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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

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Мониторинг СМИ

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

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 5684. Отображено 100.
31-05-2012 дата публикации

Process and Composition for Froth Flotation

Номер: US20120132571A1
Автор: Duane J. Lewis, Paul A. Filler
Принадлежит: Individual

A method for conducting froth flotation using a collector which is primarily hydrocarbon in nature or is a mixture of hydrocarbons with certain oxygenates, the collectors being substantially free of polynuclear aromatics, sulfur and nitrogen.

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Номер записи: 1
22-08-2013 дата публикации

Materials and process for enhancing selective separations

Номер: US20130217791A1
Автор: Brian L. Swift, John B. Hines, Pablo G. Dopico
Принадлежит: Georgia Pacific Chemicals LLC

Use of a Maillard reaction product as an adjuvant in a variety of applications including solid-liquid separations, corrosion inhibition, emulsification, dust suppression, slow release fertilization, viscosity modification and others and especially as a depressant or collector in separation processes, including the selective separation of solids and/or ionic species from aqueous media, such as in the process of froth flotation.

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Номер записи: 2
20-02-2014 дата публикации

Collectors for ore beneficiation

Номер: US20140048453A1
Автор: Isabelle Birken, Mathieu Spinnhirny
Принадлежит: Carbonisation et Charbons Actifs CECA SA

The present invention relates to fatty alkoxylated polyamine collectors for the beneficiation by flotation of aqueous suspensions of ores, the use of said fatty alkoxylated polyamine collectors in flotation processes for the beneficiation of ores, more particularly in reverse flotation processes for the beneficiation of silicates containing-ores.

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Номер записи: 3
07-01-2021 дата публикации

METHOD FOR PREPARING THIONOCARBAMATE AND CO-PRODUCING 2-MERCAPTOETHANOL OR O-ALKYLTHIOETHYL XANTHATE

Номер: US20210002218A1
Автор: CAO Zhanfang, HUANG Xiaoping, WANG Shuai, ZHONG Hong
Принадлежит: CENTRAL SOUTH UNIVERSITY

The invention belongs to the field of mineral flotation collector materials, and particularly discloses a method for preparing thionocarbamate. In the preparation process, xanthate and 2-haloethanol are esterified to obtain O-alkyl-S-hydroxyethyl xanthate, and then O-alkyl-S-hydroxyethyl xanthate and fatty amine are reacted to obtain a mixture of thionocarbamate and 2-mercaptoethanol. The mixture of thionocarbamate and 2-mercaptoethanol is washed with alkali, and the oil phase and water phase are separated. The oil phase and water phase are thionocarbamate and 2-hydroxyethylthiolate, respectively, and 2-mercaptoethanol is obtained by washing with an acid. 2-alkylthioethanol is obtained by reacting 2-hydroxyethanethiolate with alkyl halide, and then with carbon disulfide and alkali to prepare O-alkylthioethyl xanthate. Thionocarbamate, 2-mercaptoethanol and O-alkylthioethyl xanthate prepared by this method possess high yield and high purity. The process is green and environmentally friendly, and is beneficial to the industrialization of co-production. 3. The method according to claim 1 , whereinthe aminolysis reaction in step 2) is conducted at a temperature of 30-100° C. for reaction time of 1-6 h; andthe fatty amine is added at an amount of 0.9-1.2 times a molar weight of the O-alkyl/alkylthioethyl-S-hydroxyethyl xanthate.4. The method according to claim 1 , wherein in step 3) claim 1 , the mixture of the thionocarbamate and the 2-mercaptoethanol is washed 1-5 times with the alkali having a concentration of 0.1-5 mol/L.5. A method for preparing a thionocarbamate and co-producing 2-mercaptoethanol claim 1 , comprising: washing the 2-hydroxyethyl thiolate obtained in step 3) in the method according to claim 1 , with an acid claim 1 , to obtain the 2-mercaptoethanol.7. The method according to claim 6 , wherein the thioalkylation reaction is conducted at a temperature of 5-50° C. for a reaction time of 0.5-3 h claim 6 , andthe alkyl halide is added at an amount of 0.8- ...

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Номер записи: 4
13-01-2022 дата публикации

Methods for Separating and Dewatering Fine Particles

Номер: US20220010226A1
Автор: Roe-Hoan Yoon
Принадлежит: Virginia Tech Intellectual Properties Inc

A process for cleaning and dewatering hydrophobic particulate materials is presented. The process is performed in in two steps: 1) agglomeration of the hydrophobic particles in a first hydrophobic liquid/aqueous mixture; followed by 2) dispersion of the agglomerates in a second hydrophobic liquid to release the water trapped within the agglomerates along with the entrained hydrophilic particles.

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Номер записи: 5
14-01-2021 дата публикации

Cold water collector saponification method

Номер: US20210008571A1
Автор: William Giovanni Osoy Gonzalez
Принадлежит: Individual

A cold water saponification method is disclosed. The method is for preferred use in industrial applications such as mining operations wherein saponification of fatty acids is required. Broadly, the method comprises the steps of filling a tank with a solution comprising water, a base and fatty acids, installing a mixer capable of creating a vortex in order to effectively saponify fatty acid particles. The use of a high-shear mixer installed vertically has been proven successful in saponifying fatty acids in cold water.

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Номер записи: 6
16-01-2020 дата публикации

FROTH FLOTATION WITH ANISOTROPIC PARTICLE COLLECTORS

Номер: US20200016609A1
Автор: Baldauf Julia, Bojovschi Alexe, Mashford Benjamin S., Schieber Christine, Yiapanis George
Принадлежит:

In one example, a method includes providing a pulp composed of a combination of particulate materials including particles of a target material. The pulp is mixed with a collector composed of anisotropic particles having at least two separate spatial domains that have different physiochemical properties, and the mixture of pulp and collector is fed into an aqueous solution containing air bubbles. 1. A system , comprising: a first feed line coupled to a source of a pulp; and', 'a second feed line coupled to a source of a collector;, 'a mixing chamber comprisingthe source of the collector, wherein the source of the collector comprises anisotropic particles having at least two separate spatial domains that have different physiochemical properties; and a third feed line coupled to a source of air; and', 'a fourth feed line coupled to an output of the mixing chamber., 'a flotation chamber comprising2. The system of claim 1 , wherein the mixing chamber further comprises:an ultrasound sonicator positioned in the mixing chamber.3. The system of claim 1 , wherein a first domain of the at least two separate spatial domains is hydrophobic claim 1 , and a second domain of the at least two spatial domains is hydrophilic.4. The system of claim 1 , wherein the pulp comprises a combination of particulate materials including particles of a target material.5. The system of claim 4 , wherein at least some particles of the anisotropic particles comprise:a plurality of hydrocarbon chains; andfunctional groups borne on a first subset of the plurality of hydrocarbon chains.6. The system of claim 5 , wherein the functional groups selectively adsorb the at least some of the particles to the particles of the target material.7. The system of claim 6 , wherein a mechanism of adsorption that selectively adsorbs the at least some of the particles to the particles of the target material comprises electrostatic interaction.8. The system of claim 6 , wherein a mechanism of adsorption that ...

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Номер записи: 7
21-01-2021 дата публикации

Process for Macroscopically Separating Maceral Concentrate From Raw Coal

Номер: US20210016292A1
Автор: Huang Wei, LIANG Litong, PENG Zeyu, TU Chunyan, Wang Dong, Wang Jun
Принадлежит: TAIYUAN UNIVERSITY OF TECHNOLOGY

Processes for macroscopically separating a maceral concentrate from raw coal are disclosed. In some embodiments, a process includes the following steps: crushing and sieving the raw coal to obtain a first coal sample and a second coal sample; subjecting the first coal sample to a heavy medium cyclone separation process; and subjecting the second coal sample to a froth flotation process. The first coal sample has a particle size within a first particle size range, and the second coal sample has a particle size within a second particle size range. In other embodiments, the froth flotation process uses a froth flotation agent including a foaming agent and a collector. The foaming agent includes at least one item selected from the group consisting of 2-octanol, terpenic oil, and polyethylene glycol (PEG). The collector includes at least one item selected from the group consisting of kerosene, diethyl phthalate (BET), and diesel. 1. A process for macroscopically separating a vitrinite concentrate from an inertinite concentrate by treating raw coal , comprising the steps of: the first coal sample has a particle size within a first particle size range of 2-2 mm, and', 'the second coal sample has a particle size within a second particle size range of 0-0.2 mm;, '(1) crushing and sieving the raw coal to obtain a first coal sample and a second coal sample, wherein'}(2) subjecting the first coal sample to a heavy medium cyclone (HMC) separation process to separate a first vitrinite concentrate from a first inertinite vitrinite concentrate; and(3) subjecting the second coal sample to a froth flotation process to separate a second vitrinite concentrate from a second inertinite concentrate.2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. The process of claim 1 , wherein the HMC separation process comprises a concentration separation stage and a fine separation stage.8. The process of claim 7 , wherein the HMC separation process further comprises:{'sup': '3', ' ...

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Номер записи: 8
10-02-2022 дата публикации

FLOTATION OILS, PROCESSES AND USES THEREOF

Номер: US20220040708A1
Автор: WHEELER Charles, WHEELER Lucie B.
Принадлежит: ENVIROLLEA INC.

The present disclosure relates to flotation oils, processes for making such flotation oils, and uses thereof for example in the froth flotation of ores such as sylvinite ores to recover potassium chloride. 168-. (canceled)69. A flotation oil comprising:an intermediate stream obtained from an upgrader, a refinery, a slop, or slurry tank of gasoil and/or heavier streams, a density at 15° C., as measured by ASTM-D4052, of 0.87 g/ml to 1.2 g/ml;', 'a flash point, as measured by ASTM D93, that is equal to or greater than 50° C.; and', 'a resin content, as measured by SARA (Determination of Saturates, Aromatics, Resins, and Asphaltenes (SARA) as measured by IP-469), of 2 wt. % to 25 wt. %., 'wherein the flotation oil comprises at least one of the following properties70. The flotation oil of claim 69 , further comprising an additive.71. The flotation oil of claim 70 , wherein the additive is chosen from a vacuum pitch having a specific gravity (SG) greater than 1.0 claim 70 , a gasoil having a specific gravity (SG) greater than 0.75 claim 70 , a tackifier claim 70 , a pour point suppressant and an odour modifier.72. The flotation oil of claim 69 , wherein the flotation oil comprises a density at 15° C. claim 69 , as measured by ASTM-D4052 claim 69 , of 0.93 g/ml to 1.1 g/ml.73. The flotation oil of claim 69 , wherein the flotation oil comprises a flash point claim 69 , as measured by ASTM D93 claim 69 , that is greater than 55° C.74. The flotation oil of claim 69 , wherein the flotation oil comprises a flash point claim 69 , as measured by ASTM D93 claim 69 , that is greater than 60° C.75. The flotation oil of claim 69 , wherein the flotation oil comprises a resin content claim 69 , as measured by SARA (Determination of Saturates claim 69 , Aromatics claim 69 , Resins claim 69 , and Asphaltenes (SARA) by IP-469) claim 69 , of 4 wt. % to 20 wt. %.76. The flotation oil of claim 69 , wherein the flotation oil comprises a resin content claim 69 , as measured by SARA ( ...

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Номер записи: 9
02-02-2017 дата публикации

DEPRESSION OF COPPER AND IRON SULFIDES IN MOLYBDENITE FLOTATION CIRCUITS

Номер: US20170028409A1
Автор: COOK Theodore E., DIMITRIADIS Alexandros
Принадлежит:

A method of depressing copper sulfides and iron sulfides in a molybdenite floatation recovery process uses alkaline or alkaline earth polysulfides at high concentrate pH. The method of enriching molybdenite content from a slurry having molybdenite and at least one of iron sulfides and copper sulfides can include the steps of adding an effective amount of a depressing reagent selected from one or more alkaline poly sulfides, alkaline earth polysulfides, or a mixture thereof, to the slurry, wherein the pH of the slurry is greater than about 8.0; and passing a gas through the slurry to separate material by selective flotation, recovering the molybdonite from a froth. 2. The method of wherein the pH of the slurry before adding the depressing reagent is at or above pH 8.5 and less than 10.3. The method of claim 1 , wherein the polysulfides comprise calcium polysulfides.4. The method of claim 3 , wherein the calcium polysulfides have an average of between 4 and 4.5 sulfur atoms per molecule.5. The method of claim 1 , wherein the depressing reagent comprises an alkaline polysulfide selected from sodium polysulfide claim 1 , potassium polysulfide claim 1 , or a mixture or a combination thereof.6. The method of claim 5 , wherein the alkaline polysulfide has an average of between 2 and 4 sulfur atoms per molecule.7. The method of claim 1 , wherein the depressing reagent is substantially free of thiosulfates.8. The method of claim 1 , wherein the depressing reagent is added at a rate of between 0.003 to 0.0125 Kg of polysulfide(s) per Kg of concentrate (dry basis).9. The method of claim 3 , wherein the calcium polysulfides are added at a rate of about 0.003 to 0.006 Kg per Kg of concentrate (dry basis).10. The method of claim 1 , wherein the depressing reagent is sodium polysulfide and is added at a rate of about 0.005 to 0.008 Kg per Kg of concentrate (dry basis).11. The method of claim 1 , wherein the depressing reagent is potassium polysulfide and is added at a rate of ...

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Номер записи: 10
02-02-2017 дата публикации

BENEFICIATION OF RARE EARTH ELEMENTS BEARING ANCYLITE

Номер: US20170028410A1
Автор: Anderson Corby G., Cui Hao
Принадлежит:

Disclosed herein are methods and systems for recovery of ancylite, a rare earth mineral comprising strontium carbonate, from rare earth ore. In many embodiments, the disclosed methods and systems provide for recovery of greater than 50% of the ancylite from an ancylite containing ore. In many embodiments, the ore is subjected to flotation in the presence of an acid, for example a hydroxamic acid, such as octanohydroxamic acid. The ore may also be subjected to magnetic separation, for example wet high intensity magnetic separation. 1. A method of increasing the concentration of a ancylite in an ore sample , the method comprising:combining the ancylite containing ore sample and a collector comprising a hydroxamic acid;agitating the ancylite/collector combination;floating the ancylite/collector combination to obtain a tailing fraction and a concentrated ancylite fraction;separating the tailing fraction from the ancylite fraction, and thereby obtaining an ore sample with increased concentration of ancylite.2. The method of claim 1 , wherein the ore sample has a mesh size less than about 100 mesh.3. The method of claim 1 , wherein the floating is performed by passing a gas through the combination.4. The method of claim 1 , wherein the hydroxamic acid is octanohydroxamic acid.5. The method of claim 4 , wherein the collector comprises octanohydroxamic acid and potassium ethyl xanthate.6. The method of claim 1 , wherein the collector concentration is between about 0.003 and 0.0001 mol/liter.7. The method of claim 1 , wherein the pH of the ancylite/collector combination is between about 6 and 11.8. The method of claim 1 , wherein strontium nitrate is added to the ancylite/collector combination.9. The method of claim 1 , wherein floating is performed with solids at between 10% and 40%.10. The method of claim 1 , wherein the ore sample is subjected to crushing and grinding prior to the combining step.11. The method of claim 1 , wherein claim 1 , prior to the combining step ...

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Номер записи: 11
08-02-2018 дата публикации

Mining Collector Compositions Containing Dodecylmethyl Sulfide and Processes for the Recovery of Metals Therewith

Номер: US20180036742A1
Автор: Byers Jim D., KREIDER Jason L., LASSEN Kenneth M.
Принадлежит:

The present invention discloses water-based mining collector compositions containing dodecylmethyl sulfide. Floatation processes for recovering metals, such as copper and molybdenum, from ores using the mining chemical collector compositions also are disclosed. 1. A flotation process for the recovery of a metal from an ore , the process comprising:contacting the ore with a collector composition, wherein the collector composition comprises dodecylmethyl sulfide and water.2. The process of claim 1 , wherein the collector composition further comprises a pH control agent.3. The process of claim 1 , wherein the collector composition further comprises a frothing agent.4. The process of claim 1 , wherein:the collector composition further comprises a pH control agent and a frothing agent; andthe collector composition comprises less than 0.1 wt. % dodecylmethyl sulfide, excluding the weight of water.5. The process of claim 4 , wherein the collector composition and the ore are contacted at an amount of the collector composition claim 4 , excluding water claim 4 , per ton of ore in a range from about 1 g to about 5 kg.6. The process of claim 1 , wherein the collector composition further comprises a second mining chemical collector agent.7. The process of claim 6 , wherein the second mining chemical collector agent comprises a xanthate claim 6 , a xanthic ester claim 6 , a thionocarbonate claim 6 , a dialkyl dithiophosphate claim 6 , or any combination thereof.8. The process of claim 1 , wherein the metal comprises gold claim 1 , silver claim 1 , platinum claim 1 , copper claim 1 , nickel claim 1 , iron claim 1 , lead claim 1 , zinc claim 1 , molybdenum claim 1 , cobalt claim 1 , chromium claim 1 , or combinations thereof.9. The process of claim 1 , wherein the collector composition further comprises a pH control agent and a frothing agent.10. The process of claim 9 , wherein the metal comprises copper claim 9 , and a percent recovery of copper from the ore is at least about 85 ...

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Номер записи: 12
08-02-2018 дата публикации

Processes for Mineral Ore Flotation in the Presence of Multivalent Metal Ions

Номер: US20180036743A1
Автор: Anna CASASÚS, Duane C. Wilson, Scott Rosencrance, Xihui YIN
Принадлежит: KEMIRA OYJ

Processes for enriching a desired mineral from an ore comprising the desired mineral and gangue, are provided, wherein the process comprises carrying out a flotation process in the presence of one or more chelating agents, one or more collecting agents, one or more types of multivalent metal ions, and optionally, one or more depressants, in a solution, wherein the one or more chelating agents are capable, alone or as a group of compounds, of sequestering a metal or metal ion in the form of a metal-chelating agent complex that remains at least partially soluble in the solution.

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Номер записи: 13
24-02-2022 дата публикации

METHOD AND ARRANGEMENT FOR PROCESS WATER TREATMENT

Номер: US20220055039A1
Автор: Jansson Kaj
Принадлежит: Metso Outotec Finland Oy

A method of treating process water of a flotation plant is disclosed. The flotation plant comprises a mineral flotation line and a process water circuit for treating underflow and/or overflow of the flotation line. The process water circuit comprises a gravitational solid-liquid separator for dewatering underflow and/or overflow of the mineral flotation line to separate sediment from supernatant comprising at least water and unrecovered fine particles comprising valuable material; and a recover water tank for collecting process water. According to the method, prior to leading supernatant from the gravitational solid-liquid separator into the recover water tank, it is subjected to cleaning flotation, in which at least % of the flotation gas bubbles have a size from 0.2 to 250 μm, in a cleaning flotation unit. An arrangement for treating process water of a flotation plant, and its use are also disclosed. 1. A method of treating process water of a flotation plant for the recovery of a valuable material , the flotation plant comprising a mineral flotation line , the mineral flotation line comprisinga grinding mill;a classification circuit for classifying a feed of ground ore from the grinding mill into classifier overflow and classifier underflow; anda mineral flotation circuit for treating classifier overflow as infeed of ore particles comprising valuable material suspended in slurry, the flotation circuit comprising a rougher part for the separation of slurry infeed into rougher overflow of recovered valuable material and rougher underflow of reject, and a cleaner part arranged to receive rougher overflow from the rougher part as slurry infeed, for the separation of slurry into cleaner overflow of recovered valuable material and cleaner underflow arranged to flow back into the rougher part as slurry infeed,the flotation plant further comprising a process water circuit for treating underflow and/or overflow of the mineral flotation line, the process water circuit ...

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Номер записи: 14
24-02-2022 дата публикации

ENVIRONMENTALLY-FRIENDLY COMPOSITIONS AND METHODS FOR EXTRACTING MINERALS AND METALS FROM ORE

Номер: US20220055042A1
Автор: FARMER Sean, KARATHUR Karthik N.
Принадлежит:

The subject invention provides safe, environmentally-friendly, compositions and methods for extracting minerals and/or metals from ore. More specifically, the subject invention provides for bioleaching using a composition comprising one or more biosurfactant-producing microorganisms and/or microbial growth by-products. In specific embodiments, the composition comprises biosurfactant-producing yeasts and/or their growth by-products. 1. A decadmiation composition comprising a sophorolipid biosurfactant , an acid and , optionally , a pH adjuster , wherein the sophorolipid is a linear sophorolipid or a derivative of a linear sophorolipid; and wherein the acid is selected from acetic acid , citric acid , lactic acid , butyric acid , sorbic acid , benzoic acid , formic acid , fumaric acid , propionic acid , ascorbic acid , glyoxylic acid , malonic acid , pyruvic acid , oxalic acid , uric acid , malic acid , tartaric acid , sulfuric acid , nitric acid , phosphoric acid , hydrochloric acid , boric acid and analogs thereof2. The decadmiation composition of claim 1 , wherein the pH adjuster is present in the composition at a concentration that stabilizes the pH of the composition between 2-5.3. A method for extracting an impurity from phosphate ore claim 1 , the method comprising:(i) obtaining the phosphate ore, said ore comprising phosphate and an impurity;(ii) contacting a composition comprising a sophorolipid biosurfactant, an acid, and, optionally, a pH adjuster, with the ore for a period of time to yield a mixture comprising a treated phosphate ore and an impurity that has reacted with the composition; and(iii) separating the reacted impurity and composition from the mixture to obtain a reduced-impurity phosphate-containing material.4. The method of claim 3 , wherein the acid is selected from acetic acid claim 3 , citric acid claim 3 , lactic acid claim 3 , butyric acid claim 3 , sorbic acid claim 3 , benzoic acid claim 3 , formic acid claim 3 , fumaric acid claim 3 , ...

