СПОСОБ ПОЛУЧЕНИЯ КОНЦЕНТРАТА СКАНДИЯ

FIELD: chemistry. SUBSTANCE: invention relates to technology of associated extraction of scandium from productive solutions formed during processing of rare-earth ores containing scandium. To obtain scandium concentrate from scandium-containing solution, scandium is sorbed from scandium-containing solution on phosphorus-containing ionite, saturated phosphorus-containing ionite is washed, desorption of scandium from saturated phosphorus-containing ionite with sodium carbonate solution to obtain desorbed ionite, which is fed for repeated sorption of scandium and desorption solution, which is pre-acidified with subsequent precipitation of scandium concentrate by treatment with sodium hydroxide or ammonia. Prior to washing, desorption of thorium containing in scandium-containing solution is carried out with solution of oxyethyl diphosphonic acid with concentration of 50–100 g/dm 3 . EFFECT: method increases purity of scandium concentrate. 1 cl, 1 tbl, 1 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 731 951 C2 (51) МПК C22B 59/00 (2006.01) C22B 60/02 (2006.01) C22B 3/24 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C22B 59/00 (2020.02); C22B 60/02 (2020.02); C22B 3/24 (2020.02) (21)(22) Заявка: 2018141853, 28.11.2018 (24) Дата начала отсчета срока действия патента: Дата регистрации: 09.09.2020 (43) Дата публикации заявки: 28.05.2020 Бюл. № 16 (45) Опубликовано: 09.09.2020 Бюл. № 25 2 7 3 1 9 5 1 R U (56) Список документов, цитированных в отчете о поиске: SU 1400112 A1, 10.07.2000. RU 2567167 C2, 10.11.2015. SU 1464492 A1, 10.07.2000. RU 2647398 C2, 15.03.2018. SU 703929 A1, 07.11.1983. WO 2012126092 A1, 27.09.2012. (54) СПОСОБ ПОЛУЧЕНИЯ КОНЦЕНТРАТА СКАНДИЯ (57) Реферат: Изобретение относится к технологии десорбированного ионита, который направляют попутного извлечения скандия из продуктивных на повторную сорбцию скандия и раствора растворов, образующихся при переработке десорбции, который предварительно ...

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... 1. Аппарат для десорбции веществ из ионообменной смолы, имеющей сорбированные на ней примеси и целевые материалы, причем аппарат включает в себя первую и вторую камеры, которые устроены таким образом, что при работе смолу подают в первую камеру, и она перемещается из первой камеры во вторую камеру, и десорбирующий раствор подают во вторую камеру, и он перемещается из второй камеры в первую камеру таким образом, что i) примеси, имеющие меньшее сродство к смоле, чем целевой материал, могут десорбироваться из смолы, и целевой материал может сорбироваться на смолу из десорбирующего раствора в первой камере и, таким образом, создаются условия, когда поток примесей, имеющий высокую концентрацию примесей и относительно низкую концентрацию целевого материала, может выпускаться из первой камеры через первый выход; и ii) целевой материал может десорбироваться из смолы во второй камере, и создаются условия, когда богатый поток, имеющий низкую концентрацию примесей и относительно высокую концентрацию ...

Анионит для извлечения урана и способ его получения

Заявляемое изобретение относится к сорбционной гидрометаллургии урана и может быть использовано для извлечения урана из растворов и пульп. Описан способ получения анионита для извлечения урана из сернокислых продуктивных растворов, включающий суспензионную сополимеризацию производных n-винилпиридина и дивинилбензола при нагревании в дисперсионной водной среде, содержащей хлорид натрия и нитрит натрия, согласно изобретению сополимеризацию проводят в присутствии перекиси бензоила в среде, содержащей крахмал и лаурилсульфат натрия, после сополимеризации сополимер метилируют в присутствии диметилсульфата в среде спирта. Также описан анионит для извлечения урана из сернокислых продуктивных растворов, полученный указанным выше способом, на основе сополимера, состоящего из производных n-винилпиридина и дивинилбензола, согласно изобретению анионит содержит N-метилпиридиниевые группы, в количестве 50-70%. Технический результат - повышение полной обменной емкости анионита по урану и механической ...

ФЛОТАЦИОННЫЕ РЕАГЕНТЫ И СПОСОБ ФЛОТАЦИИ С ИХ ИСПОЛЬЗОВАНИЕМ

... 1. Способ повышения извлекаемости ценных сульфидных минералов и/или минералов драгоценных металлов из руды, содержащей указанный минерал и/или минерал драгоценного металла и один или несколько из силиката Mg, шламообразующих минералов и/или глины, каковой способ включает: добавление на одной или нескольких стадиях процесса пенной флотации, осуществляемого в кислотных условиях, модификатора пенной фазы, содержащего полимер, включающий одну или несколько функциональных групп, подобранных из группы, состоящей из сульфонатных групп или соответствующих им кислот, фосфатных групп или соответствующих им кислот, фосфонатных групп или соответствующих им кислот, фосфинатных групп или соответствующих им кислот, гидроксаматных групп или соответствующих им кислот, силановых групп и силанольных групп,тем самым, повышается извлекаемость ценных сульфидных минералов и/или минералов драгоценных металлов из указанной руды.2. Способ по п. 1, в котором полимер дополнительно включает одну или несколько гидрофобных ...

СПОСОБ ПОЛУЧЕНИЯ КОНЦЕНТРАТА СКАНДИЯ

ФЛОТАЦИОННЫЕ РЕАГЕНТЫ И СПОСОБ ФЛОТАЦИИ С ИХ ИСПОЛЬЗОВАНИЕМ

... 1. Способ повышения извлекаемости ценных сульфидных минералов или минералов драгоценных металлов из руды, содержащей силикат Mg, шламообразующие минералы и/или глину, в щелочных условиях, каковой способ включает следующие стадии: ! дробление руды, содержащей сульфид или драгоценный металл, каковая руда содержит также силикат Mg, шламообразующие минералы и/или глину, с получением дробленой руды; ! размол указанной дробленой руды с получением размолотой руды; !осуществление процесса флотации указанной размолотой руды; ! где усиливающий действие модификаторов агент, представляющий собой однозарядный ион, и, по меньшей мере, один модификатор пенной фазы добавляют, по меньшей мере, к указанной дробленой руде, указанной размолотой руде или их сочетанию, и где указанный модификатор пенной фазы представляет собой полимер, в котором имеется, по меньшей мере, одна функциональная группа, подбираемая из группы, в которую входят карбоксильные группы или группы, преобразующиеся в карбоксильные в результате ...

СПОСОБ ИЗВЛЕЧЕНИЯ СКАНДИЯ ИЗ КРАСНОГО ШЛАМА ГЛИНОЗЕМНОГО ПРОИЗВОДСТВА

Способ извлечения вольфрама и молибдена из отработанных катализаторов на алюмооксидных носителях

Изобретение относится к металлургии и может быть использовано для переработки отработанных катализаторов на алюмооксидных носителях с получением соединений вольфрама и молибдена. Способ включает обжиг катализатора при 450-500°С, его измельчение до фракции менее 0,1 мм, содовое выщелачивание с применением ультразвукового аппарата, который облучает пульпу частотой 20-30 кГц с мощностью не менее 300 Вт/см2, при температуре 90-95°С до прекращения увеличения концентрации вольфрама в растворе и корректировку рН раствора до 3,0-3,5. Из полученного раствора осуществляют сорбцию вольфрама сильноосновным макропористым анионитом на основе сополимера стирол-дивинилбензола с триметиламмоневыми функциональными группами 1-го типа и сорбцию молибдена слабоосновным макропористым анионитом на основе сшитого полистирола с функциональными группами из третичных аминов. Далее осуществляют десорбцию вольфрама и молибдена. Десорбцию вольфрама осуществляют раствором щелочи. Из полученного щелочного элюата выделяют ...

PROCESS FOR EXTRACTING GALLIUM FROM INDUSTRIAL SOLUTION OF SODIUM ALUMINATE IN BAYER PROCESS

OPTISCH ADRESSIERBARES BILDANZEIGEGERAET

VERFAHREN ZUR ENTFERNUNG VON SCHWER- UND UEBERGANGSMETALLEN AUS EINER LOESUNG

Verfahren zur Trennung der Metalle der Platingruppe

COPOLYMER, PROCESS FOR ITS PREPARATION AND ITS USE AS A SORBENT

EXTRACTION OF SILVER AND PALLADIUM METALS FROM AQUEOUS SOLUTIONS USING TERTIARY PHOSPHINE SULFIDES

TRENNUNG DER METALLE DER PLATINGRUPPE

PRECIOUS METAL RECOVERY

PRODUCTION OF TEXTILE &C

COMPOSITE MATERIALS

A composite material comprising an organic liquid retained within a matrix of an inorganic material, is prepared in accordance with the present invention by a process which includes hydrolysing, in the presence of the organic liquid, a compound capable of producing the matrix of the inorganic material thereby to produce the composite material. The organic liquid may be, for example, a solvent extraction liquid or an oil. Alkyl silicates, alkyl titanates and aluminium alkoxides are examples of compounds capable of forming the matrix.

HEAVY METAL RECOVERY

AGENT AND PROCESS FOR OBTAINING NOBLE METALS FROM THIOUREA COMPLEXES THEREOF

Gold recovery process

IMPROVEMENTS IN OR RELATING TO MATERIALS

Noble metal extraction

Extraction of noble metals, for example from their ores, using acidic solutions of cyclic thiourea derivatives, e.g., ethylenethiourea, at concentrations for example, of 0.01 to 2.0% by weight.

Ion-exchanger for separating gallium - 68 from its parent nuclide germanium - 68.

The ion exchanger consists entirely or substantially of a condensation product obtained from polyhydroxybenzene having not less than 2 adjacent hydroxyl groups (ortho-position) and formaldehyde in a molar excess of 5 to 15%, or contains such a condensation product incorporated therein, wherein the condensation product has a reversible water content of not less than 40% by weight. A process for preparing such an ion-exchanger comprises reacting in an inert medium (e.g. paraffin) 3.4 M pyrogallol with a 10% molar excess of 37% aqueous formaldehyde solution at 85-90 DEG C, and pH 6 to 6.8. The product is cured at 115 to 120 DEG C for 15 to 25 hours and then the inert medium filtered off.

REDUCING IRON CONTENT OF RAW MATERIALS

Control device

An inclined screen separator 12, 14 is used to separate adsorbent particles from a slurry, which is being treated in vessel 1 by countercurrent contact with the adsorbent particles, so that the separated particles may be conveyed from one chamber 3 to the next chamber 4. The chambers are separated by a sieve 5 which allows the slurry to pass through but not the adsorbent. The slurry may be finely divided ore containing Cu, Au or U which is picked up by the adsorbent, the adsorbent loaded with the metal being discharged at 22 and depleted ore at 8. The separator comprises a level detector 23 which acts in conjunction with a timer 20 to control the flow of adsorbent-slurry mixture up line 11 and/or the return of separated slurry and adsorbent through lines 17 and 19, intermittently or continuously. ...

PROCESS FOR SEPARATING COBALT AND NICKEL

... 1406937 Separating cobalt and nickel BAYER AG 7 Sept 1973 [9 Sept 1972] 42096/73 Heading C1A Cobalt is separated from nickel by passing an aqueous solution of them containing chloride or thiocyanate over at least one resin prepared by co-polymerizing polyvinyl and monovinyl compounds in the presence of an extractant, the cobalt being selectively retained. The resin may be a co-polymer of styrene and divinylbenzene and the extractant an aliphatic amine or quaternary ammonium compound (particularly where chloride is present) or a tri-alkyl ophosphate (particularly where thiocyanate is present). The cobalt may be eluted from the resin with dilute mineral acid, e.g. HCl or H 2 SO 4 , or water after washing with hydrochloric acid, NH 4 Cl or NH 4 CNS solutions. Other heavy metal ions, alkali- and alkaline earth-metal ions, Al and rare earth metal ions may be present in the original solution without interfering; where Cu is present CNS1 should be used; and Fe should be in the ferrous ...

Chromatographic method for separating transition metals

A method for separating of at least two transition metals from each other, the method steps include injecting a feed solution comprising at least two transition metals into a chromatography column including a chromatographic support media, eluting the feed from the column in an elution cycle by flowing an eluent through the column, and wherein a concentration of the eluent is reduced during the elution cycle prior to elution of at least one of the transition metals. Also disclosed is a method of preparing a chromatography column for use in the method for separating of at least two transition metals from each other, the method steps include: i) suspending a polymeric chromatography support media in a solution in which the polymeric chromatographic support media is in a contracted state; ii) packing the polymeric chromatography support media into a column while the polymeric chromatographic support media is in its contracted state; iii) adjusting the column while the polymeric chromatographic ...

Metals recovery method and polymer for use in metals re-covery and process for making such a polymer

A process of forming a porous polymer template material comprising poly­merising a monomer admixed with a compound of the metal to be recovered, followed by treatment of the polymer to remove the metal compound. The metal to be recovered may be rhenium and the metal compound ammonium perrhenate. The polymer may be formed by cross-linking a monomer, such as vinylpyridine, in the presence of a porogen, such as chloroform, and a metal salt. The metal can then be removed by treatment with acid to give the polymer template material. Once formed the polymer template may be comminuted. A method of selectively recovering a metal from a solution containing the metal ions comprises contacting the aforementioned porous polymer template material with the solution containing the metal ions, and recovering the metal from the polymer by treatment with hydrochloric acid.

RECOVERY OF MOLYBEDNUM FROM URANIUM LIQOURS

PROCESS FOR THE REMOVAL OF METALS FROM ORGANIC SOLUTIONS

... 1532295 Modified inorganic solids BRITISH PETROLEUM CO Ltd 27 July 1977 [29 July 1976] 31636/76 Heading CIA A product which can be used to extract certain metals from organic solutions is obtained by reacting firstly with either an inorganic solid compound containing surface hydroxyl groups or with an aromatic aldehyde compound and then the other of the two groups of compounds. Exemplified solids are alumina, titania, zirconia, glass, sepiolite or zeolites and particularly exemplified is silica.

