andwherein the total amount of calcium oxide, magnesium oxide, yttrium oxide and cerium oxide is less than 1 wt. %, based on the total weight of the refractory body.15. A resistant agent for a titanium oxide-rich molten slag comprising a reaction product of a first layer of a refractory lining comprising alumina and zirconia having about 90 to about 99 wt. % alumina , and about 1 to about 10 wt. % zirconia , based on the ...

Подробнее
Номер записи: 15
07-11-2013 дата публикации

PROCESS AND PLANT FOR TREATING ORE CONCENTRATE PARTICLES CONTAINING VALUABLE METAL

Номер: US20130291684A1
Автор: BERG Gunnar, GÜNTNER Jochen, Holmström Åke, Lundholm Karin
Принадлежит: OUTOTEC OYJ

The present invention concerns a process and a plant for treating ore concentrate particles containing valuable metal and having at least arsenic and sulfur containing components. The process comprises a two-stage roasting process comprising a first roasting step () made in a first roasting reactor () and a second roasting step () made in a second roasting reactor (). A gas mixture is formed from the first process gas component () obtained from the first roasting step()and from the second process gas component () obtained from the second roasting step (). Post combustion of the gas mixture is made in a post combustion chamber (). The post combustion operates with said reducing and sulphide rich first process gas component () and the second process gas component () as oxidizer gas in order to decompose SOin the gas mixture to reduce the SOcontent. The risk of accretion formation and corrosion in the post combustion chamber and in subsequent steps is reduced. Finally the exit gas () is exposed to sub sequent gas cooling and dust removal steps ( to ).

Подробнее
Номер записи: 16
19-12-2013 дата публикации

Method of Recovering Valuable Metals from Waste

Номер: US20130333522A1
Автор: Tetsuyuki Koizumi
Принадлежит: Individual

A method of recovering valuable metals from a waste including: heating the waste at a temperature and for a period of time such that a glass fiber does not melt but degrades to the extent that it becomes pulverizable, wherein conditions of the temperature and period of time are selected from a group consisting of a range of more than or equal to 750° C. and less than 800° C. for 30-40 minutes, a range of more than or equal to 800° C. and less than 900° C. for 10-40 minutes, a range of more than or equal to 900° C. and less than 950° C. for 10-30 minutes, a range of more than or equal to 950° C. and less than 1000° C. for 10-20 minutes, and a range of 1000° C. for about 10 minutes; removing the degraded glass fiber; and recovering valuable metals contained in the waste.

Подробнее
Номер записи: 17
19-12-2013 дата публикации

Sustainable process for reclaiming precious metals and base metals from e-waste

Номер: US20130336857A1
Автор: Dinakar Gnanamgari, Fred Strickler, James Norman, John Warner, Laura Ingalls, Michael B. Korzenski, Ping Jiang, Ted Mendum
Принадлежит: Advanced Technology Materials Inc

Processes for recycling electronic components removed from printed wire boards, whereby precious metals and base metals are extracted from the electronic components using environmentally friendly compositions. At least gold, silver and copper ions can be extracted from the electronic components and reduced to their respective metals using the processes and compositions described herein.

Подробнее
Номер записи: 18
26-12-2013 дата публикации

DISSOLUTION AND RECOVERY OF AT LEAST ONE ELEMENT NB OR TA AND OF AT LEAST ONE OTHER ELEMENT U OR RARE EARTH ELEMENTS FROM ORES AND CONCENTRATES

Номер: US20130340571A1
Автор: Agin Jerome, Durupt Nicolas, Greco Antoine, Hammy Fatima, LAROCHE GUILLAUME, Thiry Jacques
Принадлежит:

The main subject-matter of the present invention is a process for the dissolution of at least one element chosen from niobium and tantalum and at least one other element chosen from uranium and the rare earth elements, advantageously for the dissolution of niobium, tantalum, uranium and rare earth elements, present in an ore or an ore concentrate. Said process comprises: 1. A process for the dissolution of at least one element chosen from niobium and tantalum and of at least one other element chosen from uranium and rare earth elements , advantageously for the dissolution of niobium , tantalum , uranium and rare earth elements , present in an ore or an ore concentrate , which comprises:the roasting of a material, comprising said elements, which material is mixed, dry or in the presence of water, with an acidic roasting agent in order to obtain a calcine; said material consisting of said ore or concentrate or having been obtained from said ore or said concentrate and said acidic roasting agent providing for roasting in a sulphate medium; andthe dissolution in an aqueous solution of the calcine obtained in order to obtain a slurry, the liquid fraction of which includes iron, in the ferric state, at a concentration of at least 50 g/l, advantageously of at least 70 g/l and very advantageously of at least 120 g/l.2. The process according to claim 1 , wherein the iron present in said slurry was present in said calcine and/or was added claim 1 , at least in part claim 1 , in the liquid and/or solid form claim 1 , to said calcine.3. The process according to claim 1 , wherein the dissolution of the calcine is carried out without any addition of sulphuric acid.4. The process according to claim 1 , wherein the dissolution of the calcine is carried out with addition of a reducing agent claim 1 , such as SO.5. The process according to claim 1 , wherein the roasting claim 1 , a solid/liquid reaction claim 1 , is an acid roasting.6. The process according to claim 1 , wherein the ...

Подробнее
Номер записи: 19
06-02-2014 дата публикации

Ore beneficiation

Номер: US20140033867A1
Автор: Gregory D. Lindahl, Howard W. Hilshorst, James A. Hecimovich
Принадлежит: Superior Mineral Resources LLC

A method of enriching the iron content of low grade iron ore bearing materials has been developed which produces a high iron ore concentrate suitable for processing into pig iron and steel. The process includes reducing the low grade iron ore bearing materials to a fine particulate form and treating a water slurry of this material by applying a combination of ultrasonic treatments in a plurality of high and low intensity magnetic separation operations to remove interfering materials and concentrate magnetic and paramagnetic iron bearing materials into a high grade ore stock.

Подробнее
Номер записи: 20
06-02-2014 дата публикации

Method for detaching coatings from scrap

Номер: US20140034090A1
Автор: Hans-Bernd Pillkahn, Holger Ververs, Thomas Kamper
Принадлежит: PROASSORT GMBH

The invention relates to a method for the removal of coatings from scrap materials ( 3 ), wherein the scrap ( 3 ) is brought into contact with a liquid and, while the coating removal process is performed, moves within a conveying trough ( 2 ) of a vibrating conveyor ( 1 ) in a direction ( 6 ) from the inlet end ( 7 ) towards the outlet end ( 8 ) of said conveying trough ( 2 ). The invention is of special importance for the dezincing of steel scrap. The method operates on a continuous basis with the removal of coatings being efficiently accomplished.

Подробнее
Номер записи: 21
06-03-2014 дата публикации

METHOD FOR RECOVERING VALUABLE METALS

Номер: US20140060250A1
Автор: Mori Kazuhiro, Takahashi Jun-ichi
Принадлежит: SUMITOMO METAL MINING CO LTD

Provided is a method in which, when discarded batteries such as lithium-ion batteries are treated by a dry process, slag having a reduced viscosity is obtained to heighten the recovery of valuable metals. The method for recovering valuable metals includes a dry process (S) which includes a melting step (ST), a slag separation step (ST), and an alloy separation step (ST), the slag having an aluminum oxide content of 5 mass % or higher but less than 20 mass % and an iron content in terms of metallic iron amount of 20-40 mass %. Furthermore, silicon oxide and calcium oxide are added as a flux in the melting step (ST) so that the slag has a melting point of 1,400° C. or lower, and the melting step (ST) is conducted at 1,400° C. or lower. Thus the recovery of the alloys can be heightened. 15-. (canceled)6. A method for recovering valuable metals from waste batteries , the method comprising:a roasting step for roasting the waste batteries at a temperature of higher than or equal to 300° C. and lower than 600° C.;an oxidation step for carrying out an oxidation treatment by roasting the waste batteries roasted in the roasting step at a temperature of from 1100° C. to 1200° C.; anddry step for melting the waste batteries after the oxidation step, and separately collecting slag and an alloy of valuable metals.7. The method for recovering valuable metals according to claim 6 , wherein the melting step in the dry step further comprises an additional oxidation step for carrying out an additional oxidation treatment.8. The method for recovering valuable metals according to or claim 6 , wherein the roasting step and the oxidation step are carried out in a single heating furnace by sequentially changing the temperature inside the single heating furnace.9. The method for recovering valuable metals according to or claim 6 , wherein the roasting step and the oxidation step are carried out in a single heating furnace by dividing the interior of the single heating furnace into plural ...

Подробнее
Номер записи: 22
01-01-2015 дата публикации

METHOD OF SEPARATING AND RECOVERING IRON FROM WASTE NON-FERROUS SLAG DISCHARGED FROM PROCESS FOR SMELTING OF NON-FERROUS METALS, INCLUDING COPPER, ZINC AND LEAD BY PHYSICAL AND CHEMICAL SEPARATION TECHNIQUE

Номер: US20150000467A1
Автор: JEONG Soo Bok, Kim Byung-Su, Lee Jae Chun, SHIN Doyun
Принадлежит:

The present invention provides a method of separating and recovering iron from a waste non-ferrous slag, generated in a process for smelting of non-ferrous metals, including copper, zinc and lead, in which a reducing agent and a reaction catalyst are added to the crushed waste non-ferrous slag, and the mixture is subjected to a reduction reaction, thereby converting amorphous iron oxides, bound to alumina, calcium oxide, magnesium oxide, silica, and the like in the waste non-ferrous slag, to crystalline iron (Fe) and iron carbide (FeC); the resulting material is crushed to separate iron and iron carbide obtained by the reduction reaction from components such as alumina, calcium oxide, magnesium oxide, silica, and the like; the crushed material is separated into fractions by particle size; and the fractions are subjected to wet magnetic separation and dry magnetic separation to separate and recover magnetic iron concentrates from the fractions. 1. A method of separating and recovering iron from a waste non-ferrous slag , discharged from a process for smelting of non-ferrous metals , including copper , zinc and lead , by physical and chemical separation , the method comprising the steps of:(a) crushing the waste non-ferrous slag;{'sub': 3', '2', '3', '2', '2, '(b) mixing the waste non-ferrous slag, crushed in step (a), with carbon as a reducing agent and calcium carbonate (CaCO) as a reaction catalyst, and subjecting the mixture to a reduction reaction, thereby converting amorphous iron oxides, bound to alumina (AlO), calcium oxide (CaO), magnesium oxide (MgO), silica (SiO), zinc oxide (ZnO), copper oxide (CuO) and lead oxide (PbO) in the waste non-ferrous slag, to crystalline iron (Fe) and iron carbide (FeC);'}{'sub': 2', '2', '3', '2, '(c) crushing the material resulting from step (b) to separate iron (Fe) and iron carbide (FeC) obtained in step (b) from components such as alumina (AlO), calcium oxide (CaO), magnesium oxide (MgO), silica (SiO), zinc oxide (ZnO), ...

Подробнее
Номер записи: 23
20-01-2022 дата публикации

METHOD OF PRODUCING LITHIUM HYDROXIDE FROM LITHIUM CONCENTRATE THROUGH SODIUM SULFATE ADDITION AND ROASTING

Номер: US20220017991A1
Автор: KIM Da-Mo-A, LEE Kwang Seok, LEE Min-Woo, Lee Myung Gyu, PARK Jong Sun, PARK Suk-Joon
Принадлежит: ECOPRO INNOVATION CO., LTD.

The present invention relates to a method of producing lithium hydroxide from a lithium concentrate through sodium sulfate addition and roasting. The method effectively recover lithium ions from the lithium concentrate, minimizes production of byproducts, and produces high-purity lithium hydroxide. By mixing a concentrate containing lithium with sodium sulfate (NaSO), roasting the concentrate, and leaching the roasted concentrate with water, it is possible to recover lithium ions at a high recovery rate and to produce high-purity lithium hydroxide monohydrate. 1. A method of producing lithium hydroxide from a lithium concentrate through sodium sulfate addition and roasting , the method comprising:preparing a lithium-containing concentrate;mixing sodium sulfate to the lithium-containing concentrate and roasting the lithium-containing concentrate mixed with the sodium sulfate;leaching the roasted lithium-containing concentrate with water under stirring;performing solid-liquid separation to separate the resultant of the leaching into a leachate in which lithium is dissolved and residues;concentrating the leachate in which lithium is dissolved to produce a concentrated solution;mixing sodium hydroxide (NaOH) with the concentrated solution under stirring;performing cooling crystallization to precipitate sodium sulfate using a change in solubility by cooling the sodium hydroxide mixture;recovering a lithium hydroxide solution by separating the resultant of the cooling crystallization into a precipitate and the lithium hydroxide solution;performing concentration crystallization to recover lithium hydroxide monohydrate crystals by concentrating the sodium hydroxide solution;washing and drying the lithium hydroxide monohydrate crystals to recover lithium hydroxide monohydrate.2. The method according to claim 1 , wherein the lithium-containing concentrate includes one or more ones selected from the group consisting of spodumene (LiOAlO4SiO) claim 1 , lepidolite (KLiAl(OH ...

Подробнее
Номер записи: 24
27-01-2022 дата публикации

REACTOR SYSTEM FOR SEPARATION AND ENRICHMENT OF MINERALS FROM A SLURRY CONTAINING MINERALS AND OTHER MATERIALS

Номер: US20220023876A1
Автор: Amelunxen Peter A., BAILEY Timothy J., BALASUBRAMANYAM Sandeep, Dolan Paul, FERNALD MARK R., Johnson Kirk, JORDENS Adam, Nord Joseph, Rothman Paul J., TUXBURY PATRICK
Принадлежит:

A reactor system has a number of stations arranged to recover mineral particles in a slurry. The system includes a hopper to receive the slurry and barren media having hydrophobic coating to attract the mineral particles. The hopper provides a mixture of barren media and slurry to a tumbler arranged to stir the mixture in order to increase the contact between the slurry and the barren media so as to allow the mineral particles to attach to the barren media to form mineral laden media. The mineral laden media are conveyed to a rinsing station where water jets are used to wash the gangue materials off the mineral laden media. The rinsed mineral laden media are mixed with a surfactant so that the mineral particles are released from the mineral laden media. High-pressure water and air jets are then used to remove remaining surfactant from the released media. 1. An apparatus comprising:a tumbler comprising a rotating cylinder configured to stir a first mixture comprising engineered collection media and a slurry, the slurry containing mineral particles and unwanted materials, the tumbler having an output arranged to provide a second mixture comprising a reacted slurry and mineral laden media; anda rinsing station comprising a screen separator arranged to receive the second mixture, the rinsing station further comprising one or more spraying nozzles arranged to spray a cleaning liquid onto the second mixture so as to separate the reacted slurry from the mineral laden media, wherein the reacted slurry comprises unwanted materials, wherein the screen separator is arranged to rotate together with the tumbler.2. The apparatus according to claim 1 , wherein the rotating cylinder has an interior surface and a plurality of ribs disposed on the interior surface claim 1 , the ribs arranged to assist stirring of the first mixture.3. The apparatus according to claim 1 , further comprisinga hopper arranged to receive the slurry and the engineered collection media and to provide the ...

Подробнее
Номер записи: 25
12-01-2017 дата публикации

Recovery of Copper from Arsenic-Containing Process Feed

Номер: US20170009318A1
Автор: Kelvin Richard BUBAN, Michael Joseph Collins, Preston Carl Holloway
Принадлежит: Sherritt International Corp

Process to recover copper from a process feed including one or more feed components containing a base metal sulphidic feed, iron, copper and arsenic. Process feed and aqueous quench solution are introduced to a pressure oxidative leaching step with a partial pressure of oxygen above 200 kPa to form free sulphuric acid, to solubilize copper and other metal in the feed as aqueous sulphate compounds and to precipitate arsenic as solid iron arsenic compounds. A treated slurry comprising a liquid phase containing sulphuric acid and copper sulphate, and solids containing the iron arsenic compounds is withdrawn and the liquid phase is separated from the solids. To lessen arsenic re-dissolution and to maintain stability of the solid iron arsenic compounds, one or more of temperature, free acid level and residence time of the treated slurry is controlled. Copper metal is recovered from the separated liquid phase.

Подробнее
Номер записи: 26
12-01-2017 дата публикации

METHOD FOR PURIFICATION OF 225AC FROM IRRADIATED 226RA-TARGETS

Номер: US20170009320A1
Автор: HENKELMANN Richard, HUENGES Ernst, KABAI Eva, MORENO BERMUDEZ Josue Manuel, TURLER Andreas
Принадлежит: ACTINIUM PHARMACEUTICALS INC.

The present invention describes a method for purification of Ac from irradiated Ra-targets provided on a support, comprising a leaching treatment of the Ra-targets for leaching essentially the entirety of Ac and Ra with nitric or hydrochloric acid, followed by a first extraction chromatography separating Ac from Ra and other Ra-isotopes and a second extraction chromatography for separating Ac from Po and Pb. The finally purified Ac can be used to prepare compositions useful for pharmaceutical purposes. 150-. (canceled)52. (canceled)53. (canceled)54. The method of claim 51 , wherein the support is a metal claim 51 , and is selected from the group consisting of Aluminum or Aluminum alloys claim 51 , passivated Aluminum claim 51 , anodized Aluminum claim 51 , coated Aluminum claim 51 , Aluminum coated with an element of a Platinum group claim 51 , precious metals claim 51 , elements from a Platinum group; and mixtures thereof.55. (canceled)56. (canceled)57. (canceled)58. The method of claim 51 , wherein the first extractant system is octyl(phenyl)-N claim 51 ,N-diisobutylcarbamoylphosphine oxide [CMPO] in tributyl phosphate [TBP].60. The method of claim 51 , wherein the second extractant system is 4 claim 51 ,4′-bis(t-butylcyclohexano)-18-crown-6 in 1-octanol.61. The method of claim 51 , wherein the second extractant system is 4 claim 51 ,5′-bis(t-butylcyclohexano)-18-crown-6 in 1-octanol.62. The method of claim 51 , wherein the first extraction chromatography of step c) is repeated one or more times.63. The method of claim 51 , wherein the second extraction chromatography of step e) is repeated one or more times.64. The method of claim 51 , further comprising removing Rn from the support or the Ac and Ra containing extract during step a).65. The method of claim 64 , wherein the Rn is removed by means of a first alkaline trap to neutralize acidic vapours claim 64 , a subsequent silica trap to absorb water claim 64 , and a final activated coal trap.66. The method of ...