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Номер записи: 15
14-02-2019 дата публикации

USE OF ALKOXYLATED AMINES AS COLLECTOR AGENTS FOR ORE BENEFICIATION

Номер: US20190046994A1
Автор: BALOCHE Alain, Barreto Gilles, Birken Isabelle, GAMET (deceased) Jean-Paul, GIBERT Nathalie, JORDA Eric
Принадлежит: Arkema France

The present invention relates to the use for ore beneficiation, of at least one derivative of alkoxylated (polyester)amine. 117-: (canceled)20. The method of claim 19 , wherein:{'sup': '2', 'sub': 2', 'z, 'Ris an alkylene radical represented by the formula —(CH)—, wherein z is an integer from 1 to 20;'}{'sup': '4', 'Ris a hydrocarbyl group having 8-24 carbon atoms; and'}{'sup': '5', 'claim-ref': {'@idref': 'CLM-00019', 'claim 19'}, 'AO, n, p t, Rand X are as defined in .'}18. The method of claim 18 , wherein:each t is 1; and{'sup': '5', 'Ris a methyl or ethyl group.'}22. The method of claim 18 , wherein:each n is, independently from one another, 1 to 6; andp is 1 to 10.23. The method of claim 18 , wherein the ore is selected from the group consisting of calcium carbonates claim 18 , magnesium carbonates claim 18 , phosphates claim 18 , iron ores claim 18 , and mixtures thereof.24. The method of claim 18 , wherein the ore is selected from the group consisting of calcium carbonates claim 18 , calcium carbonate-containing materials claim 18 , and mixtures thereof.25. The method of claim 18 , wherein the ore is selected from the group consisting of wollastonite claim 18 , barite claim 18 , titanium oxides claim 18 , kaolin claim 18 , kaolinitic clays claim 18 , calcined kaolinitic clays claim 18 , montmorillonite claim 18 , sepiolite claim 18 , talc claim 18 , diatomaceous earths claim 18 , aluminium oxides claim 18 , aluminium oxides containing other elements claim 18 , other oxides claim 18 , sulfates and sulfides claim 18 , and mixtures thereof.26. The method of claim 18 , wherein the ore is selected from the group consisting potassium chloride claim 18 , metal-containing ores claim 18 , and mixtures thereof claim 18 , wherein the metal is iron claim 18 , platinum claim 18 , aluminium claim 18 , nickel claim 18 , copper claim 18 , or a mixture thereof.27. The method of claim 18 , which at least reduces the content in the ore of at least one mineral selected from the ...

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Номер записи: 16
14-02-2019 дата публикации

USE OF ALKOXYLATED AMINES AS COLLECTOR AGENTS FOR ORE BENEFICIATION

Номер: US20190046995A1
Автор: BALOCHE Alain, Barreto Gilles, Birken Isabelle, GAMET (deceased) Jean-Paul, GIBERT Nathalie, JORDA Eric
Принадлежит: Arkema France

Provided is a method of beneficiating an ore including contacting an ore with a compound represented by formula (1): 115.-: (canceled)18. The method of claim 17 , wherein:{'sup': '1', 'RCO is a saturated or unsaturated, linear or branched acyl group containing 12-24 carbon atoms;'}{'sup': '2', 'sub': 2', 'z, 'Ris an alkylene radical represented by the formula —(CH)—, wherein z is an integer from 1 to 20;'}{'sup': '4', 'Ris a hydrocarbyl group containing 8-24 carbon atoms; and'}{'sup': '5', 'claim-ref': {'@idref': 'CLM-00017', 'claim 17'}, 'AO, n, p, t, Rand X are as defined in .'}19. The method of claim 16 , wherein:each t is 1; and{'sup': '5', 'Ris a methyl or ethyl group.'}20. The method of claim 16 , wherein:each n is, independently from one another, 1 to 6; andp is from 1 to 10.21. The method of claim 16 , wherein the ore is selected from the group consisting of calcium carbonates claim 16 , magnesium carbonates claim 16 , phosphates claim 16 , iron ores claim 16 , and mixtures thereof.22. The method of claim 16 , wherein the ore is selected from the group consisting of calcium carbonates claim 16 , calcium carbonate-containing materials claim 16 , and mixtures thereof.23. The method of claim 16 , wherein the ore is wollastonite claim 16 , barite claim 16 , titanium oxides claim 16 , kaolin claim 16 , kaolinitic clays claim 16 , calcined kaolinitic clays claim 16 , montmorillonite claim 16 , sepiolite claim 16 , talc claim 16 , diatomaceous earths claim 16 , aluminium oxides claim 16 , aluminium oxides containing other elements claim 16 , or other oxides claim 16 , sulfates and sulfides claim 16 , including mixtures thereof.24. The method of claim 16 , wherein the ore is selected from the group consisting of potassium chloride claim 16 , metal-containing ores claim 16 , and mixtures thereof claim 16 , wherein the metal is selected from the group consisting of iron claim 16 , platinum claim 16 , aluminium claim 16 , nickel claim 16 , copper claim 16 , and ...

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Номер записи: 17
13-02-2020 дата публикации

PROCESS TO TREAT METAL OR MINERAL ORES AND COLLECTOR COMPOSITION THEREFOR

Номер: US20200048735A1
Автор: Cassel Oijar Anders, Lewis Andrew Clist, Siirak Johan, Slikta Alberto, SMOLKO-SCHVARZMAYR Natalija
Принадлежит: NOURYON CHEMICALS INTERNATIONAL B.V.

A collector composition and process to treat ores with a collector composition that comprises a nitrile group-containing compound of the formula (I) 2. Process of wherein R′═O or N—R″ claim 1 , and the sum of m claim 1 , j and x is from 0 to 10.3. Process of wherein the sum of m claim 1 , j and x is from 0 to 5.4. Process of wherein the nitrile-containing compound is of the formula R(R″)—N—(CHCN) claim 1 , whereinR is a saturated or unsaturated, linear or branched, hydrocarbon group containing 8 to 26 carbon atoms,R″ is a saturated or unsaturated, linear or branched, hydrocarbon group containing 1 to 26 carbon atoms or a hydrogen atom,z is 1 or 2,y is 0 or 1,the sum of z+y=2 or 3, andn is an integer of from 1 to 5.5. Process of wherein R and R″ each independently are an alkyl group or alkenyl group with 1 to 3 unsaturated bonds.6. Process of wherein R and R″ each independently are a linear alkyl or alkenyl group.7. Process of wherein the metal or mineral ore is a metallic sulfide ore containing copper claim 1 , gold claim 1 , platinum claim 1 , silver claim 1 , nickel claim 1 , molybdenum claim 1 , arsenic sulfides claim 1 , cobalt claim 1 , zinc claim 1 , lead claim 1 , tin claim 1 , antimony claim 1 , copper claim 1 , gold claim 1 , platinum claim 1 , or silver.8. Process of wherein the collector composition further comprises at least one of a collector selected from the group of nitrile claim 1 , xanthate claim 1 , dithiophosphate claim 1 , thionocarbamate claim 1 , thiocarbamate claim 1 , mercaptobenzylthiazole claim 1 , monothiophosphate and dithiophosphinates and hydroximate collectors claim 1 , or a frother selected from the group of phenols claim 1 , alkyl sulfates claim 1 , aliphatic alcohols claim 1 , C5-C8 cyclic alcohols claim 1 , alkoxyalkanes claim 1 , polypropylene glycol ethers claim 1 , polyglycol ethers claim 1 , polyglycol glycerol ethers claim 1 , pyridine base claim 1 , natural oils claim 1 , terpineol and cresols claim 1 , mixed ethers claim 1 ...

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Номер записи: 18
01-03-2018 дата публикации

SULFONATED MODIFIERS FOR FROTH FLOTATION

Номер: US20180057679A1
Автор: "OBrien Kevin", Hay Daniel N.T., Liu Jianjun
Принадлежит:

Improved sparge compositions for reverse froth flotation separation and uses thereof, and methods of reverse froth flotation are described. The sparge compositions comprise sulfonated polymeric modifiers which can act as dispersants and depressants, and the compositions are suitably used in the reverse froth flotation of particulate material containing ultrafine particles. For example, the compositions and methods can be used in the separation of iron oxide beneficiary from iron ores comprising silica, silicates, and the like. 1. A sparge composition comprising:(i) a medium;(ii) a metal oxide ore comprising a gangue and a beneficiary;(iii) an amine collector; and(iv) a modifier comprising one or more sulfonated polymers,wherein the beneficiary comprises an iron oxide.2. The sparge composition of claim 1 , wherein the gangue comprises silicate claim 1 , silica claim 1 , carbonate claim 1 , or a combination thereof.3. The sparge composition of claim 1 , wherein the modifier comprises a sulfonated natural polymer claim 1 , a sulfonated synthetic polymer claim 1 , or a combination thereof.4. The sparge composition of claim 1 , wherein the modifier comprises a sulfonated lignin claim 1 , a sulfonated starch claim 1 , a sulfonated cellulose claim 1 , a sulfonated guar gum claim 1 , a sulfonated xanthan gum claim 1 , or any combination thereof.5. The sparge composition of claim 1 , wherein at least one of the one or more sulfonated polymers has a weight average molecular weight of from about 300 g/mole to about 100 claim 1 ,000 g/mole and comprises a residue of sulfonated vinyl alcohol claim 1 , sulfonated acrylamide claim 1 , sulfomethylated acrylamide claim 1 , 2-acrylamido-2-methylpropane sulfonate claim 1 , styrene sulfonate claim 1 , or any combination thereof.6. The sparge composition of claim 5 , wherein the at least one of the one or more sulfonated polymers further comprises a residue of acrylic acid claim 5 , methacrylic acid claim 5 , acrylamide claim 5 , vinyl ...

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Номер записи: 19
01-03-2018 дата публикации

Sulfonated modifiers for froth flotation

Номер: US20180057680A1
Автор: Daniel N.T. Hay, Jianjun Liu, Kevin O'Brien, Paul Wiatr
Принадлежит: ECOLAB USA INC

Improved sparge compositions for reverse froth flotation separation and uses thereof, and methods of reverse froth flotation are described. The sparge compositions comprise sulfonated polymeric modifiers which can act as dispersants and depressants, and the compositions are suitably used in the reverse froth flotation of particulate material containing ultrafine particles. For example, the compositions and methods can be used in the separation of phosphate beneficiary from ores comprising phosphates, dolomite, calcite, clay, silica, silicates, carbonates, and mixtures thereof.

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Номер записи: 20
11-03-2021 дата публикации

CONCENTRATION PROCESS OF IRON ORE SLIMES

Номер: US20210069729A1
Автор: CARLAILE SILVA Klaydison, CURI SEGATO Maurício, PEREIRA LIMA Neymayer
Принадлежит:

The present application relates to a concentration process of iron minerals from ultrafine tailings (slimes) from iron ore processing through reverse flotation with pH between 8.5 and 10.5 with the addition of amide-amine type collector, or further a mixture thereof with traditional cationic collectors (amines), in the absence of any depressant, alternatively including a step of high field magnetic concentration, which allows to obtain a concentrate with iron content higher than 66% and contents of SiO2+Al2O3 below 4%. 1. A process of concentrating iron minerals from ultrafine tailings (slimes) from the processing of iron ore comprising:a) adjusting the pH of the slimes to a value in the range of 8.5 to 10.5 by adding a base;b) adding amide-amine type cationic collector, or a mixture of said collector with one or more other collectors, to the sludge and performing the conditioning of said collector;c) adjusting the pulp percent solids by addition of water; andd) performing reverse flotation, in the absence of depressant, to obtain an iron rich concentrate.2. The process according to claim 1 , further comprising a high field wet magnetic concentration step after step (d).3. The process according to claim 1 , wherein the slimes comprises ultrafine particles comprising iron minerals and gangue minerals (mainly quartz and kaolinite).4. The process according to claim 3 , wherein the iron minerals consist mainly of haematite and goethite claim 3 , and the iron content is 40 to 50%.5. The process according to claim 1 , wherein the slimes have 20 to 40% solids.6. The process according to claim 1 , wherein the base added in step (a) is sodium hydroxide (NaOH).7. The process according to claim 1 , wherein the amide-amine type cationic collector is a straight-chain collector formulated from fatty acids of vegetable origin.8. The process according to claim 7 , wherein the amide-amine type cationic collector used is commercially called Flotinor-5530®.9. The process according to ...

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Номер записи: 21
15-03-2018 дата публикации

Depressants for Mineral Ore Flotation

Номер: US20180071752A1
Автор: Durand Jean Robert, Moore Lucas, YIN Xihui
Принадлежит:

Depressants comprising a polymer comprising: a) recurring units of one or more acrylamide monomers; b) recurring units of one or more monomers selected from hydroxyalkyl alkylacrylate, allyloxyalkyldiol, allyloxyethanol, trimethylolpropane allyl ether, and 2-hydroxy ethyl acrylate; and optionally, c) recurring units of one or more acrylic acid monomers are provided. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue, wherein the process comprises carrying out a flotation process in the presence of one or more of the depressants. 1. A depressant comprising a polymer comprising a) recurring units of one or more acrylamide monomers; b) recurring units of one or more monomers selected from hydroxyalkyl alkylacrylate , allyloxyalkyldiol , allyloxyethanol , trimethylolpropane allyl ether , and 2-hydroxy ethyl acrylate; and optionally , c) recurring units of one or more acrylic acid monomers.2. The depressant of claim 1 , wherein the polymer comprises recurring units of one or more hydroxyalkyl alkylacrylate monomers.3. The depressant of claim 1 , wherein the recurring units in the polymer comprise about 70% to about 95% of the one or more acrylamide monomers and about 5% to about 30% of the one or more monomers selected from hydroxyalkyl alkylacrylate claim 1 , allyloxyalkyldiol claim 1 , allyloxyethanol claim 1 , trimethylolpropane allyl ether claim 1 , and 2-hydroxy ethyl acrylate.4. The depressant of claim 2 , wherein the one or more hydroxyalkyl alkylacrylate monomers comprises a hydroxyalkyl moiety and an alkylacrylate moiety.5. The depressant of claim 4 , wherein the alkyl of the hydroxyalkyl moiety is selected from a Clinear or branched alkyl and wherein the alkyl of the alkylacrylate moiety is selected from a Clinear or branched alkyl.6. The depressant of claim 2 , wherein the one or more hydroxyalkyl alkylacrylate monomers comprises hydroxyethyl methylacrylate.7. The depressant of claim 1 , wherein ...

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Номер записи: 22
22-03-2018 дата публикации

Agglomerated Hemicellulose Compositions, Methods of Preparation Thereof, and Processes for Enriching a Desired Mineral from an Ore

Номер: US20180078951A1
Автор: Casasús Anna I., Kofsky-Wofford Stephanie, Wilson Duane C., YIN Xihui
Принадлежит:

Methods for preparing agglomerated hemicellulose compositions are provided. Agglomerated hemicellulose compositions comprising agglomerates are also provided herein. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral, wherein the process comprises carrying out a flotation process in the presence of one or more collecting agents and a depressant composition comprising an agglomerated hemicellulose composition. 1. An agglomerated hemicellulose composition comprising agglomerates , wherein at least about 50% of the agglomerates are retained on a 20 mesh sieve , at least about 90% of the agglomerates are retained on a 100 mesh sieve , and the size of the agglomerates ranges from about 0.1 to about 15 mm.2. The agglomerated hemicellulose composition of claim 1 , wherein the agglomerated hemicellulose composition is prepared by a method comprising:(a) providing new or undigested plant material comprising hemicellulose;(b) combining new or undigested plant material comprising hemicellulose with a granulation fluid comprising a solvent, a caustic agent, and optionally an oxidizing agent and/or sequestering agent; and(c) agglomerating the new or undigested plant material comprising hemicellulose with the granulation fluid to form an agglomerated hemicellulose composition comprising agglomerates; wherein step (b) occurs before or simultaneously with step (c).3. The agglomerated hemicellulose composition of claim 2 , wherein step (c) comprises (i) agglomerating the new or undigested plant material comprising hemicellulose with the granulation fluid to provide a wet agglomerated hemicellulose composition and (ii) heating the wet agglomerated hemicellulose composition to provide the agglomerated hemicellulose composition.4. A method for preparing an agglomerated hemicellulose composition or a depressant composition claim 2 , comprising:(a) providing new or undigested plant material comprising hemicellulose;(b) combining new or ...

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Номер записи: 23
02-04-2015 дата публикации

Collectors for mineral flotation

Номер: US20150090666A1
Автор: James Adrian Counter, John D. Kildea
Принадлежит: ECOLAB USA INC

The invention provides methods and compositions for improving a froth flotation type separation. The method uses a microemulsion to improve the effectiveness of a collector. The improvement allows for low dosages of collector to work as well as much greater amounts of non-microemulsified collector.

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Номер записи: 24
02-04-2015 дата публикации

FROTHERS FOR MINERAL FLOTATION

Номер: US20150090919A1
Автор: Counter James Adrian, Kildea John D.
Принадлежит: ECOLAB USA INC.

The invention provides methods and compositions for improving a froth flotation type separation. The method uses a microemulsion to improve the effectiveness of a frother. The improvement allows for low dosages of frother to work as well as much greater amounts of non-microemulsified frother. 1. A method of enhancing the performance of a frother in a froth flotation separation of slurry in a medium , the method comprising the steps of:making a stable frother microemulsion,blending the microemulsion, the medium, fines, and optionally other additives, andremoving concentrate from the slurry by sparging the slurry.2. The method of in which the microemulsion improves the efficiency of froth separation process.3. The method of in which more concentrate is removed than if a greater amount of frother had been used in a non-microemulsion form.4. The method of in which the microemulsion comprises a continuous phase which is water and a dispersed phase claim 1 , the microemulsion as a whole by weight is made up of: 1-99% water claim 1 , blended with: 1-50% of an alcohol blend which is from the waste stream of the production of 2-ethyl hexanol claim 1 , 1-15% C8-C10 fatty acids claim 1 , 1-30% 2-butoxy ethanol claim 1 , 1-20% propylene glycol claim 1 , and 1-10% potassium hydroxide.5. The method of in which the microemulsion comprises a continuous phase which is water and a dispersed phase claim 1 , the microemulsion as a whole by weight is made up of: 1-99% water claim 1 , blended with: 1-50% of an alcohol blend which is from the waste stream of the production of 2-ethyl hexanol claim 1 , 1-20% C8-C10 fatty acids claim 1 , 1-30% 2-butoxy ethanol claim 1 , and 1-10% potassium hydroxide.6. The method of in which the microemulsion comprises a continuous phase which is water and a dispersed phase claim 1 , the microemulsion as a whole by weight is made up of: 1-99% water claim 1 , blended with: 1-50% of an alcohol blend which is from the waste stream of the production of 2-ethyl ...

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Номер записи: 25
12-04-2018 дата публикации

COMPOSITIONS AND METHODS FOR SELECTIVE SEPARATION OF MINERALS FROM SULFIDE ORES

Номер: US20180099293A1
Автор: Arinaitwe Esau, Brasse Mikael, NAGARAJ Devarayasamudram Ramachandran
Принадлежит:

Compositions including blends of one or more acrylamide/allyl thiourea polymer as a first depressant, and one or more carboxyalkyl dithiocarbamate compound as a second depressant, and their use as depressants in the beneficiation of sulfide minerals from ores and/or concentrates are disclosed herein, along with methods for selectively separating value sulfide minerals from non-value sulfide minerals in a froth flotation process for the recovery of such value minerals. 2. A composition according to claim 1 , wherein the first depressant and the second depressant are present at a weight ratio in a range from 20:80 to 80:20.3. A composition according to claim 2 , wherein the weight ratio of the first depressant to the second depressant is from 25:75 to 50:50.4. A composition according to claim 1 , wherein said blend of the first and second depressant is from 10 to 50 parts by weight claim 1 , per 100 parts by weight of water claim 1 , and having 4 Подробнее

Номер записи: 26
13-04-2017 дата публикации

MODERATELY OXIDIZED POLYSACCHARIDE DEPRESSANTS FOR USE IN IRON ORE FLOTATION PROCESSES

Номер: US20170100724A1
Автор: Wilson Duane C.
Принадлежит:

Depressants comprising a moderately oxidized polysaccharide having about 0.05 to about 4.5 mmol of anionic charge per gram at a pH of about 6 to about 7, or about 0.2 to about 5 mmol of anionic charge per gram at a pH of about 10 to about 11.2, are provided. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue, wherein the process comprises carrying out a flotation process in the presence of one or more of the depressants. 1. A depressant comprising a moderately oxidized polysaccharide having about 0.05 to about 4.5 mmol of anionic charge per gram at a pH of about 6 to about 7 , about 0.05 to about 5 mmol of anionic charge per gram at a pH of about 7 to about 8 , about 0.2 to about 5 mmol of anionic charge per gram at a pH of about 10 to about 11.2 , or about 0.2 to about 5 mmol of anionic charge per gram at a pH of about 10.5.2. The depressant of claim 1 , wherein the moderately oxidized polysaccharide has about 0.06 to about 0.11 mmol of anionic charge per gram at a pH of about 6 to about 7 claim 1 , or about 0.23 to about 0.36 mmol of anionic charge per gram at a pH of about 10 to about 11.2.3. The depressant of claim 1 , wherein the moderately oxidized polysaccharide is moderately oxidized starch.4. A depressant comprising a moderately oxidized polysaccharide prepared by heating a mixture of a polysaccharide claim 1 , one or more bases and one or more oxidizing agents in water.5. The depressant of claim 4 , wherein the polysaccharide is starch.6. The depressant of claim 4 , wherein the heating step is carried out at a temperature in the range of about 20° C. to about 100° C.7. The depressant of claim 4 , wherein the heating step is carried out for about 15 min to about 6 hours.8. The depressant of claim 4 , wherein the amount of water used in the treatment is the amount of water necessary to prepare a corn starch solution with a concentration of about 0.5% to about 50% by weight.9. The depressant of ...