RECOVERY OF METAL VALUES

For recovering metals adsorbed as ionic alkaline earth metal complexes on a carrier, in particular gold, silver, nickel or copper, an alkali metal cyanide solution, an alkali metal hydroxide solution or a mixture thereof is used for pretreating the carrier. The said solution preferably contains alkali metal cyanide in a concentration of 1 to 10% by weight and alkali metal hydroxide in a concentration of 1 to 20% by weight, the concentration of cyanide ions in general exceeding the concentration of hydroxyl ions. The process leads to high yields with respect to the recovery of especially rare metals.

Improvements in or relating to the recovery of gold and silver from cyanide solutions

Gold and/or silver adsorbed on an anion exchange substance as the corresponding cyanide are eluted by means of an organic solvent, such as methanol, ethanol or ethyl acetate, containing a minor proportion of an inorganic acid, preferably hydrochloric acid, and the resulting solution is distilled to remove substantially all the solvent, the precipitated gold and/or silver being separated from the residual acid e.g. by filtering through a filter press or candle filter. Distillation is preferably carried out in such manner that the temperature at a point a short distance below that at which condensation commences in the condenser is approximately 1 DEG C. above the boiling point of the solvent until distillation is substantially complete. The operation may be carried on continuously or semi-continuously, the solution being pumped to a constant head tank from which is flows to the distillation vessel under gravity or under pressure. Specification 727,582 [Group III] is referred to.

Process for the recovery of dissolved metal values

Metal values are recovered from aqueous solutions by chemically combining the metal with a substantially water-insoluble chelating agent adsorbed on a solid particulate matrix. Specially suited materials for the matrix are granular activated chars derived from fruit pits or coconut shell, or resins having high absorptive capacity but insignificant ion-exchange activity. Suitable chelating agents include thenoyltrifluoroacetone, 8-hydroxyquinoline, diphenylthio carbazone, dioctyl phosphoric acids, e.g. di-2-ethyl hexyl pyrophosphoric acid, mixtures of mono- and di-octyl orthophosphoric acids, mono-octyl orthophosphoric acid, di-isoamyl pyrophosphoric acid, mixtures of mono- and di-isoamyl orthophosphoric acids, mixtures of mono- and di-2-ethylhexyl orthophosphoric acids, and mixtures of mono- and di-capryl orthophosphoric acids. In one example, an extractive matrix for uranium is prepared by agitating a solution of dioctyl pyrophosphoric acid in ethanol with activated char, and the char ...

Improvements relating to processes for the separation of components of mixtures containing rare earths and, if desired, yttrium

Ethylenediamine tetraacetic acid is recovered from eluates from ion exchange columns containing complexes of said acid with rare earth metals, yttrium, and cadmium or zinc by acidifying with sufficient hydrochloric, nitric or sulphuric acid to provide an excess of at least 0,07 moles/1., agitating for 8-16 hours and altering. From the filtrate thus produced, rare earth metal and yttrium oxalates may be precipitated.ALSO:Individual rare earth metals and yttrium are partially separated either (a) by absorbing the metals in a cation exchange resin bed, eluting the bed with a solution of a watersoluble salt of an aminopolyacetic acid, passing the eluate through a bed of cation exchange resin in the zinc or cadmium form and collecting successive fractions or (b) by charging a cation exchange resin bed with a solution containing the mixture to be separated together with zinc or cadmium salts, eluting the bed with the above-mentioned eluting agent and collecting successive fractions. Satisfactory ...

CARRIER MEANS COATED WITH A HETERO-MACROCYCLIC COMPOUND

Anionic exchange process for the recovery of uranium and vanadium from carbonate solutions

Uranium and vanadium are recovered from carnotite ores by leaching the roasted ores with alkali metal carbonate solution, for example 5-10% sodium carbonate solution, and absorbing the dissolved uranium and vanadium values on an anion exchange resin from which the uranium and vanadium values are selectively eluted. If the initial ore is roasted with salt, the chloride concentration of the leach liquor must be reduced by adding a base to precipitate uranium and vanadium and impurities, which are separated from the chloride solution and redissolved in a carbonate solution for processing by the anion exchanger. Strongly basic resins are preferred. Contact with the anion exchanger is preferably effected at about 60 DEG C. and a catalytic amount of hydrogen fluoride may be added to increase the absorption of vanadium. Separation of the absorbed uranium and vanadium may be effected by three methods: (1) the uranium is first eluted by means of ammonium sulphate solutions having a concentration ...

METHOD OF RECOVERING COPPER AND PRECIOUS METALS

Process for the recovery of gold from an ore in chloride medium with a nitrogen species

Method and apparatus for the recovery of refractory mineral ores

Extraction of nickel and cobalt from a resin eluate stream

Flotation reagents and flotation processes utilizing same

Co-current and counter current resin-in-leach in gold leaching processes

Process of treatment and recycling of alkaline liquors coming from the alkaline treatments of the uranium ores.

Floatation reagents and floatation processes utilizing same.

NOBEL METAL RECOVERY

Method for thiosulphate leaching of precious metal-containing materials

Nobel metal recovery

Recovery of gold is enhenced to levels higher than indicated by conventional fire assay technique by dilution of the leaching liquor in the cyanide of gold ores at any time prior to the recovery of gold from solution. Depending on ore type pulp densities are reduced to 0.1 to 10 percent and held for a period of time, followed by conventional carbon in pulp recovery processes. In some cases solids are separated from the dilute solution and gold is extracted from the solution using carbon or iron exchange resins.

er streams of a mineral processing plant using zeoA method for the removal of organic chemicals and organometallic complexes from process water or othlite

METHOD OF RECOVERING COPPER AND PRECIOUS METALS

Method and apparatus for the recovery of refractory mineral ores

Separation apparatus.

Method for thiosulfate leaching of precious metal-containing materials.

Processes are provided for recovering precious metals from refractory materials using thiosulfate lixiviants. The processes can employ lixiviants that include at most only small amounts of copper and/or ammonia and operate at a relatively low pH, reduction of polythionates, inert atmospheres to control polythionate production, and electrolytic solutions which provide relatively high rates of precious metal recovery.

Method for thiosulphate of precious metal-containing materials

Flotation reagents and flotation processes utilizing same

NOBEL METAL RECOVERY

Removal of cyanide from aqueous streams

Method for thousulfate leaching of precious metal-containing materials

PROCESSES FOR RECOVERING ORGANIC SOLVENT EXTRACTANT FROM SOLID-STABILIZED EMULSIONS FORMED IN HYDROMETALLURGICAL SOLVENT EXTRACTION CIRCUITS

CO-CURRENT AND COUNTER CURRENT RESIN-IN-LEACH IN GOLD LEACHING PROCESSES

Separation apparatus

Extraction of nickel and cobalt from a resin eluate stream

Removal of cyanide from aqueous streams

Method for thiosulphate leaching of precious metal-containing materials.

Method and apparatus for the recovery of refractory mineral ores

Thiosulfate generation in situ in precious metal recovery

Method for thiosulphate leaching of precious metal-containing materials.

Thiosulfate generation in situ in precious metal recovery

SOLVENT EXTRACTION SETTLER ARRANGEMENT

Floatation reagents and floatation processes utilizing same.

Process for the recovery of gold from an ore in chloride medium with a nitrogen species

Flotation reagents and flotation processes utilizing same

Processes for recovering organic solvent extractant from solid-stabilized emulsions formed in hydrometallurgical solvent extraction circuits

Precious metals recovery

Co-current and counter current resin-in-leach in gold leaching processes

Co-current and counter current resin-in-leach in gold leaching processes

Treatment of hydrometallurgical process streams for removal of suspended fine particles.

Method for thiosulfate leaching of precious metal-containing materials.

Process of extraction of arsenic starting from solutions containing of carbonates, sulphates, possibly of the alkaline hydroxide, like one at least of metals vanadium, uranium and molubdene.

Hydrometallurgic process for the recovery of metals.

Process of recovery of molydene on activated carbon, starting from an acid uranium-bearing solution containing more molybdenum than of uranium.

Noble metal recovery.

Process of separation of metals nickel and cobalt.

Process for Recovering Molybdate or Tungstate from Aqueous Solutions

Process for recovering molybdate or tungstate from an aqueous solution, in which molybdate or tungstate is bound to a water-insoluble, cationized inorganic carrier material from the aqueous solution at a pH in the range from 2 to 6, the laden carrier material is separated off and the bound molybdate or tungstate is liberated once again into aqueous solution at a pH in the range from 6 to 14. The process is suitable for recovering molybdate or tungstate in the delignification of pulp with hydrogen peroxide in the presence of molybdate or tungstate as catalyst. The recovered molybdate or tungstate can be recycled to the delignification.

Recovering Valuable Mined Materials from Aqueous Wastes

Disclosed herein are systems and methods for recovering a target material from an aqueous stream. The target material can be a natively hydrophobic target material, such as a hydrocarbon material, such as coal. The target material can also have a surface modification that renders it hydrophobic. Systems for recovering the target material can comprise an extractant formulation comprising a light hydrocarbon solvent and a high molecular weight hydrophobic polymer, wherein the extractant formulation is mixable with the aqueous stream in a mixer to form an admixed solution having a hydrophobic portion and an aqueous portion, with the target material partitioning to the hydrophobic portion; a separator for isolating the hydrophobic portion from the aqueous portion; and a collector to which the hydrophobic portion is directed, wherein the target material is recovered from the hydrophobic portion.

Lighting apparatus for capturing and stabilizing mercury

The present invention is a method and material for using a sorbent material to capture and stabilize mercury. The method for using sorbent material to capture and stabilize mercury contains the following steps. First, the sorbent material is provided. The sorbent material, in one embodiment, is nano-particles. In a preferred embodiment, the nano-particles are unstabilized nano-Se. Next, the sorbent material is exposed to mercury in an environment. As a result, the sorbent material captures and stabilizes mercury from the environment. In the preferred embodiment, the environment is an indoor space in which a fluorescent has broken.

METAL RECOVERY AGENT, METAL COMPOUND RECOVERY AGENT, AND METHOD FOR RECOVERING METAL OR METAL COMPOUND

The present invention relates to a metal recovery agent or a metal compound recovery agent including: a dried matter of a cell or a cell derivative of the red algae belonging to the order Cyanidiales, or an artificial matter that imitates the dried matter. The present invention also relates to a method for recovering a metal or a metal compound including: an addition step of adding a dried matter of a cell or a cell derivative of the red algae belonging to the order Cyanidiales, or an artificial matter that imitates the dried matter to a metal solution; and an adsorption step of causing a metal or a metal compound contained in the metal solution to be adsorbed onto the cell or the cell derivative derived from the dried matter, or the artificial matter. 1. A metal recovery agent or a metal compound recovery agent comprising:a dried matter of a cell of red algae belonging to the order Cyanidiales;a dried matter of a cell derivative of red algae belonging to the order Cyanidiales; oran artificial matter that imitates the dried matter of the cell or the dried matter of the cell derivative.2. A method for recovering a metal or a metal compound , comprising:an addition step of adding a dried matter of a cell of the red algae belonging to the order Cyanidiales, a dried matter of a cell derivative of the red algae belonging to the order Cyanidiales, or an artificial matter that imitates the dried matter of the cells or the dried matter of the cell derivative to a metal solution; andan adsorption step of causing a metal or a metal compound contained in the metal solution to be adsorbed onto the cell derived from the dried matter, the cell derivative derived from the dried matter, or the artificial matter.3. The method for recovering a metal or a metal compound according to claim 2 ,wherein an amount of the dried matter or the artificial matter added in the addition step is 0.001 mg or more with respect to 100 ml of the metal solution.4. The method for recovering a metal or a ...

MODIFIED POLYAMINES GRAFTED TO A PARTICULATE, SOLID SUPPORT AS SORBENT MATERIALS FOR REMOVAL OF TARGET SUBSTANCES FROM FLUIDS

Provided are compositions for removal of a target substance from a fluid stream, the composition comprising a polyamine; and a covalently linked hydrophobic group, wherein the polyamine is covalently linked to a support material. Also provided are processes for removal of a target substance from a fluid stream comprising contacting the fluid stream with a composition comprising a polyamine; and a covalently linked hydrophobic group, wherein the polyamine is covalently linked to a support material. 1. A composition for removal of a target substance from a fluid stream , the composition comprising a polyamine; and a covalently linked hydrophobic group , wherein the polyamine is covalently linked to a support material.2. The composition of claim 1 , wherein the support material is comprised of a material selected from one or more of the group consisting of: lignocellulose; bacterial cellulose; microcrystalline cellulose; microfibrillated cellulose and a cellulose derivative.3. The composition of claim 2 , wherein the support material comprises a cellulose or lignocellulose powder or pulp.4. The composition of claim 3 , wherein the cellulose or lignocellulose powder or pulp is incorporated into a membrane or membrane-like filter.5. The composition of claim 1 , wherein the support material is selected from one or more of the group consisting of: silica; silica gel; and a silica derivative.6. The composition of any one of claim 1 , or claim 1 , wherein the support material is porous claim 1 , solid claim 1 , and particulate claim 1 , preferably wherein the average diameter size of the particles is greater than about 0.01 mm claim 1 , and less than about 1 mm.7. The composition of claim 6 , wherein the particulate form comprises one or more of the group consisting of a plurality of: granules; flakes; beads; pellets; and pastilles.8. The composition of any one of to claim 6 , wherein the polyamine is selected from a linear or branched polyamine.9. The composition of claim 8 ...

Lithium adsorption-desorption apparatus and lithium adsorption-desorption method using the same

Therefore, the lithium adsorption desorption apparatus can fix a large amount of lithium adsorbent and immerse it in a lithium-containing solution to effectively adsorb lithium and then quickly desorb lithium in a desorption solution, and can efficiently wash the lithium adsorbent in a cleaning solution.