Подробнее
Номер записи: 27
12-01-2017 дата публикации

METHOD FOR SIMULTANEOUSLY RECOVERING COBALT AND MANGANESE FROM LITHIUM BASED BATTERY

Номер: US20170009358A1
Автор: JU Sung-Ho, SHIN Dong-Ju, SHIN Shun-Myung, WANG Jei-Pil
Принадлежит:

The present invention relates to a method of simultaneously recovering cobalt (Co) and manganese (Mn) from lithium-based BATTERY, and more particularly, to a method that is capable of simultaneously recovering cobalt and manganese from lithium-based BATTERY, i.e., recycled resources that contain large amounts of cobalt and manganese, with high purities using multistage leaching and electrowinning methods. According to the method of the present invention, cobalt and manganese can be simultaneously recovered from lithium-based BATTERY as recycled resources, and a recovery method that is cost-effective compared to conventional methods can be provided. 1. A method of simultaneously recovering cobalt and manganese from lithium-based BATTERY , the method comprising:(1) heat-treating the lithium-based BATTERY;(2) grinding the heat-treated BATTERY to obtain ground particles, and separating particles having a particle size of 12 mesh or less from the ground particles;(3) subjecting the separated particles to multistage leaching;(4) adding 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester (PC88A) to a product of the multistage leaching to obtain an electrowinning solution;(5) subjecting the electrowinning solution to electrowinning using circulation-type electrodes, the electrodes including a cathode made of stainless steel and an anode made of a 93% Pb-7% Sn alloy; and(6) washing.2. The method of claim 1 , wherein the lithium-based BATTERY are a mixture of lithium-ion BATTERY and lithium primary BATTERY.3. The method of claim 1 , wherein the electrowinning is performed in an electrolytic cell at a pH of 2 or more.4. The method of claim 1 , wherein the electrowinning is performed in an electrolytic cell at a current density of 0.025-0.065 A/cm.5. The method of claim 1 , wherein the electrowinning is performed in an electrolytic cell at a temperature of 30-60° C.6. The method of claim 1 , wherein a concentration of cobalt ions in the electrowinning is 15-20 g/L or higher.7. ...

Подробнее
Номер записи: 28
17-04-2014 дата публикации

Method for recovering valuable metals

Номер: US20140102256A1
Автор: Jun-ichi Takahashi, Kazuhiro Mori, Toshirou TAN
Принадлежит: SUMITOMO METAL MINING CO LTD

A method for recovering valuable metals is provided in which the degree of oxidation of molten waste batteries is stabilized and separation between slag and an alloy is ensured. The method includes a roasting step (ST 10 ) in which waste batteries are roasted beforehand at a low temperature of 300° C. or higher but lower than 600° C., an oxidation step (ST 20 ) in which the waste batteries are oxidized by roasting at 1,100-1,200° C., and dry step (S 20 ) in which the waste batteries that were oxidized in the oxidation step are melted, and slag and an alloy of valuable metals are separated from each other and recovered. By conducting the roasting step (ST 10 ), organic carbon, which impairs the stability of the oxidation step (ST 20 ) and which is contained, in plastic components, etc., is removed in advance prior to the oxidation step (ST 20 ), and the efficiency of slag/alloy separation can be improved.

Подробнее
Номер записи: 29
17-01-2019 дата публикации

PROCESS AND FACILITY FOR THERMAL TREATMENT OF A SULFUR-CONTAINING ORE

Номер: US20190017143A1
Автор: BRÄUNER Stefan, CHARITOS Alexandros, Daum Karl-Heinz, GÜNTNER Jochen, HAMMERSCHMIDT JÖRG, Storch Hannes
Принадлежит:

A process for thermal treatment of a sulfur-containing ore in which the ore is calcined at temperatures of between 600 and 1200° C. in the presence of oxygen in a reactor so that between 1 and 90% by weight of sulfur contained in the ore is burned to sulfur dioxide and impurities contained are driven off in gaseous form. The exhaust gas being produced and containing the sulfur dioxide is fed into a gas purification comprising at least one component and/or the calcined ore is fed into at least one further process stage. An exhaust gas from the gas purification and/or the process stage and/or a gas used for cooling within the gas purification or for cooling within a further process stage is at least partially returned back into the reactor as recycling gas having a temperature of >100° C. 117.-. (canceled)18. A method for thermal treatment of a sulfur-containing ore comprising:calcining the ore at temperatures of between 600 and 1200° C. in the presence of oxygen in a reactor so that between 1 and 90% by weight of the sulfur contained in the ore is burned to sulfur dioxide and impurities contained are driven off in gaseous form;feeding exhaust gas produced containing the sulfur dioxide into a gas purification comprising at least one component wherein an exhaust gas from the gas purification is at least partially returned back into the reactor as recycling gas having a temperature of >100° C.; andoperating the reactor in an autothermic manner.19. The method according to claim 18 , wherein the calcined ore is fed into at least one further process stage claim 18 , and that an exhaust gas from the process stage and/or a gas used for cooling within the further process stage is at least partially returned back into the reactor as recycling gas having a temperature of >100° C.20. The method according to claim 18 , wherein the driven off impurities including arsenic and/or antimony are contained in amounts of between 1 and 10% by weight claim 18 , based on their content in ...

Подробнее
Номер записи: 30
17-01-2019 дата публикации

METHOD FOR SEPARATING METAL COMPONENTS

Номер: US20190017144A1
Автор: Awazu Tomoyuki, Majima Masatoshi, OISHI Tetsuo, TSUBOKURA Mitsutaka
Принадлежит:

A method for separating metal components from a treatment material containing a silicate and metal elements includes: a reaction step of reacting the treatment material and a molten alkali hydroxide in which bubbles due to water vapor derived from water are generated by heating a hydroxide of an alkali metal or an alkaline-earth metal and the water in a state where the hydroxide and the water coexist, to obtain a reaction product; and a first precipitation step of dissolving the reaction product of the treatment material and the molten alkali hydroxide after the reaction step in water, thereby generating a precipitate containing the metal elements. 1. A method for separating metal components derived from metal elements , from a treatment material containing a silicate and the metal elements , the method comprising:a reaction step of reacting the treatment material and a molten alkali hydroxide in which bubbles due to water vapor derived from water are generated by heating a hydroxide of an alkali metal or an alkaline-earth metal and the water in a state where the hydroxide and the water coexist, to obtain a reaction product; anda first precipitation step of dissolving the reaction product of the treatment material and the molten alkali hydroxide after the reaction step in water to generate a precipitate containing the metal elements in an obtained solution.2. The method for separating the metal components according to claim 1 , wherein the hydroxide and the water are heated at a heating rate of 7° C./min or higher in the reaction step.3. The method for separating the metal components according to claim 1 , wherein the hydroxide and the water are heated at a heating rate of 15° C./min or higher in the reaction step.4. The method for separating the metal components according to claim 1 , wherein the hydroxide and the water are heated at a heating rate of 100° C./min or higher in the reaction step.5. The method for separating the metal components according to claim 1 , ...

Подробнее
Номер записи: 31
21-01-2021 дата публикации

PROCESS FOR OBTAINING VANADIUM OXIDE FROM A GASIFIER SLAG FIELD

Номер: US20210017038A1
Автор: CHINTHALA Praveen Kumar, Daggupati Sateesh, DAS Asit Kumar, Ghosh Swapan Kumar, Joshi Mehul Bharatbhai, Majhi Sachchit, Mandal Sukumar, Panchotia Vipulkumar Rameshbhai, RAVICHANDRAN Gopal, Sapre Ajit Vishwanath
Принадлежит: RELIANCE INDUSTRIES LIMITED

A process for obtaining vanadium component in the form of vanadium oxide from gasifier slag is disclosed. The process comprises pulverizing the slag to obtain pulverized slag, which is blended with water and an alkali salt to obtain a slurry. The slurry is dried and then roasted in the presence of air to obtain a roasted slag. The roasted slag is leached to obtain a first filtrate comprising the vanadium component. The first filtrate is reacted with a magnesium salt to remove a silica component in the form of a precipitate. The silica free second filtrate is reacted with an ammonium salt to obtain ammonium metavanadate, which is further calcined to obtain the significant amount of vanadium pentoxide (VO). 1. A process for obtaining vanadium oxide from gasifier slag having vanadium component;the process comprising the following steps:a) pulverizing the gasifier slag to a particle size less than 100 μm to obtain a pulverized slag;b) blending the pulverized slag with water and at least one alkali salt to obtain a slurry;c) drying the slurry to remove water therefrom;d) roasting the dried slurry in the presence of air and at a temperature in the range of 750° C. to 1000° C. to obtain a roasted slag;e) leaching the roasted slag with water to obtain a first filtrate comprising the vanadium component;f) separating a silica component from the first filtrate to obtain a second filtrate;g) reacting the second filtrate with an ammonium salt to obtain ammonium metavanadate in the form of a precipitate; andh) separating the precipitate and calcining at a temperature in the range of 400 to 600° C. to obtain vanadium oxide having purity greater than 95%.2. The process as claimed in claim 1 , wherein in the step (b) the alkali salt is at least one selected from the group consisting of sodium carbonate (NaCO) and sodium sulphate (NaSO) and the amount of the alkali salt is in the range of 20 wt % to 50 wt % of the total slag.3. The process as claimed in claim 1 , wherein in the step ...

Подробнее
Номер записи: 32
17-01-2019 дата публикации

Systems and Methods for Preheating Metal-Containing Pellets

Номер: US20190017745A1
Автор: Buragino Gregory J., Gangoli Shailesh Pradeep, He Xiaoyi, Sane Anup Vasant, Zelson Larry Saul
Принадлежит: AIR PRODUCTS AND CHEMICALS, INC.

A direct flame impingement system for preheating metal pellets before charging into a melting furnace, wherein the pellets are transported by a conveyor belt to a chute discharging into the melting furnace, including a refractory-lined preheater hood including a chute hood covering the chute and a conveyor hood covering at least a portion of the conveyor belt, the preheater hood having an entrance end through which pellets enter and an exit end through which pellets exit toward the melting furnace, and at least one bank of burners each containing at least one burner disposed in the hood positioned to direct flames into contact with the pellets being transported to preheat the pellets prior to discharge into the melting furnace. 1. A direct flame impingement system for preheating metal pellets before charging into a melting furnace , wherein the pellets are transported by a conveyor belt to a chute discharging into the melting furnace , comprising:a refractory-lined preheater hood including a chute hood covering the chute and a conveyor hood covering at least a portion of the conveyor belt, the preheater hood having an entrance end through which pellets enter and an exit end through which pellets exit toward the melting furnace; andat least one bank of burners each containing at least one burner disposed in the hood positioned to direct flames into contact with the pellets being transported to preheat the pellets prior to discharge into the melting furnace.2. The direct flame impingement system of claim 1 , wherein the at least one bank of burners includes a chute bank of burners disposed in the chute hood containing at least one burner positioned to direct flames into contact with the pellets being transported through the chute.3. The direct flame impingement system of or claim 1 , wherein the at least one bank of burners includes a first conveyor bank of burners disposed in the conveyor hood containing at least one burner positioned to direct flames into contact ...

Подробнее
Номер записи: 33
28-01-2016 дата публикации

Use of Cationic Surfactants In the Cyanidation of Refractory Carbonaceous Ores for Recovery of Metals

Номер: US20160024613A1
Автор: Choi Yeonuk, Jiang Junhua, Zhou Qiong
Принадлежит: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.

A process for recovery of precious metals from ores or concentrates containing refractory carbonaceous material by cyanidation leaching. The process involves addition to the ores or concentrates at least one cationic surfactant before or during the addition of cyanide-containing solution. The agent enables the recovery of precious metals by cyanidation from high preg-robbing carbonaceous ores and improves the recovery of precious metals by cyanidation from medium to low preg-robbing carbonaceous ores. The agent also prevents froth and foaming formation during the cyanidation process. 2. The method of claim 1 , further comprising the step of adding a cyanide-containing solution to the ore or concentrate.3. The method of claim 1 , further comprising the step of roasting the ore or concentrate prior to the treating step.4. The method of claim 1 , wherein the ore or concentrate is in the form of an aqueous ore slurry with particle size 80% passing 30 mesh or finer and a pulp density of 5% to 80%.5. The method of claim 1 , further comprising the step of oxidizing the ore or concentrate prior to the treating step.6. The method of claim 1 , wherein the alkyl amine is animal based or vegetable based fatty alkyl amine.7. The method of claim 1 , wherein the alkyl amine is alkoxylated.8. The method of claim 1 , wherein the cationic surfactant is selected from the group consisting of a salt of the alkyl amine claim 1 , an alkyl amine derivative claim 1 , and combinations thereof.9. The method of claim 1 , wherein the cationic surfactant is an alkyl quaternary ammonium salt.10. The method of claim 1 , wherein the cationic surfactant is an alkyl amine oxide.11. The method of claim 1 , wherein the cationic surfactant is selected from the group consisting of an alkyl amide claim 1 , amidoamine claim 1 , imidazoline claim 1 , and combinations thereof.12. The method of claim 1 , wherein the ore or concentrate is treated with the cationic surfactant and at least one other surfactant ...

Подробнее
Номер записи: 34
26-01-2017 дата публикации

METHODS FOR TREATING LITHIUM-CONTAINING MATERIALS

Номер: US20170022617A1
Автор: BOUCHARD Pierre, BOURASSA Guy, CLAYTON Geneviève, Genders J. David, GLADKOVAS Mykolas, LAROCHE Nicolas, MACKIE Stephen Charles, Magnan Jean-Francois, PEARSE Gary, SYMONS Peter
Принадлежит:

The present disclosure relates to a method for extracting lithium from a lithium-containing material. For example, the method can comprise leaching a roasted lithium-containing material under conditions suitable to obtain an aqueous composition comprising a lithium compound such as lithium sulfate and/or lithium bisulfate. The aqueous composition comprising lithium sulfate and/or lithium bisulfate can optionally be used, for example, in a method for preparing lithium hydroxide comprising an electromembrane process. The roasted lithium-containing material can be prepared, for example by a method which uses an aqueous composition comprising optionally lithium sulfate and/or lithium bisulfate which can be obtained from a method for preparing lithium hydroxide comprising an electromembrane process such as a two-compartment monopolar or bipolar electrolysis process. 1. A method for preparing lithium hydroxide , said method comprising:mixing a lithium-containing material with an acidic aqueous composition optionally comprising lithium sulfate and thereby obtaining a mixture;roasting said mixture under suitable conditions to obtain a roasted, lithium-containing material;leaching said roasted material under conditions suitable to obtain a first aqueous composition comprising lithium sulfate;submitting said first aqueous composition comprising lithium sulfate to an electromembrane process under suitable conditions for at least partial conversion of said lithium sulfate into lithium hydroxide and to obtain a second aqueous composition comprising lithium sulfate; andoptionally increasing concentration of acid in said second aqueous composition; andusing said second aqueous composition comprising lithium sulfate as said acidic aqueous composition optionally comprising lithium sulfate for mixing with said lithium-containing material and to obtain said mixture.2. (canceled)3. The method of claim 1 , wherein said acid is present in a stoichiometric excess of from about 10% to ...

Подробнее
Номер записи: 35
23-01-2020 дата публикации

A FLOTATION ARRANGEMENT, ITS USE, A PLANT AND A METHOD

Номер: US20200023380A1
Автор: Bourke Peter, Rinne Antti
Принадлежит:

A flotation arrangement for treating mineral ore particles suspended in slurry. The arrangement includes a primary line including at least two primary flotation cells, a first secondary line, and a second secondary line downstream of the first secondary line. In the arrangement, underflow from a secondary line is arranged to flow to the last of the at least one primary flotation cells from which the primary overflow was received, or to a primary flotation cell downstream of the last of the at least one primary flotation cells from which the primary overflow was received. The disclosure further relates a use of a flotation arrangement, to a flotation plant and to a flotation method. 179.-. (canceled)80. A flotation arrangement for treating mineral ore particles suspended in slurry , comprising flotation cells for the separation of the slurry into an underflow and an overflow , wherein the separation is performed with the help of flotation gas , and wherein the flotation arrangement comprises:a primary line comprising at least two primary flotation cells connected in series, wherein each subsequent primary flotation cell is arranged to receive underflow from the previous primary flotation cell;a first secondary line comprising a secondary flotation cell in fluid communication with at least one first primary flotation cell and arranged to receive primary overflow of the at least one first primary flotation cell for the recovery of a first concentrate,a further secondary line downstream of the first secondary line, the further secondary line comprising a secondary flotation cell in fluid communication with a further primary flotation cell and arranged to receive primary overflow of the further primary flotation cell for the recovery of the first concentrate,wherein underflow from a secondary line is arranged to flow to the last of the at least one primary flotation cells from which the primary overflow was received, or to a primary flotation cell downstream of the last ...

Подробнее
Номер записи: 36
02-02-2017 дата публикации

RECOVERY METHOD OF USEFUL RESOURCES IN SEAWATER AND BRINE

Номер: US20170029920A1
Автор: CHUNG Kang-Sup, HONG Hye-Jin, KIM Byoung-Gyu, Park In-Su, Ryu Jungho, RYU Taegong
Принадлежит:

Provided is a recovery method of useful resources in seawater and brine, and more particularly, a recovery method of useful resources in seawater and brine capable of improving adsorption efficiency and recovery efficiency of trace amounts of useful resources such as strontium, lithium, boron, or the like, present in brine at low cost by using a magnetic adsorbent composite and a solid-liquid separation process which uses magnetic force. 1. A recovery method of useful resources in seawater and brine , the recovery method comprising:(a) adsorbing the useful resources in the seawater and brine using a magnetic adsorbent composite;(b) obtaining a useful resource desorption solution in which the useful resources are concentrated by desorbing the useful resources adsorbed in the magnetic adsorbent composite using a desorption solution; and(c) obtaining a compound from the useful resource desorption solution.2. The recovery method of claim 1 , wherein the magnetic adsorbent composite has a multilayer structure in which a core layer is made of magnetic particles claim 1 , an adsorbent material layer is formed by coating a useful resource-adsorbent material on a surface of the core layer claim 1 , and a binder layer is further formed between the core layer and the adsorbent material layer.3. The recovery method of claim 1 , wherein the useful resources are one or two or more selected among lithium claim 1 , strontium claim 1 , and boron.4. The recovery method of claim 2 , wherein the magnetic particles are made of one or two or more selected among iron claim 2 , nickel claim 2 , cobalt claim 2 , manganese claim 2 , gadolinium claim 2 , and oxides thereof claim 2 , magnetite claim 2 , maghemite claim 2 , iron monoxide claim 2 , iron nitride claim 2 , a cobalt platinum chromium alloy claim 2 , a barium ferrite alloy claim 2 , an aluminum manganese alloy claim 2 , an iron platinum alloy claim 2 , an iron palladium alloy claim 2 , a cobalt platinum alloy claim 2 , and a ...