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Номер записи: 27
13-04-2017 дата публикации

Amine Mining Collectors

Номер: US20170101371A1
Автор: Thomas P. Daly
Принадлежит: Thomas P. Daly

A family of amine mining collectors that uses alkoxylates allows for the easy adjustment of solubility and molecular weight useful because anionic and cationic mineral collectors require such varying degrees of solubility and molecular weight. The family of the present invention allows for the optimization of both parameters and an increase in collector efficiency.

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Номер записи: 28
23-04-2015 дата публикации

METHOD FOR THE BENIFICIATION OF COAL

Номер: US20150108043A1
Автор: Hines John B., Hurd Phillip W., Kennedy Dennis L.
Принадлежит: GEORGIA-PACIFIC CHEMICALS LLC

The present invention relates to the beneficiation of coal by the process of froth flotation and specifically relates to a process for the froth flotation of coal using a mixture of fatty acids and rosin acids (and/or certain derivatives of fatty acids and rosin acids) as a collector. 1. A froth flotation process , comprising: a fatty acid component comprising fatty acids, fatty acid derivatives, or a mixture thereof,', 'a rosin acid component comprising rosin acids, rosin acid derivatives, or a mixture thereof, and', 'at least 5 wt % of a non-saponifiable component, based on the combined weight of the fatty acid component, the rosin acid component, and the non-saponifiable component;, 'combining a collector and an aqueous slurry to produce a treated mixture, wherein the aqueous slurry comprises particles, and wherein the collector comprisesaerating the treated mixture to produce an aerated mixture, wherein the treated mixture is substantially free of fuel oil when the treated mixture is aerated; andrecovering a beneficiated product from the aerated mixture.2. The process of claim 1 , wherein the collector comprises at least 5 wt % to about 25 wt % of the non-saponifiable component claim 1 , based on the combined weight of the fatty acid component claim 1 , the rosin acid component claim 1 , and the non-saponifiable component.3. The process of claim 1 , wherein the collector comprises at least 8 wt% to about 25 wt % of the non-saponifiable component claim 1 , based on the combined weight of the fatty acid component claim 1 , the rosin acid component claim 1 , and the non-saponifiable component.4. The process of claim 1 , wherein the particles comprise coal particles and ash particles.5. The process of claim 4 , wherein the beneficiated product comprises at least a portion of the coal particles claim 4 , and wherein the beneficiated product has a reduced concentration of the ash particles relative to the coal particles as compared to the particles in the aqueous ...

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Номер записи: 29
21-04-2016 дата публикации

Production method for low-sulfur iron ore

Номер: US20160107170A1
Автор: Eishi KUSAKA, Katsuyuki Iijima, Takayasu Fujiura
Принадлежит: Kobe Steel Ltd

A process for producing an iron ore having a sulfur content reduced to 0.08% or less, which includes a step of subjecting an iron ore containing sulfur in an amount of more than 0.08% and 2% or less to a flotation. The flotation satisfies any one of the following (1) to (3): (1) a xanthate-based compound and a salt of an amine compound are used as collectors, (2) a xanthate-based compound is used as a collector and a substance which releases a sulfur ion in water is used as an activator, or (3) a xanthate-based compound and a salt of an amine compound are used as collectors and a substance which releases a sulfur ion in water is used as an activator.

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Номер записи: 30
23-04-2015 дата публикации

METHOD FOR THE RADIOACTIVE DECONTAMINATION OF SOIL BY DISPERSED AIR FLOTATION FOAM AND SAID FOAM

Номер: US20150110560A1
Автор: Faure Sylvain, Messalier Marc
Принадлежит:

The present invention relates to a process for treating an earth contaminated by at least one radionuclide such as cesium Cs comprising at least one step of separating said radionuclide by dispersed air flotation foam produced by blowing air bubbles in a suspension comprising said earth and at least one collector. The present invention also relates to the flotation foam obtained by implementing such a process. 1. A process for treating a contaminated earth by at least one radionuclide comprising:at least one step of separating said radionuclide by dispersed air flotation foam produced by blowing air bubbles in a suspension comprising said earth and at least one collector.2. The process according to claim 1 , wherein said radionuclide is selected from the group consisting of tritium H; carbon C; strontium Sr; yttrium Y; cesium Cs; barium Ba; americium Am; a radionuclide from the thorium 232 family; and a radionuclide from the uranium 238 family.3. The process according to claim 1 , wherein said radionuclide is cesium Cs.4. The process according to claim 1 , wherein said process is implemented in a flotation column or a flotation cell.5. The process according to claim 1 , further comprising the steps of:a) injecting air bubbles into a suspension comprising said earth and said at least one collector, to produce a foam; andb) separating at least one part of said foam from the rest of the suspension.6. The process according to claim 5 , wherein said suspension comprises:2-40% by weight of earth to be treated based on a total weight of the suspension;0.005-5% by weight of at least one collector based on the total weight of the suspension; andwater.7. The process according to claim 5 , wherein said collector is selected from a fatty acid claim 5 , a fatty acid salt and a cationic surfactant.8. The process according to claim 5 , wherein said collector is sodium oleate.9. The process according claim 5 , wherein said collector is tetradecyltrimethylammomum bromide (TTAB).10. ...

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Номер записи: 31
19-04-2018 дата публикации

Composition Of Fatty Acids And N-Acyl Derivatives Of Sarcosine For The Improved Flotation Of Nonsulfide Minerals

Номер: US20180104701A1
Автор: Gunter Lipowsky, Jacques Collin BEZUIDENHOUT, Jesús Pitarch López, Klaus-Ulrich Pedain
Принадлежит: CLARIANT INTERNATIONAL LTD

This invention relates to a collector composition for the direct froth flotation of nonsulfide ores comprising a) 50-99 wt.-% of a mixture of fatty acids and b) 1-50 wt.-% of an N-acyl derivative of sarcosine of the formula (I) wherein R is a saturated or unsaturated hydrocarbon chain with 7 to 21 carbon atoms, wherein the mixture of comprises 10.0-35.0 wt.-% of fatty acid having a saturated C 11 hydrocarbon group, 2.5-15.0 wt.-% of fatty acid having a saturated C 13 hydrocarbon group, 10.0-25.0 wt.-% fatty acid having a monounsaturated C 17 hydrocarbon group and 20.0-45.0 wt.-% fatty acid having a bisunsaturated C 17 hydrocarbon group.

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Номер записи: 32
20-04-2017 дата публикации

Effluent Treatment System

Номер: US20170106377A1
Автор: Helm Martin C., Helm Richard E., McGowan Roger Kendall
Принадлежит: Cimarron Land & Cattle Company, LLC

A dispersion for use with an effluent treatment system, and methods of making and using such a dispersion, whereby the dispersion includes an amount of polymer substantially uniformly dispersed within an aqueous solvent; wherein the dispersion is generated by combining an amount of gas with the amount of polymer and the aqueous solvent, the amount of gas effective to substantially uniformly disperse the amount of polymer within the aqueous solvent. 110-. (canceled)11. A method of making a dispersion for use with an effluent treatment system , said method comprising:combining an amount of gas with an amount of polymer and an aqueous solvent;wherein said amount of gas is effective to substantially uniformly disperse said amount of polymer within said aqueous solvent.12. The method of claim 11 , further comprising providing said amount of polymer in a range of between about 0.1% to about 50% of said dispersion by weight.13. The method of claim 11 , further comprising providing said aqueous solvent as water.14. The method of claim 13 , further comprising providing said gas as air.15. The method of claim 14 , further comprising providing said air as air bubbles.16. The method of claim 15 , further comprising firstly combining said amount of air with said water to provide an entrained air-water mixture; andsubsequently combining said entrained air-water mixture with said amount of polymer.17. The method of claim 15 , wherein said air bubbles generate mixing forces which relatively gently mix said amount of polymer and said water to substantially uniformly disperse said amount of polymer within said water to provide said dispersion.18. The method of claim 17 , further comprising substantially uniformly dispersing said amount of polymer within said water to provide a generally homogenous polymer-water mixture.19. The method of claim 17 , further comprising mixing said amount of polymer and said water by applying forces consisting of said mixing forces generated by said air ...

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Номер записи: 33
29-04-2021 дата публикации

COLLECTOR COMPOSITION CONTAINING BIODEGRADABLE COMPOUND AND PROCESS FOR TREATING SILICEOUS ORES

Номер: US20210121894A1
Автор: GUSTAFSSON Charlotte Ewa Karin, Gustafsson Jan Olof, SMOLKO SCHWARZMAYR Natalija
Принадлежит: NOURYON CHEMICALS INTERNATIONAL B.V.

The present disclosure relates to a collector composition containing (i) as a primary collector the compound of the formula (I) wherein R is an alkyl group containing between about 5 and about 16 carbon atoms that may be branched or linear, k is a value of about 1 to 3, m is an integer from about 0 to about 25, each A independently is —CH2-CH2— or —CH2CH(CH3)— or —CH2-CH(CH2-CH3)—, n is an integer of at least about 3 and at most about 8, and wherein X is an anion derivable from deprotonating a Brønsted-Lowry acid, and (ii) a second compound selected from the group of other primary collectors, secondary collectors, depressants, frothers, and solvents. The disclosure also relates to a process to treat siliceous ore that contains a step of froth flotating in the presence of a collector composition that contains the primary collector compound. 2. Collector composition of wherein R is an alkyl group that comprises about 8 to about 13 carbon atoms.3. Collector composition of wherein R is branched on the beta carbon atom from the oxygen atom.4. Collector composition of wherein n is 4 claim 1 , 5 or 6.5. Collector composition of wherein X is a halogenide claim 1 , a sulphate claim 1 , or a phosphate.6. Collector composition of wherein the secondary collector is chosen from unbranched and branched fatty alcohols claim 1 , alkoxylated fatty alcohols claim 1 , alkylamide ethoxylates claim 1 , and alkyl diethanol amide ethoxylates.9. Process of wherein the collector composition in addition comprises a component (ii) chosen from additional primary collectors claim 8 , secondary collectors claim 8 , depressants claim 8 , frothers and solvents.10. (canceled)11. Process of wherein the siliceous ore is an iron ore claim 8 , hematite ore claim 8 , magnetite ore claim 8 , phosphate ore claim 8 , calcite ore claim 8 , or potash ore.12. Process of that is a direct flotation of silicas.13. Process of wherein the process comprises the steps ofmixing a ground siliceous ore with an aqueous ...

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Номер записи: 34
28-04-2016 дата публикации

Methods and collectors for purifying phosphorous containing materials

Номер: US20160114335A1
Автор: David R. Snead
Принадлежит: Georgia Pacific Chemicals LLC

Compositions, aqueous mixtures that include the composition and an ore, and methods for making and using same are provided. The composition can include a tall oil and a saccharide-based monoester that can have the chemical formula (A). The aqueous mixture can include an ore, water, the tall oil, and the saccharide-based monoester that can have the chemical formula (A). The method can include combining the ore, water, the tall oil, and the saccharide-based monoester that can have the chemical formula (A) to produce an aqueous mixture. The method can also include collecting a purified ore from the aqueous mixture. In the chemical formula (A), R 1 can be a saccharide group having 1 to 14 hydroxyl groups and R 2 can be a C9 to C24 chain having 1 to 5 unsaturated bonds.

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Номер записи: 35
28-04-2016 дата публикации

MINERAL PROCESSING

Номер: US20160114336A1
Автор: Allen Warrick James David, CHILDS Simon David, Duffy Andrea, Horrocks Nicholas, LAKIN Elizabeth, MILNE Paul Edward Young, Rolfe James Leonard
Принадлежит: CiDRA Minerals Processing Inc.

According to the invention there is provided a method of processing a mixture of minerals including the steps of: 163-. (canceled)64. A method of processing a mixture of minerals including the steps of:(a) providing a mixture of minerals which includes a metal containing mineral and one or more unwanted gangue minerals;(b) achieving a contact between the mixture of minerals and polymeric material that includes a mineral binding moiety which selectively binds to the metal containing mineral; and(c) separating the gangue minerals and the polymeric material which has the metal containing mineral bound thereto.65. A method according to in which the metal containing mineral contains copper.68. A method according to in which the mineral binding moiety is a thionocarbamate claim 67 , thiourea claim 67 , thiol claim 67 , thiocycloalkane claim 67 , thiophosphate or xanthogen formate containing functional group.74. A method according to in which the polymer formed by polymerising the polymeric precursor encapsulates the mineral binding moiety.75. A method according to in which the polymer formed by polymerising the polymeric precursor is a homopolymer.76. A method according to in which the polymer is a copolymer produced by copolymerising the polymeric precursor with one or more other polymeric precursors and/or with a cross-linker.77. A method according to in which the polymeric material includes a methacrylate polymer.78. A method according to in which the polymeric material includes a silane polymer.79. A method according to in which the polymeric material includes a polymeric substrate having a surface which has the mineral binding moiety attached thereto.80. A method according to in which the polymeric material includes polymeric chains which are grafted onto the surface of the polymeric substrate claim 79 , wherein the polymeric chains include the mineral binding moiety.81. A method according to in which the polymeric substrate is an epoxide or a diisocyanate having the ...

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Номер записи: 36
09-06-2022 дата публикации

MIXTURE OF OCTENE HYDROFORMYLATION BY-PRODUCT AND DIESEL, KEROSENE OR C8-C20 OLEFINS AS COLLECTORS

Номер: US20220176385A1
Автор: Bai Qian, Dickie Scott Alexander, Michailovski Alexej, Villanueva Berindoague Adrian Mauricio
Принадлежит:

The presently claimed invention relates to a process for the beneficiation of coal and other hydrophobic materials, wherein a collector composition comprising by-products obtained by hydroformylation of octene isomers as a first component and diesel, kerosene and/or C-Colefins as a second component is used. 1. A method for the beneficiation of at least one material , the method comprising:a) providing a slurry comprising the at least one material dispersed in a liquid,b) contacting the slurry with a collector composition,c) recovering a beneficiated material,wherein the collector composition comprises a mixture of collector A and collector B;{'sub': 8', '20, 'wherein the collector A are by-products obtained by hydroformylation of octene isomers and the collector B is selected from the group consisting of diesel, kerosene and C-Colefins.'}2. The method according to claim 1 , wherein the by-products obtained by hydroformylation of octene isomers comprise at least one compound selected from the group consisting of isomers of dinonyl ether claim 1 , isomers of nonyl esters and isomers of trinonyl esters and trinonyl ethers.3. The method according to claim 1 , wherein the by-products obtained by hydroformylation of octene isomers comprise≥10 wt. % to ≤20 wt. % isomers of dinonyl ether,≥20 wt. % to ≤35 wt. % isomers of nonyl esters and≥25 wt. % to ≤45 wt. % isomers of trinonyl esters and trinonyl ethers.4. The method according to claim 1 , wherein the by-products have a boiling point of ≥294° C.5. The method according to claim 1 , wherein the by-products are obtained by hydroformylation of octene isomers at a temperature in the range of ≥120° C. to ≤240° C. and separating the by-products from the mixture by distillation at a temperature in the range of ≥200° C. to ≤250° C. to isolate the by-products.6. The method according to claim 1 , wherein the diesel comprises paraffins claim 1 , naphthenes and aromatic compounds.7. The method according to claim 1 , wherein the ...

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Номер записи: 37
09-06-2022 дата публикации

COLLECTOR COMPOSITIONS CONTAINING A N-ACYLATED AMINO ACID AND PROCESS TO TREAT NON-SULFIDIC ORES

Номер: US20220176386A1
Автор: GOLETS Mikhail, SMOLKO SCHWARZMAYR Natalija
Принадлежит: NOURYON CHEMICALS INTERNATIONAL B.V.

A collector composition suitable for treating non-sulfidic ores comprises 1. Collector composition suitable for treating non-sulfidic ores said composition comprising:(i) from about 1 to about 50 wt % of an N-acylated amino acid or salt thereof of the structural formula R1-CO—NX—CYH—(CH2)m-COOM(ii) from about 10 to about 80 wt % of an alcohol alkoxylate of the formula R2-(AO)n wherein R1 is an alkyl or alkenyl group of about 7 to about 21 carbon atoms, X is a hydrogen atom or methyl group, Y is a hydrogen atom, a C1-C4 alkyl, a C1-C4 hydroxylalkyl, a C1-C4 carboxyalkyl, or a C1-C4 aminoalkyl group, m is 0 or 1, M is a proton, an alkalimetal cation, or a quaternary ammonium cation, R2 is an alkyl group of about 6 to about 20 carbon atoms, each AO is independently ethyleneoxy or propyleneoxy, provided that at least part of AO is ethyleneoxy, and n is greater than about 2 and up to about 25, the wt % being based on the total weight of the composition.2. Collector composition of wherein Y is hydrogen or a C1-C4 alkyl.3. Collector composition of wherein R2 is derived from a C10-C16 aliphatic alcohol.4. Collector composition of according to wherein R2 has a degree of branching of from about 0.2 to about 3.55. Collector composition according to wherein m is 0 claim 1 , X is hydrogen claim 1 , Y is hydrogen or methyl.6. Collector composition according to comprising from about 5 to about 15 wt % of compound (i) and from about 30 to about 60 wt % of compound (ii) claim 1 , the wt % based on the total weight of the composition.7. Collector composition of according to wherein n is from about 4 to about 15.8. Collector composition of according to further comprising one or more components selected from the group of fatty acids claim 1 , alkyl benzene sulfonates claim 1 , alkyl phosphates claim 1 , alkyl sulfates claim 1 , alkyl sulfosuccinamates claim 1 , alkyl sulfosuccinates claim 1 , alkyl lactylates claim 1 , alkyl hydroxamates claim 1 , alkyl amides claim 1 , betaines claim ...

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Номер записи: 38
26-04-2018 дата публикации

PROCESS FOR SEPARATION OF AT LEAST ONE METAL SULFIDE FROM A MIXED SULFIDE ORE OR CONCENTRATE

Номер: US20180112288A1
Автор: HILLE Simon, Martinez Teodoro, TOMLINSON Marcus
Принадлежит:

A stabilization process for an arsenic solution comprising thiosulfates, the process comprising: acidifying the arsenic solution to decompose the thiosulfates, to yield an acidified solution; oxidizing the acidified solution to oxidize residual As to As and reduced sulfur species to sulfates, to yield a slurry comprising elemental sulfur; separating elemental sulfur from the slurry to yield a liquid; oxidizing the liquid to oxidize residual reduced sulfur species, to yield an oxidized solution; and forming a stable arsenic compound from the oxidized solution. 1. A stabilization process for an arsenic solution comprising thiosulfates , the process comprising:acidifying the arsenic solution to decompose the thiosulfates, to yield an acidified solution;{'sup': 3+', '5+, 'oxidizing the acidified solution to oxidize residual As to As and reduced sulfur species to sulfates, to yield a slurry comprising elemental sulfur;'}separating elemental sulfur from the slurry to yield a liquid;oxidizing the liquid to oxidize residual reduced sulfur species, to yield an oxidized solution; andforming a stable arsenic compound from the oxidized solution.2. The process of claim 1 , further comprising forming a stable arsenic compound from the oxidized solution claim 1 , at about atmospheric pressure.3. The process of claim 2 , wherein the stable arsenic compound comprises ferric arsenate.4. The process of claim 2 , wherein the stable arsenic compound is compliant with toxic characteristic leaching procedure (TCLP) standards.5. The process of any one of claim 1 , wherein the arsenic solution is derived from a mixed sulfide concentrate claim 1 , the mixed sulfide concentrate having at least one sulfide comprising antimony claim 1 , arsenic and at least one metal.6. The process of claim 5 , wherein antimony and arsenic are present in the mixed sulfide concentrate in a molar ratio of about 0.5:1 to about 1.5:1.7. The process of claim 6 , wherein antimony and arsenic are present in the mixed ...

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Номер записи: 39
18-04-2019 дата публикации

METHODS FOR FLOTATION RECOVERY OF VALUE MATERIAL FROM COARSE-SIZED PARTICLES

Номер: US20190111442A1
Автор: BHAMBHANI Tarun, Jankolovits Joseph, Nagaraj Devarayasamudram R.
Принадлежит: Cytec Industries Inc.

Methods and systems for the flotation recovery of value materials from sulfide mineral sources are disclosed. The flotation recovery of the value materials is performed in a fluidized bed flotation cell utilizing collector materials that include at least one hydrocarbyl group and at least one functional group including sulfur on the hydrocarbyl group, and the hydrocarbyl group includes 2 or more aliphatic carbons and 6 or more total carbons. The methods and systems of the present disclosure advantageously allow for improved recovery of coarse-sized particles, which reduces time and energy expending during sample grinding stages. The methods and systems of the present disclosure also do not exhibit the detrimental frothing behaviors which can be associated with long-chain collectors typically having 6 or more carbon atoms. The systems and methods can be incorporated into existing processing systems to treat samples before or after conventional processing stages. 1. A method for flotation recovery of sulfide minerals , the method comprising:providing a sulfide mineral source intermixed with a first liquid as a slurry;flowing a second liquid through said slurry to produce a fluidized bed; andintermixing at least one collector material and said sulfide mineral source and bubbling a gas through said fluidized bed to recover sulfide minerals from the sulfide mineral source,wherein said collector material includes at least one hydrocarbyl group and at least one functional group including sulfur on said hydrocarbyl group, and said hydrocarbyl group includes 2 or more aliphatic carbons and 6 or more total carbons.2. The method according to claim 1 , wherein said at least one functional group is selected from xanthates claim 1 , xanthate esters claim 1 , dithiocarbamates claim 1 , dithiophosphates claim 1 , dithiophosphinates claim 1 , thionocarbamates claim 1 , thioureas claim 1 , xanthogen formates claim 1 , monothiophosphates claim 1 , monothiophosphinates claim 1 , ...