METHOD FOR RECOVERING SCANDIUM

The method for recovering scandium pertaining to the present invention has: a first neutralization step for passing a solution containing scandium over an ion exchange resin, adding a neutralizing agent to the eluent eluted from the ion exchange resin and performing a neutralization treatment, and obtaining a primary neutralized sediment and a primary neutralized filtrate by solid-liquid separation; a second neutralization step for further adding a neutralizing agent to the primary neutralized filtrate and performing a neutralization treatment, and obtaining a secondary neutralized sediment and a secondary neutralized filtrate by solid-liquid separation; a hydroxide dissolution step for adding acid to the secondary neutralized sediment and obtaining a hydroxide solution; a solvent extraction step for subjecting the hydroxide solution to solvent extraction; and a scandium recovery step for recovering scandium oxide from a raffinate separated in the solvent extraction step. 1. A method of recovering scandium , comprising:a first neutralization step of allowing a solution containing scandium to pass through an ion exchange resin, adding a neutralizing agent to an eluate eluted from the ion exchange resin, performing a neutralization treatment, and obtaining a primary neutralized precipitate and a primary neutralized filtrate by solid-liquid separation;a second neutralization step of further adding a neutralizing agent to the primary neutralized filtrate, performing a neutralization treatment, and obtaining a secondary neutralized precipitate and a secondary neutralized filtrate by solid-liquid separation;a hydroxide dissolution step of adding an acid to the secondary neutralized precipitate to obtain a hydroxide solution;a solvent extraction step of subjecting the hydroxide solution to solvent extraction; anda scandium recovery step of recovering scandium oxide from a raffinate liquid separated in the solvent extraction step,wherein the secondary neutralized ...

Systems and Methods for Separating Radium from Lead, Bismuth, and Thorium

Systems for separating Ra from a mixture comprising at least Ra, Pb, Bi, and Th are provided. The systems can include: a first vessel housing a first media and Th or Bi; a second vessel in fluid communication with the first vessel, the second vessel housing a second media and Pb; and a third vessel in fluid communication with the second vessel, the third vessel housing a third media and Ra, wherein at least one of the first, second, or third medias are different from the other media. 1. A system for separating Ra from a mixture comprising at least Ra , Pb , Bi , and Th , the system comprising:a first vessel housing a first media and either Pb or Bi and/or Th; anda second vessel in fluid communication with the first vessel, the second vessel housing a second media and Ra, wherein the first media is different from the second media.2. The system of wherein the first media is associated with Bi and/or Th and comprises a quaternary amine on a polystyrene divinylbenzene copolymer.3. The system of wherein the second media is associated with Ra and comprises a silica support.4. The system of wherein the first media is associated with Pb and comprises 18-crown-6 and 1-octanol on Amberchrom CG-71 polymer support.5. The system of wherein the second media is associated with Ra comprises a on silica support.6. The system of wherein the first media size is less than 100 μm.7. The system of wherein the second media size is greater than 100 μm.8. A system for separating Ra from a mixture comprising at least Ra claim 1 , Pb claim 1 , Bi claim 1 , and Th claim 1 , the system comprising:a first vessel housing a first media and Th and/or Bi; anda second vessel in fluid communication with the first vessel, the second vessel housing a first media and Pb, wherein the first media is different from the second media.9. The system of wherein the first vessel is in fluid communication with raw material supply.10. The system of wherein the first vessel is in fluid communication with a wash ...

Combined Processing Method for Lithium Containing Solutions

A combined processing method for the purification of lithium containing solutions, the method comprising the method steps of passing a lithium containing solution to a first purification step in which the lithium containing solution is contacted with a titanate adsorbent whereby lithium ions are adsorbed thereon whilst rejecting substantially all other cations, the recovery of lithium from the adsorbent providing a part-purified lithium containing solution, the part-purified lithium containing solution produced in the first purification step is then passed in whole or part to a second purification step in which a graphene based filter medium is utilised to provide a further purified lithium containing solution. 141-. (canceled)42. A combined processing method for the purification of lithium containing solutions , the method comprising the method steps of passing a lithium containing solution to a first purification step in which the lithium containing solution is contacted with a titanate adsorbent whereby lithium ions are adsorbed thereon whilst rejecting substantially all other cations , the recovery of lithium from the adsorbent providing a part-purified lithium containing solution , the part-purified lithium containing solution produced in the first purification step is then passed in whole or part to a second purification step in which a graphene based filter medium is utilised to provide a further purified lithium containing solution.43. The method of claim 42 , wherein the lithium containing solution is a lithium containing brine.44. The method of claim 42 , wherein the adsorbent is provided in the form of either a hydrated titanium dioxide or a sodium titanate.45. The method of claim 42 , wherein the further purified lithium containing solution is a substantially pure lithium chloride solution.46. The method of claim 42 , wherein the brine contains impurities from the group of sodium claim 42 , potassium claim 42 , magnesium claim 42 , calcium and borate ...

Co-Current and Counter Current Resin-In-Leach in Gold Leaching Processes

A method and system are provided in which a gold and/or silver-collecting resin-in-leach circuit comprises both co-current and counter-current sections. 1. A method , comprising: leaching , by thiosulfate , a gold and/or silver-containing material in at least one of an ion-exchange resin-in-leach and ion-exchange resin-in-pulp circuit , the circuit comprising a co-current portion where the gold and/or silver-containing material and a gold and/or silver-collecting ion-exchange resin flow co-currently and a counter-current portion where the gold and/or silver-containing material and gold and/or silver-collecting ion-exchange resin flow counter-currently , wherein the gold and/or silver-containing material flows first through the co-current portion arid second through the counter-current portion , wherein the counter-current portion comprises a polythionate- and gold-and/or silver-loaded ion-exchange resin comprising one or more polythionates sorbed on the gold- and/or silver-loaded ion-exchange resin and wherein one of following is true:(i) wherein the polythionates comprise predominately a tetrathionate and/or other higher polythionates; or(ii) wherein the polythionates comprise predominately one or more trithionates.2. The method of claim 1 , wherein the co-current and counter-current portions do not share a common resin-in-leach or resin-in-pulp tank.3. The method of claim 1 , wherein at least most of the gold and/or silver in the co-current portion is collected by the ion-exchange resin in the co-current portion claim 1 , and wherein at least most of the gold and/or silver in the counter-current portion is collected by the ion-exchange resin in the counter-current portion.4. The method of claim 3 , wherein most or all of a gold and/or silver-loaded ion-exchange resin in the co-current portion is removed from a tank in the co-current portion and most or all of a gold and/or silver-loaded ion-exchange resin in the counter-current portion is removed from the counter- ...

Method and system for gold recovery

A method for recovering precious metal from an acidic pregnant solution resulting from halogen or hypohalite leaching of an ore, comprising lowering the ORP of the pregnant leachate with a reducing agent in the presence of slurried non-carboneous particles. The precious metal deposits on the surfaces of the particles and a barren solution comprising substantially all the halogen values of the pregnant solution in the form of sodium chloride, sodium bromide or hypohalites is recovered.

Process For Extracting Values from Lithium Slag

A process for extracting values from lithium slag comprising: (a) hydrothermally treating lithium slag with an aqueous solution of an alkaline compound at selected temperature and duration; (b) performing an ion exchange step on the alkaline treated lithium slag; and (c) recovering values selected from the group consisting of aluminium compounds, silicon compounds and compounds containing silicon and aluminium.

SULFONAMIDE-BASED SEPARATION MEDIA FOR RARE EARTH ELEMENT SEPARATIONS

A sulfonamide based rare earth element ion separation media and method of synthesis and use are provided. A bed or column of sulfonamide resin for separations can be prepared by exposing a sulfonate resin to chlorosulfonic acid to form a sulfonyl chloride resin; exposing the sulfonyl chloride resin to aqueous ammonia to form a sulfonamide resin; and then packing the sulfonamide resin into a separation column. Mixtures of lanthanide and other rare earth ions with very similar atomic radii and characteristics can be separated by flowing a mixture of lanthanide ions through a bed of sulfonamide resin followed by a mobile phase of an organic acid such as lactic acid to elute the separated rare earth element ions separated by the sulfonamide resin. Collected fractions of eluate can also be recycled through the sulfonamide media. 1. A method for separating rare earth element ions , the method comprising:flowing a solution containing a mixture of rare earth element ions through a bed of sulfonamide resin; andcollecting separated rare earth element ions from the sulfonamide resin bed.2. The method as recited in claim 1 , further comprising:exposing a sulfonate resin to chlorosulfonic acid to form a sulfonyl chloride resin;exposing the sulfonyl chloride resin to aqueous ammonia to form an unsubstituted sulfonamide resin; andfabricating a bed of unsubstituted sulfonamide resin.3. The method as recited in claim 2 , wherein said sulfonate resin is a resin selected from the group of resins consisting of polystyrene claim 2 , acrylic claim 2 , polyester and melamine.4. The method as recited in claim 2 , further comprising:exposing a second sulfonate resin to chlorosulfonic acid to form a second sulfonyl chloride resin;exposing the second sulfonyl chloride resin to aqueous ammonia to form a second sulfonamide resin; andfabricating a mixed bed of unsubstituted sulfonamide resin and second sulfonamide resin.5. The method as recited in claim 4 , wherein said second sulfonate resin is ...

Novel Radioresistant Alga of the Genus Coccomyxa

The invention relates to novel algae of the genus , in particular the algae of a new species called C-IR3-4C, and their use for capturing metals from aqueous media, and in particular from radioactive media. 116.-. (canceled)17Coccomyxa. A method of capturing at least one element from an aqueous medium containing said element , the method comprising incubating in the aqueous medium a unicellular green alga of the genus comprising , in the 18S ribosomal RNA-ITS1-5.8S , ribosomal RNA-ITS2-28S ribosomal RNA genes of having polynucleotide sequence at least 96% identity to the polynucleotide sequence of SEQ ID NO: 1 ,{'sup': 14', '3, 'wherein the at least one element is selected from the group consisting of Cs, Ag, Co, Mn, Sr, Cu, Cr, Zn, Ni, Fe, Sb, U, Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, an actinide, a lanthanide, the C radioisotope and the H radioisotope.'}18. The method of claim 17 , wherein the unicellular green alga is the Coccomyxa strain deposited with the Culture Collection of Algae and Protozoa (CCAP) under deposit number CCAP 216/26.19. The method of claim 17 , wherein that element is selected from the group consisting of Sr and Cu.20. The method of claim 17 , wherein said aqueous medium is radioactive medium.21. The method of claim 17 , wherein said aqueous medium is nonradioactive medium.22. The method of claim 20 , wherein the element is a metal selected from the group consisting of Ag claim 20 , Co claim 20 , Cs claim 20 , U claim 20 , Mn claim 20 , Cu and Sr claim 20 , wherein said metal is in the form of a radioactive isotope claim 20 , or in the form of a mixture of isotopes.23. The method of claim 17 , wherein said green algae are combined with at least one other microorganism and/or at least one multicellular plant.24. The method of claim 17 , wherein the growth of the unicellular green alga is controlled by regulating the illumination of said aqueous medium.25. The method of claim 17 , further comprising recovering said ...

POLYMER SURFACES HAVING A SILOXANE FUNCTIONAL GROUP

An apparatus for collecting mineral particles in a slurry or the tailings is disclosed, including a collection area or tank having one or more collection surfaces configured to contact with a mixture having water and valuable material, the valuable material having a plurality of mineral particles of interest; and a synthetic material provided at least on the one or more collection surfaces, the synthetic material having plurality of molecules with a siloxane functional group configured to attract the mineral particles of interest to the collection surfaces. The one or more collection surfaces includes a conveyor belt that is driven through the collection area or tank, through a release area or tank, back through the collection area or tank. The mixture includes a pulp slurry having ground ore with mineral particles of interest forming part thereof, including mineral particles of interest of about 500 microns or larger. 1. Apparatus comprising:a collection area or tank having one or more collection surfaces configured to contact with a mixture having water and valuable material, the valuable material having a plurality of mineral particles of interest; anda synthetic material provided at least on the one or more collection surfaces, the synthetic material having plurality of molecules with a siloxane functional group configured to attract the mineral particles of interest to the collection surfaces.2. Apparatus according to claim 1 , wherein the one or more collection surfaces includes claim 1 , or forms part of claim 1 , a conveyor belt also that is driven through the collection area or tank claim 1 , through a release area or tank claim 1 , back through the collection area or tank.3. Apparatus according to claim 1 , wherein the mixture includes claim 1 , or takes the form of claim 1 , a pulp slurry having ground ore with mineral particles of interest forming part thereof claim 1 , including mineral particles of interest of about 500 microns or larger.4. Apparatus ...

OPPORTUNITIES FOR RECOVERY AUGMENTATION PROCESS AS APPLIED TO MOLYBDENUM PRODUCTION

A copper/molybdenum separation processor is provide featuring a slurry/media mixture stage configured to receive a conditioned pulp containing hydrophobic molybdenite and hydrophilic copper, iron and other minerals that is conditioned with sodium hydrosulfide together with an engineered polymeric hydrophobic media, and provide a slurry/media mixture; and a slurry/media separation stage configured to receive the slurry/media mixture, and provide a slurry product having a copper concentrate and a polymerized hydrophobic media product having a molybdenum concentrate that are separately directed for further processing. The slurry/media mixture stage include a molybdenum loading stage configured to contact the conditioned pulp with the engineered polymeric hydrophobic media in an agitated reaction chamber, and load the hydrophobic molybdenite on the engineered polymeric hydrophobic media. 139-. (canceled)40. A method for separating copper and molybdenum comprising:receiving in a slurry/media mixture stage a conditioned pulp containing hydrophobic molybdenite and hydrophilic copper, iron and other minerals that is conditioned with sodium hydrosulfide together with an engineered polymeric hydrophobic media, and providing a slurry/media mixture;receiving in a slurry/media separation stage the slurry/media mixture, and providing a slurry product having a copper concentrate and a polymerized hydrophobic media product having a molybdenum concentrate that are separately directed for further processing; anddirecting with a media recovery stage forming part of the slurry/media separation stage the slurry product having the copper concentrate to a copper concentrate filtration stage and the polymerized hydrophobic media product to a media wash stage, the copper concentrate filtration stage having filters configured to provide the copper concentrate, and wherein the copper concentrate comprises the hydrophilic copper, and the polymerized hydrophobic media product comprises the ...