Подробнее
Номер записи: 37
04-02-2021 дата публикации

METHOD FOR PRODUCING HIGH-PURITY SCANDIUM OXIDE

Номер: US20210032119A1
Автор: Higaki Tatsuya, Kobayashi Hiroshi
Принадлежит:

Provided is a method for obtaining high-purity scandium oxide efficiently from a solution containing scandium. The method for producing high-purity scandium oxide of the present invention has a first firing step S for subjecting a solution containing scandium to oxalation treatment using oxalic acid and firing the obtained crystals of scandium oxalate at a temperature of 400 to 600° C., inclusive, a dissolution step S for dissolving the scandium compound obtained by firing in one or more solutions selected from hydrochloric acid and nitric acid to obtain a solution, a reprecipitation step S for subjecting the solution to oxalation treatment using oxalic acid and generating a reprecipitate of scandium oxalate, and a second firing step S for firing the reprecipitate of obtained scandium oxalate to obtain scandium oxide. 1. A method for producing high-purity scandium oxide , the method comprising:a first calcination step of subjecting a solution containing scandium to an oxalate formation treatment using oxalic acid and calcinating crystals of obtained scandium oxalate at a temperature of 400° C. to 600° C.;a dissolution step of dissolving a scandium compound obtained by calcinating, in at least one selected from hydrochloric acid and nitric acid to obtain a solution;a reprecipitation step of subjecting the solution to an oxalate formation treatment using oxalic acid to generate a reprecipitation product of scandium oxalate; anda second calcination step of calcinating the obtained reprecipitation product of scandium oxalate to obtain scandium oxide.2. The method for producing high-purity scandium oxide according to claim 1 ,wherein in the reprecipitation step, the oxalate formation treatment is performed while a temperature of the solution is adjusted to 40° C. or higher and lower than 100° C.3. The method for producing high-purity scandium oxide according to claim 1 , wherein in the second calcination step claim 1 , the calcination is performed while a calcination ...

Подробнее
Номер записи: 38
04-02-2021 дата публикации

Method and system for determining waste metal batch composition taking into account differences in surface and interior composition

Номер: US20210033506A1
Автор: Daniel Bitton
Принадлежит: House of Metals Co Ltd

Described herein is a method for recycling aluminum alloy wheels. The method includes the steps of providing a feed of aluminum alloy wheels of a particular alloy; fragmenting the aluminum alloy wheels into a plurality of fragments, such that newly exposed surfaces of the plurality of fragments have an interior composition; determining a newly exposed surface indicia for distinguishing each newly exposed surface in the feed of aluminum alloy wheels; determining an aggregate composition estimate by determining a plurality of composition measurements of the material of fragments of the plurality of fragments; and providing the plurality of fragments, and the aggregate composition estimate, for use in manufacturing at least one component made from aluminum alloy.

Подробнее
Номер записи: 39
24-02-2022 дата публикации

CRUSHING METHOD FOR GALVANIC CELLS WITH HIGH ENERGY DENSITIES

Номер: US20220056553A1
Автор: HUPKA Jan, HUPKA Lukasz
Принадлежит:

A crushing method for galvanic cells with high energy densities in which mixture of used cells is placed inside an insulated container and carbon dioxide as dry ice is added to this mixture as a cooling medium. Dry ice is added to the mixture of used galvanic cells at a volumetric ration of 0.5:1 to 2:1. The mixture of used cells with dry ice is cooled down from −20° C. to −50° C. and is subsequently fed to the crushing device and subjected to crushing. A stream of used galvanic cells and a stream of dry ice granules are preferably fed simultaneously to the insulated container of the crushing device, and this mixture is forwarded to the working part of the crushing device. At the end of galvanic cell crushing, the mixture of air and gaseous carbon dioxide is returned to the insulated container. 1. A method for galvanic cells with high energy densities , wherein a mixture of used cells is placed inside an insulated container and a cooling medium is added to this mixture , the temperature of used cells is decreased and the cooled mixture of used cells and of the cooling medium is added to this mixture , the temperature of used cells is decreased and the cooled mixture of used cells and of the cooling medium is then fed to the working unit of the crushing device , wherein the cooling medium is carbon dioxide as dry ice , added to the mixture , the temperature of used galvanic cells at a volumetric ratio between 0.5:1 to 2:1 , and the mixture of used cells with dry ice is cooled down from −20° C. to −50° C. , and the mixture of used cells with dry ice is subsequently fed to the working unit of the crushing device.2. The method according to claim 1 , t wherein said dry ice is a granulate claim 1 , with granule size of 1 mm to 100 mm.3. The method according to claim 1 , wherein said dry ice is a granulate claim 1 , with granule size of 14 mm to 18 mm.4. The method according to claim 1 , wherein alternate layers of dry ice and of used cells are placed in the insulated ...

Подробнее
Номер записи: 40
19-02-2015 дата публикации

METHOD FOR THE INTEGRATION OF CARBOCHLORINATION INTO A STAGED REFORMING OPERATION AS AN ALTERNATIVE TO DIRECT RESIDUE OXIDATION FOR THE RECOVERY OF VALUABLE METALS

Номер: US20150047465A1
Автор: Langley Justin
Принадлежит:

Method of combining industrial processes having inherent carbon capture and conversion capabilities offering maximum flexibility, efficiency, and economics while enabling environmentally and sustainably sound practices. Maximum chemical energy is retained throughout feedstock processing. A hybrid thermochemical cycle couples staged reforming with hydrogen production and chlorination. Hydrogen generated is used to upgrade feedstocks including bitumen, shale, coal, and biomass. Residues of upgrading are chlorinated, metals of interest are removed, and the remainder is reacted with ammonia solution and carbon dioxide to form carbonate minerals. The combination provides emissions free production of synthetic crude oil and derivatives, as well as various metals and fertilizers. Sand and carbonate minerals are potentially the only waste streams. Through this novel processing, major carbon dioxide reduction is afforded byminimizing direct oxidation. Supplemental heat to run the reactions is obtained through external means such as concentrated solar, geothermal, or nuclear. 2. The process as claimed in claim 1 , wherein the combined featuresof the integrated processes reduce the needed capacity and costs of pollution control mechanisms as well as allowing for the complete elimination of carbon dioxide emissions through mineralization and/or conversion by removing portions of the product gas stream and subsequently recycling the remaining gases back though the process for further reaction;in the case of carbon dioxide, involving its reaction to carbon monoxide, conversion to synthesis gas, and its subsequent processing to synthetic petrochemicals.3. The process as claimed in claim 1 , wherein the combined featuresare modified or expanded to accommodate the industrial processes of petrochemical production, conventional or non-conventional hydrocarbon refining operations, bio-refining, metal refining, rare earth separation, ceramics fabrication, glass production, fertilizer ...

Подробнее
Номер записи: 41
18-02-2016 дата публикации

PROCESS AND SYSTEM FOR DE-COATING OF ALUMINUM SCRAP CONTAMINATED WITH ORGANIC COATINGS

Номер: US20160047013A1
Автор: Lill Joseph, Mansfield William A., Whipple Donald
Принадлежит:

A method for removal of organic coatings from loose aluminum scrap includes passing the scrap through a Multiple Hearth Furnace operatively maintained in the range of 500° F.-1600° F. Each hearth in the furnace is independently temperature controlled and held under a slightly negative pressure environment. The hearths heat the scrap such that pyrolysis of the coatings occurs within the hearth. Organic compounds liberated during this process are partially or entirely consumed within the furnace combustion products are exhausted through the top. Hydrogen fluoride contained in the products of combustion is incinerated prior to final discharge from the system and routing to additional environmental equipment for particle removal. Scrap is continuously fed into the top of the furnace, and agitated and mechanically moved within each hearth toward an output of another hearth therebelow. The agitation and movement of the scrap exposes the scrap to the hearth atmosphere to assist in processing of the scrap. The discharge of the scrap in the final hearth supplies hot (250° F.-900° F.), clean material for the next step in the process for secondary aluminum recycling. 1. A method for de-coating aluminum-containing scrap comprising organic compounds , the method comprising the acts of:inputting the aluminum-containing scrap into a multiple hearth furnace comprising a plurality of hearths, the plurality of hearths collectively defining, sequentially, a drying zone, a heating zone, a de-volatizing zone, and a de-charring zone, with each of the drying zone, heating zone, de-volatizing zone, and de-charring zone comprising one or more hearths and with each of the plurality of hearths comprising at least one agitation device to move the aluminum-containing scrap within the hearth and to a successive hearth;maintaining temperatures within at least some of the plurality of hearths between about 500° F. and 1600° F. and agitating the aluminum-containing scrap to induce pyrolysis of the ...

Подробнее
Номер записи: 42
15-02-2018 дата публикации

PROCESS

Номер: US20180044762A1
Автор: HARA Yotamu Stephen Rainford, JHA Animesh, PARIRENYATWA Stephen, SANCHEZ-SEGADO Sergio
Принадлежит: UNIVERSITY OF LEEDS

The present invention relates to a process for recovering a primary metal residue from a metal-containing composition. 1. A process for recovering a primary metal residue from a metal-containing composition comprising:(a) preparing a feedstock of the metal-containing composition and an alkali salt;(b) reductively or oxidatively roasting the feedstock at a roasting temperature for a roasting period to produce a roast;(c) cooling the roast to produce a roasted mass containing metallic iron or an alloy or compound thereof and soluble metal oxides;(d) adding an aqueous medium to the roasted mass to form a substantially insoluble product and a first solution of soluble metal oxides;(e) acid leaching the substantially insoluble product or a fraction thereof to produce a leach residue and a second solution of soluble metal oxides;(f) roasting the leach residue in the presence of a bisulphate or bicarbonate of an alkali metal or alkaline earth metal to produce a roasted residue; and(g) hydrometallurgically extracting from the roasted residue the primary metal residue and a third solution of soluble metal oxides.2. The process as claimed in claim 1 , wherein the bisulphate or bicarbonate of an alkali metal or alkaline earth metal is a bisulphate or bicarbonate of an alkali metal.3. The process as claimed in claim 1 , wherein the bisulphate or bicarbonate of an alkali metal or alkaline earth metal is NaHSO.4. The process as claimed in claim 1 , further comprising: recovering one or more metal value-containing precipitates from the first solution of soluble metal oxides.5. The process as claimed in claim 1 , further comprising: recovering one or more metal value-containing precipitates from the third solution of soluble metal oxides.6. The process as claimed in claim 1 , further comprising:(d1) separating a rare earth oxides-containing colloidal solution from the surface of the first solution of soluble metal oxides.7. The process as claimed in claim 1 , wherein the metal- ...

Подробнее
Номер записи: 43
08-05-2014 дата публикации

METHOD FOR PRODUCING R-FE-B BASED PERMANENT MAGNET ALLOY RECYLCED MATERIAL HAVING REMOVED CARBON

Номер: US20140123809A1
Автор: Furusawa Katsuyoshi, KIKUGAWA Atsushi
Принадлежит: HITACHI METALS, LTD.

An object of the present invention is to provide a method for producing an alloy recycled material by effectively removing carbon from a carbon-containing alloy, which is produced as scrap or sludge of an R—Fe—B based permanent magnet, a used magnet, or the like. The method of the present invention as a means for resolution is characterized in that a carbon-containing R—Fe—B based permanent magnet alloy is subjected to an HDDR treatment to remove carbon. An alloy recycled material produced by the method of the present invention contains a reduced amount of carbon. Therefore, in the case where it is recycled for the production of a magnet, even when an increased amount is subjected to high-frequency heating in a vacuum melting furnace, a non-negligible increase in the amount of carbon contained in the produced magnet can be avoided. 1. A method for producing an R—Fe—B based permanent magnet alloy recycled material , characterized in that a carbon-containing R—Fe—B based permanent magnet alloy to be melted by heating and recycled after the removal of carbon is subjected to an HDDR treatment to remove carbon.2. The method according to claim 1 , characterized in that the carbon-containing R—Fe—B based permanent magnet alloy is in the form of a powder having a particle size of 75 μm to 850 μm.3. The method according to claim 1 , characterized in that the HDDR treatment includes an HD step performed in a hydrogen gas atmosphere at 600° C. to 900° C.4. A method for removing carbon from a carbon-containing R—Fe—B based permanent magnet alloy claim 1 , characterized in that a carbon-containing R—Fe—B based permanent magnet alloy to be melted by heating and recycled after the removal of carbon is subjected to an HDDR treatment.5. A method for producing an R—Fe—B based permanent magnet claim 1 , characterized in that an alloy recycled material produced by the method for producing an R—Fe—B based permanent magnet alloy recycled material according to is used as at least a part ...

Подробнее
Номер записи: 44
14-02-2019 дата публикации

PLANT AND METHOD FOR RECOVERING AND TREATING RESIDUES FROM CRUSHING FERROUS SCRAP

Номер: US20190046992A1
Автор: BRAGA Davide, GUTKNECHT Hans Rudolf, PRIMAVERA Alessandra, TIBURZIO Selena
Принадлежит:

A plant for recovering and treating residues from crushing scrap is provided. The plant includes a first plant part and a second plant part. The first plant part is provided with crushing and separation means configured to extract ferrous materials, non-ferrous metals and plastic materials from the residues from crushing. The separation means are provided with a granulator system configured to reduce, in dry mode and without pre-screening stages, the residues from crushing into a stream of granular material. The second plant part is provided with means to treat and size the plastic materials configured to transform the plastic materials into additive material to be used, in particular, in iron and steel plants such as blast furnaces, electric arc furnaces or suchlike. The means to treat and size the plastic materials includes a dry system for cutting and/or grinding the plastic materials. 116.-. (canceled)1712. Plant for recovering and treating residues from crushing scrap () comprising:{'b': '110', 'claim-text': [{'b': 11', '12, 'a granulator system (), that is a first grinding or crushing system, configured to reduce, in dry mode and without pre-screening stages, the residues from crushing () into a stream (F) of granular material;'}, {'b': 13', '15', '17', '19', '11', '14', '20', '16', '24', '12, 'separation means (, , , ) located downstream of the granulator system () and configured to extract ferrous materials (), non-ferrous metals () and light or heavy plastic materials (, ) from said residues from crushing (); and'}], 'a first plant part () provided with{'b': '210', 'claim-text': [{'b': 32', '33', '16', '24', '16', '24', '40', '32', '33', '16', '24', '33', '16', '24, 'means (, ) to treat and size the plastic materials (, ) configured to transform said plastic materials (, ) into additive material to be used, in particular, in iron and steel plants () such as blast furnaces, electric arc furnaces or suchlike; said means (, ) to treat and size the plastic ...

Подробнее
Номер записи: 45
25-02-2016 дата публикации

RECYCLE OF TITANIUM DIBORIDE MATERIALS

Номер: US20160052795A1
Автор: DiMilia Robert A., McMillen James C., Phelps Frankie A., Schnitgen Andrew L., Weaver Mark L.
Принадлежит:

A method to recycle TiB2 articles, and in particular, a method to recycle a TiB2 feedstock including TiB2 articles and Ti-ore and/or Ti-slag by chlorination. 1. A method to produce a titanium product , comprising:preparing a TiB2 feedstock; andchlorinating the prepared TiB2 feedstock to produce a titanium chloride product.2. The method of claim 1 , wherein the TiB2 feedstock comprises TiB2 articles claim 1 , and the preparing of the TiB2 feedstock comprises crushing the TiB2 articles to a predetermined average TiB2 particle size or TiB2 particle size distribution.3. The method of claim 2 , wherein the TiB2 articles comprise at least one of TiB2 armor products claim 2 , TiB2 tool products claim 2 , TiB2 coatings claim 2 , TiB2 electrodes claim 2 , and TiB2 powders.4. The method of wherein the TiB2 feedstock consists essentially of crushed TiB2 articles.5. The method of claim 4 , wherein the crushed TiB2 articles comprise at least one of sodium and fluorine residues.6. The method of claim 5 , wherein the crushed TiB2 articles comprise no more than 2% sodium and fluorine residues.7. The method of claim 2 , wherein the preparing of the TiB2 feedstock further comprises combining the TiB2 articles with at least one of Ti-containing ores and Ti-slag.8. The method of claim 3 , wherein preparing of the TiB2 feedstock further comprises crushing the combination of TiB2 articles with at least one of Ti-containing ores and Ti-slag to a predetermined average particle size or particle size distribution to prepare the TiB2 feedstock.9. The method of claim 8 , wherein the Ti-containing ore comprises ilmenite.10. The method of claim 9 , wherein the Ti-containing ore comprises has a TiO2 content of at least 80% by weight.11. The method of claim 10 , wherein the Ti-slag comprises smelting products of ilmenite ore processed to lower the iron content thereof.12. The method of claim 11 , wherein the Ti-slag has a TiO2 content of at least 85%.13. The method of claim 12 , wherein the TiB2 ...

Подробнее
Номер записи: 46
22-02-2018 дата публикации

PROCESS FOR THE SEPARATION AND PURIFICATION OF SCANDIUM MEDICAL ISOTOPES

Номер: US20180051359A1
Автор: BROWN Michael Alexander, Jr. Jerry A., Nolen, ROTSCH David Alan
Принадлежит: UCHICAGO ARGONNE, LLC

The invention provides a method for isolating scandium, the method having the steps of dissolving titanium nuclear targets to create a solution; contacting the solution with a resin so as to retain scandium on the resin and generate an eluent containing titanium; contacting the scandium-containing resin with acid of a first concentration to remove impurities from the resin; and contacting the scandium-containing resin with an acid of a second concentration to remove scandium from the resin. 1. A method for isolating radioactive isotopes , the method comprising:a. dissolving irradiated targets to create a solution;b. contacting the solution with a resin so as to retain the isotopes on the resin and generate an eluent containing titanium;c. contacting the isotopes-containing resin with acid of a first concentration to remove impurities from the resin; andd. contacting the isotopes-containing resin with an acid of a second concentration to remove the isotopes from the resin.2. The method as recited in wherein the resin comprises normal diglycoamides or branched diglycoamides.3. The method as recited in wherein the first concentration is higher than the second concentration.4. The method as recited in wherein the solution comprises sulfuric acid and the isotopes.5. The method as recited in wherein a single resin bed is used for all of the steps.6. The method as recited in wherein the removed isotope is subjected to filtration.7. The method as recited in wherein the isotope has a purity value of greater than 95 percent.8. The method as recited in wherein the target comprises titanium and isotope is Sc-47 and is isolated in about two hours having a purity of greater than 95 percent.9. The method as recited in wherein the step of dissolving titanium comprises mixing the titanium with sulfuric acid.10. The method as recited in wherein the step of dissolving titanium comprises mixing the titanium with hydrofluoric acid.11. The method as recited in wherein the titanium ...