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Номер записи: 40
04-05-2017 дата публикации

METHODS, DEVICES, SYSTEMS AND PROCESSES FOR UPGRADING IRON OXIDE CONCENTRATES USING REVERSE FLOTATION OF SILICA AT A NATURAL pH

Номер: US20170120258A1
Автор: Carlson Justin, Sgarlata Jonathan, Silva Ronney Rogerio Rodriguez
Принадлежит:

Cationic reverse flotation methods, systems, and processes for producing a marketable iron oxide concentrate from an iron oxide mineral slurry (“treatment slurry”), wherein the iron oxide content of the concentrate is greater than the iron oxide content of the treatment slurry, include introducing the treatment slurry into a flotation cell, together with a collector, a frother and optionally an iron oxide depressant, and recovering two flow streams from the flotation cell, namely a froth fraction (also referred to as a flotation tail fraction) and a sink material fraction (also referred to as the flotation concentrate), wherein the treatment slurry in the flotation cell is maintained at a Natural pH. 1. A method for processing a treatment slurry stream , comprising:introducing into a first flotation cell a treatment slurry stream, the treatment slurry comprising a mineral assemblage that includes a first concentration of silica and a second concentration of at least one iron oxide;metering into the first flotation cell a collector and a frother;recovering a froth fraction from the first flotation cell; andrecovering a sink material fraction from the first flotation cell;wherein the treatment slurry in the first flotation cell is maintained at a target pH of from 8.0 to 8.5; andwherein the sink material recovered from the first flotation cell comprises a silica concentration lower than the first concentration and an iron oxide concentrate having an iron concentration greater than the second concentration.2. The method of wherein the collector comprises an amine claim 1 , a diamine or a combination thereof.3. The method of wherein the collector is metered into the first flotation cell at a rate sufficient to maintain the treatment slurry at the target pH.4. The method of wherein the frother comprises methyl isobutyl carbonol.5. The method of wherein the frother comprises a mixture of an aliphatic alcohol claim 1 , an ester and an ether.6. The method of claim 1 , ...

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Номер записи: 41
25-08-2022 дата публикации

A COLLECTOR COMPOSITION

Номер: US20220266262A1
Автор: CHIPFUNHU Daniel, Dickie Scott Alexander, Michailovski Alexej
Принадлежит:

The present invention relates to a collector composition for the beneficiation of lithium silicates and magnesium silicates from an ore comprising different silicate minerals, their use in flotation processes and a method for the beneficiation of lithium silicates- and magnesium silicates-containing minerals using said collector composition. 1. A method for the beneficiation of lithium silicate minerals and magnesium silicate minerals from an ore comprising different silicate minerals , wherein the composition comprises: {'br': None, 'sup': 1', '1, 'G—C(═O)—NR—CH(R)—C(═O)—m formula (I),'}, 'A. at least one component (A) selected from compounds of formula (I) and salts thereof,'}{'sup': '1', 'sub': 6', '30, 'claim-text': {'sup': '1', 'sub': 1', '30, 'R and Rindependent of each other are selected from the group consisting of hydrogen and linear or branched, substituted or unsubstituted, saturated or unsaturated C-Chydrocarbon chain; and'}, 'wherein Gis a linear or branched, substituted or unsubstituted, saturated or unsaturated C-Chydrocarbon chain; and'}B. at least one component (B) selected from the group consisting of saturated or unsaturated alcohols containing at least 10 carbon atoms (B1) and an ester containing at least 10 carbon atoms (B2) derived from a mono-, di- or tri-functional carboxylic acid.2. The method according to claim 1 , wherein the lithium silicate or magnesium silicate minerals are selected from the group consisting of spodumene claim 1 , petalite claim 1 , lepidolite claim 1 , hectorite claim 1 , olivine and forsterite.3. The method according to claim 1 , wherein Ris selected from the group consisting of hydrogen claim 1 , —CH claim 1 , —CH(CH)CHCH claim 1 , —CH—CH(CH)CH claim 1 , —CH(CH) claim 1 , —CHCHSCH claim 1 , —CH-phenyl claim 1 , —CH(indolyl) claim 1 , —CH—CH—OH claim 1 , —CH—SH claim 1 , —CHCHC(═O)NH claim 1 , —CH(OH) and —CH(OH)CH.4. The method according to claim 1 , wherein R is selected from the group consisting of hydrogen claim 1 ...

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Номер записи: 42
25-08-2022 дата публикации

COLLECTOR COMPOSITION

Номер: US20220266263A1
Автор: Budemberg Gabriela, Kamkin Rostislav, Michailovski Alexej, Tropsch Juergen
Принадлежит:

Presently claimed invention is directed to a collector composition for the beneficiation of a mineral comprising at least one component (A) selected from the group consisting of anionic (A1) surfactants, cationic (A2) surfactants, ampholytic (A3) surfactants and non-ionic surfactants (A4), and at least one component (B) selected from the group consisting of alkoxylated polyalkyleneimine (B1) and alkoxylated hexamethylene diamine (B2). 1. A composition for the beneficiation of a mineral , wherein the composition comprises:A. at least one component (A), andB. at least one component (B),wherein the at least one component (A) is selected from the group consisting of anionic surfactants (A1), cationic surfactants (A2), ampholytic surfactants (A3) and non-ionic surfactants (A4), andthe at least one component (B) comprises a polymer selected from the group consisting of alkoxylated polyalkyleneimine (B1) and alkoxylated hexamethylene diamine (B2).3. The composition according to claim 1 , wherein the anionic surfactants (A1) are selected from the group consisting of fatty acids claim 1 , alkyl sulfates claim 1 , alkyl sulfosuccinates claim 1 , alkyl sulfosuccinamates claim 1 , acyl sarcosides claim 1 , N-acylaminoacids claim 1 , alkyl benzene sulfonates claim 1 , alkyl sulfonates claim 1 , petroleum sulfonates claim 1 , acyl lactylates and salts thereof.4. The composition according to claim 3 , wherein the fatty acid is selected from the group consisting of saturated or unsaturated C-Cfatty acids and mixtures thereof claim 3 , salts of saturated or unsaturated C-Cfatty acids and mixtures thereof claim 3 , and condensation products of saturated or unsaturated C-Cfatty acids and mixtures thereof.5. The composition according to claim 4 , wherein the saturated or unsaturated C-Cfatty acids and mixtures thereof are selected from the group consisting of octanoic acid claim 4 , nonanoic acid claim 4 , decanoic acid claim 4 , undecanoic acid claim 4 , dodecanoic acid claim 4 , ...

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Номер записи: 43
27-05-2021 дата публикации

SULFONATED MODIFIERS FOR FROTH FLOTATION

Номер: US20210155791A1
Автор: "OBrien Kevin", Hay Daniel N.T., Liu Jianjun, Wiatr Paul
Принадлежит:

Improved sparge compositions for reverse froth flotation separation and uses thereof, and methods of reverse froth flotation are described. The sparge compositions comprise sulfonated polymeric modifiers which can act as dispersants and depressants, and the compositions are suitably used in the reverse froth flotation of particulate material containing ultrafine particles. For example, the compositions and methods can be used in the separation of phosphate beneficiary from ores comprising phosphates, dolomite, calcite, clay, silica, silicates, carbonates, and mixtures thereof. 2. The sparge composition of claim 1 , wherein the gangue comprises a silicate claim 1 , silica claim 1 , a carbonate claim 1 , or any combination thereof.3. The sparge composition of claim 1 , wherein the sparge composition further comprises a sulfonated lignin claim 1 , a sulfonated starch claim 1 , a sulfonated cellulose claim 1 , a sulfonated guar gum claim 1 , a sulfonated xanthan gum claim 1 , or any combination thereof.4. The sparge composition of claim 1 , wherein the sulfonated polymer has a weight average molecular weight of from about 300 g/mole to about 100 claim 1 ,000 g/mole.5. The sparge composition of claim 1 , wherein the sulfonated polymer further comprises a residue of acrylic acid claim 1 , methacrylic acid claim 1 , acrylamide claim 1 , vinyl alcohol claim 1 , maleic acid claim 1 , a maleic acid ester claim 1 , or any combination thereof.6. The sparge composition of claim 1 , wherein the phosphate beneficiary comprises an apatite.7. The sparge composition of claim 1 , the sparge composition further comprising phosphoric acid.8. The sparge composition of claim 1 , the sparge composition further comprising a pH adjusting agent claim 1 , wherein the pH of the sparge composition further comprising the pH adjusting agent is from about 4 to about 7.9. A method of reverse froth flotation comprising: (i) a medium,', '(ii) a phosphate ore comprising a phosphate beneficiary and a ...

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Номер записи: 44
12-05-2016 дата публикации

The Synthesis of New Anionic Surfactants and Their Use as Collectors in Froth Flotation of Non-Sulphidic Ores

Номер: US20160129456A1
Автор: Klingberg Anders, SMOLKO-SCHVARZMAYR Natalija
Принадлежит:

The present invention relates to a compound obtainable by reacting an N-acyl neutral amino acid or a salt thereof, or an N-acyl neutral amino acid oligopeptide or a salt thereof with a monohydroxy monocarboxylic acid or a salt thereof. This compound is useful as a collector in a process for froth flotation of non-sulfidic ores, especially phosphate ores. The invention also relates to a method which comprises the steps of a) conditioning a pulped phosphate ore, wherein the phosphate ore comprises a calcium phosphate mineral or a mixture of such minerals, and gangue minerals, with an effective amount of a calcium phosphate mineral collector reagent, which is the above-mentioned compound, and optionally other flotation aids and b) performing a froth flotation process to recover the calcium phosphate mineral(s). 1. A compound obtainable by reacting an N-acyl neutral amino acid or a salt thereof , or an N-acyl neutral amino acid oligopeptide or a salt thereof with a monohydroxy monocarboxylic acid or a salt thereof.2. A compound according to claim 1 , where the neutral amino acid is selected from the group consisting of glycine claim 1 , alanine claim 1 , sarcosine claim 1 , valine claim 1 , leucine and isoleucine.3. A compound according to where the N-acyl group is a group R—(C═O)— where R is a hydrocarbyl group having from 7 to 23 carbon atoms claim 1 , optionally substituted.4. A compound according to claim 1 , where the monohydroxy monocarboxylic acid is selected from the group consisting of lactic acid and glycolic acid.6. A composition comprising a{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a) compound according to ,'}b) an N-acyl neutral amino acid or a salt thereof, andc) a fatty acid RCOOH, where R is a hydrocarbyl group having from 7 to 23 carbon atoms, optionally substituted, or a salt thereof.7. A composition according to wherein a) is present in an amount of 1-20 mol % claim 6 , b) is present in an amount of 30-60 mol % and c) is present in an amount ...

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Номер записи: 45
11-05-2017 дата публикации

Collector Compositions and Methods of Using Thereof

Номер: US20170128955A1
Автор: Heebner Gerald W., Nelson Lloyd A.
Принадлежит: Arizona Chemical Company, LLC

A collector composition comprising (a) refined tall oil wherein the refined tall oil is any tall oil that has been subjected to one or more refining or processing steps that results in an increase in acid value; and (b) a fatty acid wherein the refined tall oil has an acid value of at least 90 mg KOH/g and a weight average molecular weight of at least 750 g/mol. A mineral slurry comprising (a) an ore comprising a mineral of interest; (b) a collector composition comprising (i) a refined tall oil; and (ii) a fatty acid; and (c) a liquid. A method for the beneficiation of an ore, the method comprising (a) preparing a slurry comprising the ore dispersed in a liquid; (b) contacting the slurry with a collector composition comprising a refined tall oil; and (c) recovering a beneficiated ore. 1. A collector composition comprising:(a) refined tall oil wherein the refined tall oil is any tall oil that has been subjected to one or more refining or processing steps that results in an increase in acid value; and(b) a fatty acid;wherein the refined tall oil has an acid value of at least 90 mg KOH/g and a weight average molecular weight of at least 750 g/mol;wherein the refined tall oil comprises an ester content of less than 15% by weight, based on the weight of the refined tall oil and a polymeric acid content of at least 20% by weight, based on the weight of the refined tall oil.2. The composition of claim 1 , wherein the refined tall oil has a weight average molecular weight of from 750 g/mol to 1300 g/mol.3. The composition of claim 1 , wherein the refined tall oil comprises at least 40% by weight fatty acids claim 1 , rosin acids claim 1 , and fatty acid esters claim 1 , based on the weight of the refined tall oil.4. The composition of claim 1 , wherein the refined tall oil comprises at least 4.5% by weight linoleic acid and at least 7.5% by weight oleic acid claim 1 , based on the weight of the refined tall oil.5. The composition of claim 1 , wherein the refined tall oil is ...

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Номер записи: 46
02-05-2019 дата публикации

REAGENT SCHEME FOR SEDIMENTARY PHOSPHATE FLOTATION

Номер: US20190126291A1
Автор: Gu Zhengxing, Wang Guoxin, Xiong Yu
Принадлежит: Arr-Maz Products, L.P.

A process of phosphate flotation comprising: pulping phosphate ore with water to about 55% to 75% solids to produce an ore slurry; conditioning the ore slurry with a new reagent scheme to produce a conditioned slurry; subjecting the conditioned slurry to flotation to produce an underflow and an overflow; and collecting the overflow as phosphate concentrate. The new reagent scheme may comprise a combination of fatty acid, fuel oil, and fatty acid soap, and may not comprise a pH modifier. The process may also work effectively at a lower percent solids than conventional reagent schemes. 1. A process of phosphate flotation comprising:pulping phosphate ore with water to about 55% to 75% solids to produce an ore slurry;conditioning the ore slurry with a reagent scheme to produce a conditioned slurry, where the reagent scheme comprises a combination of fatty acid, fuel oil, and fatty acid soap and does not comprise a pH modifier;subjecting the conditioned slurry to flotation to produce an underflow and an overflow; andcollecting the overflow as phosphate concentrate.2. The process of where the conditioning step takes place at a pH of 7 to 8.3. The process of where the pH of the ore slurry and the pH of the conditioned slurry are not modified with a pH modifier.4. The process of further comprising diluting the conditioned slurry with plant water prior to flotation.5. The process of where the flotation step is the only flotation performed prior to collecting the phosphate concentrate for coarse flotation feed.6. The process of where the process does not comprise a second flotation step for coarse flotation feed.7. The process of where the reagent scheme does not comprise a depressant to improve flotation selectivity. This application is based on and claims priority to U.S. Provisional Patent Application No. 62/580,854 filed Nov. 2, 2017.This invention relates generally to a process of froth flotation, and more particularly, but not by way of limitation, to a sedimentary ...

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Номер записи: 47
30-04-2020 дата публикации

COLLECTORS FOR TREATING TAILINGS

Номер: US20200129991A1
Автор: LORENTZ JAMES, SIMAN RON, YUAN SIMON
Принадлежит:

A process for treating and dewatering tailings comprising fine clay minerals, fine rock-forming minerals and water is provided, comprising treating the tailings with a sufficient amount of a collector to modify the surface properties of both the fine clays and rock-forming minerals; subjecting the treated tailings to froth flotation to form a fine clays and rock-forming minerals froth layer; and recovering the froth layer and subjecting it to dewatering. 1. A process for treating and dewatering tailings comprising fine clay minerals , fine rock-forming minerals and water , comprising:(a) treating the tailings with a sufficient amount of a collector to modify the surface properties of both the fine clays and rock-forming minerals;(b) subjecting the treated tailings froth flotation to form a fine clays and rock-forming minerals froth layer; and(c) recovering the froth layer and subjecting it to dewatering.2. The process as claimed in claim 1 , wherein the froth layer is dewatered by drainage and air drying.3. The process as claimed in claim 1 , wherein the collector is a quaternary amine claim 1 , an ether amine or an ether diamine.4. The process as claimed in claim 1 , further comprising pre-treating the tailings with a flocculant claim 1 , a coagulant or both prior to treatment with the collector.5. The process as claimed in claim 4 , wherein the flocculant is an anionic polyacylamide or a cationic polymer.6. The process as claimed in claim 4 , wherein the coagulant is polyaluminum chloride.7. The process as claimed in claim 1 , wherein the froth later is dewatered by liquid solids separation in a gravity separator claim 1 , a thickener claim 1 , a centrifuge or a settling basin.8. The process as claimed in claim 1 , wherein the tailings is a fluid fine tailings.9. The process as claimed in claim 1 , wherein the tailings are fine tailings produced during bitumen extraction of oil sands.10. The process as claimed in claim 1 , wherein the collector is selected from ...

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Номер записи: 48
10-06-2021 дата публикации

Enchanced system and method for treatment of soil and groundwater contaminated with pfas

Номер: US20210171365A1
Автор: Christopher Nelson
Принадлежит: Eminus LLC

A method and enhancements for the decontamination of water containing one or more PFAS contaminants includes introducing a foaming agent into the water, and injecting a gas through a diffuser and into the water so as to form a plurality of bubbles in the water, the one or more PFAS contaminants accumulating on the plurality of bubbles. The plurality of bubbles is allowed to rise, forming a foam at the surface of the water. The resulting foam is then collected and transported away from the surface of the water, where it condenses into a liquid and is treated to regulatory standards.

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Номер записи: 49
10-06-2021 дата публикации

Sulfonated modifiers for froth flotation

Номер: US20210171759A1
Автор: Daniel N.T. Hay, Jianjun Liu, Kevin O'Brien
Принадлежит: ECOLAB USA INC

Improved sparge compositions for reverse froth flotation separation and uses thereof, and methods of reverse froth flotation are described. The sparge compositions comprise sulfonated polymeric modifiers which can act as dispersants and depressants, and the compositions are suitably used in the reverse froth flotation of particulate material containing ultrafine particles. For example, the compositions and methods can be used in the separation of iron oxide beneficiary from iron ores comprising silica, silicates, and the like.

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Номер записи: 50
25-05-2017 дата публикации

FLOTATION OF SILICATES FROM ORES

Номер: US20170144169A1
Автор: ALBINO Kelly Ivone Pina, DE LIMA Odair Alves
Принадлежит:

The present invention relates to a method for the flotation of silicates from ores in the presence of a collecting agent and an effective amount of a froth modifier/collecting booster comprising at least one of the compounds of general formula I or mixtures thereof: 2. The process of wherein X is an alkyl group containing from 1 to 2 carbon atoms.3. The process of wherein said froth modifier is n claim 1 ,n claim 1 ,n′-trimethyl-n′-tallow alkyltrimethylenediamine.4. The process of wherein said froth modifier is a tertiary alkylamine and is selected from the group consisting of tallow alkyl dimethylamine claim 1 , coco alkyl dimethylamine claim 1 , and mixtures thereof.5. The process of wherein said froth modifier is tallowalkyltriamine.6. The process of wherein the froth modifier is added to a pulp made from the ore in the form of an aqueous mixture. This application is a continuation of U.S. patent application Ser. No. 14/440,982, filed May 6, 2015, which is a national stage filing under 35 U.S.C. §371 of PCT/EP2013/075196, filed Dec. 2, 2013, which claims priority to U.S. Provisional Patent Application No. 61/731,622 filed Nov. 30, 2012, the contents of which are each incorporated herein by reference in their entireties.The present invention relates to the flotation of silicates from ores using tertiary alkylamines, tertiary alkyldiamines, alkyltriamines, and/or alkylamidoamines as froth modifiers and collector booster, particularly when coarse flotation feed is used. As the flotation feed gets coarser, within the limit of the maximum flotation size for each type of ore, the selectivity improvement becomes better, however, froth modification is observed at all particle size range.Calcium carbonate, iron ores and phosphate ores frequently contains a considerable amount of silicate. The presence of silicates is unacceptable in the beneficiation of these ores. It is therefore essential that the silicate content of the enriched mineral be reduced to a considerable ...

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Номер записи: 51
02-06-2016 дата публикации

Method for Improving Rheological Properties of Mineral Slurry

Номер: US20160151791A1
Автор: MARTIKAINEN Mika, Moore Lucas R.
Принадлежит:

A method for improving the rheological properties of mineral slurry comprising adding a copolymeric dispersing agent to the slurry to disperse silicate minerals. Also disclosed is a method for flotating mineral slurry. 1. A method for improving rheological properties of mineral slurry comprising adding a copolymeric dispersing agent to the slurry to disperse silicate minerals.2. The method of claim 1 , wherein the silicate mineral is magnesium silicate.3. The method of claim 1 , wherein the silicate mineral is serpentine.4. The method of claim 1 , wherein the rheological properties comprise the viscosity of the slurry.5. The method of any of the - claim 1 , wherein the copolymeric dispersing agent is a copolymer of acrylic acid and 2-acrylamido-2-methyl propane sulfonic acid.6. The method of claim 5 , wherein the copolymer has a molecular weight of 9000-20000 Daltons.7. The method of claim 5 , wherein said copolymer has a molecular weight of 15000-20000 Daltons.8. The method of any of the - claim 5 , wherein the ratio of acrylic acid to 2-acrylamido-2-methyl propane sulfonic acid is in the range of 70:30 to 50:50 (w/w).9. The method of any of the - claim 5 , wherein the ratio of acrylic acid to 2-acrylamido-2-methyl propane sulfonic acid is about 60:40 (w/w).10. The method of any of the - claim 5 , wherein the copolymeric dispersing agent is a copolymer of acrylic acid and hydroxyethyl methacrylate.11. The method of claim 10 , wherein the copolymer has a molecular weight of 6000-14000 Daltons.12. The method of or claim 10 , wherein the ratio of acrylic acid to hydroxyethyl methacrylate may be in the range of 80:20 to 60:40 (w/w).13. The method of or claim 10 , wherein the ratio of acrylic acid to hydroxyethyl methacrylate is about 70:30 (w/w).14. The method of any of the - claim 10 , wherein the copolymeric dispersing agent is a copolymer of acrylic acid and methacrylic acid.15. The method of claim 14 , wherein the copolymer has a molecular weight of 4000-7000 ...