Treatment of degraded oxime metal extractants in process organic solutions

The invention relates to a method for regenerating the extractive potential of an organic hydroxyoxime-based extraction solution used in the recovery of metals by liquid-liquid extraction. The method is two-stage, in which a solid hydroxylamine is used in the reaction stage, and the removal of the undesirable compounds generated in the reaction occurs in the second stage by adsorption purification. The method of the invention is suitable for treatment of degraded oxime metal extractants in various process organic solutions both in aldehyde and ketoxime extractant solutions. The method can also be used to treat a mixture of degraded oxime extractants.

Biological Processing of Scrap Metal, Household Waste and/or Industrial Waste for the Isolation of Heavy Metals

The invention provides an assay for identifying a bacterium capable of binding elemental heavy metal, comprising the following steps: cultivating a test bacterium in a suitable first culture medium; immersing at least a surface portion of a test tool into the first culture medium for a second predetermined period of time, said surface portion being coated by elemental heavy metal, respectively; removing said test tool from said first culture medium and optionally rinsing the test tool; contacting a second culture medium with the surface portion coated by elemental heavy metal of said test tool removed in the previous step; and identifying the test bacterium as being capable of binding elemental heavy metal from growth of the test bacterium in said second culture medium. 1. A process of isolating or enriching a heavy metal present in a liquid medium , comprisinga step of incubating a suspension containing (i) particulate scrap metal, household waste and/or industrial waste containing a heavy metal in elemental form and (ii) biomass comprising a bacterium, or a combination of two or more bacteria, capable of binding the heavy metal;a step of separating the biomass having bound heavy metal from the suspension of the previous step; anda step of isolating the heavy metal from the biomass separated in the previous step.2. The process according to claim 1 , wherein said suspension contains the scrap metal claim 1 , household waste and/or industrial waste claim 1 , in the separating step claim 1 , in an amount of from 1 to 60% (w/w) based on the total weight of the suspension.3. The process according to claim 2 , wherein said suspension contains the scrap metal claim 2 , household waste and/or industrial waste in an amount of from 10 to 25% (w/w) based on the total weight of the suspension.4Pseudochrobactrum,Pseudochrobactrum asaccharolyticum, Bacillus subtilis, Bacillus pumilus, Pseudomonas fluorescens, Stenotrophomonas, preferably Stenotrophomonas maltophilia, Bacillus ...

METHOD AND SYSTEM FOR RECOVERY OF PRECIOUS METAL

A method and to an arrangement for recovery of precious metal. The method includes calculating a first electrical property of a slurry downstream of a retention screen in a first flow direction A either (i) based on a first difference between the first supplied current and the first received voltage, or (ii) based on a first difference between the first supplied voltage and the first received current, calculating a second electrical property of the slurry upstream of the retention screen either (i) based on a second difference between the second supplied current and the second received voltage, or (ii) based on a second difference between the second supplied voltage and the second received current, and calculating the adsorption particle content of the slurry upstream of the retention screen based on a difference between the first and the second electrical property. 142.-. (canceled)43. A method for recovery of precious metal , wherein the method comprising:arranging a plurality of adsorption vessels in series, wherein each adsorption vessel comprises a reactor space, a closed retention space within the reactor space, a retention screen between the reactor space and the closed retention space, first inlet means for feeding slurry containing precious metal into the reactor space, second inlet means for feeding adsorption particles into the reactor space, first outlet means for feeding slurry containing precious metal from the closed retention space, and second outlet means for feeding adsorption particles from the reactor space,feeding slurry containing precious metal into the reactor space of each adsorption vessel,feeding adsorption particles into the reactor space of each adsorption vessel, wherein precious metals are adsorbed onto the adsorption particles,moving the slurry through the plurality of adsorption vessels with a first drive system in a first flow direction A so that the slurry moves through the retention screen in the reactor space of at least one ...

ION EXCHANGE REACTOR WITH PARTICLE TRAPS FOR LITHIUM EXTRACTION

The present invention relates to the extraction of lithium from liquid resources such as natural and synthetic brines, leachate solutions from clays and minerals, and recycled products. For the extraction of lithium from the liquid resources, an ion exchange reactor has a tank, ion exchange particles, particle traps, and provision to modulate pH of the liquid resource. 1. An ion exchange reactor for generating a lithium eluate solution from a liquid resource , comprising:a) a tank;b) ion exchange particles that selectively absorb lithium from said liquid resource and elute said lithium eluate solution when treated with an acid solution after absorbing lithium from said liquid resource;c) one or more particle traps; andd) provision to modulate pH of said liquid resource.2. The ion exchange reactor of claim 1 , wherein said tank has a conical shape.3. The ion exchange reactor of claim 2 , wherein said conical shape allows said ion exchange particles to settle into a settled bed so that liquid can be removed from above said settled bed.4. The ion exchange reactor according to any one of - claim 2 , wherein modulation of said pH of said liquid resource occurs in the tank.5. The ion exchange reactor according to any one of - claim 2 , wherein modulation of said pH of said liquid resource occurs prior to injection of said liquid resource into the tank.6. The ion exchange reactor of claim 1 , wherein said one or more particle traps comprise one or more filters inside said tank.7. The ion exchange reactor according to any one of - claim 1 , wherein said one or more particle traps is located at the bottom of said tank.8. The ion exchange reactor according to any one of - claim 1 , wherein said one or more particle traps comprise one or more meshes.9. The ion exchange reactor according to any one of - claim 1 , wherein said one or more meshes comprise a pore space of less than about 200 microns.10. The ion exchange reactor according to any one of - claim 1 , wherein said one ...

Method of manufacturing nanoparticles using ion exchange resin and liquid reducing process

Provided is a method of manufacturing nanoparticles using an ion exchange resin and a liquid reducing process. The method includes (a) capturing a nanoparticle precursor from a solution in which impurities are mixed using an ion exchange resin, (b) washing and layer-separating the breakthrough ion exchange resin, (c) separating only the ion exchange resin in which the nanoparticle precursor is captured from the layer-separated ion exchange resin, and (d) putting the separated ion exchange resin into a mixture solution in which a reducing agent and a dispersing agent are mixed.

MANUFACTURING METHOD OF HIGH PURITY LITHIUM PHOSPHATE FROM THE WASTE LIQUID OF THE EXHAUSTED LITIUM-ION BATTERY

Provided is a method of manufacturing a high-purity lithium phosphate by utilizing a lithium waste liquid of a wasted battery. Lithium phosphate is manufactured and refined by using a minimized amount of sodium hydroxide and by using phosphate, lithium hydroxide, and an optimized pH condition, so that it is possible to manufacture high-purity lithium phosphate from which fine impurities which cannot be removed by cleaning are effective removed. A waste water treatment process of processing waste water as to be immediately discharged is integrated, so that the method is very efficient and environment-friendly. Therefore, since the high-purity lithium phosphate can be manufactured by utilizing a lithium waste liquid discarded in a wasted battery recycling process, the method has an effect in that the method is applied to a wasted battery recycling industry to prevent environmental pollution and facilitate recycling resources. 1. A method of manufacturing high-purity lithium phosphate by using a lithium waste liquid of a wasted battery , comprising steps of:(a) allowing the lithium waste liquid to pass through active carbon to remove organic materials;{'sub': 3', '4', '2', '4', '2', '4', '3', '4', '3', '4, '(b) adding a soluble phosphate including NaPO, NaHPO, NaHPO, KPO, or HPOor an aqueous solution of the soluble phosphate with 0.9 to 1.2 molar equivalents with respect to a concentration of lithium existing in the lithium waste liquid to the lithium waste liquid from which the organic materials are removed and adding an aqueous alkali including NaOH or KOH or an aqueous solution of the alkali to produce a mixed solution of phosphate and lithium waste liquid of which pH is in a range of 13 to 13.9;'}(c) reacting the mixed solution of phosphate and lithium waste liquid in a temperature range of 50 to 100° C. for 30 to 120 minutes, and after that, performing first solid liquid separation to produce lithium phosphate which is precipitated in a solid state;{'sub': 3', '4 ...

MANUFACTURING METHOD OF HIGH PURITY MANGANESE SULPHATE FROM THE WASTE LIQUID OF BATTERY RECYCLING PROCESS

Provided is a method of manufacturing high-purity, high-quality manganese sulfate which can be immediately used for manufacturing a lithium ion secondary battery from manganese sulfate waste liquid of a wasted battery. Since impurities are removed from the manganese sulfate waste liquid by using sulfides causing no secondary contamination in the manganese sulfate waste liquid and the manganese sulfate is manufactured by performing evaporation concentration through heating, the manufacturing method is very environment-friendly and economical. Since the manganese recovering process improving the manufacturing yield of the manganese sulfate and the waste water treatment process capable of recycling the source materials and discharging waste water are integrated, the manufacturing method is very efficient and environment-friendly. The manufacturing method is applied to the recycling industry, and thus, it is possible to obtain effects of preventing environmental pollution and facilitating recycling the resources. 1. A method of manufacturing high-purity manganese sulfate from manganese sulfate waste liquid of a wasted battery generated in a wasted battery recycling process , comprising:(a) producing manganese sulfate waste liquid from which an organic materials is removed by allowing the manganese sulfate waste liquid generated in a recycling process of the wasted battery to pass through active carbon;(b) adjusting pH of the organic-material-removed manganese sulfate waste liquid to be in a range of 4 to 7;(c) performing first solid liquid separation on the manganese sulfate waste liquid of which pH is adjusted to be in a range of 4 to 7 to separate first manganese sulfate filtrated liquid and first solid;(d) performing first evaporation concentration on the first manganese sulfate filtrated liquid in a temperature range of 90 to 100° C. to produce first manganese sulfate concentrated liquid;(e) cooling the first manganese sulfate concentrated liquid down to a ...

Method for the removal and recovery of metals and precious metals from substrates

A method for removing metal and/or precious metal-containing depositions from substrates, wherein said substrate is subjected to treatment with an organo amine protectant component P and an inorganic active component A. Component P may be formed in situ by reaction with component R. Component P is an organic amine and/or organic amine hydrochloride (preferably diisopropylamine hydrochloride), component A is an inorganic compound (preferably inorganic acid or a mixture thereof) and component R is an organic compound that can be split along the C- N bond by the component A into an organic amine (preferably di-methylformamide or N-methyl pyrrolidone). The metals in the form of organo-metallic complexes can be isolated and/or separated by means of different chemical reactions (preferably reduction reactions) and/or biosorption (preferably with seaweed or yeast).

Method for producing lithium hydroxide monohydrate from brines

A method for LiOHH2O production from lithium-bearing multicomponent hydromineral raw materials includes filtering lithium-bearing brine contaminated with suspended particles with regeneration of filters and processing of used regenerate, and obtaining pregnant lithium-bearing brine, isolation of lithium chloride from the brine in the form of a primary concentrate in sorption-desorption modules, and nanofiltration of the primary lithium concentrate from magnesium, calcium and sulfate ions. By means of reverse osmosis, electrodialysis concentration and ion-exchange purification from impurities followed by thermal concentration, the primary lithium concentrate is converted into a pregnant lithium chloride concentrate which is converted into a LiOH solution by membrane electrolysis. The LiOH solution is boiled down, resulting in LiOH.H2O crystallization.

PROCESS FOR MAKING MODIFIED DTPA-ASSOCIATED ORGANOSILICA MEDIA FOR USE IN SOLID-LIQUID EXTRACTION OF RARE EARTH ELEMENTS

A process for making modified diethylenetriaminepentaacetic acid (DTPA)-associated media for use in solid-liquid extraction of rare earth elements is disclosed. The process includes functionalizing DTPA with hydrophobic groups to form modified DTPA; dissolving the modified DTPA into a methanol solution; loading the modified DTPA solution to a solid support; rotating the modified DTPA-loaded solid support to allow for association; and removing the methanol to obtain the modified-DTPA-associated media. 1. A modified DTPA-associated media for use in solid-liquid extraction , comprising modified diethylenetriaminepentaacetic acid (DTPA) chemically associated with a solid support , wherein the modified DTPA includes DTPA functionalized with hydrophobic groups.2. The modified DTPA-associated media of claim 1 , wherein the solid support is an organosilica platform.3. The modified DTPA-associated media of claim 1 , wherein the hydrophobic groups includes one or more alkyl groups.4. The modified DTPA-associated media of claim 1 , wherein the hydrophobic groups includes two hydrophobic ethylhexyl groups.6. A process for making modified diethylenetriaminepentaacetic acid (DTPA)-associated media for use in solid-liquid extraction of rare earth elements claim 1 , comprising:functionalizing DTPA with hydrophobic groups to form modified DTPA;dissolving the modified DTPA into a methanol solution;loading the modified DTPA solution to a solid support;rotating the modified DTPA-loaded solid support to allow for association; andremoving the methanol to obtain the modified-DTPA-associated media.7. The process of claim 6 , wherein the hydrophobic groups one or more alkyl groups.8. The process of claim 6 , wherein the hydrophobic groups includes two hydrophobic ethylhexyl groups.10. The process of claim 6 , wherein the solid support comprises an organosilica platform.11. The process of claim 6 , wherein rotating the modified DTPA-loaded solid support includes centrifuging the modified ...

Methods of producing enriched scandium-47, and related systems and apparatuses

A method of producing enriched 47 Sc comprises irradiating a V structure comprising 51 V with at least one incident photon beam having an endpoint energy within a range of from about 14 MeV to about 44 MeV to convert at least some of the 51 V to 47 Sc and form a 47 Sc-containing structure. The 47 Sc of the 47 Sc-containing structure is separated from additional components of the 47 Sc-containing structure using a chromatography process. Systems and apparatuses for producing enriched 47 Sc are also described.