Подробнее
Номер записи: 47
03-03-2016 дата публикации

Method for processing vanadium-titanium magnetite finished ores by using wet process

Номер: US20160060728A1
Автор: Desheng Chen, Hongxin ZHAO, Jingkui QU, Lina Wang, Tao Qi, Tianyan XUE, Yahui Liu
Принадлежит: Institute of Process Engineering of CAS

A method for processing vanadium-titanium magnetite finished ores by using a wet process. The method comprises the steps: extracting vanadium from vanadium-titanium magnetite finished ores and processing, by using the vanadium extraction method, obtained leaching residue by using a wet process, so as to obtain titanium; and calcining the remaining liquid extracted during the vanadium extraction, so as to prepare ferric oxide. The flow of the method is short, and the energy consumption is low, thereby avoiding waste of a titanium resource.

Подробнее
Номер записи: 48
20-02-2020 дата публикации

Triple chamber furnace for scrap segregation and melting

Номер: US20200056259A1
Автор: Abulnaga Baha Elsayed
Принадлежит:

The invention is a continuation of U.S. Pat. No. 9,617,610 issued on Apr. 11, 2017. It consists of a process to treat comingled and co-mixed ferrous and non-ferrous scrap by heat from flue gases generated in the hearth of the furnace, charging and melting the treated ferrous scrap after removing contaminants and non-ferrous elements of the scrap through a three step process in a triple chamber furnace (FIGS. and ). The furnace consists of a first chamber () where the scrap is loaded, and treated in an oxygen deficient flue gas atmosphere downstream of a heat recuperator (), at high temperature to cause the peeling and melting of zinc from galvanized scrap, the melting of non-ferrous components of the scrap and their collection at the bottom of the chamber at a dedicated spout () to a crucible (), the pyrolysis of paints, plastic and used tire contaminants of the scrap. Upstream of the recuperator flue gas from the second stage, or charging and melting chamber () rise to exchange heat in the recuperator () and pre-heat combustion air on its way to the primary burner of the furnace (). Ferrous scrap after being separated from non ferrous elements is charged into the second stage or charging and melting chamber (); the chamber having a floor sloped at an angle less than the angle of repose of steel in a solid form, so that the molten iron and steel can flow to the third stage or hearth () where carbon is added at the carburizer (), alloying elements at the charging spout () and oxygen carrying gases, gaseous, liquid and pulverized solid fuel are applied at the burner () to complete the refining of the scrap and their discharge for castings. To achieve the pyrolysis needed to eliminate coating, paint, rubber tires, plastic scrap, the combustion in the hearth is completed at stoichometric ratio to deplete the flue gases from oxygen. Flue gases on the discharge of the triple chamber Cokeless furnace are treated by conventional methods to extract dust, condense and ...

Подробнее
Номер записи: 49
20-02-2020 дата публикации

METHOD AND SYSTEM FOR PROCESSING RARE EARTH CONCENTRATE ORE

Номер: US20200056265A1
Автор: DU Guoshan, QIN Bo, QIU Shuang, Tang Jianwen, XIAN Pengfei, ZHOU Wenlong
Принадлежит:

Provided are a method and a system for processing a rare earth concentrate ore. The method comprises (1) mixing the rare earth concentrate ore and concentrated sulfuric acid, thereby obtaining a mixed slurry and a first fluorine-containing gas; (2) mixing the mixed slurry and an initiator liquid for acidolysis, thereby obtaining a clinker and a second fluorine-containing gas; (3) subjecting the clinker to leaching with water, thereby obtaining a leached slurry; (4) subjecting the leached slurry to a solid-liquid separation, thereby obtaining a filtrate and a leached slag, and recycling the leached slag to step (2) for acidolysis again. 1. A method for processing a rare earth concentrate ore , comprising:(1) mixing the rare earth concentrate ore and concentrated sulfuric acid, thereby obtaining a mixed slurry and a first fluorine-containing gas;(2) mixing the mixed slurry and an initiator liquid for acidolysis, thereby obtaining a clinker and a second fluorine-containing gas;(3) subjecting the clinker to leaching with water, thereby obtaining a leached slurry;(4) subjecting the leached slurry to a solid-liquid separation, thereby obtaining a filtrate and a leached slag, and recycling the leached slag to step (2) for acidolysis again.2. The method according to claim 1 , wherein before mixing the rare earth concentrate ore and concentrated sulfuric acid claim 1 , the method further comprises:(5) subjecting the rare earth concentrate ore to ball-milling, thereby obtaining rare earth concentrate ore particles;(6) sieving the rare earth concentrate ore particles, thereby obtaining an oversize material and an undersize material, and recycling the oversize material to ball-milling and mixing the undersize material and concentrated sulfuric acid.3. The method according to claim 1 , further comprising:(7) subjecting the first fluorine-containing gas and the second fluorine-containing gas to spraying with a spray liquid, thereby obtaining a fluorine-containing slurry.4. The ...

Подробнее
Номер записи: 50
22-05-2014 дата публикации

PROCESS FOR REMOVING URANIUM IN COPPER CONCENTRATE VIA MAGNETIC SEPARATION

Номер: US20140137703A1
Автор: Bergerman Mauricio Guimarães, Da Silva Wesley José, Gonçalves Keila Lane de Carvalho, MARQUES Antonio Euclides Jaques, Rodrigues Wendel Johnson
Принадлежит: VALE S.A.

The present invention describes a process for removing uranium from a copper concentrate by magnetic separation (low and high field) to reduce the uranium content to commercially acceptable levels. 1. Process for removing uranium from copper concentrates via magnetic separation comprising the steps of:{'sub': '80', 'i. magnetic separation of the copper concentrates to provide a magnetic fraction (a) and a non-magnetic fraction (b) with size distribution of about 15 micron to about 40 micron (P), the magnetic fraction having a uranium content of about 20 ppm to about 100 ppm and obtaining about 75% to about 99.99% of the non-magnetic fraction;'}{'sub': '80', 'ii. grinding the magnetic fraction (a) to produce a magnetic copper concentrate with a fine size distribution of about 5 micron to about 15 micron (P) with a uranium content of about 100 ppm to about 300 ppm;'}iii. fine flotation of the magnetic copper concentrate to produce a recovered copper concentrate with about 0.01% to about 25% copper and a uranium content of about 100 ppm to about 300 ppm; andiv. mixing the non-magnetic fraction (b) with the recovered copper concentrate of step iii to produce a final concentrate (c) with a uranium content of about 40 ppm to about 150 ppm and about 65% to about 99.99% copper.2. The process for removing uranium from copper concentrates via magnetic separation claim 1 , according to claim 1 , wherein the uranium comprises uranium oxides (uraninite) claim 1 , associated with copper sulphides (54%) claim 1 , magnetite (14%) and other oxides (paramagnetic claim 1 , 7%).3. The process for removing uranium from copper concentrates via magnetic separation claim 1 , according to claim 1 , wherein the non-magnetic fraction (b) comprises a uranium content of about 20 ppm to about 100 ppm.4. The process for removing uranium from copper concentrates via magnetic separation claim 1 , according to claim 1 , wherein the final concentrate (a)+(c) has a uranium content of about 40 ppm to ...

Подробнее
Номер записи: 51
12-03-2015 дата публикации

INTEGRATED PROCESS FOR PRODUCTION OF OZONE AND OXYGEN

Номер: US20150068365A1
Автор: Dholakia Vipul P., Golden Timothy Christopher, SISODIA Sunita S.
Принадлежит:

Embodiments of the present invention provide systems and methods for efficiently producing both a low-pressure ozone stream and high-pressure oxygen stream using a single air separation unit. The low-pressure ozone stream and high-pressure oxygen stream can be produced with significant energy savings and can be used in variety of applications, including the extraction of precious metals from ore with aqueous oxidation reactors and high-pressure oxidation reactors. 1. A process for producing oxygen and ozone , comprising:(a) compressing an air feed stream;(b) introducing the compressed air stream into an air separation unit to produce a purified oxygen stream;(c) introducing the purified oxygen stream into an ozone generator to produce a resultant stream comprising oxygen and ozone;(d) compressing the resultant stream;(e) introducing the compressed resultant stream into a first reactor;(f) performing an oxidation reaction in the first reactor to produce an oxygen-rich effluent stream;(g) compressing the oxygen-rich effluent stream from the first reactor;(h) introducing the compressed oxygen-rich stream into a second reactor; and(i) performing an oxidation reaction in the second reactor.2. The process of claim 1 , wherein step (i) comprises performing an oxidation reaction comprising a combustion claim 1 , roasting claim 1 , high pressure oxidation or autoclaving reaction.3. The process of claim 1 , wherein step (f) comprises oxidizing inorganic and/or organic materials.4. The process of claim 1 , wherein step (f) comprises oxidizing inorganic and/or organic materials in an aqueous solution.5. The process of claim 1 , wherein steps (a) through (i) are performed in the order presented in .6. The process of claim 1 , further comprising:(j) prior to performing step (g), pretreating the oxygen-rich effluent stream from the first reactor in an ozone destruct unit to decompose any unreacted ozone and produce an oxygen-rich stream.7. The process of claim 6 , wherein step (j) ...

Подробнее
Номер записи: 52
29-05-2014 дата публикации

MIXED COLLECTOR COMPOSITIONS

Номер: US20140144290A1
Автор: Martins Luiz Henrique
Принадлежит: GEORGIA-PACIFIC CHEMICALS LLC

Collector compositions and methods for making and using same are provided. The collector can include one or more etheramines and one or more amidoamines. A liquid suspension or slurry comprising one or more particulates can be contacted with the collector to produce a treated mixture. A product can be recovered from the treated mixture that includes a purified liquid having a reduced concentration of the particulates relative to the treated mixture, a purified particulate product having a reduced concentration of liquid relative to the treated mixture, or both. 2. The method of claim 1 , wherein the amidoamine is made by reacting tall oil fatty acids and one or more polyamines.3. The method of claim 1 , wherein the amidoamine is made by reacting one or more carboxylic acids and one or more polyamines.4. The method of claim 3 , wherein the polyamine is diethylenetriamine claim 3 , 1 claim 3 ,3-diaminopentane claim 3 , or a mixture thereof.5. The method of claim 1 , wherein the weight ratio of the amidoamine to the etheramine is from about 35:65 to about 65:35.6. The method of claim 1 , wherein the one or more particulates comprise iron claim 1 , one or more iron oxides claim 1 , or a mixture thereof claim 1 , and wherein the purified particulate product is recovered.7. The method of claim 1 , wherein the one or more particulates comprise phosphorus claim 1 , one or more phosphorus oxides claim 1 , or a mixture thereof claim 1 , and wherein the purified particulate product is recovered.8. The method of claim 1 , wherein the one or more particulates comprise silica claim 1 , and wherein the purified particulate product is recovered.9. The method of claim 1 , wherein the liquid in the liquid suspension comprises water.10. The method of claim 1 , wherein the liquid suspension further comprises one or more contaminants claim 1 , and wherein the purified particulate product is recovered claim 1 , and wherein the purified particulate product has a reduced concentration of ...

Подробнее
Номер записи: 53
10-03-2016 дата публикации

METHOD FOR THE INTEGRATION OF CARBOCHLORINATION INTO A STAGED REFORMING OPERATION AS AN ALTERNATIVE TO DIRECT RESIDUE OXIDATION FOR THE RECOVERY OF VALUABLE METALS

Номер: US20160068926A1
Автор: Langley Justin
Принадлежит:

Method of combining industrial processes having inherent carbon capture and conversion capabilities offering maximum flexibility, efficiency, and economics while enabling environmentally and sustainably sound practices. Maximum chemical energy is retained throughout feedstock processing. A hybrid thermochemical cycle couples staged reforming with hydrogen production and chlorination. Hydrogen generated is used to upgrade feedstocks including bitumen, shale, coal, and biomass. Residues of upgrading are chlorinated, metals of interest are removed, and the remainder is reacted with ammonia solution and carbon dioxide to form carbonate minerals. The combination provides emissions free production of synthetic crude oil and derivatives, as well as various metals and fertilizers. Sand and carbonate minerals are potentially the only waste streams. Through this novel processing, major carbon dioxide reduction is afforded by minimizing direct oxidation. Supplemental heat to run the reactions is obtained through external means such as concentrated solar, geothermal, or nuclear. 140-. (canceled)41. An apparatus for separating rare earth elements from an alkali halide melt , the apparatus comprising:i. an alkali halide melt of mixed composition containing at least some amount of rare earth halidesii. a beta alumina solid electrolyte functioning as a means of cationic exchangeiii. at least one other molten salt in contact with the beta alumina solid electrolyte materialwhich provides a means for the transport or exchange of cationic species from one melt to at least one other melt.42. The apparatus as claimed in claim 41 , further comprising one or more of the following:i. means of precise control of one or more molten salts so as to establish selective cationic transport through chemical gradientii. means of an imposed pressure gradient between the molten salts so as to establish selective cationic transport through dispersioniii. means of an imposed electrical gradient between ...

Подробнее
Номер записи: 54
10-03-2016 дата публикации

METHOD OF PREPARING A GOLD-CONTAINING SOLUTION AND PROCESS ARRANGEMENT FOR RECOVERING GOLD AND SILVER

Номер: US20160068927A1
Автор: AHTIAINEN Riina, Haapalainen Mika, HIETALA Kari, Miettinen Ville, Paatero Erkki, VALKAMA Kari
Принадлежит: OUTOTEC (FINLAND) OY

The invention relates to a method for preparing a gold-containing solution by chloride leaching from gold-bearing raw materials. A further object of the invention is to provide a method for recovering gold and optionally silver from the prepared gold-containing solution. The invention relates also to a process arrangement for recovering gold and optionally silver. 1. A method of preparing a gold-containing solution froth gold-bearing raw materials , wherein the method comprises(a) a gold leaching step, wherein the gold-bearing raw material is subjected to oxidative chloride leaching in an aqueous leaching liquor in the following conditions:(i) the aqueous leaching liquor contains dissolved cupric ions (Cu2+), chloride (CI″) and bromide (Br″),(ii) pH is within a range wherein the cupric ion does not precipitate, (iii) the oxidation potential is at least 450 mV Pt vs. Ag/AgCI, to provide a gold-containing solution optionally further containing silver,(b) a liquid/solid separation step, wherein the gold-containing solution is separated from the undissolved solid material;(c) a gold recovery step, wherein gold is recovered from the gold-containing solution from step (b) to obtain a gold-bearing organic solution and a gold-depleted leach solution containing Cu2+, CI″ and Br″; and(c′) an evaporation step, wherein gold-depleted leach solution from step (c) containing Cu2+, CI″ and Br″ is evaporated for removing excess water; and(d) a circulation step, wherein the gold-depleted leach solution obtained from the evaporation step containing Cu2+, CI″ and Br″ is circulated to the leaching step (a).2. The method as claimed in claim 1 , wherein the gold-bearing raw material is selected from ores claim 1 , concentrates claim 1 , scraps claim 1 , recycled materials leach residues claim 1 , tailings claim 1 , such as flotation tailings claim 1 , and refractory gold materials claim 1 , which refractory gold materials have been pretreated by pressure oxidation claim 1 , roasting and/ ...

Подробнее
Номер записи: 55
10-03-2016 дата публикации

EXTRACTION OF RARE EARTH METALS FROM NdFeB USING SELECTIVE SULFATION ROASTING

Номер: US20160068929A1
Автор: Carlson Brett N., Taylor Patrick R.
Принадлежит:

Sulfuric acid baking allows for the selective extraction of rare earth metals from scrap NdFeB magnets. This process has the advantage of making the high-value rare earth metals water soluble while converting the contained iron, around 70% of the magnet's mass, into stable and insoluble iron (III) oxide, eliminating the need for separating and precipitating iron from solution. The process also has the advantage of safely disposing of metalworking fluid contained in rare earth magnet machine waste, a troublesome contaminate from technical and environmental perspective. 1. A method for extracting rare earth metals from a rare earth containing material , comprising:mixing the rare earth containing material with an acid and water to form a slurry, wherein the rare earth containing material comprises at least one rare earth metal and at least one other metal;roasting the slurry under oxidizing conditions at temperatures between about 200° C. and about 900° C. to form a baked mixture and an off gas;leaching the baked mixture in an aqueous solution to form a liquid leaching product comprising at least one soluble rare earth ion, and a solid leaching residue comprising at least one other insoluble metal oxide; andseparating the at least one soluble rare earth ion from the liquid leaching product by precipitation.2. The method of claim 1 , wherein said slurry is comprised of at least about 1.5 gram of acid per 1 gram said rare earth bearing material.3. The method of claim 1 , wherein the acid is sulfuric acid.4. The method of claim 1 , wherein said precipitation is performed with oxalic acid as the precipitation agent.5. The method of claim 1 , wherein said precipitation comprises a first a solvent extraction stage which separates individual rare earths into different process streams prior to precipitation6. The method of claim 1 , wherein said baking is performed in a rotary kiln or a multiple hearth furnace.7. The method of claim 1 , wherein the baked mixture comprises at ...

Подробнее
Номер записи: 56
11-03-2021 дата публикации

METHOD FOR REMOVING PHOSPHORUS FROM PHOSPHORUS-CONTAINING SUBSTANCE

Номер: US20210071274A1
Автор: Kikuchi Naoki, NAKAI Yoshie, Nakase Kenji
Принадлежит: JFE STEEL CORPORATION

Proposed is a method for removing phosphorus from a phosphorus-containing substance which is applicable in an industrial scale so as to effectively reduce phosphorus contained in the phosphorus-containing substance. In this method, the phosphorus-containing substance used as a raw material for metal smelting or metal refining is reacted with a nitrogen-containing gas at a treatment temperature T (° C.) which is lower than a melting temperature (T) of the substance, so that phosphorus is removed preferably in the form of phosphorus nitride (PN). In this regard, a nitrogen partial pressure and an oxygen partial pressure in the nitrogen-containing gas are preferably controlled, thereby reducing a load of dephosphorization process, for example. 1. A method for removing phosphorus from a phosphorus-containing substance ,{'sub': 'm', 'characterized in that the phosphorus-containing substance used as a raw material for metal smelting or metal refining is reacted with a nitrogen-containing gas at a treatment temperature T (° C.) which is lower than a melting temperature (T) of the substance.'}2. The method for removing phosphorus from a phosphorus-containing substance according to claim 1 ,wherein phosphorus nitride (PN) is formed by a reaction of the phosphorus-containing substance with the nitrogen-containing gas and removed.3. The method for removing phosphorus from a phosphorus-containing substance according to claim 1 ,{'sub': N2', 'O2, 'wherein the reaction of the phosphorus-containing substance with the nitrogen-containing gas is performed under control of a nitrogen partial pressure Pand an oxygen partial pressure Pin the nitrogen-containing gas.'}4. The method for removing phosphorus from a phosphorus-containing substance according to claim 1 ,{'sub': 'N2', 'claim-text': [{'br': None, '[Formula 1]'}, {'br': None, 'i': 'P', 'sub': 'N2', '0.2≤≤0.9\u2003\u2003(1)'}], 'wherein the nitrogen partial pressure P(atm) in the nitrogen-containing gas is controlled to satisfy ...