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Номер записи: 52
15-09-2022 дата публикации

Complex depressant for controlling zinc and iron in polymetallic-ore flotation, production process and application as a substitute for zinc sulfates and copper sulfates

Номер: US20220288605A1
Автор: Felipe José Rey Bustamante
Принадлежит: Individual

This proposed invention consists of a process for elaborating a depressant agent, which includes, by weight percentage, dissolving 1-40% humic acid, or humic acid derivatives, in 50-99% water at a temperature between 15-30° C. and solubilizing it by adding 0-10% potassium hydroxide; the temperature will rise due to the solvation of potassium hydroxide (30-45° C.); leaving to react and homogenize for 20-60 minutes; causing the latter product to react with 0.1-15% of fulvic acid to generate a product that controls zinc and iron during flotation. The purpose of this invention is to fully replace zinc sulfate, reducing the dosage of the replacement depressant agent by up to 20 times less, furthermore reducing the amount of CuSO4 used in the flotation process, among other improvements.

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Номер записи: 53
23-05-2019 дата публикации

FLOTATION AGENT OF THIOL ETHER STRUCTURE

Номер: US20190151860A1
Автор: Monguillon Bernard
Принадлежит:

The invention relates to a flotation agent of formula (I): 2. The flotation agent according to claim 1 , wherein n is an integer between 1 to and 4 claim 1 , limits inclusive.3. The flotation agent according to claim 1 , wherein m is an integer between 2 and 5 claim 1 , limits inclusive.4. The flotation agent according to claim 1 , wherein R claim 1 , R′ and R″ claim 1 , which may be identical or different claim 1 , are each independently selected from a hydrogen atom claim 1 , a methyl group claim 1 , an ethyl group claim 1 , a propyl group claim 1 , a butyl group claim 1 , or isomers thereof.5. The flotation agent according to claim 1 , wherein A is selected from formula (II) or formula (IV).6. The flotation agent according to claim 1 , wherein Xis selected from a hydrogen atom or an alkali metal.7. The flotation agent according to claim 6 , wherein Xis a hydrogen atom.8. The flotation agent according to claim 1 , wherein Xis an alkali metal.9. The flotation agent according to claim 1 , wherein the groups Yand Yare hydrogen atoms.10. The flotation agent according to claim 1 , wherein the flotation agent is 1 claim 1 ,8-dimercapto-3 claim 1 ,6-dioxaoctane.11. A composition comprising at least one flotation agent according to .12. (canceled)13. (canceled)14. A method for flotation recovery of metal compounds contained in ores claim 1 , comprising a step of introducing at least one flotation agent according to into a flotation cell containing water and a mixture of ores to be separated.15. A method for flotation recovery of metal compounds contained in ores claim 11 , comprising a step of introducing at least one composition according to into a flotation cell containing water and a mixture of ores to be separated.16. The flotation agent according to claim 1 , wherein n is an integer between 1 and 3 claim 1 , limits inclusive.17. The flotation agent according to claim 1 , wherein A corresponds to formula (II).18. The flotation agent according to claim 1 , wherein Xis ...

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Номер записи: 54
14-05-2020 дата публикации

ALKYLATED TRIPHENYL PHOSPHOROTHIONATES AS SELECTIVE METAL SULPHIDE COLLECTORS

Номер: US20200147619A1
Автор: CHIPFUNHU Daniel, Dickie Scott Alexander, Michailovski Alexej, Villanueva Berindoague Adrian Mauricio
Принадлежит: BASF SE

The present invention is directed to a method for selectively recovering a sulphide mineral from an ore applying a collector being an alkylated triphenyl phosphorothionate. Further, the present invention is directed to the use of said alkylated triphenyl phosphorothionates to separate a target mineral from iron sulphide and/or silicate gangue. 1. A method for selectively recovering a sulphide mineral from an ore , the method comprisingi) grinding the ore to obtain a ground ore,ii) preparing a pulp of the ground ore,iii) adding at least one collector comprising an alkylated triphenyl phosphorothionate to the pulp, andiv) subjecting the pulp containing the collector to froth flotation.2. The method according to claim 1 , wherein the ore comprises iron sulphide gangue and/or silicate gangue.6. The method according to claim 3 , wherein R claim 3 , Rand Rare phenyl substituted with at least one linear or branched C-Calkyl.10. The method according to claim 9 , wherein Ris methyl claim 9 , ethyl claim 9 , n-propyl claim 9 , iso-propyl claim 9 , n-butyl claim 9 , sec-butyl claim 9 , tert-butyl claim 9 , n-pentyl claim 9 , 1-methylbutyl claim 9 , n-hexyl claim 9 , 1-methylpentyl claim 9 , n-heptyl claim 9 , 1-methylhexyl claim 9 , n-ocyl claim 9 , n-nonyl claim 9 , iso-nonyl n-decyl claim 9 , n-dodecyl and/or iso-dodecyl.12. The method according to claim 1 , wherein the at least one collector further comprises at least one linear or branched C-Calcohol.13. The method according to claim 12 , wherein the at least one linear or branched C-Calcohol is selected from the group consisting of 1-butanol claim 12 , isononanol claim 12 , 2-ethylhexanol claim 12 , 2-propylheptanol claim 12 , and a mixture thereof.14. The method according to claim 1 , wherein the at least one collector further comprises a surfactant.16. The method according to claim 1 , wherein the pulp containing the collector obtained in iii) has a pH value in the range of 8 to 12.17. The method according to claim 1 , ...

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Номер записи: 55
14-05-2020 дата публикации

System And Method Of Concentrating Niobium Ore

Номер: US20200147620A1
Автор: MERRIAM Keith, ROTZINGER Robert
Принадлежит: Aley Corporation

Methods for niobium concentration from a carbonatite host rock are presented. A basic process for niobium mineral concentration involves performing niobium mineral flotation, on a sufficiently liberated ore slurry, using at one least aromatic hydroxamate collector; and at least one lead salt as a performance modifier. A more optimized process further includes dispersion. A further optimized process includes: magnetic separation, dispersion, sulphide removal, fine suspended particle removal, and niobium cleaner flotation stages. The use of one of number of tested lead salts during flotation improves the yield, and lowers the cost as a significantly lower amount of the collector is required. The process is useful for recovering a variety of species of niobium minerals such as fersmite, pyrochlore, columbite, fergusonite, niobium-containing rutile, and niobium-containing ilmenite. 1. A process for niobium mineral concentration comprising performing niobium mineral flotation , on a sufficiently liberated ore slurry , using:at least one aromatic hydroxamate collector; andat least one lead salt as a performance modifier.2. The process of claim 1 , wherein:the at least one aromatic hydroxamate collector is selected from the group consisting of: benzohydroxamic acid, naphthenic hydroxamic acid, and salicylic hydroxamic acid; andthe at least one lead salt is selected from the group consisting of: lead nitrate, lead acetate, lead chloride, lead formate, lead citrate, and lead hydroxide.3. The process of claim 1 , wherein the aromatic hydroxamate collector is benzohydroxamic acid.4. The process of claim 1 , wherein the aromatic hydroxamate collector is naphthenic hydroxamic acid.5. The process of claim 1 , wherein the aromatic hydroxamate collector is salicylic hydroxamic acid.6. The process of claim 1 , wherein the lead salt is lead nitrate.7. The process of claim 1 , wherein the lead salt is lead acetate.8. The process of claim 1 , wherein the lead salt is lead chloride.9. ...

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Номер записи: 56
16-06-2016 дата публикации

METHOD FOR RECOVERING A COPPER SULFIDE FROM AN ORE CONTAINING AN IRON SULFIDE

Номер: US20160167060A1
Автор: Arnold Gerhard, Hamann Ingo, Hitchiner Alan
Принадлежит: EVONIK DEGUSSA GmbH

In a method for recovering a copper sulfide concentrate by froth flotation from an ore containing an iron sulfide, hydrogen peroxide is added to the conditioned mineral pulp before or during flotation, a concentration of dissolved oxygen is determined in the mineral pulp after addition of hydrogen peroxide and the amount of hydrogen peroxide added is adjusted to maintain a concentration of dissolved oxygen of from 1 to 5 times a predetermined target concentration, in order to adjust the amount of hydrogen peroxide to changes in ore composition. 1. A method for recovering a copper sulfide from an ore containing an iron sulfide , comprising the steps of:a) wet grinding the ore with grinding media to form a mineral pulp,b) conditioning the mineral pulp with a collector compound to form a conditioned mineral pulp, andc) froth flotation of the conditioned mineral pulp to form a froth and a flotation tailing, separating the froth from the flotation tailing to recover a copper sulfide concentrate,wherein hydrogen peroxide is added to the conditioned mineral pulp between steps b) and c) or during step c), a concentration of dissolved oxygen is determined in the mineral pulp after addition of hydrogen peroxide and the amount of hydrogen peroxide added is adjusted to maintain a concentration of dissolved oxygen of from 1 to 5 times a predetermined target concentration.2. The method of claim 1 , wherein the target concentration of dissolved oxygen is determined in a series of preliminary experiments in which the amount of added hydrogen peroxide is varied claim 1 , the concentration of dissolved oxygen is determined in the mineral pulp after addition of hydrogen peroxide claim 1 , the concentration of dissolved oxygen is plotted over the amount of added hydrogen peroxide to give a curve having an inflection point claim 1 , a critical concentration of dissolved oxygen is determined as the concentration of dissolved oxygen at the inflection point claim 1 , and the target ...

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Номер записи: 57
01-07-2021 дата публикации

PROCESS TO TREAT METAL OR MINERAL ORES AND COLLECTOR COMPOSITION THEREFOR

Номер: US20210197210A1
Автор: BAAN Willem Hendrikus, Lewis Andrew Clist
Принадлежит: NOURYON CHEMICALS INTERNATIONAL B.V.

A process to treat metal or mineral ores is disclosed. The metal or mineral ore is a metallic sulphide ore including copper, gold, platinum, silver, nickel, molybdenum, arsenic sulphides, cobalt, zinc, lead, tin, antimony, or combinations thereof with a collector composition including a dimeric fatty nitrile. The dimeric fatty nitrile is prepared by a process including reacting a dimer fatty acid with ammonia at a temperature between about 200° C. and about 400° C. to form a dimeric amide and removing water from the dimeric amide to form the dimeric nitrile. The present disclosure also provides a collector composition containing the dimeric fatty nitrile and at least one further collector or frother compound. 1. A method to treat metal or mineral ores , wherein the metal or mineral ore is a metallic sulphide ore including copper , gold , platinum , silver , nickel , molybdenum , arsenic sulphides , cobalt , zinc , lead , tin , antimony , or combinations thereof with a collector composition comprising a dimeric nitrile , wherein the dimeric nitrile is obtainable by a process comprising:reacting a dimer fatty acid with ammonia at a temperature between about 200° C. and about 400° C. to form a dimeric amide; andremoving water from the dimeric amide to form the dimeric nitrile.2. The method of wherein the dimeric nitrile is obtainable by reacting the dimer fatty acid with the ammonia at a pressure between about 0 kPa and about 507 kPa.3. The method of wherein the dimeric nitrile is obtainable by adding the ammonia to a reaction vessel containing the dimer fatty acid at a rate of about 0.1 moles per hour to about 5 moles per hour.4. The method of wherein the dimeric nitrile is obtainable by reacting the dimer fatty acid with the ammonia in the presence of a metal oxide catalyst.5. The method of wherein the dimeric nitrile is obtainable by using the metal oxide catalyst selected from ZnO claim 4 , CoO claim 4 , and combinations thereof.6. The method of wherein the metal ...

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Номер записи: 58
01-07-2021 дата публикации

BENEFICIATION OF PHOSPHATE FROM PHOSPHATE CONTAINING ORES

Номер: US20210197211A1
Автор: Kuelzer Tamara, Michailovski Alexej, Villanueva Berindoague Adrian Mauricio, VON KROG Sylvia
Принадлежит:

The present invention relates to a collector composition for beneficiation of phosphates from phosphate containing ores comprising at least one component A, at least one component B, and at least one component C, wherein the component A comprises unsaturated fatty acids having 12 to 22 carbon atoms, the component B comprises alkoxylated branched alcohols as non-ionic surfactant which comprise two different types of alkoxy moieties, and the component C comprises sulfur-containing surfactants. The present invention further relates to the use of said collector composition in flotation processes, and to a method for beneficiation of phosphates using said collector composition. 2. A collector composition according to claim 1 , wherein the component A is selected from the group consisting of a fatty acid blend with >90% C- to Cis fatty acids with an unsaturation degree of 0.5 to 3 claim 1 , oleic acid claim 1 , soybean fatty acids claim 1 , tall oil claim 1 , rosins claim 1 , fatty acid peptides of the formula C-i H-iCO—NH—R with R being a residue of natural or artificial amino acids comprising glycine claim 1 , sarcosine or taurine.3. A collector composition according to claim 1 , wherein the alkoxylated branched alcohols of component B are ethoxylated and propoxylated branched alcohols which comprise alcohols having 9 to 18 carbon atoms.4. A collector composition according to claim 1 , wherein the component C is selected from the group consisting of sulfonated fatty acids claim 1 , dialkyl sulfosuccinates claim 1 , di- or tetraalkyl sulfosuccinamates claim 1 , sodium dodecyl sulfate claim 1 , dioctyl sulfosuccinate claim 1 , alkyl ether sulfates claim 1 , alkyl benzenesulfonates claim 1 , alkyl sulfates of the formula CH20S03 with n=12 to 22.5. A collector composition according to claim 1 , wherein the degree of ethoxylation of component B is in the range of 2 to 10 and the degree of propoxylation of component B is in the range of 1 to 10.6. A collector composition ...

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Номер записи: 59
22-06-2017 дата публикации

FROTH FLOTATION WITH ANISOTROPIC PARTICLE COLLECTORS

Номер: US20170173594A1
Автор: Baldauf Julia, Bojovschi Alexe, Mashford Benjamin S., Schieber Christine, Yiapanis George
Принадлежит:

In one example, a method includes providing a pulp composed of a combination of particulate materials including particles of a target material. The pulp is mixed with a collector composed of anisotropic particles having at least two separate spatial domains that have different physiochemical properties, and the mixture of pulp and collector is fed into an aqueous solution containing air bubbles. 1. A method comprising:providing a pulp comprising a combination of particulate materials including particles of a target material;mixing the pulp with a collector comprising anisotropic particles having at least two separate spatial domains that have different physiochemical properties; andfeeding a mixture of the pulp and the collector into an aqueous solution containing air bubbles.2. The method of claim 1 , wherein a first domain of the at least two separate spatial domains is hydrophobic claim 1 , and a second domain of the at least two spatial domains is hydrophilic.3. The method of claim 2 , wherein at least some particles of the anisotropic particles comprise:a plurality of hydrocarbon chains; andfunctional groups borne on a first subset of the plurality of hydrocarbon chains.4. The method of claim 3 , wherein the functional groups selectively adsorb the at least some of the particles to the particles of the target material.5. The method of claim 4 , wherein a mechanism of adsorption that selectively adsorbs the at least some of the particles to the particles of the target material comprises electrostatic interaction.6. The method of claim 4 , wherein a mechanism of adsorption that selectively adsorbs the at least some of the particles to the particles of the target material comprises complexation.7. The method of claim 4 , wherein a mechanism of adsorption that selectively adsorbs the at least some of the particles to the particles of the target material comprises chemical bond formation.8. The method of claim 4 , wherein a mechanism of adsorption that selectively ...

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Номер записи: 60
22-06-2017 дата публикации

A Process for Preparation of High Flash Point Frothing Agent

Номер: US20170173595A1
Автор: Gadhe Ravindra, Pagar Shanul, Srivastava Sangeeta
Принадлежит: Godavari Biorefineries Limited

The present invention discloses a process for preparing high flash point frothing agent by treating an aldehyde with an alcohol in the presence of an acid catalyst at elevated temperature and further adding a carbonate salt to obtain the frothing agent and polymer. 1. A process for preparing a high flash point frothing agent , the process comprising:treating an aldehyde with an alcohol in the presence of an acid catalyst at an elevated temperature to form a mixture; andadding a carbonate salt to the mixture for neutralizing the acid catalyst and to obtain frothing agent and polymer.2. The process as claimed in claim 1 , wherein the temperature is maintained in the range of 75° C. to 80° C.3. The process as claimed in claim 1 , comprising heating the mixture for 3 to 4 hours after adding carbonate salt.4. The process as claimed in comprising distilling the mixture to remove unreacted alcohol and optionally recycling the unreacted alcohol to the step of treating aldehyde with an alcohol in the presence of an acid catalyst.5. The process as claimed in comprising distilling the mixture to obtain pure frothing agent.6. The process as claimed in claim 1 , wherein the crude frothing agent is obtained by fractional distillation.7. The process as claimed in claim 1 , wherein the aldehyde is preferably an α-β unsaturated aldehyde having C-Ccarbon atoms selected from crotonaldehyde claim 1 , 2-ethyl hexenal claim 1 , 2-ethyl crotonaldehyde claim 1 , 2 claim 1 , 4 hexadienal claim 1 , 2 claim 1 ,4 claim 1 ,6 octatrinal or mixture thereof.8. The process as claimed in claim 1 , wherein the alcohol is preferably an aliphatic alcohol having Cto Ccarbon atoms selected from methyl alcohol claim 1 , ethyl alcohol claim 1 , propyl alcohol claim 1 , butyl alcohol claim 1 , hexanol claim 1 , octanol or mixture thereof.9. The process as claimed in claim 1 , wherein the carbonate salt is selected from sodium carbonate claim 1 , calcium carbonate claim 1 , magnesium carbonate or mixture ...

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Номер записи: 61
18-09-2014 дата публикации

Composition and method for improvement in froth flotation

Номер: US20140262974A1
Автор: Dmitri L. Kouznetsov
Принадлежит: ECOLAB USA INC

The invention provides methods and compositions for improving a froth flotation type separation. The method involves adding a hydrocarbon reaction product to slurry to enhance the separation. The method is particularly effective with coal separation because it increases yield without increasing ash content of flotation concentrate.

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Номер записи: 62
06-06-2019 дата публикации

PROCESS FOR THE DEPRESSION OF IRON SULPHIDES AND OTHER DISPOSABLE ELEMENTS IN THE CONCENTRATION OF MINERAL BY FLOTATION AND ELECTROCHEMICAL REACTOR

Номер: US20190169709A1
Автор: LAÍN RODRÍGUEZ Eva Maria
Принадлежит: INFOROCK S.L.

A process for the depression of iron sulphides and other disposable elements in the mineral concentration by flotation and electrochemical reactor. The proposed invention represents a method based on the action of electrodes on the mineral, which can replace, compliment or minimise the consumption of chemical reagents, as well as improving the effect thereof. 1. A process for the depression of iron sulphides and other disposable elements in the flotation of mineral particles in liquid , which after the stages of extraction , crushing , grinding and suspension of the mineral in liquid , is characterised in that at least one sulphide is electrochemically depressed through the application of at least one electric potential.2. The process claim 1 , according to claim 1 , characterised in that at least one iron sulphide or another disposable element is electrochemically depressed through the direct action of at least one electrode claim 1 , with an at least partial direct contact between the electrode and the mineral particles.3. The process claim 1 , according to claim 1 , characterised in that at least one iron sulphide or another disposable element is electrochemically depressed through the indirect action of at least one electrode claim 1 , wherein at least one potential of the electrode is transferred to the mineral particles by means of the at least one mediator claim 1 , typically dissolved in the liquid.4. The process claim 1 , according to claim 1 , characterised in that the at least one potential is lower than the electric potential required to oxidise and/or reduce water.5. The process claim 1 , according to claim 1 , characterised in that the at least one potential of at least one electrode is modulated without altering the pH of the liquid.6. The process claim 5 , according to claim 5 , characterised in that the pH is altered solely at a localised level but not at a macro/general level.7. The process claim 1 , according to claim 1 , characterised in that the ...

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Номер записи: 63
28-05-2020 дата публикации

A VALVE

Номер: US20200164386A1
Автор: Doyle Mark
Принадлежит: Weir Minerals Australia Ltd.

A valve for use in controlling fluid flow in a flotation processing circuit is described, the valve including: a valve body; an inlet to the valve body; an outlet from the valve body; a member which is arranged in use to control fluid flow from the inlet to the outlet; and wherein the valve also comprises a bypass opening which facilitates fluid flow in one or both of two modes: in the first mode from the inlet to the bypass opening; and in the second mode from the bypass opening to the outlet. 115-. (canceled)16. A dart valve for use in controlling fluid flow in a flotation processing circuit , the valve comprising:a valve body;an inlet to the valve body;an outlet from the valve body;a member which is arranged in use to control fluid flow from the inlet to the outlet; and (i) in the first mode from the inlet to the bypass opening; and', '(ii) in the second mode from the bypass opening to the outlet., 'a bypass opening which facilitates fluid flow in one or both of two modes17. The dart valve according to claim 16 , wherein the member is arranged to control fluid flow from the inlet to the bypass opening.18. The dart valve according to claim 16 , further including isolation valves which are associated with each of the outlet claim 16 , inlet claim 16 , and bypass opening.19. The dart valve according to claim 16 , further including a valve seat which cooperates with the member; the valve seat and the member are part of a sub-assembly which is arranged to be withdrawn from the valve body.20. The dart valve according to claim 16 , wherein the valve seat is compressed against the valve body to seal against the valve body by means of a spacing arrangement which extends from the valve seat to an end region of the valve body.21. The dart valve according to claim 16 , wherein the valve member is mounted on a shaft by way of an aperture provided in the valve member which surrounds the shaft and the valve member is assembled onto the shaft by passing the upper end of the ...