Functionalized Adsorbents for the Recovery of Rare Earth Elements from Aqueous Media

The disclosure relates to the design and synthesis of selected ligands, dendrimers, polymers and other solid phase substrates for selective chelation of rare earth elements (i.e. lanthanides), and use of those selective ligands for synthesis of resins, polymers and other types of solid supports for separation and recovery of lanthanides from aqueous media. Recovery of critical elements from aqueous media occurs in a simple two-step process: pre-concentration of REE on the adsorbent and recovery by acid elution. The present invention can be used for design of selective ligands immobilized on solid substrates for extraction of various constituents, such as lanthanides, actinides, radionuclides, trace metals, etc., from aqueous media. 1. A method of recovering a rare earth element from aqueous media , comprising: a substrate, and', 'a material attached to a surface of the substrate, wherein the material selectively binds with at least one rare earth element;, 'providing an adsorbent, wherein the adsorbent comprisesexposing the adsorbent to the aqueous media, wherein the rare earth element binds to the material on the surface of the substrate;rinsing the adsorbent in an acid; andrecovering the rare earth element from the acid.2. The method of claim 1 , further comprising:exposing the adsorbent to the aqueous media after rinsing the adsorbent in the acid;rinsing the adsorbent again in a second acid; andrecovering the rare earth element from the second acid.3. The method of claim 1 , wherein the material is an ion imprinted polymer.4. The method of claim 1 , wherein the material is a ligand.5. The method of claim 4 , wherein the ligand is selected from the group consisting of diethylenetriaminepentaacetic acid claim 4 , diethylenetriaminepentaacetic dianhydride claim 4 , phosphonoacetic acid claim 4 , and N claim 4 ,N-bisphosphono(methyl)glycine.6. The method of claim 1 , wherein the substrate is silica gel.7. The method of claim 6 , wherein the silica gel contains ...

Process for Gold and/or Platinum Group Metals Heap Leaching with Lime

Process for gold and/or platinum group metals heap leaching comprising irrigating a heap with an irrigation solution containing sodium cyanide for leaching gold and/or platinum group metals from a gold and/or platinum group metals containing ore. A lime reagent is added by feeding a fine particle lime suspension containing lime particles in an aqueous phase in an irrigation solution.

METHOD FOR PLATINUM RECOVERY FROM MATERIALS CONTAINING RHENIUM AND PLATINUM METALS

The present disclosure relates to hydrometallurgical methods for the isolation and recovery of platinum from rhenium-containing materials, and more particularly, from superalloys containing rhenium, platinum, and other metals. The disclosure also relates to apparatuses capable of carrying out the hydrometallurgical methods and the product streams generated from the methods and apparatuses. 1. A method of separating platinum and rhenium comprising the steps of:contacting a liquid comprising platinum and rhenium and a chelating ion exchange resin; andadsorbing the platinum onto the chelating ion exchange resin,further comprising, prior to the step of contacting the liquid comprising platinum and rhenium and a chelating ion exchange resin, the steps of:digesting an alloy feed comprising platinum and rhenium in a complexing ligand comprising halides in an amount sufficient to complex the platinum present in the alloy feed; andseparating resulting solids from the liquid comprising platinum and rhenium,wherein a concentration of rhenium and/or platinum in the resulting solids is from 50 to 100% lower than a concentration of rhenium and/or platinum in the alloy feed,the method further comprising, following the step of contacting the liquid comprising platinum and rhenium and a chelating ion exchange resin, obtaining a liquid stream comprising a higher relative concentration of rhenium to platinum than a relative concentration of rhenium to platinum in the liquid comprising platinum and rhenium.2. (canceled)3. The method of claim 1 , wherein the chelating ion exchange resin is functionalized with thiourea or thiouronium groups.4. The method of claim 1 , wherein the pH of the liquid comprising platinum and rhenium is below 5.5. The method of claim 1 , wherein the complexing ligand is selected from the group consisting of hydrochloric acid claim 1 , a chloride containing salt claim 1 , bromine and bromide salts claim 1 , or chlorine.6. The method of claim 1 , wherein the step ...

METHODS AND COMPOSITIONS FOR RECOVERY OF LITHIUM FROM LIQUID SOLUTIONS WITH NANOPARTICLES

The present disclosure relates, according to some embodiments, to a method for recovery of lithium ions from a lithium-ion containing liquid, the method comprising the steps of coating a nanoparticle with a styrene monomer; polymerizing the styrene monomer to form a poly-styrene-coated nanoparticle; attaching a dibenzo-12-crown-4-ether to the polystyrene-coated nanoparticle to form a lithium adsorbing medium; exposing the lithium ion-containing liquid to the lithium adsorbing medium to form a lithium-rich adsorbing medium; and extracting the lithium ion from the lithium-rich adsorbing medium. 1. A method for recovery of lithium ions from a lithium-ion containing liquid , the method comprising:coating a nanoparticle with a styrene monomer;polymerizing the styrene monomer to form a polystyrene-coated nanoparticle;attaching a crown ether to the polystyrene-coated nanoparticle to form a lithium adsorbing medium;exposing the lithium ion-containing liquid to the lithium adsorbing medium to form a lithium-rich adsorbing medium and a lithium-depleted liquid; andextracting the lithium ion from the lithium-rich adsorbing medium to form an extracted lithium ion and a recycled lithium-adsorbing medium.2. The method of claim 1 , wherein the nanoparticle has a surface area from about 10 square meters per gram to about 5 claim 1 ,000 square meters per gram.3. The method of claim 1 , wherein the nanoparticle has a surface area from about 100 square meters per gram to about 500 square meters per gram.4. The method of claim 1 , wherein the nanoparticle includes a ferrous material.5. The method of claim 4 , further comprising magnetically separating the lithium-rich adsorbing medium from the lithium-depleted liquid.6. The method of claim 1 , wherein the nanoparticle includes a non-magnetic iron.7. The method of claim 1 , wherein extracting the lithium ion from the lithium-rich adsorbing medium includes treating the lithium-rich adsorbing medium with a weak acid.8. The method of claim ...

BIOLOGICAL ORE PROCESSING FOR THE ISOLATION OF HEAVY METALS

The invention provides an assay for identifying a bacterium capable of binding elemental heavy metal, comprising the following steps: cultivating a test bacterium in a suitable first culture medium; immersing at least a surface portion of a test tool into the first culture medium for a second predetermined period of time, said surface portion being coated by elemental heavy metal, respectively; removing said test tool from said first culture medium and optionally rinsing the test tool; contacting a second culture medium with the surface portion coated by elemental heavy metal of said test tool removed in the previous step; and identifying the test bacterium as being capable of binding elemental heavy metal from growth of the test bacterium in said second culture medium. 1. An assay for identifying a bacterium capable of binding elemental heavy metal such as gold and/or silver , comprising the following steps:(i) cultivating a test bacterium in a suitable first culture medium;(ii) immersing at least a surface portion of a test tool into the first culture medium for a second predetermined period of time, said surface portion being coated by the elemental heavy metal, respectively;(iii) removing said test tool from said first culture medium and optionally rinsing the test tool;(iv) contacting a second culture medium with the surface portion coated by the elemental heavy metal of said test tool removed in the previous step; and(v) identifying the test bacterium as being capable of binding the elemental heavy metal from growth of the test bacterium in said second culture medium.2. The assay of claim 1 , wherein said container is part of a multi-well plate and said test tool is a pin on the cover lid of the multi-well plate claim 1 , said pin being coated by the elemental heavy metal claim 1 , preferably elemental silver or gold claim 1 , at least on a tip portion of the pin claim 1 , wherein said pin extends downwards from the cover lid into said container such that the ...

SYSTEM AND METHOD FOR PROCESSING AND CONCENTRATING SELECTED IONS IN BRINE SOLUTIONS

An apparatus and method for recovering metal from a solution comprising a metal-selective sorbent disposed in a column. Additional embodiments provide for using a metal-selective membrane configured for selective transport, isolation, retention, and recovery of metal ions and compounds; electrodialysis and forward osmosis apparatuses to recover metal from a solution. A modular system to process a solution at a remote field site is disclosed. The process is a green process and produces limited to no industrial waste. 170-. (canceled)72. The method of wherein the transporting of at least a portion of the metal eluate across the forward osmosis membrane is driven by an osmotic pressure.73. The method of further comprising contacting the forward osmosis membrane with a draw solution.74. The method of wherein the draw solution comprises a carbonate.75. The method of wherein the draw solution comprises a bicarbonate.76. The method of further comprising converting the metal eluate to a metal carbonate.77. The method of wherein the metal carbonate comprises lithium carbonate.78. The method of further comprising recovering the metal carbonate.79. The method of wherein the metal carbonate is recovered in sufficient quantity to provide a conversion rate of at least about 80%.80. The method of wherein the metal carbonate is recovered at a temperature of at least about 35° C.81. The method of further comprising contacting the metal eluate with a draw solution.82. The method of wherein contacting the metal eluate with a draw solution converts the metal eluate to a metal carbonate.83. The method of further comprising contacting the metal eluate with a metal-selective membrane.84. An apparatus for recovering at least one metal from a solution claim 71 , said apparatus comprising:a first filter system for containing a first solution and a second solution, wherein said first filter system comprises a forward osmosis module comprising a forward osmosis membrane; anda second filter ...

MERCURY REMOVAL

Disclosed is selective removal of mercury from aqueous feeds also including precious metals. In particular, the present invention is useful for removal of mercury from processing waters produced during precious metal mining processes. The process includes contacting the aqueous feed solution with a solid sorbent material including thiol and/or thiolate functional groups, wherein (i) the aqueous feed solution includes at least 10 ppm of free cyanide ions; and/or (ii) the sorbent material is contacted with an aqueous cyanide solution after contact with the aqueous feed solution to selectively desorb precious metal from the sorbent material. 1. A process for selectively removing mercury from an aqueous feed solution , the aqueous feed solution comprising mercury in addition to one or more precious metals , wherein the process comprises contacting the aqueous feed solution with a solid sorbent material comprising thiol and/or thiolate functional groups , wherein(i) the aqueous feed solution comprises at least 10 ppm of free cyanide ions; and/or(ii) the sorbent material is contacted with an aqueous cyanide solution after contact with the aqueous feed solution to selectively desorb precious metal from the sorbent material.2. A process according to wherein the precious metal present in the aqueous feed solution is one or both of gold and silver.3. A process according to wherein the mercury is present as a mercury cyanide complex and each precious metal is present as a precious metal cyanide complex.4. A process according to wherein the aqueous feed solution comprises at least 30 ppm of free cyanide ions.5. A process according to wherein the aqueous cyanide solution comprises at least 30 ppm of cyanide ions.6. A process according to wherein the process further comprises the step of adding cyanide ions to the aqueous feed solution.7. A process according to wherein the aqueous feed solution has a pH in the range from 9 to 13.8. A process according to where in the sorbent ...

METHOD FOR TREATING SOLUTION CONTAINING RARE EARTH

The present invention provides a treating method for a solution containing rare earth, wherein the method comprising: (1) performing a fine-grained clay adsorption on the solution containing rare earth with fine-grained clay, the conditions of the fine-grained clay adsorption allow that solution adsorbed by said fine-grained clay contains rare earth with a concentration calculated by rare earth oxides not higher than 1 mg/L; (2) performing a coarse-grained clay adsorption on the solution adsorbed by said fine-grained clay with coarse-grained clay, the conditions of coarse-grained clay adsorption allow that solution adsorbed by said coarse-grained clay contains rare earth with a concentration calculated by rare earth oxides not higher than 0.5 mg/L; the grain diameter of at least 90% of said fine-grained clay particles is smaller than the grain diameter of said coarse-grained clay particles, and the grain diameter of said fine-grained clay is within a range of 1-250 μm, and the grain diameter of said coarse-grained clay is within a range of 150-1,000 μm; and (3) desorbing rare earth from said fine-grained clay undergone the fine-grained clay adsorption and said coarse-grained clay undergone the coarse-grained clay adsorption. The rare earth may be effectively recycled by applying the above method. 1. A treating method for a solution containing rare earth , wherein the method comprises:(1) performing a fine-grained clay adsorption on the solution containing rare earth with fine-grained clay, the conditions of the fine-grained clay adsorption allow that solution adsorbed by said fine-grained clay contains rare earth with a concentration calculated by rare earth oxides not higher than 1 mg/L;(2) performing a coarse-grained clay adsorption on the solution adsorbed by said fine-grained clay with coarse-grained clay, the conditions of the coarse-grained clay adsorption allow that solution adsorbed by said coarse-grained clay contains rare earth with a concentration ...

PROCESSES FOR RECOVERING RARE EARTH ELEMENTS FROM ALUMINUM-BEARING MATERIALS

The present disclosure relates to processes for recovering rare earth elements from an aluminum-bearing material. The processes can comprise leaching the aluminum-bearing material with an acid so as to obtain a leachate comprising at least one aluminum ion, at least one iron ion, at least one rare earth element, and a solid, and separating the leachate from the solid. The processes can also comprise substantially selectively removing at least one of the at least one aluminum ion and the at least one iron ion from the leachate and optionally obtaining a precipitate. The processes can also comprise substantially selectively removing the at least one rare earth element from the leachate and/or the precipitate. 1. A process for recovering at least one rare earth element and/or at least one rare metal from an aluminum-bearing material , said process comprising:leaching said aluminum-bearing material with an acid so as to obtain a leachate comprising at least one aluminum ion, at least one iron ion, said at least one rare earth element and/or said at least one rare metal, and a solid, and separating said leachate from said solid;substantially selectively removing said at least one aluminum ion from said leachate by carrying out a precipitation, by carrying out a liquid-liquid extraction, by using a hollow-fiber membrane, by using an extracting agent and/or by using an ion exchange resin, thereby obtaining a composition comprising said at least one iron ion, and said at least one rare earth element and/or said at least one rare metal;substantially selectively at least partially removing said at least one iron ion from said composition by carrying out a precipitation, by carrying out a liquid-liquid extraction, by using a hollow-fiber membrane, by using an extracting agent, by carrying out a hydrolysis and/or by using an ion exchange resin, thereby obtaining a liquor comprising said at least one rare earth element and/or said at least one rare metal; andsubstantially ...