Подробнее
Номер записи: 57
11-03-2021 дата публикации

Method of Processing and Treatment of Alunite Ores

Номер: US20210071281A1
Автор: Agajeva Lale, Taghiyev Eldar, Tagijev Elsad
Принадлежит:

The alunite ore processing method consists of crushing, grinding and flotation of raw alunite ore. The enriched alunite ore is roasted at 520 to 620° C., the roasting time is 1 to 3 hours. The roasted alunite is leached with 5 to 20% sodium carbonate solution, which is in 100 to 110% of the stoichiometric amount required to bond the SOaluminum sulfate in the alunite with leaching conditions of 70-100° C. for 0.5-2.0 hours. The obtained slurry contains all of the potassium sulfate from the alunite and all of the sodium sulfate obtained from sodium carbonate. In the insoluble residue remains all aluminium oxide and residual rock. The sulfate solution is separated from the insoluble residue and is converted with potassium chloride to potassium sulphate (fertilizer) and kitchen salt. The insoluble residue is treated by the Bayer method without the use of an autoclave and results in aluminium oxide (alumina) and quartz sand. 1. Process for the treatment of alunite ores comprises the following steps:crushing of alunite ore,grinding the alunite ore,enrichment of the alunite ore by flotation to the content of at least 50% of alunite by weight,roasting at 520 to 620° C. for 1 to 3 hours,{'sub': '3', 'preparation of a sodium carbonate solution, which is later used in a leaching process characterized in that the sodium carbonate solution comprises 5 to 20% sodium carbonate solution and is added to the alunite ore in a quantity of 100 to 110% of the stoichiometric amount required to bond the SOto the aluminum sulphate in the alunite ore, thereby forming a sodium sulphite solution,'}separation of the sodium sulphate solution from an insoluble residue,conversion of the sodium sulphate with KCl to potassium sulphate and sodium chloride to form a suspension,filtration and washing of the suspension to form a filtrate and washing water,evaporation of the filtrate and of the washing water, andtreating the insoluble residue by the Bayer method without the use of an autoclave to form a ...

Подробнее
Номер записи: 58
24-03-2016 дата публикации

SOLDER RECOVERY UNIT

Номер: US20160082536A1
Автор: Almeida Fernando
Принадлежит:

A method for recovering solder from solder coated scrap pieces includes a step of containing a quantity of solder coated scrap pieces within a centrifuge receptacle of a first centrifuge. The centrifuge receptacle has perforation holes and is rotatably mounted about a first centrifuge axis. A solder collection container surrounds the centrifuge receptacle. The method further includes the steps of heating the solder coated scrap pieces and melting the solder thereon with a heater surrounding the solder collection container and with a drive system, rotating the centrifuge receptacle while the first centrifuge axis is in about a horizontal position at a low speed and tumbling the scrap pieces along a longitudinal length of the centrifuge receptacle, and later rotating the centrifuge receptacle at a high speed for centrifugally extracting molten solder from the centrifuge receptacle, radially outwardly through the perforation holes into the solder collection container. 1. A method for recovering solder from solder coated scrap pieces , comprising the steps of:containing a quantity of solder coated scrap pieces within a centrifuge receptacle of a first centrifuge, the centrifuge receptacle has perforation holes and is rotatably mounted about a first centrifuge axis, a solder collection container surrounds the centrifuge receptacle;heating the solder coated scrap pieces and melting the solder thereon with a heater surrounding the solder collection container; andwith a drive system, rotating the centrifuge receptacle while the first centrifuge axis is in about a horizontal position at a low speed and tumbling the scrap pieces along a longitudinal length of the centrifuge receptacle, and later rotating the centrifuge receptacle at a high speed for centrifugally extracting molten solder from the centrifuge receptacle, radially outwardly through the perforation holes into the solder collection container.2. The method according to claim 1 , further comprising the step of ...

Подробнее
Номер записи: 59
24-03-2016 дата публикации

METHOD FOR RECOVERING GOLD FROM REFRACTORY ORE

Номер: US20160083816A1
Автор: Child Daniel E., Davis Ronald V., Gerlach Walter
Принадлежит:

A method of recovering gold from refractory ore containing a carbonaceous material, a sulfide and gold is provided. Gypsum seed crystals are added to a slurry containing a roasted refractory ore or a pressure-oxidized refractory ore to decrease gypsum encapsulation of gold and improve gold recovery. 1. A method of recovering gold from refractory ore comprising:heating refractory ore containing a sulfide and gold to form a hot ore;quenching the hot ore with an aqueous liquid containing a sulfate and calcium to form a hot liquid slurry;adjusting the pH of the hot liquid slurry to form a basic slurry;adding cyanide to the basic slurry to extract gold as a concentrated solution; andrecovering the gold from the concentrated solution, the improvement comprising:adding gypsum seed crystals after the heating step and before the cyanide addition step in an amount sufficient to decrease gypsum encapsulation of gold.2. The method of claim 1 , wherein the gypsum seed crystals are added before the quenching step.3. The method of claim 1 , wherein the gypsum seed crystals are added during the quenching step.4. The method of claim 1 , wherein the gypsum seed crystals are added after the quenching step.5. The method of claim 1 , wherein the gypsum seed crystals are added before the pH adjusting step.6. The method of claim 1 , wherein the gypsum seed crystals are added during the pH adjusting step.7. The method of claim 1 , wherein the gypsum seed crystals are added after the pH adjusting step.8. The method of claim 1 , wherein the refractory ore further contains a carbonaceous material.9. The method of claim 8 , wherein the carbonaceous material comprises elemental carbon or an organic carbon material.10. The method of claim 1 , wherein the sulfide comprises pyrite claim 1 , arsenian pyrite or arsenopyrite.11. The method of claim 1 , wherein the refractory ore is heated in an aqueous slurry and the hot ore is a hot ore slurry.12. The method of claim 1 , further comprising the step ...

Подробнее
Номер записи: 60
24-03-2016 дата публикации

METHOD AND PLANT FOR PROCESSING ROASTED PYRITES

Номер: US20160083817A1
Автор: Böhringer Bertram, DYACHENKO Alexander, LARIN Valeriy, Schönfeld Raik
Принадлежит:

The invention relates to a method and a recovery system for obtaining raw materials from ores and/or ore tailings, in particular a method and a recovery system for recovering metals from ores and/or ore tailings, especially a method and a recovery system for recovering metals from pyrite tailings, preferably from roasted pyrites produced during sulphuric acid manufacture. 115-. (canceled)16. A method for obtaining metals from ores or ore residues in the form of pyrite residues ,wherein the method comprises the following method steps (a) to (e) carried out in the order indicated hereinafter: (i) iron as main constituent and', '(ii) at least one noble metal selected from the group consisting of gold, silver and their combinations or mixtures, and', '(iii) at least one further metal selected from the group consisting of copper, zinc, lead, cobalt, titanium, manganese, vanadium, chromium and their combinations or mixtures;, '(a) providing and processing of a starting material in the form of at least one ore or ore residue, wherein the starting material comprises(b) an oxidation treatment comprising the step of calcining or oxidative roasting of the starting material provided in method step (a), using at least one oxidizing agent to give iron oxide and oxides of the further metals;(c) a chlorination of the oxidation products obtained in method step (b) by using at least one chlorinating agent, the chlorination comprising the chlorination of the iron oxide and of the oxides of the further metals to give iron chloride and chlorides of the further metals;(d) removing of the iron chloride and of the chlorides of the further metals obtained in method step (c) from the product mixture obtained in method step (c);(e) removing of the noble metal(s) from the product mixture obtained in method step (d);wherein in method step (c) the chlorination is carried out as a solid phase reaction and wherein in method step (c) a recyclable chlorinating agent is used, wherein the recyclable ...

Подробнее
Номер записи: 61
31-03-2022 дата публикации

BIO-REDUCTION OF METAL ORES INTEGRATED WITH BIOMASS PYROLYSIS

Номер: US20220098701A1
Автор: DAUGAARD Daren, Mennell James A., Slack Dustin
Принадлежит:

Some variations provide a composition for reducing a metal ore, the composition comprising a carbon-metal ore particulate, wherein the carbon-metal ore particulate comprises at least about 0.1 wt % to at most about 50 wt % fixed carbon on a moisture-free and ash-free basis, and wherein the carbon is at least 50% renewable carbon as determined from a measurement of the C/C isotopic ratio. Some variations provide a process for reducing a metal ore, comprising: providing a biomass feedstock; pyrolyzing the feedstock to generate a biogenic reagent comprising carbon and a pyrolysis off-gas comprising hydrogen or carbon monoxide; obtaining a metal ore comprising a metal oxide; combining the carbon with the metal ore, to generate a carbon-metal ore particulate; optionally pelletizing the carbon-metal ore particulate; and utilizing the pyrolysis off-gas to chemically reduce the metal oxide to elemental metal, such as iron. The disclosed technologies are environmentally superior to conventional processes based on coal. 1. A process for producing carbon-metal ore pellets , the process comprising:providing a biomass feedstock;pyrolyzing the biomass feedstock, thereby generating a biogenic reagent, wherein the biogenic reagent comprises carbon;obtaining a metal ore, wherein the metal ore comprises a metal oxide, wherein the metal ore is in particulate form;combining the carbon with the metal ore, thereby generating a carbon-metal ore particulate; andpelletizing the carbon-metal ore particulate, thereby generating a carbon-metal ore pellet;wherein the biogenic reagent comprises at least 50 wt % fixed carbon; andwherein the carbon-metal ore particulate comprises at least about 0.1 wt % to at most about 50 wt % total carbon.2. The process of claim 1 , wherein the biogenic reagent comprises at least 75 wt % fixed carbon.3. The process of claim 1 , wherein the metal ore is selected from iron ore claim 1 , copper ore claim 1 , nickel ore claim 1 , magnesium ore claim 1 , manganese ...

Подробнее
Номер записи: 62
25-03-2021 дата публикации

GRANULATED MATERIAL, METHOD FOR PRODUCING GRANULATED MATERIAL, AND METHOD FOR PRODUCING SINTERED ORE

Номер: US20210087652A1
Автор: Hayasaka Yasukazu, JINNO Tetsuya, KOBAYASHI Naoto, KUROIWA Masato, ODA Kazuki, Takehara Kenta, Yamamoto Tetsuya
Принадлежит: JFE STEEL CORPORATION

A granulated material is provided which enables a reduction in the amount of adhesion of the granulated material to a conveyor junction. 1. A granulated material comprising:sludge in an amount of greater than 30 mass % and 90 mass % or less; andsintered ore powder in an amount of 10 mass % or greater and less than 70 mass %,the granulated material including granulated particles in which at least a portion of the sludge adheres to at least a portion of the sintered ore powder.2. The granulated material according to claim 1 , wherein the granulated particles further include dust.3. The granulated material according to claim 1 , wherein the sludge has a moisture content of 20 mass % or greater and less than 30 mass %.4. The granulated material according to claim 2 , wherein the sludge has a moisture content of 20 mass % or greater and less than 30 mass %.5. A method for producing a granulated material claim 2 , the method comprising:a dewatering step of dewatering sludge into a dewatered cake; anda granulation step of mixing and granulating the dewatered cake and sintered ore powder together.6. The method for producing a granulated material according to claim 5 , wherein claim 5 , in the granulation step claim 5 , dust is additionally mixed.7. The method for producing a granulated material according to claim 5 , wherein the dewatered cake has a moisture content of 20 mass % or greater and less than 30 mass %.8. The method for producing a granulated material according to claim 6 , wherein the dewatered cake has a moisture content of 20 mass % or greater and less than 30 mass %.9. A method for producing sintered ore claim 6 , the method comprising:{'claim-ref': {'@idref': 'CLM-00005', 'claim 5'}, 'a combining step of combining a granulated material produced by using the method for producing a granulated material according to , an iron-containing raw material, a CaO-containing raw material, and solid fuel to form a sinter feed material;'}a granulation step of adding water ...

Подробнее
Номер записи: 63
14-04-2016 дата публикации

Method and plant for producing iron from roasted pyrites

Номер: US20160102375A1
Автор: Alexander DYACHENKO, Bertram Böhringer, Raik SCHÖNFELD, Valeriy LARIN
Принадлежит: Bluecher GmbH

The invention relates to a method and a recovery system for obtaining/recovering metallic iron and/or iron compounds, in particular iron chloride, from ores and/or ore tailings, especially from pyrite tailings, preferably from roasted pyrites produced during sulphuric acid manufacture.

Подробнее
Номер записи: 64
02-06-2022 дата публикации

LITHIUM EXTRACTION PROCESS AND APPARATUS

Номер: US20220170134A1
Автор: Patwardhan Amit, Shinde Sandip, SUASNABAR Daniel, Wattenbarger Allen
Принадлежит:

A method of extracting lithium from a lithium-bearing material including: 1. A method of extracting lithium from a lithium-bearing material including:(i) mixing the lithium-bearing material, gypsum, a sulfur-containing material, and a calcium-containing material and forming a feed mixture having a moisture content of at least 20 wt %;(ii) drying the feed mixture to form a dried mixture having a moisture content of less than 20 wt %;(iii) roasting the dried mixture and forming a roasted mixture including a water-soluble lithium compound; and(iv) leaching lithium from the water-soluble lithium compound and forming a lithium-containing leachate by mixing the aqueous solution and the water-soluble lithium compound.2. A method of extracting lithium from a lithium-bearing material including:(i) mixing the lithium-bearing material, gypsum, a sulfur-containing material, and a calcium-containing material and forming a feed mixture having a moisture content of at least 20 wt %;(ii) drying the feed mixture to form a dried mixture having a moisture content of less than 20 wt %;(iii)supplying the dried mixture to a roaster;(iv) roasting the dried mixture in the roaster and forming a roasted mixture including a water-soluble lithium compound;(v) supplying the water-soluble lithium compound to a leach tank;(vi) supplying an aqueous solution to the leach tank; and(vii)leaching lithium from the water-soluble lithium compound and forming a lithium-containing leachate by mixing the aqueous solution and the water-soluble lithium compound in the leach tank.3. The method according to claim 1 , wherein the sulfur-containing material is either or a combination of an alkali metal sulfate and elemental sulfur.4. The method according to claim 3 , wherein the alkali metal sulfate is either or a combination of sodium sulfate and potassium sulfate.5. The method according to claim 1 , wherein the calcium-containing material is either or a combination of calcium carbonate and lime.6. The method ...

Подробнее
Номер записи: 65
18-04-2019 дата публикации

OXYGEN INJECTION IN FLUID BED ORE CONCENTRATE ROASTING

Номер: US20190112687A1
Автор: Abdelwahab Ahmed F, BourdeaudHuy Dany, Coessens Wim, Mahoney William J, Mocsari Jeffrey C, Turgut Ozhan
Принадлежит:

Oxygen is injected into the windbox of a fluidized bed ore roaster to form a fluidizing and oxidizing gas stream of elevated oxygen content which is fed into only the feed zone into which the ore to be fluidized is fed. 1. A method of roasting metal-sulfidic material , comprising(A) feeding solid particulate metal-sulfidic material into a roaster having a distribution plate that supports solid particulate material fed into the roaster, wherein the material is fed into a feed zone above the distribution plate that comprises less than the entirety of the upper surface of the distribution plate, wherein the roaster includes space below the distribution plate, and wherein passages are present through the distribution plate which have inlets are open to the space and have outlets in the upper surface of the distribution plate that are in the feed zone, and wherein passages are present through the distribution plate which have inlets that are open to the space and have outlets in the upper surface of the distribution plate that are not in the feed zone;(B) feeding oxygen-containing gas into space that is under the distribution plate;(C) injecting oxygen enrichment gas whose oxygen concentration is higher than the oxygen concentration of the oxygen-containing gas into a region of said space that is under said feed zone and mixing said enrichment gas with oxygen-containing gas in said region to form oxygen-enriched oxidant gas in said region; and(D) feeding said oxygen-enriched oxidant gas from said space through passages in said distribution plate under and into the metal-sulfidic material in the feed zone while feeding said oxygen-containing gas from said space through passages in said distribution plate that are not under the feed zone.2. A method according to wherein the space under the distribution plate is free of barriers that prevent oxygen-containing gas that is fed into said space from being accessible to the inlets of all of said passages through the distribution ...

Подробнее
Номер записи: 66
13-05-2021 дата публикации

PROCESS FOR THE RECOVERY OF RARE EARTHS

Номер: US20210140012A1
Автор: Elliot Alexander Dean
Принадлежит:

A method for the precipitation of rare earth sulphate, the method including subjecting a crude rare earth sulphate solution to precipitation in the presence of a water soluble, volatile, organic compound to produce a rare earth sulphate precipitate and an acidic supernatant. The organic compound is preferably selected from the group consisting of methanol, ethanol, iso-propanol, tert-butanol, acetone or mixtures thereof, and is preferably methanol. Preferably, the organic compound is used in the precipitation at a weight ratio of between 0.25:1 to 1.5:1, and preferably 0.5:to 1.25:1, with the crude sulphate solution. 1. A method for the precipitation of rare earth sulphate , the method including subjecting a crude rare earth sulphate solution to precipitation in the presence of a water soluble , volatile , organic compound to produce a rare earth sulphate precipitate and an acidic supernatant.2. The precipitation method of claim 1 , wherein the water soluble claim 1 , volatile claim 1 , organic compound is selected from the group consisting of methanol claim 1 , ethanol claim 1 , iso-propanol claim 1 , tert-butanol claim 1 , acetone or mixtures thereof.3. The precipitation method of claim 2 , wherein the water soluble claim 2 , volatile claim 2 , organic compound is methanol.4. The precipitation method of claim 3 , wherein methanol is used in precipitation at a weight ratio of between 0.25:1 and 1.5:1 with the sulphate solution.5. The precipitation method of claim 1 , wherein prior to precipitation the sulphate solution has a free sulphuric acid concentration above 5% w/w.6. The precipitation method of claim 1 , wherein precipitation occurs at a temperature in the range of 30 to 85° C. with a residence time in the range of 5 to 120 minutes.7. The precipitation method of claim 1 , wherein the organic compound is recovered from the acidic supernatant by distillation resulting in recovered organic compound and a dilute mixed acid solution claim 1 , with the recovered ...