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Номер записи: 64
16-07-2015 дата публикации

Depressants for Mineral Ore Flotation

Номер: US20150196926A1
Автор: Langsch Jorge Eduardo, Moore Lucas, Morais Paulo Henrique, Moreira Da Costa Marcelo
Принадлежит:

Depressants comprising one or more types of polysaccharides comprising one or more types of pentosan units are provided. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue, wherein the process comprises carrying out a flotation process in the presence of one or more collecting agents and one or more of the depressants. 1. A depressant comprising one or more types of polysaccharides comprising one or more types of pentosan units.2. The depressant of claim 1 , wherein the one or more types of polysaccharides are derived from plant cell walls or algae.3. The depressant of claim 1 , wherein the one or more types of pentosan units comprise xylan units.4. The depressant of claim 1 , wherein the one or more types of polysaccharides comprise one type of pentosan.5. The depressant of claim 4 , wherein the one type of pentosan is xylan.6. The depressant of claim 5 , wherein the xylan may be extracted from sugar cane bagasse or corn fiber residue with dilute alkaline solutions.7. A composition comprising:a depressant comprising one or more types of polysaccharides comprising one or more types of pentosan units; anda solvent.8. The composition of claim 7 , wherein the solvent is water.9. A process for enriching a desired mineral from an ore comprising the desired mineral and gangue claim 7 , wherein the process comprises carrying out a flotation process in the presence of one or more collecting agents and one or more depressants claim 7 , and wherein at least one of the one or more depressants comprises one or more types of polysaccharides comprising one or more types of pentosan units.10. The process of claim 9 , wherein the desired mineral is an iron-containing mineral.11. The process of claim 9 , wherein the gangue comprises oxides of silica claim 9 , silicates or siliceous materials.12. The process of claim 9 , wherein the flotation process is a reverse cationic flotation process.13. The process of claim 9 , ...

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Номер записи: 65
30-07-2015 дата публикации

MONOTHIOPHOSPHATE CONTAINING COLLECTORS AND METHODS

Номер: US20150209801A1
Автор: Tall Alexander Bradstock
Принадлежит:

Novel collectors in the form of mixtures of one or more monothiophosphates and one or more thionocarbamates, optionally containing other materials useful for enhancing the performance of the collectors, are used in froth flotation processes for the recovery of selected metals or minerals, such as gold, silver, copper, zinc or similar contained in the ore material being treated. Not only to the combinations of monothiophosphates and thionocarbamates produce more efficient collectors which improve the yield and selectivity of the recovery of the metal or mineral from the ore being treated, but the use of the monothiophosphate allows new combinations of collectors to be formed that do not separate on standing thus avoiding the disadvantage of having to stir the collector mixtures immediately prior to use. Specific examples of the monothiophosphates are disclosed. 5. (canceled)6. (canceled)7. (canceled)9. A collector according to in which the collector is a stable mixture that does not separate on standing or when not being stirred.10. A collector according to in which the monothiophosphate is the mono ester or di-ester or the monothiophosphate claim 1 , including the mono-ester and the di-ester of sodium diisobutyl monothiophosphate or isobutylsodium phosphorothiolate.11. (canceled)12. A collector according to in which the substituents represented by any one or more of Rto Rare the same or different and are selected from the group consisting of methyl claim 1 , ethyl claim 1 , n-propyl claim 1 , iso-propyl claim 1 , n-butyl claim 1 , iso-butyl claim 1 , sec-butyl claim 1 , tert-butyl claim 1 , isoamyl claim 1 , n-pentyl claim 1 , iso-pentyl claim 1 , neopentyl claim 1 , n-hexyl claim 1 , n-heptyl claim 1 , n-octyl claim 1 , m-cresyl claim 1 , o-cresyl claim 1 , p-cresyl claim 1 , benzyl groups er and combinations or mixtures of isomers of two or more of the foregoing.13. A collector according to claim 12 , in which the thionocarbamate isAlkyl Alkyl Thionocarbamates, ...

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Номер записи: 66
18-06-2020 дата публикации

INDIRECT FLOTATION PROCESS FOR MANUFACTURING WHITE PIGMENT CONTAINING PRODUCTS

Номер: US20200188935A1
Автор: Gilbert David, Maier Jorg, NIITTI Tomi Matti Juhani, Sötemann Jörg
Принадлежит:

The present invention concerns a process for manufacturing white pigment containing products. The white pigment containing products are obtained from at least one white pigment and impurities containing material via froth flotation. 2. Process according to claim 1 , wherein the process involves an indirect flotation step leading to the formation of a froth containing the impurities and a white pigment bearing phase with the white pigment containing product.3. Process according to claim 1 , wherein the white pigment is a white mineral pigment.4. Process according to claim 1 , wherein the white pigment is an alkaline earth metal carbonate.5. Process according to claim 1 , wherein the white pigment containing material comprises impurities selected from the group consisting of base metal sulphides claim 1 , iron oxides claim 1 , graphite claim 1 , silicates and mixtures thereof.6. Process according to claim 5 , wherein the silicate is selected from the group consisting of quartz claim 5 , mica claim 5 , amphibole claim 5 , feldspar claim 5 , clay mineral and mixtures thereof.7. Process according to claim 5 , wherein the silicate is a white coloured silicate selected from the group consisting of wollastonite claim 5 , kaolin claim 5 , kaolinitic clay claim 5 , montmorillonite claim 5 , talc claim 5 , diatomaceous earth claim 5 , sepiolite and mixtures thereof.8. Process according to claim 1 , wherein the amount of white pigment in the white pigment and impurities containing material of step a) is from 0.1 to 99.9 wt.-% claim 1 , based on the dry weight.9. Process according to claim 1 , wherein the ratio of white pigment:impurities in the white pigment and impurities containing material of step a) is from 0.1:99.9 to 99.9:0.1 claim 1 , based on the dry weight.10. Process according to claim 1 , wherein the white pigment and impurities containing material of step a) has a weight median grain diameter in the range of from 1 to 5 000 μm.12. Process according to claim 1 , ...

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Номер записи: 67
19-07-2018 дата публикации

Foam Prevention In The Reverse Flotation Process For Purifying Calcium Carbonate

Номер: US20180200731A1
Автор: Arias Medina Jorge Antonio, Bartalini Nilson Mar, Da Silva Wagner Claudio, Dilsky Stefan, Duarte Zaira Guimaraes, Oliveira Filho Antonio Pedro, Speck Cassola Monica
Принадлежит:

This invention relates to an composition, comprising 126-. (canceled)27. A process for reversely flotating magnesium silicate minerals from calcium carbonate ore , the process comprising adding a composition comprisingA) at least one quaternary ammonium compound which is a collector for the reverse flotation of magnesium minerals from calcium carbonate,B) at least one antifoam agent, andC) at least one solvent to a flotation cell containing magnesium silicate minerals and calcium carbonate ore, subsequently flowing air through the flotation cell and removing the magnesium silicate minerals with the foam so generated.29. The process according to claim 28 , wherein the total number of carbon atoms contained in R claim 28 , R claim 28 , Rand Ris from 9 to 35.35. The process according to claim 27 , wherein X is chloride.36. The process according to claim 27 , wherein the amount of component A is from 20 to 60 wt.-%.37. The process according to claim 27 , wherein the amount of component B is from 5 to 25 wt.-%.38. The process according to claim 27 , wherein the amount of component C is from 15 to 75 wt.-%.39. The process according to claim 27 , wherein the solvent is selected from the group consisting of water claim 27 , ethanol claim 27 , isopropanol claim 27 , 2-ethylhexanol and paraffin claim 27 , or mixtures thereof.40. The process according to claim 27 , wherein the antifoam agent comprises at least one component selected from the group consisting of insoluble paraffinic and napthenic mineral oils claim 27 , vegetable oils claim 27 , residues from the oxo alcohol synthesis claim 27 , alkylbenzenes claim 27 , and crude oils from the low-temperature carbonization of brown coal or other bituminous materials.42. The process according to claim 27 , wherein the antifoam agent comprises at least one dimethylpolysiloxane having 2 to 2000 siloxane groups.43. The process according to claim 27 , wherein the antifoam agent comprises at least one hydrophobic silica.44. The ...

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Номер записи: 68
27-07-2017 дата публикации

FLOTATION OF SPHALERITE FROM MIXED BASE METAL SULFIDE ORES EITHER WITHOUT OR WITH LARGELY REDUCED AMOUNT OF COPPER SULFATE ADDITION USING 2-(ALKYLAMINO)ETHANETHIOLS AS COLLECTORS

Номер: US20170209873A1
Автор: Nirdosh Inderjit, Ramanathan Natarajan
Принадлежит:

The main objective of the invention was to develop a new flotation collector that could eliminate or reduce the amount of copper sulfate used in the flotation of sphalerite. Different series of collectors such as cupferrons, arylhydroxamic acids and amino mercaptans or amino thiols were synthesized and tested. Amino mercaptans/aminothiols were found to be very effective in floating sphalerite from a lead-zinc ore using only 10-15% of copper sulfate used with conventional xanthate collector. The present invention does not require any alteration in the current mill practices. This warrants only changing the flotation collector in zinc flotation stage from, for example, potassium amyl xanthate (PAX) to the new collector. 3. The method according to wherein x is between 2 and 9.4. The method according to claim 2 , wherein x is 2.5. The method according to claim 2 , wherein x is 5.6. The method according to claim 2 , wherein x is 9.7. The method according to wherein the zinc collector is in the form of a water-soluble salt.8. The method according to wherein the zinc collector is an amine salt.9. The method according to wherein the zinc collector is added in an amount of at least 300 g/tonne of ore.10. The method according to including adjusting the pH of the ground ore solution to below 7 prior to adding the lead collector solution.11. The method according to including adjusting the pH of the ground ore solution to about 6 prior to adding the lead collector solution.12. The method according to including adding copper sulfate in an amount at least 100 g/tonne of ore.15. The use according to wherein x is between 2 and 9.16. The use according to claim 14 , wherein x is 2.17. The use according to claim 14 , wherein x is 5.18. The method according to claim 14 , wherein x is 9. The instant application claims the benefit of U.S. Provisional Patent Application 62/281,872, filed Jan. 22, 2016.The present invention relates to the field of mineral processing. More specifically, the ...

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Номер записи: 69
04-07-2019 дата публикации

METHOD OF PREPARING A WATER IN OIL EMULSION

Номер: US20190201915A1
Автор: Galvin Kevin Patrick, van Netten Kim
Принадлежит:

A method of preparing a water in oil emulsion comprises forming a mixture of oil and emulsifying agent, progressively adding an aqueous salt solution to the mixture and dispersing the aqueous salt solution into the mixture. A concentrated water in oil emulsion is formed with drops of the aqueous salt solution () packed inside the oil solution phase (). The emulsion is added to water and then mixed so that the emulsion absorbs the water. The salt concentration of the emulsion relative to the salt concentration of the water is controlled. Methods of agglomerating fine hydrophobic particles in a slurry using the water in oil emulsion are provided, where the emulsion is added to the slurry and then mixed so that the emulsion absorbs the water in the slurry. The salt concentration of the emulsion relative to the salt concentration of the slurry is controlled. 1. A method of preparing a water in oil emulsion , comprising:forming a mixture of oil and emulsifying agent;progressively adding an aqueous salt solution to said mixture and dispersing said aqueous salt solution into said mixture, thereby forming a concentrated water in oil emulsion with drops of said aqueous salt solution packed inside the oil solution phase;adding said emulsion to water; andmixing said emulsion and said water so that said emulsion absorbs said water; andcontrolling the salt concentration of said emulsion relative to the salt concentration of said water.2. The method of claim 1 , wherein the salt concentration of said aqueous salt solution in said emulsion is greater than the salt concentration of said water.3. The method of claim 1 , wherein the salt concentration of said aqueous salt solution in said emulsion is less than the salt concentration of said water.4. The method of claim 1 , wherein said emulsion forms into smaller portions as a result of mixing said water and said emulsion.5. The method of claim 1 , wherein the salt concentration of said aqueous salt solution in said emulsion is below ...

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Номер записи: 70
11-07-2019 дата публикации

Method for recovering precious metal

Номер: US20190211421A1
Автор: Kaj Jansson, Mikko Ruonala, Tuukka Kotiranta
Принадлежит: Outotec Finland Oy

A method for recovering at least one precious metal from an aqueous solution containing the metal and particularly to recovery of silver and optionally one or more other precious metals from overflow of a sedimentation unit such as a thickener, a clarifier or a pond includes subjecting the aqueous solution to a micro and/or nanobubble flotation, wherein the pH of the aqueous solution is at most 1.5.

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Номер записи: 71
18-07-2019 дата публикации

METHOD OF USING FLOTATION COLLECTOR CONTAINING AZOLETHIONE STRUCTURE

Номер: US20190217310A1
Автор: Hu Zhe, HUANG Yaoguo, Liu Guangyi, Liu Jun, MA Longqun, NIU Xiaoxue, ZHONG Hong
Принадлежит: CENTRAL SOUTH UNIVERSITY

The present invention relates to an azolethione flotation collector and application thereof. According to the application, an azolethione compound such as a 1,3,4-thiadiazole-2-thione compound, a 1,3,4-oxadiazole-2-thione compound, a 1,2,4-triazole-3-thione compound or a 1,2,4,5-tetrazole-3-thione compound is used as a mineral flotation collector to be applied to ores containing copper, zinc, lead, nickel, cobalt, platinum, palladium, silver or gold minerals to realize flotation recovery of valuable metal minerals. Compared with common flotation collectors in the existing technologies, the flotation collector of the present invention can effectively improve enrichment and recovery of copper, zinc, lead, nickel, cobalt, platinum, palladium, silver or gold minerals. 3. The method of using the flotation collector containing the azolethione structure according to claim 1 , wherein R is a C-Calkane group claim 1 , or a C-Colefinic group claim 1 , or a C-Caryl group.4. The method of using the flotation collector containing the azolethione structure according to claim 2 , wherein R is a C-Calkane group claim 2 , or a C-Colefinic group claim 2 , or a C-Caryl group.5. The method of using the flotation collector containing the azolethione structure according to claim 3 , wherein R is a linear C-Calkane group or a C-Cmonoolefine group.6. The method of using the flotation collector containing the azolethione structure according to claim 4 , wherein R is a linear C-Calkane group or a C-Cmonoolefine group.7. The method of using the flotation collector containing the azolethione structure according to claim 3 , wherein R is propyl claim 3 , pentyl claim 3 , hexyl claim 3 , heptyl claim 3 , nonyl claim 3 , n-hendecyl claim 3 , n-tridecyl claim 3 , n-pentadecyl claim 3 , n-heptadecyl or 8-heptadecenyl.8. The method of using the flotation collector containing the azolethione structure according to claim 4 , wherein R is propyl claim 4 , pentyl claim 4 , hexyl claim 4 , heptyl claim 4 ...

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Номер записи: 72
18-07-2019 дата публикации

Cationic polymer selective depressants and use thereof in mineral ore purification methods

Номер: US20190217311A1
Автор: Marcelo Moreira Costa, Sergio Cabo, Xihui YIN
Принадлежит: KEMIRA OYJ

The present embodiments generally relate to a technology for improving Cu/Mo grade by the addition of cationic polymers as selective depressants for acid insoluble matters, e.g., silicates and/or clays, in the flotation circuit. Various types of cationic polymers are demonstrated to be effective depressants including polyamine, polyDADMAC, and cationic polyacrylamide. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue, wherein the process comprises carrying out a flotation process in the presence of one or more cationic polymer depressants.

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Номер записи: 73
19-08-2021 дата публикации

Use Of Polyols For Improving A Process For Reverse Froth Flotation Of Iron Ore

Номер: US20210252525A1
Автор: BICALHO Leandro Seixas, Da Silva Wagner Claudio, KRULL Matthias, RHODES Valdilene
Принадлежит: CLARIANT INTERNATIONAL LTD.

This invention relates to use of a water-miscible polyhydric alcohol having two or three hydroxyl groups for improving the collector performance of a collector composition for the reverse iron ore flotation comprising at least one alkyl ether amine of formula (I) and/or alkyl ether diamine of formula (II) 123.-. (canceled)25. The process according to claim 24 , wherein the component A and component B are added to a finely ground iron ore combined with water or a suitable aqueous liquid and mixed using mechanical mixing means to form a homogenous slurry called pulp claim 24 , in a total amount of 1 to 1 claim 24 ,000 g/to in respect to the amount of iron ore present.26. The process according to claim 24 , wherein the iron ore is selected from the group consisting of magnetite claim 24 , hematite and goethite.27. The process according to claim 25 , wherein a dispersant claim 25 , a chain extender claim 25 , a frother claim 25 , a defoamer claim 25 , a co-collector and/or a depressant is present in the pulp.28. The process according to claim 24 , wherein Rand Rindependently from each other comprise 7 to 18 carbon atoms.29. The process according to claim 24 , wherein component A) is an alkyl ether amine of formula (I).30. The process according to claim 24 , wherein component A) is an alkyl ether diamine of formula (II).31. The process according to claim 24 , wherein component A) is a mixture of an alkyl ether amine of formula (I) and an alkyl ether diamine of formula (II).32. The process according to claim 24 , wherein Rand/or Rindependently from each other are aliphatic hydrocarbyl residues.33. The process according to claim 24 , wherein Rand/or Rare linear or branched hydrocarbyl residues.34. The process according to claim 24 , wherein the alkyl ether amine (I) and/or the alkyl ether diamine (II) is derived from a branched synthetic alcohol.35. The process according to claim 24 , wherein A is a group of the formula —CH—CH— or of the formula —CH—CH—CH—.36. The process ...

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Номер записи: 74
19-08-2021 дата публикации

HYDROXIMIC ACID-METAL HYDROXIDE COORDINATION COMPLEX AND PREPARATION AND APPLICATION THEREOF

Номер: US20210253620A1
Автор: HAN Haisheng, HU Yuehua, Sun Wei, Wang Jianjun, WANG Ruolin, Wei Zhao
Принадлежит: CENTRAL SOUTH UNIVERSITY

A hydroximic acid-metal hydroxide coordination complex and preparation and application thereof are disclosed. The hydroximic acid-metal hydroxide coordination complex is formed by a coordination of hydroximic acid with divalent or higher valent metal ions under an alkaline condition. The hydroximic acid-metal hydroxide coordination complex has a strong selectivity and a strong collection ability for metal oxide minerals such as tungsten-containing minerals, ilmenite, rutile, cassiterite, and rare earth. The preparation method is simple and low in costs, and is beneficial to industrialized production. 2. The hydroximic acid-metal hydroxide coordination complex according to claim 1 , wherein R is an aliphatic hydrocarbon radical or an aryl.3. The hydroximic acid-metal hydroxide coordination complex according to claim 2 , wherein R is a C-Calkyl claim 2 , a C-Cunsaturated aliphatic hydrocarbon radical claim 2 , phenyl claim 2 , or substituted phenyl.4. The hydroximic acid-metal hydroxide coordination complex according to claim 3 , wherein R is the phenyl.5. The hydroximic acid-metal hydroxide coordination complex according to claim 1 , wherein the divalent or higher valent metal ions comprise at least one of Pb claim 1 , Ca claim 1 , Mn claim 1 , Cu claim 1 , Fe claim 1 , and Al.6. The hydroximic acid-metal hydroxide coordination complex according to claim 5 , wherein the divalent metal ions are Pb.7. The hydroximic acid-metal hydroxide coordination complex according to claim 1 , wherein a coordination mole ratio of the divalent or higher valent metal ions to the hydroximic acid is (1-4):(1-5).8. The hydroximic acid-metal hydroxide coordination complex according to claim 7 , wherein the coordination mole ratio of the divalent or higher valent metal ions to the hydroximic acid is (1-2):(1-3).9. The hydroximic acid-metal hydroxide coordination complex according to claim 1 , wherein a pH value of the alkaline condition is 8-11.10. The hydroximic acid-metal hydroxide ...

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Номер записи: 75
16-07-2020 дата публикации

PROCESS TO TREAT PHOSPHATE ORES

Номер: US20200222914A1
Автор: "KLEBERGER HELLSTRÖM Åsa Helen Jeanette", EKEROTH Johan, LJUNGDAHL Göran Thomas, SMOLKO-SCHVARZMAYR Natalija, SVENSSON Emelie
Принадлежит:

The present invention relates to a process for treating non-sulfidic ores with a collector composition containing a primary and a secondary collector, wherein the primary collector is selected from the group of amphoteric and anionic surface active compounds and the secondary collector is an ethoxylated fatty acid wherein the average degree of ethoxylation is higher than 0 and less than 2, to collector compositions suitable for use in the above process, and to pulp comprising such collector compositions. 1. Process for treating non-sulfidic ores with a collector composition containing a primary and a secondary collector , containing between 3 and 60 wt % of secondary collector and between 40 and 97 wt % of primary collector , the wt % being based on total collector components , wherein the primary collector is selected from the group of amphoteric and anionic surface-active compounds and the secondary collector is an ethoxylated fatty acid wherein the average degree of ethoxylation is higher than 0 and less than 2.2. Process of claim 1 , wherein the ethoxylated fatty acid is of the formula{'br': None, 'i': 'n', 'R—C(O)—O-(EO)\u2003\u2003(I),'}wherein R is an alkyl or alkenyl group having 7 to 23 carbon atoms and EO is an ethyleneoxy unit; n is a number of higher than 0.5 and less than 2.3. Process of claim 2 , wherein R is a hydrocarbyl group having 11 to 21 carbon atoms claim 2 , can be linear or branched claim 2 , contain 0 to 4 double bonds and may be substituted with up to 3 hydroxyl substituents.4. Process of claim 1 , wherein the primary collector is an anionic surfactant selected from the group of fatty acids claim 1 , alkyl benzene sulfonates claim 1 , alkyl phosphates claim 1 , alkyl sulfates claim 1 , alkyl sulfosuccinamates claim 1 , alkyl sulfosuccinates claim 1 , alkyl lactylates claim 1 , alkyl hydroxamates claim 1 , N-acyl neutral amino acid claim 1 , like N-acyl derivatives of sarcosine or N-acyl derivatives of glycine claim 1 , or mixtures thereof.6 ...