METHOD FOR PROCESSING ORE OR REFINING INTERMEDIATE

A method for processing ores containing gold or refining intermediates containing gold, the refining intermediate being obtained by subjecting the ores to a refining process, wherein the method includes: a leaching step of leaching gold from the ores or the refining intermediates using a sulfate solution containing iodide ions and iron (III) ions as a leaching solution; an adsorption step of adsorbing iodine and gold in the leached solution obtained in the leaching step on activated carbon; and an iodine separation step of separating iodine from the activated carbon while leaving gold on the activated carbon that has undergone the adsorption step. 1. A method for processing ores containing gold or refining intermediates containing gold , the refining intermediate being obtained by subjecting the ores to a refining process ,wherein the method comprises: a leaching step of leaching gold from the ores or the refining intermediates using a sulfate solution containing iodide ions and iron (III) ions as a leaching solution; an adsorption step of adsorbing iodine and gold in the leached solution obtained in the leaching step on activated carbon; and an iodine separation step of separating iodine from the activated carbon while leaving gold on the activated carbon that has undergone the adsorption step.2. The method for processing ores or refining intermediates according to claim 1 , wherein iodine is separated using a sulfurous acid solution in the iodine separation step.3. The method for processing ores or refining intermediates according to claim 1 , wherein an iodine concentration in the leaching solution is from 10 mg/L to 10000 mg/L in the leaching step.4. The method for processing ores or refining intermediates according to claim 1 , further comprising a gold separation step of separating gold from the activated carbon from which iodine has been separated in the iodine separation step.5. The method for processing ores or refining intermediates according to claim 1 , ...

LIGAND ASSISTED CHROMATOGRAPHY FOR METAL ION SEPARATION

A method of producing substantially pure rare earth elements (REEs) from a mixture, including the steps of dissolving a mixture containing REEs in a strong acid to result in a dissolved mixture of metal ions, including that of REEs, capturing metal ions of REEs in a first set of chromatographic columns comprising strong acid cation exchange resins, washing said first set of chromatographic columns with a salt solution to remove non-adsorbing metal ions, eluting metal ions of REES from said first set of chromatographic columns with a first ligand solution to result in a solution of enriched metal ions of REEs, loading said solution of enriched metal ions of REEs onto a second set of chromatographic columns, and eluting bound metal ions of REEs stepwise from said second set of chromatographic columns using a second ligand solution to afford a substantially pure REE. The second set of chromatographic columns comprises hydrous polyvalent metal oxide selected from the group consisting of TiO, ZrO, or SnO. The ligand of the second ligand solution coordinates with said hydrous polyvalent metal oxide. 1. A method of producing substantially pure rare earth elements (REEs) from a mixture comprising:a. dissolving a mixture containing REEs in a strong acid to result in a dissolved mixture of metal ions, including that of REEs;b. capturing metal ions of REEs in a first set of chromatographic columns comprising strong acid cation exchange resins;c. washing said first set of chromatographic columns with a salt solution to remove non-adsorbing metal ions;d. eluting metal ions of REES from said first set of chromatographic columns with a first ligand solution to result in a solution of enriched metal ions of REEs;e. loading said solution of enriched metal ions of REEs onto a second set of chromatographic columns; and{'sub': 2', '2', '2, 'f. eluting bound metal ions of REEs stepwise from said second set of chromatographic columns using a second ligand solution to afford a ...

ADSORBENT PARTICLES, BASE PARTICLE, PACKED COLUMN, AND METHOD FOR RECOVERING RARE-EARTH ELEMENT

Adsorbent particles each containing: a carrier particle containing an organic polymer containing a monomer unit derived from a styrene-based monomer; a hydrophilic organic compound adhered to a surface of the carrier particle; and a diglycolic acid residue bonded to the hydrophilic organic compound. When a BET specific surface of the adsorbent particles as determined by adsorption of nitrogen gas is Xand a BET specific surface area of the adsorbent particles as determined by adsorption of water vapor is X, X/Xis 0.10 to 1.0. 1. Adsorbent particles , each comprising:a carrier particle comprising an organic polymer comprising a monomer unit derived from a styrene-based monomer;a hydrophilic organic compound adhered to a surface of the carrier particle; anda diglycolic acid residue bonded to the hydrophilic organic compound,{'sub': 0', '1', '1', '0, 'wherein when a BET specific surface area of the adsorbent particles as determined by adsorption of nitrogen gas is Xand a BET specific surface area of the adsorbent particles as determined by adsorption of water vapor is X, X/Xis 0.10 to 1.0.'}2. The adsorbent particles according to claim 1 , wherein the carrier particle is a porous polymer particle.3. The adsorbent particles according to claim 1 , wherein the hydrophilic organic compound is an amino group-containing polymer comprising a constituent unit having an amino group claim 1 , and the glycolic acid residue is bonded to the amino group.4. The adsorbent particles according to claim 3 , wherein a quantity of the amino group in the adsorbent particles is 0.1 to 100 mmol per 1 g of the adsorbent particles.5. The adsorbent particles according to claim 1 , wherein the adsorbent particles are configured to recover a rare earth element.6. Base material particles claim 1 , each comprising:a carrier particle comprising an organic polymer comprising a monomer unit derived from a styrene-based monomer; anda hydrophilic organic compound adhered to a surface of the carrier ...

A sensor system

Contemplated is a sensor system for use with a measuring device. The measuring device being of the type adapted to measure the volume of a desired solid component in a sample volume of a solid-liquid slurry obtained from either a carbon-in-pulp or carbon-in-leach process. The solid-liquid slurry comprises granular carbon particles, ore pulp, and water. The carbon-in-pulp or carbon-in-leach process includes at least one retention tank. The measurement device including: a receptacle for receiving the sample volume of the slurry; a screen provided in the receptacle for separating out the desired solid component from a remainder of the slurry. The solid component is retained in the receptacle to form a bed therein and the remainder is exhausted from the receptacle. The sensor system measures in either the retained solid component, or the exhausted remainder, or both one of: pH; dissolved oxygen; pulp density or carbon content.

Method for lithium processing

A method for improved processing of lithium metallurgical solutions comprises the steps of: i. Directing a lithium leach solution containing magnesium to an electrochemical magnesium removal step to form a magnesium depleted lithium leach solution; ii. Directing the magnesium depleted lithium leach solution of step i) to downstream concentration and recovery processes wherein the electrochemical magnesium removal step is a 3-chamber electrochemical configuration to produce magnesium hydroxide precipitate and a separate hydrochloric acid stream, as recoverable by-products.

METHODS AND SYSTEMS OF METAL SORPTION USING INTERSTAGE SCREENING

Embodiments of the present invention include systems and methods that include a sorption vessel containing a pulp including an aqueous slurry and a sorbent, a screening system at least partially submerged within the pulp and including a housing and a vibratory screening machine including a compression assembly and a screen assembly. The aqueous slurry includes a metal that is adsorbed by the sorbent to form an oversized material in the pulp. The compression assembly compresses the screen assembly into a concave shape and the screen assembly is inclined such that the pulp if fed over a first inclined portion of the screen assembly and the oversized materials are conveyed over a second inclined portion of the screen assembly and removed from the system or conveyed back into the sorption vessel. The undersized material passes through the screen assembly into a portion of the housing separate from the pulp and is discharged to another sorption vessel. 1. A system , comprising:a sorption vessel containing a pulp including an aqueous slurry and a sorbent; anda screening system at least partially submerged within the pulp and including a housing and a vibratory screening machine including a compression assembly and a screen assembly,wherein the aqueous slurry includes a metal that is adsorbed by the sorbent to form an oversized material in the pulp,wherein the compression assembly compresses the screen assembly into a concave shape and the screen assembly is inclined such that the pulp if fed over a first inclined portion of the screen assembly and the oversized materials are conveyed over a second inclined portion of the screen assembly and removed from the system or conveyed back into the sorption vessel,wherein undersized material passes through the screen assembly into a portion of the housing separate from the pulp and is discharged to another sorption vessel.2. The system of claim 1 , wherein the aqueous slurry and sorbent are independently fed into the sorption ...

ENGINEERED YEAST AS A METHOD FOR BIOREMEDIATION

Metal bioremediation and metal mining strategies can include compositions and methods. 167-. (canceled)68. A composition for remediating a metal to treat water comprising:a cell expressing a membrane metal transporter, wherein the membrane metal transporter has specificity for a metal;a vacuole transporter; anda metal sequestration protein.69. The composition of claim 68 , wherein the cell is yeast.70. The composition of claim 69 , wherein an ubiquitination ligase is deleted in the yeast.71. The composition of claim 69 , wherein the ubiquitination ligase is BSD2.72. The composition of claim 68 , wherein the membrane transporter is SMF1.73. The composition of claim 68 , wherein the vacuole transporter is CCC1.74. The composition of claim 68 , wherein the metal sequestration protein is a phytochelatin synthase.75. The composition of claim 72 , wherein SMF1 is mutated to be sensitive to the metal.76. The composition of claim 75 , wherein the metal is strontium claim 75 , lead or mercury.77. The composition of claim 72 , wherein SMF1 is mutated to destroy primary ubiquitination sites.78. The composition of claim 68 , wherein the membrane transporter is Sul1 or Sul2.79. The composition of claim 78 , wherein the metal is chromate.80. The composition of claim 68 , wherein the membrane transporter is CTR1.81. The composition of claim 80 , wherein the metal is copper.82. The composition of claim 68 , wherein the membrane transporter is ZRT1.83. The composition of claim 82 , wherein the metal is zinc.84. The composition of claim 68 , wherein the membrane transporter is FRE1.85. The composition of claim 84 , wherein the metal is iron.86. A method of remediating a metal to treat water comprising: a cell expressing', 'a membrane metal transporter, wherein the membrane metal transporter has specificity for a metal;', 'a vacuole transporter; and', 'a metal sequestration protein; and, 'preparing a composition comprisingcontacting water with the composition.87. The method of claim ...

Underwater holding-type lithium recovering apparatus and method thererof

Provided is an underwater holding-type lithium recovering apparatus 1000 including: an underwater holder 100 installed on an offshore sea bed; a lithium adsorbent 200 held in the underwater holder 100 and adsorbing lithium ions contained in seawater; a moving ship 300 installed with a cleaning tank 320 cleaning the lithium adsorbent 200 transferred from the underwater holder 100 and a desorbing tank 330 desorbing lithium ions adsorbed in the lithium adsorbent 200 transferred from the cleaning tank 320 , and moved to a coastline when lithium ions of a reference value or more are filled in the desorbing tank 330 ; and a transfer pump 400 transferring lithium ions filled in the desorbing tank 330 to a reservoir 500 installed at the coastline.

Vanadium Recovery Method, Method for Producing Electrolytic Solution for Redox Flow Batteries, Vanadium Recovery Device, and Device for Producing Electrolytic Solution for Redox Flow Batteries

The present invention is characterized by comprising: an acid leaching step for obtaining a leach liquid by causing leaching of, by means of an acid, a metal mixture at least containing vanadium and at least one type of a divalent or trivalent metal selected from nickel, cobalt, manganese, palladium, platinum, copper, and zinc; a complex generation step for adding an ammoniacal alkaline aqueous solution to the leach liquid for adjusting the pH to 10-12 and generating, in the alkaline aqueous solution, an ammine complex of a divalent or trivalent metal ion and an anion complex of a tetravalent and/or pentavalent vanadium ion; a divalent or trivalent metal recovery step for adding a carrier having a carboxyl group to the alkaline aqueous solution in which the ammine complex and the anion complex are generated, causing the divalent or trivalent metal ion in the ammine complex to be selectively adsorbed onto the carrier, and recovering the divalent or trivalent metal ion; and a vanadium recovery step for recovering vanadium from the anion complex contained in the alkaline aqueous solution after the divalent or trivalent metal ion is recovered. 1. A method for recovering vanadium from a metal mixture at least containing vanadium and at least one kind of a divalent or trivalent metal selected from nickel , cobalt , manganese , palladium , platinum , copper and zinc , which comprises:an acid leaching step for leaching the metal mixture with an acid to obtain a leach liquid;a complex generating step for adding an ammoniacal alkaline aqueous solution to the leach liquid to adjust the pH to 10-12 and generating an ammine complex of a divalent or trivalent metal ion and an anion complex of a tetravalent and/or pentavalent vanadium ion in the alkaline aqueous solution;a divalent or trivalent metal recovery step for adding a carrier having a carboxyl group to the alkaline aqueous solution in which the ammine complex and the anion complex are generated, causing the divalent or ...

Porous graft copolymer particles, method for producing same, and adsorbent material using same

Provided are graft copolymer particles enabling introduction of adsorptive functional groups adsorbing metals and others, a method for producing same, and an adsorbent using same. (1) Porous graft copolymer particles containing graft chains introduced into porous particles (particle surface having an average pore diameter of 0.01-50 μm) including at least one resin selected from olefin resins, water-insoluble modified polyvinyl alcohol resins, amide resins, cellulosic resins, chitosan resins and (meth)acrylate resins. (2) A method for producing porous graft copolymer particles including (I) melt-kneading a polymer A and a polymer B other than the polymer A to obtain a compound material, (II) extracting and removing the polymer B from the compound material to obtain a porous material of the polymer A, (III) granulating the porous material, and (IV) introducing graft chains into the porous particles. (3) An adsorbent of porous graft copolymer particles.