Подробнее
Номер записи: 67
05-05-2016 дата публикации

SUSTAINABLE PROCESS FOR RECLAIMING PRECIOUS METALS AND BASE METALS FROM E-WASTE

Номер: US20160122846A1
Автор: Gnanamgari Dinakar, Ingalls Laura, Jiang Ping, KORZENSKI Michael B., Mendum Ted, Norman James, Strickler Fred, WARNER JOHN
Принадлежит:

Processes for recycling electronic components removed from printed wire boards, whereby precious metals and base metals are extracted from the electronic components using environmentally friendly compositions. At least gold, silver and copper ions can be extracted from the electronic components and reduced to their respective metals using the processes and compositions described herein. 130.-. (canceled)31. A method of removing more than one metal from e-waste , said method comprising:(a) contacting the e-waste with a first metal digestion composition to form a first extraction liquid and a first extraction solid, wherein the first metal digestion composition comprises at least one oxidizing agent and at least one complexing agent;(b) separating the first extraction solid from the first extraction liquid;(c) contacting the first extraction solid with a second metal digestion composition to form a second extraction liquid and a second extraction solid, wherein the second metal digestion composition comprises at least one oxidizing agent and at least one complexing agent;(d) separating the second extraction solid from the second extraction liquid, wherein the second extraction liquid comprises first metal ions; and(e) contacting the first extraction liquid with an additive to separate second metal ions from third metal ions,{'sub': 2', '2', '3', '5', '4', '2', '4', '4', '2', '4', '3', '4', '3', '4', '3', '4', '4', '4', '3', '4', '2', '2', '8', '4', '2', '2', '8', '3', '4', '3', '2', '2', '8', '3', '4', '2', '3', '4', '3', '3', '4', '3', '3', '4', '3', '3', '4', '4', '3', '4', '4', '3', '4', '2', '8', '3', '3', '2', '2', '2', '2', '3, 'wherein the at least one oxidizing agent comprises methanesulfonic acid (MSA), ethanesulfonic acid, benzenesulfonic acid, 2-hydroxyethanesulfonic acid, cyclohexylaminosulfonic acid, n-propanesulfonic acid, n-butanesulfonic acid, or n-octanesulfonic acid, hydrogen peroxide (HO), FeCl(both hydrated and unhydrated), oxone (2KHSO.KHSO.KSO), ...

Подробнее
Номер записи: 68
27-05-2021 дата публикации

Recovering valuable material from an ore

Номер: US20210154681A1
Автор: Luke Vollert
Принадлежит: Newcrest Mining Ltd

A method of recovering gold and copper from a sulfide ore includes (a) removing valuable fines from a product stream from a comminution circuit, such as a crushing and milling circuit, for run of mine ore and producing a valuable fines concentrate stream and (b) processing the remaining comminution product stream after valuable fines removal and producing a valuable coarse concentrate stream.

Подробнее
Номер записи: 69
16-04-2020 дата публикации

METHODS FOR TREATING LITHIUM-CONTAINING MATERIALS

Номер: US20200115807A1
Автор: BOUCHARD Pierre, BOURASSA Guy, CLAYTON Geneviève, Genders J. David, GLADKOVAS Mykolas, LAROCHE Nicolas, MACKIE Stephen Charles, Magnan Jean-Francois, PEARSE Gary, SYMONS Peter
Принадлежит: NEMASKA LITHIUM INC.

The present disclosure relates to a method for extracting lithium from a lithium-containing material. For example, the method can comprise leaching a roasted lithium-containing material under conditions suitable to obtain an aqueous composition comprising a lithium compound such as lithium sulfate and/or lithium bisulfate. The aqueous composition comprising lithium sulfate and/or lithium bisulfate can optionally be used, for example, in a method for preparing lithium hydroxide comprising an electromembrane process. The roasted lithium-containing material can be prepared, for example by a method which uses an aqueous composition comprising optionally lithium sulfate and/or lithium bisulfate which can be obtained from a method for preparing lithium hydroxide comprising an electromembrane process such as a two-compartment monopolar or bipolar electrolysis process. 1. A method for preparing lithium hydroxide , said method comprising:submitting a first aqueous composition comprising lithium sulfate to an electromembrane process under suitable conditions for at least partial conversion of said lithium sulfate into lithium hydroxide and to obtain a second aqueous composition comprising lithium sulfate; andoptionally increasing concentration of acid in said second aqueous composition; andusing said second aqueous composition comprising lithium sulfate for reacting with a lithium-containing material.2. The method of claim 1 , wherein said method further comprises recovering lithium sulfate from said second aqueous composition and reusing said lithium sulfate in said electromembrane process.3. The method of claim 1 , wherein said method further comprises at least partially recovering lithium sulfate from said second aqueous composition claim 1 , before using said second aqueous composition for reacting with said lithium-containing material claim 1 , and reusing said lithium sulfate in said electromembrane process.4. A method for preparing lithium hydroxide claim 1 , said ...

Подробнее
Номер записи: 70
21-05-2015 дата публикации

METHOD FOR THE EXTRACTION OF VANADIUMPENTOXIDE, V2O5, FROM A SOURCE CONTAINING VANADIUM

Номер: US20150139873A1
Автор: Scheller Piotr, Seetharaman Seshadri, Seetharaman Sridhar, Teng Lidong
Принадлежит:

The invention relates to a method for the extraction of vanadium from various sources in the form of vanadiumpentoxide, VO, from a source containing vanadium. The method includes the steps of: providing a source of VO, heating the source to a temperature of at least 1000° C., evaporating VOfrom the heated source and recovering the evaporated VO. 1. A method for the extraction of vanadium pentoxide , VO , from a source containing VO , the method comprises the steps of:providing a source containing vanadium,{'sub': 2', '5', '2', '5, 'if necessary, converting at least part of the vanadium in said source to VO, thereby providing a source of VO,'}{'sub': 2', '5, 'heating the source of VOto a temperature of at least 1000° C.,'}{'sub': 2', '5, 'evaporating VOfrom the heated source and'}{'sub': 2', '5, 'recovering the evaporated VO.'}215-. (canceled)16. The method according to claim 1 , wherein the vanadium containing source is selected from the group of: ore claim 1 , slag claim 1 , ash and vanadium-sulphide.17. The method according to claim 1 , wherein the vanadium containing source is from spent petroleum refining catalysts.18. The method according to claim 16 , wherein the ore is selected from the iron sands claim 16 , magnetite claim 16 , hematite claim 16 , titani-ferrous magnetite and vanadium-titanium magnetite; the slag is selected from converter slag claim 16 , submerged arc furnace slag claim 16 , ladle slag and slag obtained by selective oxidation of vanadium from raw iron; and the ash is selected from petroleum coke ash.19. The method according to claim 16 , wherein the ash is selected from fly ash and boiler ash.20. The method according to claim 1 , wherein the evaporation is carried out by the use of a gas.21. The method according to claim 1 , wherein the evaporation is carried out by the use of air or oxygen enriched air containing 22-99% oxygen.22. The method according to claim 1 , wherein the evaporation is carried out by the use of only oxygen.23. The ...

Подробнее
Номер записи: 71
01-09-2022 дата публикации

METHOD FOR THE TREATMENT OF ACCUMULATORS, BATTERIES AND THE LIKE

Номер: US20220275474A1
Автор: MÖDINGER Fritz, PALMITANO Marco, TIRLER Werner, VOTO Giulio
Принадлежит: Eco-Research

A method for processing accumulators, batteries and the like, which contain lithium, lithium ions, sodium, potassium and/or nickel as active components. According to the invention, the following steps are carried out; introducing an accumulator, a battery, cell or the like, that contains lithium, lithium ions, sodium, potassium and/or nickel, into a chamber/reactor (); introducing water (H2O) (B, B) in to the reactor (); bringing the content of the reactor () to a temperature between 120° C. and 370° C. at a pressure between 2 and 250 bar. 1. A method for the treatment of accumulators , batteries , cells , containing lithium , lithium ions , sodium , potassium and/or nickel as active components , consisting of the following steps:Insertion of an accumulator, battery, cell, containing lithium, lithium ions, sodium, potassium and/or nickel, into a reactor,Insertion of water into the reactor,Raising the contents of the reactor to a temperature between 120° C. and 370° C. with a pressure between 2 and 250 bar.2. The method according to claim 1 , wherein inert gas is also introduced into the reactor with the water.3. The method according to claim 1 , wherein the contents of the reactor are raised to a temperature of at least 200° C. and to a minimum pressure of 16 bar.4. The method according to claim 1 , wherein the contents of the reactor are raised to a temperature of a maximum of 250° C. and to a maximum pressure of 40 bar.5. The method according to claim 1 , wherein the ratio of water to the batteries/accumulators/cells to be treated is preferably 1/1 to 10/1 by weight. The invention relates to a method for treating accumulators, batteries and the like, which may contain lithium, lithium ions, sodium, potassium and/or nickel as active constituents, and to a system for carrying it out.Due to the increasing use of rechargeable batteries and accumulators, the problem of recycling and treatment of the same at the end of the life cycle and the recovery of the organic ...

Подробнее
Номер записи: 72
09-05-2019 дата публикации

METHODS OF RECYCLING ALUMINUM ALLOYS AND PURIFICATION THEREOF

Номер: US20190136342A1
Автор: Caron Francis, Yan Xinyan
Принадлежит:

The present disclosure relates to methods of producing purified aluminum alloys from aluminum alloy scrap by producing a melt of the aluminum alloy scrap, adding one or more intermetallic former materials, producing iron-bearing intermetallic particles, removing the iron-bearing intermetallic particles, and solidifying the low-iron melt. 1. A method comprising:(a) melting aluminum alloy scrap, thereby producing a melt, wherein the aluminum alloy scrap comprises an initial iron content, wherein the initial iron content is at least 0.20 wt. % iron (Fe);(b) adding intermetallic former materials to the melt, wherein the intermetallic former materials comprise silicon (Si), manganese (Mn), or both Si and Mn;(c) producing, due to the adding step (b), iron-bearing intermetallic particles in the melt;(d) removing at least some of the iron-bearing intermetallic particles from the melt, thereby producing a low-iron melt;(e) solidifying the low-iron melt, thereby producing a purified aluminum alloy from the low-iron melt, wherein the purified aluminum alloy includes a purified iron content, wherein the purified iron content is less than the initial iron content.2. The method of claim 1 , wherein the intermetallic former materials comprise silicon claim 1 , and wherein the adding step (b) comprises adding a sufficient amount of the silicon to produce the low-iron melt claim 1 , wherein the low-iron melt includes at least 3 wt. % Si.3. The method of claim 1 , wherein the purified aluminum alloy is one of a 3xx aluminum casting alloy or a 4xxx wrought aluminum alloy.4. The method of claim 1 , wherein the purified aluminum alloy comprises not greater than 0.35 wt. % iron (Fe).5. The method of claim 1 , wherein the purified aluminum alloy comprises not greater than 0.20 wt. % iron (Fe).6. The method of claim 1 , wherein the purified aluminum alloy comprises not greater than 0.15 wt. % iron (Fe).7. The method of claim 1 , wherein the intermetallic former materials comprise both ...

Подробнее
Номер записи: 73
26-05-2016 дата публикации

Method for Treating Aluminum Slags

Номер: US20160145716A1
Автор: Moritz Matthiasß
Принадлежит:

A method for treating aluminum slags in the form of dross or aluminum salt slags obtained in the preparation of aluminum, in which the aluminum slag in the melting process is brought with the exception of the surrounding atmosphere onto a cooling conveyor which is arranged in a housing provided with extraction facilities and whose first section adjoining the supply of the aluminum slag is flushed with an inert gas and whose second section serves for further cooling of the aluminum slag with introduction of air, wherein the lengths of the first section and the second section of the cooling conveyor are designed so that in the first section of the aluminum slag is cooled to a temperature at which the aluminum slag can no longer be chemically changed by exposure to atmospheric oxygen and in the second section, the slag is cooled to a temperature at which the cooled aluminum slag can be processed further to recover the aluminum in the aluminum slag after leaving the cooling conveyor. 112-. (canceled)13. A method for treating aluminum slag in the form of dross or aluminum salt slags obtained in the extraction of aluminum , comprising the following steps:placing the aluminum slag obtained in a melting process with exclusion of surrounding atmospheric air onto a cooling conveyor is arranged in a housing, wherein said housing is provided with exhaust devices, wherein said cooling conveyor has a first section adjoining the supply of aluminum slag and a second section;flushing said first section with an inert gas to cool said aluminum slag on said cooling conveyor;further cooling said aluminum slag on the second section by introduction of air, wherein the lengths of the first section and the second section of the cooling conveyor are configured so that in the first section, the aluminum slag is cooled to a temperature at which the aluminum slag can no longer be chemically changed by exposure to atmospheric oxygen and in the second section, the aluminum slag is cooled to a ...

Подробнее
Номер записи: 74
04-06-2015 дата публикации

Sulphur Dioxide Treatment

Номер: US20150151245A1
Автор: Peter Frank CROSS
Принадлежит: FRANK CROSS Ltd

A process for removing sulphur dioxide from the gaseous effluent of a smelter furnace comprising the steps of: providing the gaseous effluent from a smelter; separating the sulphur dioxide from the gaseous effluent to provide concentrated sulphur dioxide and effluent for discharge into the atmosphere; mixing the concentrated sulphur dioxide with a fuel gas; heating the mixture such that the concentrated sulphur dioxide and fuel gas react to form a gaseous product mixture comprising sulphur and hydrogen sulphide; and removing the majority of preferably substantially all of the sulphur and hydrogen sulphide from the gaseous product mixture; wherein the remaining gaseous product mixture is incinerated before being vented into the atmosphere or is recycled into the smelter furnace.

Подробнее
Номер записи: 75
08-09-2022 дата публикации

PROCESS AND ITS PRODUCTS FOR SPENT LITHIUM-ION BATTERIES TREATMENT

Номер: US20220285750A1
Автор: Li Jinhui, Liu Lili, YU Jiadong
Принадлежит: TSINGHUA UNIVERSITY

This invention discloses a process and its products for spent lithium-ion batteries treatment, which relates to the field of spent battery treatment technology. This process comprises: fully discharging spent lithium-ion batteries to obtain discharged spent lithium-ion batteries; crushing spent lithium-ion batteries to obtain crushed products of spent lithium-ion batteries; screening crushed products of spent lithium-ion batteries by screens to obtain an overflow and an underflow; sorting the overflow to obtain separator products, plastic products, iron products, copper foil products and aluminum foil products; mechanochemically activating the underflow to obtain activated products; acid leaching the activated products by degradable organic acid to obtain a mixture containing activated products and the organic acid leaching solution; filtering the mixture which contains the activated products and the organic acid leaching solution to obtain graphite as filter residues. Copper mud products and LiNiCoAlOcan be obtained after further treatments. This process can effectively recover recyclable resources in spent lithium-ion batteries, and reduce pollution of heavy metals. 1. A process of spent lithium-ion batteries treatment , wherein features comprise:fully discharging spent lithium-ion batteries to obtain discharged spent lithium-ion batteries;crushing said spent lithium-ion batteries to obtain said crushed products of spent lithium-ion batteries;screening said crushed products of spent lithium-ion batteries by screens to obtain an overflow and an underflow;sorting said overflow to obtain separator products, plastic products, iron products, copper foil products and aluminum foil products;mechanochemically activating said underflow to obtain activated products;acid leaching said activated products by degradable organic acid to obtain a mixture containing activated products and the organic acid leaching solution;filtering the mixture which contains the activated ...

Подробнее
Номер записи: 76
04-06-2015 дата публикации

Method of Recovering Silver and Paper from Silver-Coated Paper Film

Номер: US20150152520A1
Автор: Torrence Michael J.
Принадлежит:

A process for recovery of silver from silver-containing photographic emulsion-coated films, particularly films with paper or polymeric substrates. The process includes immersing photographic silver emulsion coated substrates, particularly paper, in a water-based solution of sodium hydroxide and sodium borohydride, with sufficient presence of an alkali metal hydroxide to maintain the solution at a pH of 11.0 to 12.0. Silver-containing emulsion layers are stripped from the substrate, while gelatin and other adhesive layers are dissolved. Silver present in a silver halide form is reduced to form metallic silver. The silver-laden emulsion is then treated using a polyamine coagulant and flocculant to induce precipitation of solids, particularly metallic silver, out of the solution. The exposure time of the paper to the wash bath is carefully controlled to permit recovery of the paper substrate. 1. A process to recover silver from silver-emulsion-coated substrates , comprising:immersing photographic silver-emulsion-coated substrates in a water-based wash solution of sodium hydroxide and sodium borohydride, with sufficient presence of an alkali metal hydroxide to maintain the solution at a pH of 11.0 to 12.0;reducing silver halide to form metallic silver;treating the emulsion using a polyamine coagulant and flocculent to induce precipitation of solids, particularly metallic silver, out of the solution;separating precipitates from water through gravitational clarification; andfiltering the precipitates and water using a filter press to produce highly enriched silver cake.2. The process of wherein the water-based solution of sodium hydroxide and sodium borohydride is at a temperature between 170 and 180 degrees Fahrenheit.3. The process of wherein the photographic silver-emulsion-coated substrates are immersed in the water-based solution of sodium hydroxide and sodium borohydride for approximately 10 minutes.4. The process of wherein the photographic silver-emulsion-coated ...

Подробнее
Номер записи: 77
10-06-2021 дата публикации

RECYCLING METHOD FOR TREATING USED BATTERIES, IN PARTICULAR RECHARGEABLE BATTERIES, AND BATTERY PROCESSING INSTALLATION

Номер: US20210175556A1
Автор: Hanisch Christian
Принадлежит:

The invention relates to a method for treating used lithium batteries () containing the steps: comminuting the batteries () such that comminuted material () is obtained, and (b) inactivating of the comminuted material () such that an inactive comminuted material () is obtained. According to the invention, the drying is conducted at a maximum pressure of 300 hPa and a maximum temperature of 80° C. and the deactivated comminuted material () is not filled into a transport container and/or said deactivated comminuted material is immediately further processed after the drying process. 18-. (canceled)9. A battery processing installation for the treatment of batteries , comprising:a comminution unit for comminuting the batteries such that comminuted material is obtained,(b) a deactivation device in the form of a drying device for deactivating the comminuted material, and(c) a vacuum installation that is connected to the drying device for generating a vacuum in the drying device,(d) wherein the drying device is configured to dry at or below a maximum temperature of 80° C.10. The battery processing installation according to claim 9 , wherein the comminution unit is arranged in the drying device.11. The battery processing installation according to claim 9 , further comprising:a condenser for condensing gaseous electrolytes which are sucked out of the drying device; anda particle separator is arranged between the drying device and the condenser and/or at least one pump which pumps in a direction of material flow.12. The battery processing installation according to claim 9 , further comprisinga gas-tight and or dust-tight conveyor which connects the comminution device and the drying device.13. The battery processing installation according to claim 9 , further comprising:an airlock arranged in front of the comminution unit for supplying the batteries, and/ora particle separator arranged between the drying device and the condenser in a direction of material flow.14. The battery ...