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Номер записи: 76
06-11-2014 дата публикации

FLOTATION MACHINE, FROTH RECOVERY APPARATUS, AND METHOD FOR RECOVERING MATERIAL

Номер: US20140326643A1
Автор: Olson Timothy J., Rodrigues Silva Ronney Rogerio
Принадлежит: FLSMIDTH A/S

At least one froth receiving device may be positioned in a slurry retained in a tank of a flotation cell of a flotation machine. Each of the froth receiving devices may be positioned adjacent to froth formed in the slurry by being positioned in the tank at a height that positions the froth receiving device in the froth or near the froth. Each froth receiving device may receive froth to extract the froth from the tank. In some embodiments, the extracted froth may be sent to at least one particle separation device so at least a portion of solid material in the froth is separated from liquid of the froth. The separated solid material may be moved to another machine for further processing for recovering the desirable material while any remaining solid material and liquid may be sent to another device for being utilized in further material processing. 1. A flotation machine comprising:at least one flotation cell comprising a tank that is sized to retain a slurry comprised of a liquid mixed with at least one solid material, and a launder configured to receive upper portions of a froth layer that may form on top of the slurry and flow over portions of the tank;at least one froth receiving device that is sized and configured to be positioned in the tank within said froth layer;at least one froth receiving device being configured to lower portions of the froth layer which are deeper in the tank than said upper portions of the froth layer received by the launder,wherein aid lower portions of the froth layer received by the at least one froth receiving device are moveable from the tank at least one pump which is connected to the at least one froth receiving device and which is configured to generate the pressure or suction needed to pull said lower portions of the froth layer into the at least one froth receiving device, andwherein a depth at which the at least one froth receiving device is positioned in the Tank may be adjusted so as to maintain a relative position of the at ...

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Номер записи: 77
26-08-2021 дата публикации

IRON CHELATORS AS ACTIVATORS IN ALKALINE FLOTATION CIRCUITS

Номер: US20210260603A1
Автор: Barron Dale, CHIPFUNHU Daniel, Dickie Scott Alexander, Michailovski Alexej, Prawira Deris, Reinoso Garcia Marta, Villanueva Berindoague Adrian Mauricio
Принадлежит:

The present invention is directed to a method for selectively recovering a mineral from an ore applying a promoter being a substituted ethylene diamine. Further, the present invention is directed to the use of said substituted polymeric alkylenediamine to separate a target mineral from an ore. 1. A method for selectively recovering a mineral from an ore , comprising:i) grinding the ore,ii) preparing a pulp of the ground ore obtained in step i),iii) adding at least one promoter comprising at least one substituted polymeric alkylene diamine to the pulp obtained in step ii), andiv) subjecting the pulp containing the at least one promoter obtained in step iii) to froth flotation.2. The method according to claim 1 , wherein the pH value of the pulp is adjusted to a range of 8.0 to 12.0.3. The method according to claim 1 , wherein the concentration of the at least one promoter within the pulp is in the range of 5 to 250 g/t.6. The method according to claim 4 , wherein the polyalkyleneimine moiety B or salt thereof is a polyethyleneimine moiety B or salt thereof.9. The method according to claim 4 , wherein Y is a carboxylate (—COOR).10. The method according to claim 9 , wherein the substituents Rare independently from each other H claim 9 , Li claim 9 , Na or K.12. The method according to claim 11 , wherein the substituents Rare independently from each other H or Na.13. The method according to claim 12 , wherein 90 to 100 mol-% of the substituents Rare Na.15. The method according to claim 1 , wherein the pulp further comprises at least one collector.16. The method according to claim 15 , wherein the collector is selected from the group consisting of xanthates claim 15 , dithiophosphates claim 15 , thionocarbamates claim 15 , dithiocarbamates claim 15 , xantoformiates claim 15 , xanthate esters claim 15 , dithiophosphates claim 15 , monothiophosphates claim 15 , dithiophosphinates claim 15 , hydroxamic acids and their alkali metal or ammonium salts claim 15 , alkyl- claim ...

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Номер записи: 78
26-08-2021 дата публикации

METHOD FOR RECOVERING GOLD IN CYANIDE TAILING BY HIERARCHICAL RAMIFIED FLOTATION

Номер: US20210260604A1
Автор: HU Haixiang
Принадлежит:

The present disclosure relates to a method for recovering gold in a cyanide tailing by hierarchical ramified flotation. The present disclosure divides a cyanide tailing into coarse and fine-grained products through screen classification, making preparation for hierarchical ramified flotation. The present disclosure then conducts flotation of the coarse and fine-grained products with suitable process parameters and reagent systems, and selects a suitable coarse-grained flotation product as a carrier of fine-grained flotation to maximize the recovery efficiency of fine grains. The present disclosure improves the overall recovery rate of gold with the hierarchical ramified flotation of coarse and fine grains, series-carrier flotation and combined reagent enhanced flotation. The present disclosure has an advanced process, a good separation effect, and can effectively recover fine-grained gold in the cyanide tailing. 1. A method for recovering gold in a cyanide tailing by hierarchical ramified flotation , comprising the following steps:{'b': 1', '2, 'step 1: screen classification: slurrying a cyanide tailing () with water according to a mass concentration of 30-40%, and then conducting screen classification () through a Taylor standard sieve with a mesh size of 0.038 mm to obtain a coarse-grained product and a fine-grained product;'}{'b': 3', '8, 'step 2: coarse-grained roughing: slurrying the coarse-grained product obtained in step 1 with water according to a mass concentration of 30-35%; then sequentially adding a dispersant (sodium silicate: 500-700 g/t), an activator (copper sulfate: 100-120 g/t), a combined collector (MA-1: 30-40 g/t; ammonium dibutyl dithiophosphate: 15-20 g/t) and a frother (terpenic oil: 10 g/t); conducting coarse-grained roughing () to obtain a coarse-grained roughing concentrate () and a coarse-grained roughing tailing;'}{'b': 4', '9', '9', '3, 'step 3: first coarse-grained scavenging: adding a combined collector (MA-1: 15-20 g/t; ammonium ...

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Номер записи: 79
01-08-2019 дата публикации

PROCESS FOR MANUFACTURING WHITE PIGMENT CONTAINING PRODUCTS

Номер: US20190233652A1
Автор: MAIER Jörg Andreas, Sötemann Jörg
Принадлежит:

A process is described for manufacturing white pigment containing products. The white pigment containing products are obtained from at least one white pigment and impurities containing material via froth flotation. 2. The process according to claim 1 , wherein the process comprises performing an indirect flotation step that forms a froth containing the impurities and a white pigment bearing phase with the white pigment containing product.3. The process according to claim 1 , wherein the white pigment is a white mineral pigment.4. The process according to claim 1 , wherein the white mineral pigment is an alkaline earth metal carbonate.5. The process according to claim 1 , wherein the white pigment containing material comprises impurities selected from the group consisting of iron sulphides claim 1 , iron oxides claim 1 , graphite claim 1 , silicates and mixtures thereof.6. The process according to claim 5 , wherein the silicate is selected from the group consisting of quartz claim 5 , a mica claim 5 , an amphibolite claim 5 , a feldspar claim 5 , a clay mineral and mixtures thereof.7. The process according to claim 5 , wherein the silicate is a white colored silicate selected from the group consisting of wollastonite claim 5 , kaolin claim 5 , kaolinitic clay claim 5 , calcined kaolinitic clay claim 5 , montmorillonite claim 5 , talc claim 5 , diatomaceous earth claim 5 , sepiolite and mixtures thereof.8. The process according to claim 1 , wherein the amount of white pigment in the white pigment and impurities containing material of step a) is from 0.1 to 99.9 wt.-% claim 1 , based on the dry weight.9. The process according to claim 1 , wherein the ratio of white pigment: impurities in the white pigment and impurities containing material of step a) is from 0.1:99.9 to 99.9:0.1 claim 1 , based on the dry weight.10. The process according to claim 1 , wherein the white pigment and impurities containing material of step a) has a weight median grain diameter in the range ...

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Номер записи: 80
09-09-2021 дата публикации

ALKYL THIOETHER ETHYL HYDROXAMIC ACID BENEFICIATION REAGENT AND PREPARATION METHOD AND APPLICATION THEREOF

Номер: US20210276023A1
Автор: Sun Qing, WANG Shuai, ZHONG Hong
Принадлежит: CENTRAL SOUTH UNIVERSITY

An alkyl thioether ethyl hydroxamic acid beneficiation reagent and a preparation method and application thereof are provided. The alkyl thioether ethyl hydroxamic acid molecules have two functional groups, a thioether group and a hydroxamate group. The beneficiation reagent is obtained by esterification of alkyl thioether acetic acid and methanol and then by hydroxamation of hydroxylamine and an alkali. The alkyl thioether ethyl hydroxamic acid beneficiation reagent can be used as a collector for mineral flotation. The preparation method is simple and has a high yield. The thioether and hydroxamate group in the molecules have a synergistic effect and can effectively improve the collection performance. 2. The alkyl thioether ethyl hydroxamic acid beneficiation reagent according to claim 1 , wherein Ris one selected from the group consisting of methyl claim 1 , ethyl claim 1 , propyl claim 1 , isopropyl claim 1 , butyl claim 1 , isobutyl claim 1 , sec-butyl claim 1 , tert-butyl claim 1 , pentyl claim 1 , isopentyl claim 1 , sec-pentyl claim 1 , neopentyl claim 1 , cyclopentyl claim 1 , n-hexyl claim 1 , isohexyl claim 1 , sec-hexyl claim 1 , cyclohexyl claim 1 , heptyl claim 1 , cycloheptyl claim 1 , n-octyl claim 1 , isooctyl claim 1 , sec-octyl claim 1 , cyclooctyl claim 1 , benzyl claim 1 , phenyl claim 1 , p-tert-butyl benzyl and dodecyl.3. The alkyl thioether ethyl hydroxamic acid beneficiation reagent according to claim 2 , wherein Ris the benzyl or the dodecyl.5. The preparation method according to claim 4 , wherein in step (1) claim 4 , a temperature of the esterification reaction is 50-100° C. claim 4 , a reaction time is 1-6 hours claim 4 , a molar ratio of the alkyl thioether acetic acid to the methanol is 1:(1-8) claim 4 , a mass fraction of the concentrated sulfuric acid is 25-50 g/mol claim 4 , and an added amount of the concentrated sulfuric acid is 2.5-5 g/0.1 mol of the alkyl thioether acetic acid.6. The preparation method according to claim 4 , ...

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Номер записи: 81
09-09-2021 дата публикации

COMBINED COLLECTOR FOR ZINC OXIDE ORE FLOTATION AND USE THEREOF

Номер: US20210276024A1
Автор: OU Leming, SHI Qing, ZHANG Guofan
Принадлежит:

The present disclosure discloses a combined collector for zinc oxide ore flotation, including the following components in percentage by mass: 60-95 wt % of a fatty acid, 0-10 wt % of a hydroxamic acid and 5-35 wt % of a mercaptobenzothiazole. In the flotation process of zinc oxide ore, due to the use of the combined collector of the present disclosure, it is not required to deslime. On the premise of ensuring the zinc grade in the zinc concentrate, the flotation recovery rate of the zinc concentrate is improved and the zinc grade of mineral processing tailings is reduced by using the combined collector, thereby reducing the loss of zinc metal. 1. A combined collector for zinc oxide ore flotation , comprising the following components in percentage by mass:60-95 wt % of a fatty acid;0-10 wt % of a hydroximic acid; and5-35 wt % of a mercaptobenzothiazole.2. The combined collector for zinc oxide ore flotation as claimed in claim 1 , wherein the combined collector comprises the following components in percentage by mass:70-85 wt % of a fatty acid;5-10 wt % of a hydroximic acid; and10-20 wt % of a mercaptobenzothiazole.3. The combined collector for zinc oxide ore flotation as claimed in claim 1 , wherein the fatty acid is at least one selected from the group consisting of oleic acid claim 1 , oleate claim 1 , palmitic acid claim 1 , palmitate claim 1 , stearic acid claim 1 , stearate claim 1 , lauric acid claim 1 , laurate claim 1 , palmitic acid and palmitate.4. The combined collector for zinc oxide ore flotation as claimed in claim 1 , wherein the hydroximic acid is at least one selected from the group consisting of benzylhydroximic acid claim 1 , salicylhydroxamic acid and alkyl hydroxamic acid.5. The combined collector for zinc oxide ore flotation as claimed in claim 1 , wherein the mercaptobenzothiazole is at least one selected from the group consisting of 2-mercaptobenzothiazole and sodium 2-mercaptobenzothiazole.6. A use of the combined collector for zinc oxide ore ...

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Номер записи: 82
08-08-2019 дата публикации

PROCESS TO TREAT MAGNETITE ORE AND COLLECTOR COMPOSITION

Номер: US20190240677A1
Автор: Gustafsson Jan Olof, JANIAK John André, NORDBERG Henrik, WIDELL Mikael Ivar
Принадлежит:

The present invention relates to a collector composition containing 80 to 100 wt % of at least one alkylethermonoamine, less than 20 wt % alkyletherdiamine, all wt % based on total weight of all amine components, and wherein the alkylethermonoamine contains between 60 and 93% isotridecyl(C13)etherpropylamine, 5 and 30% of isododecyl(C12)etherpropylamine, 0 and 10% of isoundecyl(C11)-etherpropylamine, 0 and 10% of isodecyl(C10)etherpropylamine, 2 and 10% tetradecyl(C14) etherpropylamine, all % being based on total weight of alkylethermonoamine and the use thereof in a process to treat iron ore. 1. Collector composition containing 80 to 100 wt % of at least one alkylethermonoamine , less than 20 wt % alkyletherdiamine , all wt % based on total weight of all amine components , and wherein the alkylethermonoamine contains between 60 and 93% isotridecyl(C13)etherpropylamine , 5 and 30% of isododecyl(C12)etherpropylamine , 0 and 10% of isoundecyl(C11)etherpropylamine , 0 and 10% of isodecyl(C10)etherpropylamine , 2 and 10% tetradecyl(C14)etherpropylamine , all % being based on total weight of alkylethermonoamine.2. Collector composition of wherein the alkylethermonoamine contains between 60 and 80 wt % isotridecyl(C13)etherpropylamine claim 1 , 10 and 30% of isododecyl(C12)etherpropylamine claim 1 , 0 and 10% of isoundecyl(C11)etherpropylamine claim 1 , 0 and 5% of isodecyl(C10)etherpropylamine claim 1 , 2 and 10% tetradecyl(C14) etherpropylamine claim 1 , all % being based on total weight of alkylethermonoamine.3. Collector composition of wherein the degree of branching of the alkylethermonoamine is between 1.5 and 3.5.4. Collector composition of wherein the collector composition contains less than 5 wt % of alkyletherdiamine on total amine components.5. Collector composition of containing further additives claim 1 , selected from the group of depressants claim 1 , surfactants claim 1 , froth modifiers claim 1 , or neutralizing agents claim 1 , such as acetic acid claim ...

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Номер записи: 83
30-07-2020 дата публикации

Agglomerated Hemicellulose Compositions, Methods of Preparation Thereof, and Processes for Enriching a Desired Mineral from an Ore

Номер: US20200238302A1
Автор: Casasús Anna I., Kofsky-Wofford Stephanie, Wilson Duane C., YIN Xihui
Принадлежит:

Methods for preparing agglomerated hemicellulose compositions are provided. Agglomerated hemicellulose compositions comprising agglomerates are also provided herein. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral, wherein the process comprises carrying out a flotation process in the presence of one or more collecting agents and a depressant composition comprising an agglomerated hemicellulose composition. 1. An agglomerated hemicellulose composition comprising agglomerates , wherein at least about 50% of the agglomerates are retained on a 20 mesh sieve , at least about 90% of the agglomerates are retained on a 100 mesh sieve , and the size of the agglomerates ranges from about 0.1 to about 15 mm.3. The agglomerated hemicellulose composition of claim 2 , wherein step (c) comprises (i) agglomerating the new or undigested plant material comprising hemicellulose with the granulation fluid to provide a wet agglomerated hemicellulose composition and (ii) heating the wet agglomerated hemicellulose composition to provide the agglomerated hemicellulose composition.5. The method of claim 4 , wherein step (c) comprises (i) agglomerating the new or undigested plant material comprising hemicellulose with the granulation fluid to provide a wet agglomerated hemicellulose composition and (ii) heating the wet agglomerated hemicellulose composition to provide the agglomerated hemicellulose composition.6. The method of claim 5 , wherein the water content of the wet agglomerated hemicellulose composition is from about 65% to about 90% by weight.7. The method of claim 4 , wherein the granulation fluid comprises water and a caustic agent selected from sodium hydroxide claim 4 , calcium hydroxide claim 4 , potassium hydroxide claim 4 , lithium hydroxide claim 4 , rubidium hydroxide claim 4 , cesium hydroxide claim 4 , magnesium hydroxide claim 4 , strontium hydroxide claim 4 , barium hydroxide claim 4 , calcium hydroxide claim 4 , a ...

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Номер записи: 84
07-09-2017 дата публикации

Use of Branched Alcohols and Alkoxylates Thereof as Secondary Collectors

Номер: US20170252753A1
Автор: HENRIKSSON Elisabeth, Klingberg Anders, NORDBERG Henrik, SMOLKO-SCHVARZMAYR Natalija
Принадлежит: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.

The present invention relates to the use of branched fatty alcohol-based compounds selected from the group of fatty alcohols with 12-16 carbon atoms having a degree of branching of 1-3, and their alkoxylates with a degree of ethoxylation of up to 3, as secondary collectors for the froth flotation of non-sulfidic ores, incombination with a primary collector selected from the group of amphoteric and anionic surface active compounds. 1. Use of branched fatty alcohol-based compounds selected from the group of fatty alcohols with 12-16 carbon atoms having a degree of branching of 1-3 , and their alkoxylates with a degree of ethoxylation of up to 3 , as secondary collectors for the froth flotation of non-sulfidic ores , in combination with a primary collector selected from the group of amphoteric and anionic surface active compounds.5. Use according to any of the preceding claims wherein the weight ratio between the primary collector and the secondary collector is between 15:85 and 99:1.6. Use according to any of the preceding claims wherein the non-sulfidic ore is a calcium phosphate-containing ore.7. A process for the froth flotation of non-sulfidic ores using a collector composition comprising a primary collector selected from the group of amphoteric and anionic surface-active compounds , and a secondary collector which is selected from the group of branched fatty alcohols with 12-16 carbon atoms having a degree of branching of 1-3 , and alkoxylates thereof with a degree of ethoxylation of up to 3.10. A process according to any one of to wherein the weight ratio between the primary collector and the secondary collector is from 15:85 to 99:1.12. A process according to any one of the to wherein the non-sulfidic ore is a phosphate-containing ore.13. A process according to which comprises the steps a) conditioning a pulped phosphate-containing ore , wherein the ore comprises a phosphate-containing mineral , and gangue minerals , with an effective amount of a collector ...

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Номер записи: 85
13-09-2018 дата публикации

Recovery of Molybdenum Using Sodium Metabisulfite and a Thiocarbonate Depressant

Номер: US20180257089A1
Автор: Ramos Benigno
Принадлежит:

The present invention discloses mining collector compositions containing sodium metabisulfite and a thiocarbonate compound. Flotation processes for recovering molybdenum from a copper-molybdenum concentrate using the collector compositions also are disclosed. 1. A flotation process for the recovery of molybdenum from a copper-molybdenum concentrate , the process comprising contacting:a molybdenum collector composition comprising sodium metabisulfite and a thiocarbonate compound; withthe copper-molybdenum concentrate, the copper-molybdenum concentrate comprising water, copper, and molybdenum.2. The process of claim 1 , wherein:a weight ratio of the thiocarbonate compound to sodium metabisulfite in the molybdenum collector composition is in a range from about 1:10 to about 10:1; andthe thiocarbonate compound comprises a trithiocarbonate compound.3. The process of claim 1 , wherein:a weight ratio of the thiocarbonate compound to sodium metabisulfite in the molybdenum collector composition is in a range from about 1:2 to about 6:1; andthe thiocarbonate compound comprises disodium carboxymethyltrithiocarbonate.4. The process of claim 1 , wherein the percent recovery of molybdenum from the copper-molybdenum concentrate is at least about 92 wt. %.5. The process of claim 1 , wherein the copper-molybdenum concentrate comprises claim 1 , on a dry basis:from about 5 to about 50 wt. % copper; andfrom about 0.1 to about 5 wt. % molybdenum.6. The process of claim 5 , wherein:the percent recovery of molybdenum from the copper-molybdenum concentrate is at least about 90 wt. %; andthe percent recovery of copper from the copper-molybdenum concentrate is less than about 10 wt. %.7. The process of claim 6 , wherein the copper-molybdenum concentrate further comprises iron.8. The process of claim 7 , wherein:the copper-molybdenum concentrate comprises from about 20 to about 40 wt. % iron, on a dry basis; andthe percent recovery of iron from the copper-molybdenum concentrate is less than ...