POLYMERIC CHELATORS FOR METAL ION EXTRACTION AND SEPARATION

The present invention provides a polymeric extractant with pendant chelator groups for selective sequestration of actinides and/or lanthanides comprising: a first block polymer comprising one or more CMPO monomers each having a first backbone bound to a pendant carbomylmethylphosphine oxide group; a second block polymer comprising one or more second monomers each having a second backbone bound to a second pendant group, wherein the first backbone is polymerized to the second backbone to form a polymer backbone with pendent blocks of the second pendant group and pendent blocks of pendent carbomylmethylphosphine oxide group that sequester the actinides and/or lanthanides; and optionally a third block polymer comprising one or more third monomers each having a third backbone bound to a third pendant group, wherein the one or more third monomers is polymerized to the first backbone and the second backbone. 1. A multi-block polymer composition for selective sequestration and separation of actinides and/or lanthanides comprising:a first block polymer comprising one or more CMPO monomers each having a first backbone bound to a pendant carbomylmethylphosphine oxide group; anda second block polymer comprising one or more second monomers each having a second backbone bound to a second pendant group, wherein the first backbone is polymerized to the second backbone to form a polymer backbone with pendent blocks of the second pendant group and pendent blocks of pendent carbomylmethylphosphine oxide group that sequester the multivalent ions.2. The composition of claim 1 , wherein the actinides and/or lanthanides are selected from Th claim 1 , La claim 1 , Eu claim 1 , and Ce.3. The composition of claim 1 , wherein the actinides and/or lanthanides are Th.4. The composition of claim 1 , wherein the multi-block polymer composition is in solution claim 1 , in suspention or disposed on a porous inert resin or silica support.5. The composition of claim 1 , wherein the ratio of one or ...

Method for the Removal and Recovery of Metals and Precious Metals from Substrates

A method for removing metal and/or precious metal-containing depositions from substrates, wherein said substrate is subjected to treatment with an organo amine protectant component P and an inorganic active component A. Component P may be formed in situ by reaction with component R. Component P is an organic amine and/or organic amine hydrohalide and/or organic ammonium halide (preferably diisopropylamine hydrochloride), component A is an inorganic compound (preferably inorganic acid or a mixture thereof) and component R is an organic compound that can be split along the C—N bond by the component A into an organic amine (preferably dimethylformamide or N-methyl pyrrolidone). The metals in the form of organo-metallic complexes and/or metalorganic compounds are isolated and/or separated by means of different chemical reactions (preferably reduction reactions) and/or biosorption (preferably with seaweed or yeast). The isolated and/or separated organo-metallic complexes and/or metalorganic compounds are subjected to refinement process to form pure metals and/or pure precious metals. The substrates remain intact after the treatment. 1. A method for removing metal and precious metal-containing depositions from a substrate , comprising the step of (i) treating the substrate with an organo amine protectant component (“P”) and an inorganic active component (“A”) or (ii) treating with a complexing component (“C”) and an “A” , wherein said component “P” or “C” is selected from the group consisting of mono-substituted amine hydrohalides , di-substituted amine hydrohalides , tri-substituted amine hydrohalides , and tetra-substituted ammonium halides , wherein each substituent is independently an alkyl having 1 to 18 carbon atoms or a cycloalkyl having 3 to 8 carbon atoms or an alkyl having 1 to 18 carbon atoms substituted by hydroxy-group or an alkyl having 1 to 18 carbon atoms substituted by carboxy-group or an alkyl having 1 to 18 carbon atoms substituted by hydroxy and ...

INTEGRATED LITHIUM EXTRACTION

Methods and apparatus for integrated alkali metal extraction are disclosed. Various exchange media are used to separate a chosen alkali metal, usually lithium, from a source stream and render the alkali metal into a product. In some cases, absorption/desorption processes, using solid and/or liquid absorption media, are used to purify a brine stream into a concentrate stream having elevated concentration of the desired alkali metal. Various processes, which may include use of liquid absorbents, electrochemical processing, centrifugation, evaporation, electrical mixing and separation, or combinations thereof, are used to separate the chosen metal from the source, and aqueous streams are recycled among the processes to facilitate the various separations. 1. A method of recovering alkali metals from an aqueous source , comprising:removing divalent ions from the aqueous source by exposing the aqueous source to an intercalated resin that absorbs alkali metals;flushing the intercalated resin using a clean water stream to produce an aqueous divalent depleted stream;extracting alkali metals from the aqueous divalent depleted stream to produce a concentrated monovalent stream and a monovalent depleted stream; androuting the monovalent depleted stream to a purification process to produce the clean water stream.2. The method of claim 1 , wherein the extracting the alkali metals from the aqueous divalent depleted stream comprises performing a liquid absorption process on the aqueous divalent depleted stream.3. The method of claim 1 , further comprising recovering alkali metals from the concentrated monovalent stream.4. The method of claim 1 , wherein the extracting alkali metals from the aqueous divalent depleted stream comprises using a processing aid comprising an alkali metal.5. The method of claim 1 , wherein the extracting alkali metals from the aqueous divalent depleted stream comprises contacting the aqueous divalent depleted stream with a liquid absorbent to form a ...

Measurement Apparatus for Measuring a Volume of a Desired Solid Component in a Sample Volume of a Solid-Liquid Slurry

The invention discloses a measurement apparatus for measuring a volume of a desired solid component in a sample volume of a solid-liquid slurry. The sample volume of the slurry is received into a receptacle and screened to separate out the desired solid component from a remainder of the slurry, whereby the solid component is retained in the receptacle to form a bed therein and the remainder is exhausted. The height of the bed is subsequently measured by a laser being adapted to emit a laser beam into the receptacle, thereby enabling a determination of a volume and/or mass of the solid component retained in the receptacle. The invention further discloses a control system for a leaching plant utilising the measurement apparatus.

ALKENYL (PERFLUOROALKYL) PHOSPHINIC ACIDS

The invention relates to alkenyl(perfluoroalkyl)phosphinic acids, to the preparation and intermediates thereof, to the use thereof as monomers for the preparation of oligomers and/or polymers, to the corresponding oligomers/polymers, to the corresponding support materials comprising the oligomers/polymers, and to the use thereof as ion exchangers, as catalysts or extraction medium and corresponding salts thereof. 2. Compounds according to claim 1 , characterised in that Rdenotes a straight-chain or branched perfluoroalkyl group having 1 to 8 C atoms.3. Compounds according to claim 1 , characterised in that A and X are identical.4. Compounds according to claim 1 , characterised in that B denotes —(CRR)— claim 1 , arylene or substituted arylene.7. A method for the preparation of oligomers or polymers which comprises oligomerizina or polymerizing a compound of .8. Oligomer or polymer containing polymerised compounds of the formula I claim 1 , according to claim 1 , as monomer units.9. Process for the preparation of oligomers or polymers according to claim 8 , characterised in that compounds of the formula I claim 8 , are polymerised claim 8 , optionally together with further monomers and optionally in the presence of a crosslinking agent.10. Process according to claim 9 , characterised in that the polymerisation is carried out by means of free radicals11. Process according to claim 9 , characterised in that a homo-polymer is prepared.12. Process according to claim 9 , characterised in that the polymerisation is carried out without crosslinking agents.13. Process according to claim 9 , characterised in that the polymerisation is carried out in claim 9 , on or at a support material.14. Composite material comprising a support material and at least one compound according to .15. An ion exchanger or as Brønsted acid catalyst material comprising a compound of or a polymer or oligomer of a compound of .16. A method for the extraction of cations of the rare earths from a ...

PROCESS FOR RECOVERING GOLD

Provided is a process for recovery of gold from gold-bearing raw materials comprising (a) leaching said gold-bearing raw material in a chloride containing leaching solution containing a total concentration of less than 120 g/L of halide ions, whereby the total concentration of chloride ions is less than 120 g/L of to dissolve gold and to obtain a leach solution comprising gold in solution; and simultaneously contacting the leach solution comprising gold in solution with a re-sorptive material to obtain a leach solution comprising gold-bearing re-sorptive material; and (b) recovering gold and optionally silver from the said gold-bearing re-sorptive material. 121-. (canceled)22. A process for recovery of gold from gold-bearing raw materials comprising (a) leaching said gold-bearing raw material in a chloride containing leaching solution comprising a total concentration of 1 to 35 g/L of halide ions , whereby the total concentration of chloride ions is from 1 to 35 g/L , to dissolve gold and to obtain a leach solution comprising gold in solution , wherein the oxidation-reduction potential of the leaching solution in the leaching step (a) is at least 400 mV vs. Ag/AgCl; and simultaneously contacting the leach solution comprising gold in solution with a re-sorptive material to obtain a leach solution comprising gold-bearing re-sorptive material , wherein the re-sorptive material is selected from carbon comprising chemicals and materials; and (b) recovering gold and optionally silver from said gold-bearing re-sorptive material.23. A process as claimed in claim 22 , wherein the total concentration of bromide ions is less than 10 g/L claim 22 , and a total concentration of cupric and/or ferric ions is at least 1 g/L.24. A process as claimed in claim 22 , wherein the chloride containing leaching solution comprises a total concentration from 1 to 20 g/L of halide ions claim 22 , whereby the total concentration of chloride ions is from 1 to 20 g/L.25. A process as claimed in ...

FLOTATION REAGENTS AND FLOTATION PROCESSES UTILIZING SAME

Methods of enhancing recovery of value sulfide or precious minerals from an ore containing Mg-silicate, slime forming minerals, and/or clay by subjecting the ore to a flotation process performed under acidic conditions, in conjunction with the addition of a froth phase modifier agent to the ore, are provided herein. 2. A method according to claim 1 , wherein the polymer further comprises one or more hydrophobic group selected from the group consisting of aromatic hydrocarbons; C-Chydrocarbons; alkyl or aryl esters; and alkyl or aryl ethers.3. A method according to claim 2 , wherein said ester is one or more member selected from the group consisting of: vinyl acetate claim 2 , vinyl formate claim 2 , vinyl propionate claim 2 , vinyl butyrate claim 2 , and vinyl isobutyrate.4. A method according to claim 2 , wherein said alkyl ether is one or more member selected from the group consisting of: butyl vinyl ether claim 2 , ethyl vinyl ether claim 2 , and methyl vinyl ether.5. A method according to claim 2 , wherein the C-Chydrocarbon is selected from the group consisting of N-hexyl acrylamide; N-propyl acrylamide; and N claim 2 ,N-dipropyl acrylamide.6. A method according to claim 1 , wherein the froth phase modifier is a polymer selected from the group consisting ofpoly(styrene-co-maleic anhydride-co-2-acrylamido-2-methyl-1-propanesulfonic acid),poly(allyl sulfonate-co-maleic anhydride),hydroxamated poly(acrylamide-co-vinylphosphonic acid),poly(acrylic acid-co-vinylphosphonic acid),poly(2-acrylamido-2-methyl-1-propanesulfonic acid-co-vinylphosphonic acid),silane- and tert-octylamine modified poly(N-vinylpyrrolidone-co-maleic anhydride),3-aminopropyltriethoxysilane modified poly(styrene-co-maleic anhydride),3-aminopropyltriethoxysilane modified poly(styrene-co-maleic anhydride-co-acrylic acid),hydroxamated poly(acrylamide-co-2-acrylamido-2-methyl-1-propanesulfonic acid),and combinations thereof.7. A method according to claim 1 , wherein said froth phase modifier is added ...

METHODS FOR PURIFYING ALUMINIUM IONS

There are provided processes for purifying aluminum ions. Such processes comprise precipitating the aluminum ions under the form of Al(OH)at a first pH range; converting Al(OH)into AlClby reacting Al(OH)with HCl and precipitating said AlCl; and heating the AlClunder conditions effective for converting AlClinto AlOand optionally recovering gaseous HCl so-produced. The processes can also comprise converting alumina into aluminum. 1123-. (canceled)124. A process for purifying aluminum ions comprising:leaching an aluminum containing material chosen from an aluminum-containing ore, a recycled industrial aluminum-containing material, red mud, fly ashes, slag, alumina, aluminum hydroxide, aluminum chloride and aluminum metal with an acid so as to obtain a leachate comprising said aluminum ions and ions from at least one metal; and optionally a solid residue;optionally separating the leachate from the solid residue;{'sub': 3', '3, 'precipitating said aluminum ions from said leachate in the form of Al(OH)at a pH of about 7 to about 10 in order to obtain a solid comprising said Al(OH)and a liquid comprising said ions from said at least one metal;'}separating said solid from said liquid;{'sub': 3', '3', '3', '3, 'converting said Al(OH)into AlClby reacting Al(OH)with HCl and precipitating said AlCl;'}{'sub': '3', 'recovering said AlCl; and'}{'sub': 3', '3', '2', '3, 'heating said AlClunder conditions effective for converting AlClinto AlOand optionally recovering gaseous HCl so-produced.'}125. The process of claim 124 , wherein said pH is about 9 to about 10.126. The process of claim 124 , wherein precipitation of said aluminum ions is carried out at a temperature of about 50 to about 75° C.127. The process of claim 124 , wherein precipitating said aluminum ions in the form of Al(OH)at a pH of about 7 to about 10 is carried out by reacting said aluminum ions with AlCl.128. The process of claim 124 , wherein a first precipitation of said aluminum ions in the form of Al(OH)is ...

METHOD FOR PLATINUM RECOVERY FROM MATERIALS CONTAINING RHENIUM AND PLATINUM METALS

The present disclosure relates to hydrometallurgical methods for the isolation and recovery of platinum from rhenium-containing materials, and more particularly, from superalloys containing rhenium, platinum, and other metals. The disclosure also relates to apparatuses capable of carrying out the hydrometallurgical methods and the product streams generated from the methods and apparatuses. 1. A system configured to separate platinum and rhenium wherein the system comprises:an apparatus configured to digest an alloy feed comprising platinum and rhenium in a complexing ligand comprising halides in an amount sufficient to complex the platinum present in the alloy feed;an apparatus configured to separate resulting solids from the liquid comprising platinum and rhenium, wherein a concentration of rhenium and/or platinum in the resulting solids is from 50 to 100% lower than a concentration of rhenium and/or platinum in the alloy feed;an apparatus configured to contact a liquid comprising platinum and rhenium with a chelating ion exchange resin, whereby the platinum is adsorbed onto the chelating ion exchange resin,an apparatus configured to obtain a liquid stream comprising a higher relative concentration of rhenium to platinum than a relative concentration of rhenium to platinum in the liquid comprising platinum and rhenium.2. The system of claim 1 , wherein the chelating ion exchange resin is functionalized with thiourea or thiouronium groups.3. The system of claim 1 , wherein the pH of the liquid comprising platinum and rhenium is below 5.4. The system of claim 1 , wherein the complexing ligand is selected from the group consisting of hydrochloric acid claim 1 , a chloride containing salt claim 1 , bromine and bromide salts claim 1 , or chlorine.5. The system of claim 1 , wherein the apparatus configured to digest an alloy feed is configured to digest the alloy feed comprising platinum and rhenium in an oxidant capable of oxidizing both platinum and rhenium from their ...