Подробнее
Номер записи: 78
16-05-2019 дата публикации

ROASTING FURNACE, USE THEREOF AND METHOD FOR THE PROCESSING OF ORES OR CONCENTRATES

Номер: US20190145707A1
Автор: EGGERMONT Tom, PROVOOST Guido
Принадлежит: SADACI NV

A roasting furnace for processing ores or concentrates, preferably molybdenum-containing ores or concentrates is described. The roasting furnace contains at least one first rotary lifting system for the displacement of said arm along the axis direction, wherein said first rotary lifting system is a telescopic lifting system, and/or wherein a distance x between two consecutive said stages of said roasting furnace are at least 1.000 m, wherein said distance x is measured along the axis direction. The roasting furnace of has an improved processing capacity and/or a reduction in the number of halts, and consequently is more energy-efficient, more environmentally-friendly and more economically interesting. 118-. (canceled)19. A roasting furnace for the processing ores or concentrates , comprising:a shaft;an upper part; anda lower part,wherein said upper part and said lower part are separated by a bottom floor,wherein said upper part contains an outer wall, at least one first type of hearth stage, at least one second type of hearth stage, and at least one arm,wherein said arm contains at least one tooth,wherein said arm is connected to said shaft,wherein said lower part contains a rotary mechanism and a bearing block,wherein said bearing block is located under said shaft,wherein at least one first rotary lifting system is contained in said roasting furnace for the displacement of said arm along the axis direction,wherein said first rotary lifting system is a telescopic lifting system, andwherein a distance x between two consecutive said stages is at least 1.000 m, wherein said distance x is measured along the axis direction.20. The roasting furnace according to claim 19 , wherein a first non-rotary lifting system is contained in said roasting furnace for the displacement of said arm along the axis direction claim 19 , wherein said first non-rotary lifting system is attached below said shaft.21. The roasting furnace according to claim 19 , wherein said first rotary lifting ...

Подробнее
Номер записи: 79
17-06-2021 дата публикации

Method to open up electro chemical energy storage devices and thermal treatment system

Номер: US20210184283A1
Автор: Albrecht Melber, Reiner Sojka
Принадлежит: Accurec Recycling GmbH

A method for breaking down electrochemical energy storage devices in conjunction with a subsequent reclamation of recyclable materials contained therein as secondary raw materials. The devices are broken down by a thermal treatment in a negative pressure environment in a process chamber to remove electrolyte and reactive substances, before the thermally treated material is subjected to downstream processing, by which the secondary raw materials are separated from one another. After introducing a batch of storage devices, in a first process step, the process chamber is evacuated with simultaneous heating of the devices to a first temperature level such that electrolytes in the devices evaporate and, due to the resulting vapor pressure, the devices are opened, wherein produced process gases containing electrolytes in the vapor phase are withdrawn from the process chamber. The devices are then heated to a second temperature level for further breakdown with a simultaneous pressure increase in the process chamber in a reducing atmosphere, before the chamber is ventilated and cooled and the broken down devices are removed, wherein the pressure increase is monitored during this second process step so that it increases continuously. Also, a thermal treatment system for removing electrolytes and reactive substances in electrochemical energy storage devices, thus for pyrolytically breaking them down.

Подробнее
Номер записи: 80
18-06-2015 дата публикации

Method for reducing hexavalent chromium in oxidic solids

Номер: US20150166411A1
Автор: Barry VISAGIE, Chris Labuschagne, Dawie Van der Merwe, Holger Friedrich, Rainer Ortmann
Принадлежит: LANXESS DEUTSCHLAND GMBH

Process for reducing hexavalent chromium in oxidic solids, which comprises the steps: a) mixing of the oxidic solid containing Cr(VI) with a carbon-containing compound which is liquid in the range from 20 to 100° C., b) treatment of the mixture obtained after a) in an indirectly heated reactor at a temperature of from 700° C. to 1100° C., particularly preferably at a temperature of from 800° C. to 1000° C., under a protective atmosphere, c) cooling of the reaction product obtained after b) to at least 300° C., preferably at least 150° C., under a protective atmosphere.

Подробнее
Номер записи: 81
16-06-2016 дата публикации

METHOD FOR MANUFACTURING AGGLOMERATE AND REDUCED IRON

Номер: US20160168654A1
Автор: Tanaka Hidetoshi, Tsuchiya Osamu
Принадлежит: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.

A process for producing an agglomerate comprising heat treating an iron oxide-containing powder at a heating temperature of 900 to 1,200° C., and granulating an obtained heat treated powder, as a raw material, thereby producing an agglomerate, wherein the iron-oxide-containing powder has a 50% particle diameter of 2 μm or less. 1. A process for producing an agglomerate , comprisingheat-treating an iron-oxide-containing powder having a 50% particle diameter of 2 μm or less at a heating temperature of 900 to 1,200° C., andgranulating an obtained heat-treated powder, as a raw material, thereby producing an agglomerate.2. The process according to claim 1 , wherein the granulation is conducted by a rolling granulation method.3. The process according to claim 1 , wherein the heat treatment is conducted so that the heat-treated powder has a 50% particle diameter of 4 μm or larger.4. The process according to claim 1 , wherein the heat treatment is conducted for a heating period of 30 minutes or longer.5. The process according to claim 1 , wherein the heat treatment is conducted while rolling the iron-oxide-containing powder.6. The process according to claim 1 , wherein the iron-oxide-containing powder is a tailing.7. The process according to claim 6 , wherein the tailing is a residue which has remained after Ni recovery from a Ni-containing ore.8. A process for producing a reduced iron claim 1 , wherein the agglomerate obtained by the process according to is heated claim 1 , thereby producing a reduced iron.9. The process according to claim 8 , wherein the agglomerate further contains a carbonaceous reducing agent.10. The process according to claim 2 , wherein the heat treatment is conducted so that the heat-treated powder has a 50% particle diameter of 4 μm or larger.11. The process according to claim 2 , wherein the heat treatment is conducted for a heating period of 30 minutes or longer.12. The process according to claim 2 , wherein the heat treatment is conducted while ...

Подробнее
Номер записи: 82
25-06-2015 дата публикации

PRODUCTION OF TITANIUM DIOXIDE PIGMENTS

Номер: US20150176103A1
Автор: FANG PENG, Fang Zhigang Zak, Middlemas Scott
Принадлежит:

A process includes roasting a TiO-containing material in the presence of an alkaline material to form a roasted product; leaching the roasted product with an acidic solution to form a leach liquor; extracting the leach liquor with an extractant to form a raffinate including a Ti species; hydrolyzing the Ti species to form a hydrolyzed material that includes HTiO; calcining the hydrolyzed material; and recovering a TiOproduct. 1. A process comprising:{'sub': '2', 'roasting a TiO-containing material in the presence of an alkaline material to form a roasted product;'}leaching the roasted product with an acidic solution to form a leach liquor;{'sup': '4+', 'extracting the leach liquor with an extractant to form a raffinate comprising Ti,'}{'sup': '4+', 'sub': 2', '3, 'hydrolyzing the Ti to form a hydrolyzed material comprising HTiO;'}calcining the hydrolyzed material; and{'sub': '2', 'recovering a TiOproduct.'}2. The process of claim 1 , wherein the extractant comprises an alkyl phosphoric acid claim 1 , an alkyl phosphonic acid claim 1 , an alkyl phosphinic acid claim 1 , a thioalkyl phosphinic acid claim 1 , a phosphate claim 1 , a phosphine oxide claim 1 , a primary amine claim 1 , a second amine claim 1 , a tertiary amine claim 1 , a quaternary ammonium salt claim 1 , or an ion exchange resin.3. The process of claim 1 , wherein the extractant comprises di(2-ethylhexyl)phosphoric acid; 2-ethylhexyl phosphonic acid mono-2-ethylhexyl phosphoric ester; di-2 claim 1 ,4 claim 1 ,4-trimethylpentyl phosphinic acid; di-2 claim 1 ,4 claim 1 ,4-trimethylpentyl monothiophosphinic acid; di-2 claim 1 ,4 claim 1 ,4-trimethylpentyl dithiophosphinic acid; a phosphate of formula (O)P(OR); a phosphine oxide of formula (O)PRor (O)PRR; trioctyl amine; or trioctyl methyl ammonium chloride; quarternary amine; wherein R claim 1 , R claim 1 , R claim 1 , and Rare individually C4-C10 alkyl.4. The process of claim 1 , wherein the extractant comprises a tertiary amine which is a trialkylamine ...

Подробнее
Номер записи: 83
21-05-2020 дата публикации

Facility for longitudinal sealing up wind boxes in travelling grate facilities

Номер: US20200158435A1
Автор: Basavan Goud SALAGUNDI, Maycon ATHAYDE
Принадлежит: Individual

A device for thermal treatment of bulk material, includes a travelling grate chain revolving in the direction of movement including an endless travelling grate with movable links. The travelling grate chain features a plurality of pallet cars, and grate rods arranged on crossbars. Further, wind boxes are arranged such that gas flows through the pallet cars and their grate rods from or into the wind boxes. At each pallet car at least one sealing blade is mounted in parallel to the moving direction and flush with the pallet car, whereby a sealing box is in parallel to the moving direction. A liquid medium is filled into at least one sealing box, such that the sealing blade is immersed in the liquid.

Подробнее
Номер записи: 84
18-09-2014 дата публикации

SORTING MINED MATERIAL

Номер: US20140260801A1
Автор: Box John Clarence, Wellwood Grant Ashley
Принадлежит: TECHNOLOGICAL RESOURCES PTY. LIMITED

A method for sorting mined material in a sorting apparatus is disclosed. The method includes supplying particles of a mined material onto a conveyor belt (), transporting the particles on the conveyor belt past a detection assembly () and assessing the particles, and separating the particles based on the assessment into an accepts stream and a rejects stream at a discharge end of the belt using a separator assembly (). The method also includes controlling the arrangement of particles so that there is an ordered arrangement of particles on the belt to optimise the throughput of particles through the sorting apparatus. 1. A method for sorting mined material in a sorting apparatus including a particle feed assembly , a detection assembly , a separation assembly , and a conveyor belt for carrying particles from the feed assembly past the detection assembly to the separation assembly , the method including supplying particles of a mined material onto the conveyor belt , transporting the particles on the conveyor belt past the detection assembly and assessing the particles , and separating the particles based on the assessment into an accepts stream and a rejects stream at a discharge end of the belt using the separator assembly , and the method including controlling the arrangement of particles so that there is an ordered arrangement of particles on the belt to optimise the throughput of particles through the sorting apparatus.2. The method defined in including the steps of:(a) controlling the arrangement of particles of mined material so that there is an ordered arrangement of particles on the belt to optimise the throughput of particles through the sorting apparatus,(b) exposing particles to electromagnetic radiation,(c) detecting and assessing particles on the basis of composition or texture or another characteristic of the particles, and(d) physically separating particles based on the assessment in step (c).3. The method defined in including controlling the ...

Подробнее
Номер записи: 85
18-09-2014 дата публикации

PROCESSING MINED MATERIAL

Номер: US20140260802A1
Автор: Dimitrakis Georgios, Dodds Christopher, Kingman Samuel, Wellwood Grant Ashley
Принадлежит: TECHNOLOGICAL RESOURCES PTY. LIMITED

An apparatus for processing mined material, such as mined ore, is disclosed. The apparatus includes an applicator () for exposing a downwardly moving bed of fragments of a material to electromagnetic radiation. The applicator includes a tube () for containing the moving bed of fragments that has an upper inlet and a lower outlet and a transverse cross-sectional area that increases between the inlet and the outlet. 12-. (canceled)3. The apparatus defined in wherein the extent of the change in cross-sectional area of the applicator tube is up to 5% between the inlet and the outlet.4. The apparatus defined in wherein the extent of the change in cross-sectional area is up to 10% between the inlet and the outlet.5. The apparatus defined in wherein the extent of the change in cross-sectional area of the applicator tube is at least 2% between the inlet and the outlet.6. The apparatus defined in wherein the cross-sectional area of the applicator tube increases continuously along the length of the tube between the inlet and the outlet end of the tube.7. The apparatus defined in wherein the applicator tube diverges or flares outwardly along the length of the tube between the inlet and the outlet.8. The apparatus defined in wherein the applicator tube has walls that are straight when viewed in vertical cross-section.9. The apparatus defined in wherein the applicator tube has walls that are curved when viewed in vertical cross-section.10. The apparatus defined in wherein the applicator tube includes successive sections along the length of the tube between the inlet and the outlet claim 23 , with each section having a range of cross-sectional areas that increase from an upper end to a lower end of the section claim 23 , and each section defining a separate zone for exposing fragments in the zone to electromagnetic radiation.11. The apparatus defined in includes an electromagnetic radiation source for each zone claim 10 , with each electromagnetic radiation source being adapted ...

Подробнее
Номер записи: 86
29-06-2017 дата публикации

ARC FURNACE SMELTERING SYSTEM & METHOD

Номер: US20170183759A1
Автор: Cunningham Stephen L., Stuart Martin A.
Принадлежит:

An industrial scale smelting system for using arc furnaces for processing large quantities of ore in a production manner for recovery of a plurality of elements in useful quantities using a plurality of electrowinning processes with the options of providing efficient energy recovery and raw material recovery and recirculation capabilities. 1. A smelting system comprising:a source of at least one feed chemical;a source of ore comprising a plurality of different elements and/or comprising a plurality of different naturally occurring element compounds;at least one furnace for receiving the feed chemical and the ore, wherein said furnace is configured to provide heat for converting the plurality of different elements and/or the plurality of naturally occurring element compounds in the received ore into a corresponding plurality of different chemical compounds based on the feed chemical for output by the furnace; anda plurality of electrowinning subsystems provided in series, whereinsaid output of the furnace is fed to said plurality of electrowinning subsystems in sequence, such that each one of said electrowinning subsystems operates on a different subset of the different chemical compounds output by the furnace to extract the corresponding elements from the respective subset of chemical compounds thereby releasing the feed chemical or a compound thereof for recirculation in the smelting system, and whereineach one of the extracted elements is collected and output by the respective one of the electrowinning subsystems as a product of the smelting system.2. A smelting system comprising:a source of a feed chemical;a source of ore comprising a plurality of different elements and/or comprising a plurality of different naturally occurring element compounds;at least one furnace for receiving the feed chemical and the ore, wherein said furnace is configured to provide heat for converting the plurality of different elements and/or the plurality of naturally occurring element ...

Подробнее
Номер записи: 87
04-06-2020 дата публикации

Treatment device and method for removing coatings

Номер: US20200172992A1
Автор: Andreas Reindl, Frank Michael Keppeler, Frank Sälzle
Принадлежит: Wieland Werke AG

The invention relates to a treatment device and a method for removing coatings, comprising a vibratory conveyor with a conveying channel, which is designed in the manner of a trough, in order to form a treatment bath with a liquid decoating medium, comprising an inlet end and an outlet end for bulk material, wherein the conveying direction of the conveying channel runs from the inlet end to the outlet end. The conveying channel has below the surface of the treatment bath at least one feeding device and at least one discharging device for the decoating medium.

Подробнее
Номер записи: 88
15-07-2021 дата публикации

METHODS AND COMPOSITIONS FOR PRE-EXTRACTIVE BENEFICIATION OF ORES

Номер: US20210214819A1
Автор: Davis Ronald Verne, Greulich Christopher Ryan, LaRosa Michael Ignazio
Принадлежит:

Disclosed herein are methods and compositions for increasing the alumina content of a bauxite ore prior to alumina extraction by an extractive process, such as the Bayer process. By adding a beneficiation agent to an aqueous ore slurry, then applying a gravitational force to separate, or partition, the slurry into a beneficiary and a gangue, a number of quantifiable benefits are observed. These include increased alumina content and reduced silica content in the beneficiary solids as compared to the starting ore. These benefits are in excess of those observed by pre-extraction gravitational separation of ore slurries without the addition of a beneficiation agent. Beneficiation agents include DADMAC polymers, and combinations of DADMAC polymers with dextrans. The beneficiary is collected and applied to an extractive process, such as the Bayer process. 1. A method of ore beneficiation , the method comprising: combining an ore source comprising a mineral product , a water source , and a first beneficiation agent to form a first beneficiation slurry; and partitioning the slurry to form a first beneficiary and a first gangue , wherein the first beneficiation agent comprises a cationic polymer , a polysaccharide , or a combination thereof.2. The method of wherein the ore source is a comminuted ore source or a classified ore source.3. The method of wherein the mineral product comprises gold claim 1 , silver claim 1 , copper claim 1 , iron claim 1 , phosphate claim 1 , or coal.4. The method of further comprising collecting the beneficiary and extracting a mineral product therefrom.5. The method of claim 4 , further comprising flocculating the first beneficiary claim 4 , dewatering the first beneficiary claim 4 , or both after the collecting.6. The method of wherein the first beneficiary comprises about 1 wt % to 99 wt % more total mineral product than a beneficiary obtained in the absence of the beneficiation agent.7. The method of wherein the first beneficiary comprises ...

Подробнее
Номер записи: 89
07-07-2016 дата публикации

PRODUCING A TITANIUM PRODUCT

Номер: US20160194733A1
Автор: Fan Peng, Fang Zhigang Zak, Free Micheal, Guo Jun, Middlemas Scott, Sathyapalan Amarchand, Xia Yang, ZHANG YING
Принадлежит:

A method () for producing a titanium product is disclosed. The method () can include obtaining TiO-slag (), and producing a titanium product from the TiO-slag using a metallic reducing agent () at a moderate temperature and a pressure to directly produce a titanium product chemically separated from metal impurities in the TiOslag (). The titanium product can comprise TiHand optionally elemental titanium. Impurities in the titanium product can then removed () by leaching, purifying and separation to form a purified titanium product. 1. A method for producing a titanium product , comprising:{'sub': '2', 'obtaining TiO-slag;'}{'sub': 2', '2', '2, 'producing the titanium product from the TiO-slag using a metallic reducing agent at a moderate temperature under a hydrogen atmosphere at a pressure to directly produce the titanium product chemically separated from metal impurities in the TiO-slag, wherein the titanium product comprises TiHand optionally elemental titanium; and'}removing the metal impurities from the titanium product to form a purified titanium product.2. The method of claim 1 , wherein the step of producing the titanium product includes reducing the TiO-slag directly with the metallic reducing agent.3. The method of claim 1 , wherein the step of producing includes pre-treating the TiO-slag to produce intermediate products including at least one of water-washed derivatives of sodium titanate claim 1 , metatitanic acid claim 1 , and substantially pure titanium dioxide and then reducing the intermediate products using the metallic reducing agent.4. The method of claim 3 , further comprising deoxygenating the titanium product at a higher temperature above the moderate temperature and under hydrogen atmosphere using a second reducing agent which is stronger than the metallic reducing agent to produce a particulate titanium product claim 3 , coarsening the particulate titanium product to a target particle size range claim 3 , and cooling the particulate titanium ...