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Номер записи: 86
22-08-2019 дата публикации

PROCESS FOR MANUFACTURING WHITE PIGMENT CONTAINING PRODUCTS

Номер: US20190256714A1
Автор: Maier Jorg, Sötemann Jörg
Принадлежит:

A process is described for manufacturing white pigment containing products. The white pigment containing products are obtained from at least one white pigment and impurities containing material via froth flotation. 2. The process according to claim 1 , wherein the process comprises conducting an indirect flotation step that forms a froth containing the impurities and a white pigment bearing phase with the white pigment containing product.3. The process according to claim 1 , wherein the white pigment is a white mineral pigment.4. The process according to claim 1 , wherein the white mineral pigment is an alkaline earth metal carbonate.5. The process according to claim 1 , wherein the white pigment containing material comprises impurities selected from the group consisting of iron sulphides claim 1 , iron oxides claim 1 , graphite claim 1 , silicates and mixtures thereof.6. The process according to claim 5 , wherein the silicate is selected from the group consisting of quartz claim 5 , a mica claim 5 , an amphibolite claim 5 , a feldspar claim 5 , a clay mineral and mixtures thereof.7. The process according to claim 5 , wherein the silicate is a white colored silicate selected from the group consisting of wollastonite claim 5 , kaolin claim 5 , kaolinitic clay claim 5 , calcined kaolinitic clay claim 5 , montmorillonite claim 5 , talc claim 5 , diatomaceous earth claim 5 , sepiolite and mixtures thereof.8. The process according to claim 1 , wherein the amount of white pigment in the at least one white pigment and impurities containing material of step a) is from 0.1 wt.-% to 99.9 wt.-% claim 1 , based on the dry weight.9. The process according to claim 1 , wherein the ratio of white pigment:impurities in the at least one white pigment and impurities containing material of step a) is from 0.1:99.9 to 99.9:0.1 claim 1 , based on the dry weight.10. The process according to claim 1 , wherein the at least one white pigment and impurities containing material of step a) has ...

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Номер записи: 87
22-08-2019 дата публикации

PROCESS FOR METAL RECOVERY IN FLOTATION OPERATIONS

Номер: US20190256950A1
Автор: Horn Francisco, Horn Franziskus, Horn Pedro
Принадлежит:

The present invention is related to a process for increasing copper or metal recovery in flotation processes, specially of minerals that are dissolved during the grinding stage, by the use of any sulfidizing agent or ionizing sulfide such as, but not limited to, sodium hydrogen sulfide, sodium sulfide, potassium hydrogen sulfide, potassium sulfide, ammonium hydrogen sulfide or ammonium sulfide, hydrogen sulfide (H2S), polysulfides of potassium, calcium, magnesium or ammonium to precipitate during the grinding stage or immediately after the grinding stage, metals that have been dissolved prior or during the milling or grinding stage prior to normal flotation. 1. Process for improving recovery of metals in mineral flotation operations or metal mineral pulps containing easily soluble metal sulfides and/or metal oxides or metals in solution in the case of pulps from reprocessed tailings , characterized in that it comprises adding a ionizing sulfide or sulfurizing agent in the grinding step or in a prior step , so as to precipitate as insoluble sulfides the dissolved metal ions of interest or being dissolved in the grinding step prior to flotation , in order to recover them by a conventional flotation process.2. The process according to claim 1 , characterized in that the ionizing sulfide or sulfidizing agent is selected form the group comprising sodium hydrogen sulfide claim 1 , sodium sulfide claim 1 , potassium hydrogen sulfide claim 1 , potassium sulfide claim 1 , ammonium hydrogen sulfide or ammonium sulfide claim 1 , hydrogen sulfide (H2S) claim 1 , polysulfides of potassium claim 1 , sodium claim 1 , calcium claim 1 , magnesium or ammonium claim 1 , or a mixture of thereof3. The process according to claim 1 , characterized in that the pH is adjusted with lime or another modifying agent to a pH of 6.0 to 8.0 or more preferably to 6.5 to 7.5 during the grinding stage claim 1 , to neutralize the generation of acid caused by the precipitation reaction.4. The process ...

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Номер записи: 88
28-09-2017 дата публикации

PORTABLE TEST-DEVICE FOR SELECTIVE FLOCCULATION

Номер: US20170276661A1
Автор: Kumar Dharmendr, Pradip , RAI Beena, TAMMISHETTI VENUGOPAL
Принадлежит: TATA CONSULTANCY SERVICES LIMITED

This disclosure relates generally to selective flocculation, and more particularly to portable test-device for performing selective flocculation experiments in continuous mode. The test-device includes a slurry inflow system, a flocculant tank, a static mixer, a control pumping system, and a thickener system. The static mixer is connected to the slurry inflow system and the flocculant tank, to receive and mix flocculant solution and slurry and cause formation of floc. The control pumping system connects the flocculant tank and the slurry inflow system to the static mixer to control the control parameters responsible for pumping the slurry and flocculant solution in the continuous mode in the static mixer. The thickener system comprises a thickener tank to receive treated slurry and the floc from the static mixer, separately collect tailings and the floc from the thickening tank. The components of the portable test-device are removably connected to each other. 1. A portable test-device for performing selective flocculation experiments in continuous mode , the test-device comprising:a slurry inflow system adapted to receive slurry, the slurry inflow system comprising a first static mixer capable of being removably connected to slurry pipes, the slurry pipes capable of carrying slurry from a plant;a flocculant tank capable of storing a flocculant solution, the flocculant solution capable of causing formation of floc when mixed with the slurry;a second static mixer removably connected to the first static mixer and the flocculant tank, and capable of in-line mixing the flocculant solution and the slurry, to cause formation of the floc and tailings, the second static mixer comprising a plurality of mixing elements configured to divide and rotate a fluid comprising the flocculant solution and the slurry in a plurality of flow-directions, wherein the second static mixer is adapted to minimize dead zones encountered in the mixing of the flocculant solution and the slurry;a ...

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Номер записи: 89
18-12-2014 дата публикации

Enrichment of metal sulfide ores by oxidant assisted froth flotation

Номер: US20140369906A1
Автор: Alan Hitchiner, Gerhard Arnold, Ingo Hamann, Terry Brown
Принадлежит: EVONIK DEGUSSA GmbH

The present invention is directed to methods that can be used in the enrichment of metal sulfide ores in desired minerals in cases where the ores have sulfide-containing gangues. The method involves adding an oxidant to slurries prepared from the ores during, or immediately prior to froth flotation.

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Номер записи: 90
05-10-2017 дата публикации

Mercaptanized Dicyclopentadiene Compositions and Use Thereof as a Mining Chemical Collector

Номер: US20170282193A1
Автор: Byers Jim D., KREIDER Jason L., LASSEN Kenneth M., Matson Michael S.
Принадлежит:

The present invention discloses thiol compositions containing monothiotricyclodecenes, dithiotricyclodecanes, and intermolecular sulfide compounds, as well as mining chemical collector compositions containing such thiol compositions. Flotation processes for recovering metals, such as copper and molybdenum, from ores using the mining chemical collector compositions also are disclosed. 1. A flotation process for the recovery of molybdenum from an ore , the process comprising:contacting the ore with a collector composition, wherein the collector composition comprises a thiol composition comprising sulfur-containing compounds, the sulfur-containing compounds comprising:(i) at least 80 wt. % monothiotricyclodecene compounds;(ii) less than 10 wt. % dithiotricyclodecane compounds; and(iii) less than 10 wt. % of a heavy fraction comprising intermolecular sulfide compounds having at least one intermolecular sulfide group (—S—), at least two groups independently selected from a tricyclodecenyl group and a tricyclodecanyl group, and optionally at least one thiol sulfur group (—SH); wherein:the ore comprises chalcopyrite and/or chalcocite; anda percent recovery of molybdenum from the ore is at least about 70 wt. %.5. The process of claim 1 , wherein the sulfur-containing compounds comprise:(i) at least 90 wt. % of monothiotricyclodecene compounds;(ii) less than or equal to 5 wt. % of dithiotricyclodecane compounds; and(iii) less than or equal to 5 wt. % of the heavy fraction.6. The process of claim 1 , wherein the thiol composition contains less than or equal to 1 wt. % sulfur-free olefin-containing compounds.7. The process of claim 1 , wherein the sulfur-containing compounds are characterized by:an average of less than 1 wt. % sulfide sulfur; andan average of from 19 wt. % to 20 wt. % thiol sulfur.8. The process of claim 1 , wherein a percent recovery of molybdenum from the ore is at least about 85 wt. %.9. The process of claim 1 , wherein the collector composition and the ore ...

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Номер записи: 91
05-10-2017 дата публикации

Methods of Preparing Hemicellulose Compositions

Номер: US20170283515A1
Автор: da Costa Marcelo Moreira, Kofsky-Wofford Stephanie A., Wilson Duane C., YIN Xihui
Принадлежит:

Multi-extraction methods for preparing hemicellulose compositions are provided. Depressant compositions comprising hemicellulose compositions are also provided herein. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral, wherein the process comprises carrying out a flotation process in the presence of one or more collecting agents and a depressant composition comprising hemicellulose. 1. A method for preparing a hemicellulose composition or a depressant composition comprising hemicellulose , comprising:(a) combining new or undigested plant material comprising hemicellulose, at least one caustic base and, optionally, at least one oxidant to form a first reaction mixture;(b) reacting the first reaction mixture for a time sufficient to form a first reaction product containing hemicellulose, wherein the reaction product comprises a liquid portion and solid portion;(c) separating at least some of the liquid portion of the first reaction product from the solid portion of the first reaction product to provide a first hemicellulose composition;(d) combining at least a portion of the first hemicellulose composition with new or undigested plant material, at least one caustic base and, optionally, at least one oxidant to form a second reaction mixture,(e) reacting the second reaction mixture for a time sufficient to form a second reaction product containing hemicellulose, wherein the reaction product comprises a liquid portion and a solid portion; and(f) separating at least some of the liquid portion of the second reaction product from the solid portion of the second reaction product to provide a second hemicellulose composition or depressant composition comprising hemicellulose.2. The method of claim 1 , wherein the method further comprises:(g) combining at least a portion of the second hemicellulose composition with new or undigested plant material, at least one caustic base and, optionally, at least one oxidant to form a ...

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Номер записи: 92
04-10-2018 дата публикации

DIFFERENTIAL FLOTATION OF SULFIDE ORES FOR RECOVERING REFRACTORY GOLD

Номер: US20180280992A1
Автор: Leppinen Jaakko, MOILANEN Jari
Принадлежит:

A process for recovery of gold from gold-containing raw materials includes obtaining gold-containing raw material having refractory gold-containing sulfidic minerals including a first type of refractory sulfidic mineral having high gold content and a second type of sulfidic mineral having low gold content; forming a mineral pulp including a first type of refractory sulfidic mineral particles having high gold content and second type of sulfidic mineral particles having low gold content by suspending ground gold-containing material in water and optionally further milling the material; conditioning the mineral pulp by addition of a surface modifying chemical to obtain a conditioned pulp; subjecting the conditioned pulp to a froth flotation process; recovering the non-floatable first type of refractory sulfidic mineral particles having high cold content as flotation tailings; pressure oxidizing (PDX) the flotation tailings to obtain a discharge slurry comprising liberated gold; and recovering gold from the discharge slurry. 1. A process for recovery of gold from gold-containing raw materials comprising refractory gold-containing minerals , in particular gold-containing refractory sulfidic minerals , comprising:(a) obtaining gold-containing raw material comprising refractory gold-containing sulfidic minerals comprising first type of refractory sulfidic mineral having high gold content and second type of sulfidic mineral having low gold content, said first type and said second type of sulfidic minerals are to be classified within a single species of refractory sulfidic minerals;(b) forming a mineral pulp comprising first type of refractory sulfidic mineral particles having high gold content and second type of sulfidic mineral particles having low gold content by suspending ground gold-containing material in water and optionally further milling the material;(c) conditioning the mineral pulp by addition of a surface modifying chemical for modifying the surface of the first ...

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Номер записи: 93
20-10-2016 дата публикации

Polyester Polyquaternary Ammonium Compound Collectors For Reverse Froth Flotation Of Silicates From Nonsulfidic Ores

Номер: US20160304663A1
Автор: Hanamanthsa Bevinakatti
Принадлежит: Akzo Nobel Chemicals International BV

The present invention relates to a compound obtainable by the condensation of a polyol having 3-4 hydroxyl groups, adicarboxylic acid or a derivative thereof, an alkanolamine and a fatty acid, followed by reaction with an alkylating agent. This compound is useful as a collector in a process for the reverse froth flotation of non-sulfidic ores containing silicate as impurities, especially phosphate ores.

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Номер записи: 94
18-10-2018 дата публикации

System and Method for Foam Fractionation

Номер: US20180296946A1
Автор: Marchand Kevin, Piggott Stephen, WHITE Jason
Принадлежит:

Embodiments of the disclosure provide a foam fractionation method and system that include a foam collection container having a body, a collection tube coupled to the collection container, and a foam collection conduit coupled with foam removal piping disposed within a chamber formed by the body of the collection cone. The collection container and the collection tube are coupled to allow for pressurization within the chamber. A mouth of the foam collection conduit is operable to receive foam. 1. A foam fractionation device comprising:a foam collection container having a body;a collection tube coupled to the collection container; anda foam collection conduit coupled with foam removal piping disposed within a chamber formed by the body of the foam collection container,wherein the foam collection container and the collection tube are coupled to allow for pressurization within the chamber, andwherein a mouth of the foam collection conduit is operable to receive foam.2. The foam fractionation device of claim 1 , wherein the body of the foam collection container is in the form of an inverted cone and the foam collection container further includes a neck extending upwardly from the body.3. The foam fractionation device of claim 1 , further including a cap disposed at an upper end of the collection tube.4. The foam fractionation device of further comprising one or more connectors that extend through one or more bores along the body of the foam collection container.5. The foam fractionation device of claim 4 , wherein the one or more connectors are coupled with one or more support members exterior to the foam fractionation device.6. The foam fractionation device of claim 1 , wherein the foam removal piping is fluidly coupled with a pressure regulating device.7. The foam fractionation device of claim 6 , wherein the pressure regulating device is operable to cause an internal water level within the chamber to be lower than an operational water level exterior to the cone.8. The ...

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Номер записи: 95
27-10-2016 дата публикации

PROCESS FOR RECOVERING VALUE METALS FROM ORE

Номер: US20160310956A1
Автор: ALEXANDER Daniel John, FILMER Anthony Owen
Принадлежит:

This invention relates to a process for recovering valuable metals from ore with significantly reduced water consumption through the discrete treatment and storage of coarse tailings. Ore is ground to produce a coarse particulate ore. The coarse particulate ore is treated in a coarse flotation stage to produce a low grade concentrate fraction and a coarse tailings fraction. The low grade concentrate fraction is treated to produce fine tailings and a saleable concentrate. The coarse tailings are treated separately from the fine tailings and water is recovered from the coarse tailings by hydraulically stacking; filtering or screening, whereafter the coarse tailings are dry stacked, without being recombined with the fine tailings. 1. A process for recovering value metals from ore , including the steps of:grinding the ore to produce a coarse particulate ore with a particle size p80 of greater than 150 μm up to 1000 μm;treating the coarse particulate ore in a coarse flotation stage to produce a concentrate fraction, and a coarse tailings fraction with a particle size p80 of greater than 150 μm up to 1000 μm; andmilling the concentrate fraction to produce a milled concentrate, and treating the milled concentrate in a secondary flotation stage to produce a secondary concentrate fraction and a fine tailings fraction; wherein:coarse tailings from the coarse tailings fraction are treated and/or stored separately from the fine tailings fraction or any other fine tailings.2. The process claimed in claim 1 , wherein the coarse tailings from the coarse tailings fraction are dry stacked.3. The process claimed in claim 2 , wherein water is removed from the coarse tailings from the coarse tailings fraction by hydraulically stacking; filtering or screening.4. The process claimed in claim 1 , wherein coarse tailings from the coarse tailings fraction are not combined with fine tailings claim 1 , nor passed through a concentrator.5. The process claimed in claim 1 , wherein the ore is ...

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Номер записи: 96
27-10-2016 дата публикации

CLAY FLOTATION OF TAILINGS

Номер: US20160310964A1
Автор: GU YONG (JOE), LORENTZ JAMES, SIMAN RON, YUAN SIMON
Принадлежит:

A process for treating and dewatering tailings comprising fine clay minerals, fine silt minerals and water is provided, comprising treating the tailings with a sufficient amount of a clay surface reagent to selectively modify the surface properties of the fine clay minerals; subjecting the treated tailings to froth flotation to float a portion of the fine clay minerals and form a clay froth layer and froth flotation tails having a reduced fine clay minerals content; and recovering the clay froth layer and subjecting it to dewatering. 1. A process for treating and dewatering tailings comprising fine clay minerals , fine silt minerals and water , comprising:(a) treating the tailings with a sufficient amount of a clay surface reagent to selectively modify the surface properties of the fine clay minerals;(b) subjecting the treated tailings to froth flotation to float a portion of the fine clay minerals and form a clay froth layer and froth flotation tails having a reduced fine clay minerals content; and(c) recovering the clay froth layer and subjecting it to dewatering.2. The process as claimed in claim 1 , wherein the clay froth layer is dewatered by drainage and air drying.3. The process as claimed in claim 1 , further comprising:(d) dewatering the froth flotation tails by subjecting the froth flotation tails to liquid solids separation to yield a solids product for reclamation.4. The process as claimed in claim 1 , wherein the clay surface reagent is a cationic collector selected from the group consisting of dodecylamine (DDA) claim 1 , docecylamine hydrochloride (DDAHCl) claim 1 , docecyl-trimethylammonium chloride (DTAC) and cetyl-trimethylammonium bromide (CTAB).5. The process as claimed in claim 1 , further comprising pre-treating the tailings with a flocculant claim 1 , a coagulant or both selective for clay minerals prior to treatment with the clay surface reagent.6. The process as claimed in claim 5 , wherein the flocculant is an anionic polyacylamide.7. The ...

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Номер записи: 97
05-11-2015 дата публикации

Polyquaternary Polymer as a Depressant in a Method for Froth Flotation of Potash Ores

Номер: US20150314305A1
Автор: Christina Josefin Lannefors, Jan Olof Gustafsson
Принадлежит: Akzo Nobel Chemicals International BV

The present invention relates to the use of a polyquaternary polymer obtainable by reacting i) a dialkylamine having the structure R 1 R 2 NH, where R 1 and R 2 independently are hydrocarbyl groups having 1-3 carbon atoms; ii) a difunctional compound selected from the group consisting of epihalohydrins, diepoxides, precursors of epihalohydrins and epoxides which under alkaline conditions are readily converted into the corresponding epoxy compounds, and mixtures thereof; and iii) optionally a polyfunctional amine selected from the group consisting of ammonia, primary amines, alkylenediamines having 2-6 carbon atoms, and polyalkyle nepolyamines having the structure H 2 N—[R 3 —N(R 4 )] y —R 3 —NH 2 , where y is an integer from 1 to 5, R 3 is an alkylene radical having 2 to 6 carbon atoms, and R 4 is selected from the group consisting of hydrogen, a hydrocarbyl group having 1-3 carbon atoms, and an ω-aminoalkyl group having 2 to 6 carbon atoms; as a depressant in a method for froth flotation of potash ores.

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Номер записи: 98
02-11-2017 дата публикации

APPARATUS FOR SIMULTANEOUS GRINDING AND FROTH FLOTATION

Номер: US20170312759A1
Автор: Sötemann Jörg, STEINWENDER Michael
Принадлежит:

The present invention relates to apparatus for simultaneous grinding and froth flotation of at least one crude mineral and/or pigment, a process carried out in the apparatus for manufacturing at least one ground mineral and/or pigment, use of the ground mineral and/or pigment bearing phase obtainable by the process in paper applications as well as in paper, plastics, paints, coatings, adhesives, sealants, food, feed, pharma, concrete, cement, cosmetic, water treatment and/or agriculture applications, preferably in a wet end process of paper machine, in cigarette paper, board, and/or coating applications, or as support for rotogravure and/or offset and/or ink jet printing and/or continuous ink jet printing and/or flexography and/or electrophotography and/or decoration surfaces and the ground mineral and/or pigment bearing phase or ground mineral and/or pigment obtainable by the process. 1. An apparatus for simultaneous grinding and froth flotation of at least one crude mineral and/or pigment , comprising{'b': 1', '2, 'a) a vessel () suitable for containing grinding media (), a flotation gas, a collector agent and at least one crude mineral and/or pigment;'}{'b': 3', '1, 'b) an agitation unit () rotatably mounted in vessel ();'}{'b': 4', '3', '2, 'c) drive means () connected to agitation unit () for agitating the grinding media () and the at least one crude mineral and/or pigment to grind the at least one crude mineral and/or pigment into at least one ground mineral and/or pigment;'}{'b': 5', '1, 'claim-text': [{'b': '5', 'i': 'a', 'i. a crude mineral and/or pigment feed (),'}, {'b': '5', 'i': 'b', 'ii. a collector agent feed (), and'}, {'b': '5', 'i': 'c', 'iii. a flotation gas inlet ();'}], 'd) a charge system () connected to vessel () comprising'}{'b': 6', '1, 'claim-text': [{'b': '6', 'i': 'a', 'i. a sieve () suitable for separating the froth from the ground mineral and/or pigment,'}, {'b': '6', 'i': 'b', 'ii. a product collecting zone () suitable for collecting ...

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Номер записи: 99
10-11-2016 дата публикации

Frothers for mineral flotation

Номер: US20160325290A1
Автор: James Adrian Counter, John D. Kildea
Принадлежит: ECOLAB USA INC

The invention provides methods and compositions for improving a froth flotation type separation. The method uses a microemulsion to improve the effectiveness of a frother. The improvement allows for low dosages of frother to work as well as much greater amounts of non-microemulsified frother.

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Номер записи: 100