Подробнее
Номер записи: 90
18-06-2020 дата публикации

METHOD FOR DECOMPOSING MEDIUM-/LOW-GRADE SCHEELITE

Номер: US20200190627A1
Автор: Huang Xing, Liu Peng, WAN Linsheng, WANG Hailong, WANG Shuilong, XUE Xiang, Yang Liang
Принадлежит:

The present invention discloses a method for decomposing medium-/low-grade scheelite, specifically comprising steps of: grinding medium-/low-grade scheelite, decomposing in an autoclave by using sodium phosphate and activated magnesium fluoride as leaching agents, and treating by solid-liquid separation to obtain crude sodium tungstate solution and residue. In this way, the medium-/low-grade scheelite is decomposed. Magnesium chloride is added in a sodium fluoride solution to prepare activated magnesium fluoride as a leaching agent. The present invention has the advantage that the high-efficiency decomposition of medium-/low-grade scheelite can be realized with low consumption of leaching agents, and the leaching cost can be greatly reduced in comparison to the existing decomposition processes using sodium hydroxide and sodium carbonate. This process is short in route, simple in operation, readily available and reliable in production equipment, and easy for industrialization. 1. A method for decomposing medium-/low-grade scheelite , comprising steps of:step 1: grinding medium-/low-grade scheelite to below 325 meshes;step 2: preparing activated magnesium fluoride: adding magnesium chloride in an amount that is 1.1 to 1.3 times of the theoretical amount required to decompose scheelite in a sodium fluoride solution having a concentration of 30 to 40 g/L, and reacting at60° C. to 80° C. to generate activated magnesium fluoride; andstep 3: adding the grinded medium-/low-grade scheelite in an autoclave, adding sodium phosphate, activated magnesium fluoride and water for hydrolysis, and treating by solid-liquid separation to obtain crude sodium tungstate leachate and residue containing calcium and magnesium.2. The method according to claim 1 , wherein the content of WOin the medium-/low-grade scheelite is 18 to 42 wt. %.3. The method according to claim 1 , wherein claim 1 , in the step (2) claim 1 , the reaction time is 30 to 60 min claim 1 , and the stirring speed is 200 ...

Подробнее
Номер записи: 91
28-07-2016 дата публикации

SYSTEMS AND METHODS FOR RECYCLING ELECTRONIC SYSTEMS

Номер: US20160219763A1
Автор: Sheen Calvin Wade, Tischler Michael A.
Принадлежит:

In accordance with certain embodiments, devices are recycled by removing one or more electronic components from a portion of the device and urging one or more regions of the portion of the device toward an abrasion head. The abrasion head mechanically removes at least a portion of patternable material in each of the one or more regions. The steps are repeated for subsequent portions of the device. 1. A method of recycling a device comprising a plurality of electronic components disposed over a composite material , the composite material comprising a substrate and a patternable material disposed thereover , wherein the patternable material is patterned to form a pattern therein , the method comprising:receiving a portion of the device;removing one or more electronic components from the received portion of the device;urging one or more regions of the received portion of the device toward an abrasion head, whereby the abrasion head mechanically removes at least a portion of the patternable material in each of the one or more regions; andrepeating the above steps for one or more portions of the device.2. The method of claim 1 , wherein removing the one or more electronic components from the received portion of the device comprises mechanical scraping.3. The method of claim 1 , wherein one or more regions of the received portion of the device are urged toward the abrasion head by one or more actuators claim 1 , the received portion of the device being disposed between the abrasion head and the one or more actuators.4. The method of claim 1 , further comprising storing the one or more removed electronic components after removal thereof.5. The method of claim 1 , further comprising storing the removed at least a portion of the patternable material after removal thereof.6. The method of claim 1 , wherein the portion of the device is received from a supply reel.7. The method of claim 6 , further comprising claim 6 , after urging the one or more regions of the received ...

Подробнее
Номер записи: 92
02-08-2018 дата публикации

PROCESS AND APPARATUS FOR PRODUCING URANIUM OR A RARE EARTH ELEMENT

Номер: US20180216209A1
Автор: CHARITOS Alexandros, GÜNTNER Jochen, HAMMERSCHMIDT JÖRG, WROBEL Maciej
Принадлежит: OUTOTEC (FINLAND) OY

The above mentioned invention describes a process for producing uranium and/or at least one rare earth element selected from the group consisting of cerium, dysprosium, erbium, europium, gadolinium, holmium, lanthanum, lutetium, neodymium, praseodymium, promethium, samarium, scandium, terbium, thulium, ytterbium and yttrium out of an ore. The ore is mixed with sulphuric acid with an concentration of at least 95 wt.-% to a mixture, wherein the mixture is granulated to pellets. The pellets are fed into at least one fluidized bed fluidized by a fluidizing gas for a thermal treatment at temperatures between 200 and 1000° C. The at least one fluidized bed is developed such that it at least partly surrounds a gas supply tube for a gas or a gas mixture fed into the reactor and the gas or gas mixture is used as a heat transfer medium. 1. Process for producing uranium (U) and/or at least one rare earth element selected from the group consisting of cerium (Ce) , dysprosium (Dy) , erbium (Er) , europium (Eu) , gadolinium (Gd) , holmium (Ho) , lanthanum (La) , lutetium (Lu) , neodymium (Nd) , praseodymium (Pr) , promethium (Pm) , samarium (Sm) , scandium (Sc) , terbium (Tb) , thulium (Tm) , ytterbium (Yb) and yttrium (Y) out of an ore ,wherein the ore is mixed with sulphuric acid with an concentration of at least 95 wt.-% to a mixture,wherein the mixture is granulated to pellets,wherein the pellets are fed into at least one fluidized bed fluidized by a fluidizing gas for a thermal treatment at temperatures between 200 and 1000° C.,wherein the at least one fluidized bed is developed such that it at least partly surrounds a gas supply tube for a gas or a gas mixture fed into the reactor, andwherein the gas or gas mixture is used as a heat transfer medium.2. Process according to claim 1 , wherein the gas or gas mixture is an off-gas of a downstream process stage.3. Process according to claim 1 , wherein the pellets have an average diameter between 100 and 500 μm and/or 10 wt.-% of ...

Подробнее
Номер записи: 93
12-08-2021 дата публикации

DEVICE FOR CHLORINATING TITANIUM-CONTAINING MATERIAL IN A SOLUTION OF CHLORIDE SALTS

Номер: US20210245131A1
Автор: CHUVASHOV Vyacheslav Yurievich, SARSEMBEKOV Turar Kusmanovich
Принадлежит:

The invention relates to non-ferrous metallurgy and concerns a device for chlorinating titanium-containing material in a solution of chloride salts. The technical effect of the invention is an increase in the service life of the device and a reduction in raw material losses. This technical effect is achieved by means of the proposed device for chlorinating titanium-containing material in a solution of chloride salts, comprising a housing, a lined upper cylindrical chamber for a gas-vapour mixture, a lined chlorinating chamber in the shape of an inverted truncated cone, the generatrix of which is inclined at an angle of 15-25° to the axis of the chamber, graphite electrodes, a hearth, tuyeres, chlorine feed lines, and a feedstock charging assembly, wherein the housing is provided with reinforcing ribs in the region of the chlorinating chamber and of an upper drainage pocket. 1. A device for chlorinating a titanium-containing raw material in a chloride-salt melt, comprising a housing, a lined upper cylindrical gas-vapor mixture chamber, a lined chlorination chamber configured as an inverted truncated cone having a generatrix inclined at an angle of 15°-25° to a chamber axis, graphite electrodes, a hearth, tuyeres, chloride feed lines, and a charge loading assembly arranged directly on the chlorination chamber, wherein a ratio between a diameter of the hearth, a diameter of the gas-vapor mixture chamber and a height of the chlorination chamber is 1:(1.2-1.5):(3.5-4.5), and wherein the housing is provided with reinforcing ribs in the region of the chlorination chamber and of an upper drainage pocket, the upper drainage pocket is lined with a graphite plate, and the tuyeres are provided with a compressed air feeding assembly comprising hoses with a metal double tube. The invention relates to non-ferrous metallurgy and concerns a device for chlorinating a titanium-containing raw material in a chloride-salt melt.RU 2165567 discloses a device for chlorinating a titanium- ...

Подробнее
Номер записи: 94
11-08-2016 дата публикации

SYSTEMS AND METHODS FOR METAL RECOVERY

Номер: US20160230296A1
Автор: Baughman David R., Bolles Thomas R., Hazen Wayne W., May Lawrence D., Robertson Joanna M., Smith Jay C.
Принадлежит: Freeport Minerals Corporation

Various embodiments provide a process roasting a metal bearing material under oxidizing conditions to produce an oxidized metal bearing material, roasting the oxidized metal bearing material under reducing conditions to produce a roasted metal bearing material, and leaching the roasted metal bearing material in a basic medium to yield a pregnant leach solution. 1. (canceled)2. A process comprising:roasting a metal bearing material comprising a copper carbonate under oxidizing conditions;roasting the metal bearing material under reducing conditions, at a temperature of about 475° C. or greater; andleaching the metal bearing material in a basic medium to yield a pregnant leach solution.3. The process of claim 2 , wherein the basic medium comprises at least one of ammonia claim 2 , ammonium carbonate and ammonium sulfate.4. The process of claim 2 , wherein the oxidizing conditions comprise an oxygen gas containing atmosphere.5. The process of claim 2 , wherein the reducing conditions comprise a hydrogen gas containing atmosphere.6. The process of claim 2 , further comprising subjecting the pregnant leach solution to a solution extraction process to yield a loaded aqueous stream.7. The process of claim 6 , wherein an extraction stage of the solution extraction yields a cobalt-bearing raffinate.8. The process of claim 7 , further comprising precipitating cobalt from the cobalt-bearing raffinate.9. The process of claim 8 , wherein the precipitating yields cobalt sulfide.10. The process of claim 9 , wherein the cobalt sulfide is subjected to leaching.11. The process of claim 6 , subjecting the loaded aqueous stream to electrowinning.12. The process of claim 2 , wherein the copper carbonate comprises at least one of azurite and malachite.13. A process comprising:oxidizing a metal bearing material comprising a copper carbonate to produce an oxidized metal bearing material;reducing the oxidized metal bearing material at a temperature of about 475° C. or greater to produce a ...

Подробнее
Номер записи: 95
30-10-2014 дата публикации

SYSTEMS AND METHODS FOR EXTRACTING PRECIOUS METAL FROM FOULED CARBON

Номер: US20140318317A1
Автор: Allen Rick, Chapman, JR. Hank
Принадлежит: The Vault Corporation

A system for ashing carbon includes a vertically oriented burner column having a first end and an opposing end with an interior chamber therebetween. The burner column has an aperture at the first end and a suction port proximal to the second end, the aperture and the suction port in communication with the interior chamber. The system also comprises a porous media screen located in the interior chamber and positioned between the first end and the second end of the burner column. The media screen is adapted to hold ignited carbon containing a precious metal therein. The system also contains a pump that is coupled to the suction port. The pump is configured to apply a negative pressure to the interior chamber of the burner column to draw air into the interior chamber via the aperture. The drawn air passes through the ignited carbon at a desired flow rate to achieve a temperature of the carbon suitable for ashing the carbon. 1. A system for ashing carbon , the system comprising:a vertically oriented burner column having a first end and a opposing end and an interior chamber therebetween, the burner column having an aperture at the first end and a suction port proximal to the second end, the aperture and the suction port in communication with the interior chamber;a porous media screen located in the interior chamber and positioned between the first end and the second end of the burner column, the media screen adapted to hold ignited carbon containing a precious metal therein; anda pump coupled to the suction port of the burner column, the pump configured to apply a negative pressure to the interior chamber of the burner column to draw air into the interior chamber via the aperture and through the ignited carbon at a desired flow rate to achieve a temperature of the carbon suitable for ashing the carbon.2. The system of claim 1 , wherein the pump comprises an entry port suitable for receiving a vapor stream generated from the ignited carbon in the interior chamber of the ...

Подробнее
Номер записи: 96
16-08-2018 дата публикации

Method for Separating Mill Scale from Wastewater

Номер: US20180229155A1
Автор: MA Naiyang
Принадлежит:

A method for collecting mill scale from a hot rolling mill is provided. The hot rolling mill includes a flume. The method includes transporting mill scale particles in wastewater, retrieving the wastewater from a flume of the hot rolling mill and separating the mill scale particles from the wastewater using a separator. A hot rolling mill and a method for retrofitting a hot rolling mill are also provided. 1. A method for collecting mill scale from a hot rolling mill , the hot rolling mill including a flume , the method comprising the steps of:transporting mill scale particles in wastewater;retrieving the wastewater from a flume of the hot rolling mill; andseparating the mill scale particles from the wastewater using a separator.2. The method as recited in wherein the separator is a grit separator.3. The method as recited in further comprising the steps of collecting the mill scale particles.4. The method as recited in further comprising the step of:dewatering the collected mill scale.5. The method as recited in wherein the wastewater is turbulent or running at high speeds in the flume.6. The method as recited in wherein the separator is provided downstream from a reheat furnace claim 1 , scalebreaker claim 1 , roughing stand claim 1 , cooling stand or finishing stand.7. The method as recited in wherein the separator is located in the flume.8. The method as recited in wherein the separator is located upstream of a pit.9. The method as recited in further comprising the step of:directing the remaining wastewater downstream in the hot rolling mill.10. The method as recited in claim 9 , wherein the remaining wastewater is directed to a pit.12. A hot rolling mill comprising:a reheat furnace for reheating a steel slab;at least one stand for processing the steel slab downstream of the reheat furnace;a flume connected to the at least one stand transporting mill scale particles and wastewater; anda separator in the flume for separating mill scale particles from the wastewater ...

Подробнее
Номер записи: 97
16-07-2020 дата публикации

Method for preparing iron alloy and cement material

Номер: US20200223752A1
Автор: Chao Geng, Jianguo Liu, Shichao WU, Shuyao YU
Принадлежит: TSINGHUA UNIVERSITY

A method for preparing iron alloy and a cement material, in the field of solid waste recycling, provides an efficient, synergistic effect between main components of carbon, calcium and heavy metal in municipal solid waste incineration (MSWI) fly ash and main components of iron, aluminum and silicon in red mud, so that the iron alloy and cement material can be readily obtained. By using waste to treat waste and using the complementarity of the components of two waste streams, carbon in the MSWI fly ash may provide a reductant to accelerate an iron mineral in the red mud to reduce into metal iron. With the formation of the metal iron, a siderophile heavy metal element in the MSWI fly ash is also accelerated to enter an iron phase. Meanwhile, the cement material is formed by Al 2 O 3 and SiO 2 in the red mud and CaO in the MSWI fly ash.

Подробнее
Номер записи: 98
23-08-2018 дата публикации

SELECTIVE SULFATION ROASTING OF RARE EARTH MAGNET WASTE

Номер: US20180237887A1
Автор: Carlson Brett, Taylor Patrick
Принадлежит: COLORADO SCHOOL OF MINES

The present invention relates to a sulfation method which processes a rare earth containing material. The material is roasted and exposed to a sulfur gas, then an aqueous leach to produce an insoluble metal oxide and a soluble rare earth sulfide. The insoluble and soluble material are separated utilizing a solid/liquid separator. Advantageously, the process eliminates the need for additional steps to precipitate the metal oxide in order to separate the metal from the rare earth. A system is also disclosed. 1. A method to selectively separate at least one rare earth metal from magnetic waste , comprising:roasting the magnetic waste in a sulfur gas environment at a temperature between about 300° C. and about 1000° C. to produce a roasted magnetic waste;leaching the roasted magnetic waste with an aqueous fluid to produce a rare earth liquid containing stream and an insoluble material, wherein the rare earth liquid containing stream comprises less than about 1 wt. % of a total weight of at least one metal, and wherein the insoluble material comprises the at least one metal of iron, cobalt, aluminum; andseparating the rare earth liquid containing stream and the insoluble material.2. The method of claim 1 , wherein the sulfur gas environment comprises air and sulfur dioxide.3. The method of claim 1 , wherein a ratio of the aqueous fluid to the roasted magnetic waste is between about 1:50 and about 1:10.4. The method of claim 1 , wherein the roasted magnetic waste comprises a metal oxide and an at least one stable rare earth sulfate.5. The method of claim 1 , wherein temperature is between about 600° C. and about 800° C.6. The method of claim 1 , wherein the at least one metal is an iron claim 1 , a cobalt claim 1 , aluminum and combinations thereof.7. The method of claim 2 , wherein the sulfur dioxide is recycled.8. The method of claim 1 , wherein a metal sulfide is not formed following the roasting of the magnetic waste.9. The method of claim 1 , further comprising ...

Подробнее
Номер записи: 99
10-09-2015 дата публикации

METHOD FOR COMPREHENSIVELY RECOVERING RARE EARTH ELEMENTS AND FLUORINE ELEMENT IN A BASTNAESITE TREATMENT PROCESS

Номер: US20150252449A1
Автор: Cui Dali, Feng Xingliang, HUANG Xiaowei, Long Zhiqi, WANG Liangshi, Xu Yang, Yu Ying
Принадлежит:

A method for comprehensively recovering rare earth elements and fluorine element in a bastnaesite treatment process. The method comprises: oxidation roasting a bastnaesite, and leaching a roasted mixture using a hydrochloric acid, adding a roasting promoter to the bastnaesite during the roasting process; and/or during the leaching process using the hydrochloric acid, adding a catalytic leaching promoter into the mixture, obtaining a rare earth chloride solution containing little cerium element and a cerium-rich residue containing the fluorine element; and separating and recovering rare earth fluorides from the cerium-rich residue. 1. A method for comprehensively recovering rare earth elements and fluorine element in a bastnaesite treatment process , wherein the method comprises:oxidation roasting a bastnaesite, and leaching a roasted mixture using a hydrochloric acid,adding a roasting promoter to the bastnaesite during the roasting process; and/oradding a catalytic leaching promoter into the mixture during the leaching process using the hydrochloric acid;obtaining a rare earth chloride solution containing little cerium element and a cerium-rich residue containing the fluorine element; andseparating and recovering rare earth fluorides from the cerium-rich residue.2. The method for comprehensively recovering rare earth elements and fluorine element in a bastnaesite treatment process according to claim 1 , wherein the roasting promoter is at least one of sodium sulfate claim 1 , potassium sulfate claim 1 , magnesium sulfate claim 1 , ammonium sulfate claim 1 , aluminum sulfate claim 1 , rare earth sulfates claim 1 , ammonium ceric nitrate claim 1 , cerium (IV) nitrate claim 1 , aluminum nitrate claim 1 , aluminum chloride claim 1 , sodium fluoride claim 1 , potassium fluoride claim 1 , ammonium fluoride and aluminum fluoride.3. The method for comprehensively recovering rare earth elements and fluorine element in a bastnaesite treatment process according to claim 2 , ...

Подробнее
Номер записи: 100