MODULAR EXTRACTION APPARATUS

Apparatuses and methods for extracting desired chemical species from input flows in a modular unit. 1. A modular extraction system , comprising:a first tank, a second tank, and a third tank;an interconnection system for selectively directing a brine input stream to at least one of the first tank, the second tank, and the third tank;an amount of sorbent material contained within at least one of the first tank, the second tank, and the third tank, in which the sorbent material extracts at least one constituent from the brine input stream; andat least one of a purification membrane and a concentration membrane, for processing the extracted at least one constituent into at least one output stream.2. The modular extraction system of claim 1 , in which the sorbent is a solid material.3. The modular extraction system of claim 1 , further comprising a post-processing module claim 1 , coupled to at least one of the at least one output streams claim 1 , in which the post-processing module additionally concentrates claim 1 , purifies claim 1 , and/or processes the at least one output stream.4. The modular extraction system of claim 1 , in which the sorbent material is at least one of lithium aluminate claim 1 , aluminum-based materials claim 1 , aluminum-oxygen based materials claim 1 , manganese claim 1 , manganese oxides claim 1 , gallium-based materials claim 1 , cobalt oxides claim 1 , transition metal oxides claim 1 , transition metal sulfides claim 1 , transition metal phosphates claim 1 , aluminum phosphates claim 1 , gallium phosphates claim 1 , antimony oxides claim 1 , antimony phosphates claim 1 , tin oxides claim 1 , tin phosphates claim 1 , silicon-based materials claim 1 , germanium-based materials claim 1 , transition metal silicates claim 1 , aluminum-gallium silicates claim 1 , germanium claim 1 , tin claim 1 , and/or antimony silicates claim 1 , sulfides claim 1 , titanates claim 1 , indiumates claim 1 , indium tin oxides claim 1 , mixed transition metal ...

Process for recovering metal from electronic waste

The invention relates to a method for recovering precious metals from electronic waste utilising biometallurgical techniques. In one aspect, a method of recovering one or more target metals from electronic waste, includes (a) removing at least a portion of non-target material from the electronic waste or grinding to a preselected size particle to give pre-processed electronic waste; (b) contacting the pre-processed electronic waste with a lixiviant such that at least a portion of the target metal(s) dissolve into the lixiviant to produce a pregnant solution; (c) contacting a microorganism with the pregnant solution such that at least a portion of the target metal(s) ions biosorb to the microorganism wherein the microorganism becomes metal laden and the pregnant solution becomes barren; (d) substantially separating the metal laden microorganism from the barren solution; and (e) recovery of the target metal(s) from the metal laden microorganism.

Opportunities for recovery augmentation process as applied to molybdenum production

A copper/molybdenum separation processor is provided featuring a slurry/media mixture stage configured to receive a conditioned pulp containing hydrophobic molybdenite and hydrophilic copper, iron and other minerals that is conditioned with sodium hydrosulfide together with an engineered polymeric hydrophobic media, and provide a slurry/media mixture; and a slurry/media separation stage configured to receive the slurry/media mixture, and provide a slurry product having a copper concentrate and a polymerized hydrophobic media product having a molybdenum concentrate that are separately directed for further processing. The slurry/media mixture stage include a molybdenum loading stage configured to contact the conditioned pulp with the engineered polymeric hydrophobic media in an agitated reaction chamber, and load the hydrophobic molybdenite on the engineered polymeric hydrophobic media.

SOLID EXTRACTING AGENT WITH HIGH DYNAMIC EXCHANGE CAPACITY FOR EXTRACTION OF SCANDIUM AND METHOD OF ITS PRODUCTION

The invention relates to a composition and method for producing a solid extracting agent for extraction of scandium from sulfuric acid solutions. 3. The method of claim 2 , wherein the aqueous starch solution comprises 0.7% by weight starch.4. The method of claim 2 , wherein claim 2 , in the step of raising the temperature claim 2 , the reaction mixture is heated to at least 90° C.5. The method of claim 4 , wherein claim 4 , in the step of raising the temperature claim 4 , the reaction mixture is held at an intermediate temperature of less than 90° C.6. The method of claim 5 , wherein claim 5 , in the step of raising the temperature claim 5 , the reaction mixture is heated at 0.5° C./min to 80° C. claim 5 , held at 80° C. for 5 hours claim 5 , heated to 90° C. claim 5 , and held at 90° C. for 2 hours. The invention relates to a composition and method for producing a solid extracting agent for extraction of scandium from sulfuric acid solutions in the extraction processes of hydrometallurgical production after extraction of uranium, nickel, copper or other metals, when they are produced by in-situ leaching.Currently, phosphorus-containing ion exchange resins, impregnated sorbents (impregnates) and solid extracting agents (Solex) are known to be used for extraction of scandium. At the same time, ion exchange resins, impregnates and Solexes have both inherent advantages and disadvantages.A method of producing a sorbent for selective extraction of scandium ions with a spatially obstructed group of a-hydroxyphosphonic acid by acylation of a styrene copolymer with divinylbenzene in the presence of Friedel-Crafts catalyst, followed by phosphorylation of the acylated copolymer with phosphorus trichloride, is disclosed in RU 2531916, 26.04.2013. The resulting sorbent has a much higher affinity for scandium than for iron (III).The disadvantage of this sorbent production method is its low capacity in the extraction of scandium due to the low degree of accessibility of ...

Low Acidity, Low Solids Pressure Oxidative Leaching of Sulphidic Feeds

Process for recovering one or both of copper and silver from a sulphidic feed containing iron, arsenic, copper and silver by pressure oxidizing an aqueous feed slurry of the sulphidic feed in a pressure vessel to form a liquid phase containing free sulphuric acid and aqueous copper sulphate, and to precipitate arsenic as solid iron arsenic compounds. The process includes operating the pressure vessel at a sufficiently low solids content to maintain a free acid level below 30 g/L in the liquid phase, and providing sufficient heat to maintain a temperature in the pressure vessel above 200° C. Copper metal is recovered from the liquid phase and/or silver may be recovered from the solids by cyanide leaching without the need for a jarosite destruction step.

Settling separation process for nuetralized slurry and hydrometallurgical process for nickel oxide ore

An object of the present invention is to provide a settling separation process for a neutralized slurry in which a neutralization step is efficiently performed for a leachate obtained by the leaching of nickel and cobalt from a nickel oxide ore, and further a neutralized precipitate obtained by precipitation of impurity components can effectively be separated and removed while inhibiting the filtration failure; and to provide a hydrometallurgical process for a nickel oxide ore, in which the above process is applied. In the present invention, a neutralization step is performed by using a magnesium oxide for a leachate obtained by the leaching of nickel and cobalt from a nickel oxide ore to obtain a neutralized slurry, and a neutralized precipitate is separated and removed by the addition of a cationic flocculant into the neutralized slurry.

COMPOSITIONS AND METHODS FOR SEPARATING IMMISCIBLE LIQUIDS

Provided are methods and related compositions for separating immiscible organic and aqueous compositions. The methods include dispersing a discrete, insoluble filler in the organic composition, dispersing the organic composition into the aqueous composition, separating under gravity the organic and aqueous compositions into respective upper and lower layers. Advantageously, the insoluble filler remains in the organic composition and facilitates segregation and coalescence of droplets of the organic composition in the aqueous composition. 1. A method of separating immiscible organic and aqueous compositions , the method comprising:co-dispersing the organic composition and the aqueous composition, wherein the organic composition comprises a dispersed, discrete, insoluble filler comprising polymeric fibers; andseparating under gravity the organic and aqueous compositions into respective upper and lower layers, wherein the insoluble filler remains in the organic composition.2. The method of claim 1 , further comprising dispersing the discrete claim 1 , insoluble filler in the organic composition prior to co-dispersing the organic composition and the aqueous composition.3. The method of claim 1 , wherein the polymeric fibers are present in the organic composition in an amount of from 0.05 percent to 2 percent by weight based on the weight of the organic composition.4. The method of claim 1 , wherein the polymeric fibers have a median diameter of from 1 micrometer to 100 micrometers.5. The method of claim 1 , wherein the polymeric fibers have a median aspect ratio of from 200 to 1000.6. The method of claim 1 , wherein the organic composition is a solvent extraction organic for a hydrometallurgical process.7. The method of claim 6 , wherein the solvent extraction organic comprises an oxime-based extractant dissolved in a carrier solvent.8. The method of claim 7 , wherein the aqueous composition is a sulfuric acid solution.9. (canceled)10. An extraction composition ...

Ligand Assisted Chromatography for Metal Ion Separation

Presented herein is a ligand-assisted elution chromatography process for the separation of metal ions using a sorbent. In particular, the present invention discloses a process of two sets of column system in combination with two sets of eluting ligand solutions to prepare substantially pure rare earth elements, wherein the first set of column comprises strong acid cation exchange resins and the second set of chromatographic columns comprises hydrous polyvalent metal oxide selected from the group consisting of TiO, ZrO, or SnOand wherein ligand of said second ligand solution coordinates with said hydrous polyvalent metal oxide. 1. A product of substantially pure rare earth element (REE) manufactured according to the process ofa. dissolving a mixture containing REEs in a strong acid to result in a dissolved mixture of metal ions, including that of REEs;b. capturing metal ions of REEs in a first set of chromatographic columns comprising strong acid cation exchange resins;c. washing said first set of chromatographic columns with a salt solution to remove non-adsorbing metal ions;d. eluting metal ions of REES from said first set of chromatographic columns with a first ligand solution to result in a solution of enriched metal ions of REEs;e. loading said solution of enriched metal ions of REEs onto a second set of chromatographic columns; and{'sub': 2', '2', '2, 'f. eluting bound metal ions of REEs stepwise from said second set of chromatographic columns using a second ligand solution to afford a substantially pure REE, wherein said second set of chromatographic columns comprising hydrous polyvalent metal oxide selected from the group consisting of TiO, ZrO, or SnOand wherein ligand of said second ligand solution coordinates with said hydrous polyvalent metal oxide.'}2. The product of claim 1 , wherein said salt solution is a sodium or ammonium salt solution with a counter ion selected from the group consisting of chloride (Cl) claim 1 , sulfate (SO) claim 1 , bisulfate ( ...

Method for separating rare earth element

Provided is a method for easily and inexpensively separating a rare earth element contained in an aqueous solution.

Method for recovering gold and gold recovery facility

Provided are a method for recovering gold, in which gold is recovered from a solution containing a gold cyano complex using a crosslinked resin containing a vinyl amine unit, by which gold can be efficiently recovered from the solution not only in a case (A) where a concentration of the gold cyano complex in the solution is low but also in a case (B) where another metal is dissolved in the solution; a method for recovering gold, in which the crosslinked resin and the solution are brought into contact with each other to separate the crosslinked resin and the solution from each other, by which gold can be efficiently recovered from the solution not only in the case (A) but also in the case (B); and a gold recovery facility comprising: a container inside which the crosslinked resin is accommodated in a flowable manner; and a device which feeds the solution to the container, by which gold can be efficiently recovered from the solution not only in the case (A) but also in the case (B).

NOVEL ORGANIC MATERIAL FOR EXTRACTING THE URANIUM FROM AN AQUEOUS SOLUTION OF PHOSPHORIC ACID, ASSOCIATED METHODS FOR EXTRACTING AND RETRIEVING THE URANIUM AND A PRECURSOR OF SUCH AN ORGANIC MATERIAL

An organic material which includes a solid polymer substrate onto which molecules having the following general formula (I) are grafted: 3. The organic material according to claim 2 , wherein the plurality of molecules meets the particular formula (I-a) where m=0 and Ris a hydrogen atom.5. The organic material according to claim 1 , wherein Rand Rare each the same and represent a branched alkyl group having 8 to 10 carbon atoms.7. The organic material according to claim 1 , wherein the solid polymeric substrate is formed of a polymer comprising at least one repeat unit selected from among an olefin unit claim 1 , a unit comprising an aromatic group claim 1 , an acrylic ester unit and mixtures of these units claim 1 , this polymer advantageously being a divinylbenzene/styrene copolymer or an acrylic ester polymer.8. Use of an organic material according to claim 1 , to extract uranium(VI) from an aqueous solution comprising phosphoric acid claim 1 , in particular from a solution resulting from attack of a natural phosphate by sulfuric acid.9. Method for extracting uranium(VI) from an aqueous solution comprising phosphoric acid claim 1 , which comprises placing the aqueous solution in contact with an organic material according to claim 1 , followed by separation of the aqueous solution and the organic material.10. Method for recovering uranium(VI) from an aqueous solution comprising phosphoric acid claim 1 , which comprises:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, '(a) extracting uranium(VI) from the aqueous solution, extraction comprising the placing of the aqueous solution in contact with an organic material according to , followed by separation of the aqueous solution and the organic material; and'}(b) stripping the uranium(VI) from the organic material obtained after step (a), stripping comprising the placing in contact of the organic material obtained after step (a) with a basic aqueous solution, followed by separation of the organic material and the basic ...

A METHOD OF PREPARATION AND APPLICATION OF ION-KEEPER ADSORBENT

The invention belongs to the field of chemical separation, hydrometallurgy and resource recovery and provides a method for preparing and applying of ion-keeper adsorbent. By adjusting the pH to selective oxidation to achieve the oxidation of ferrous iron into ferric iron. Separates the iron after the hydrothermal reaction; By using of ion imprint “ion keeper” effect and biomass as raw materials, to prepare the adsorbent with internal rules, hierarchical pores and high selectivity. It can be used for deep purification of chromium solution, such as iron, aluminum, vanadium and other impurities in the solution; After the deep purification of chromium solution, then adjusting the pH, adding appropriate hydrating agent, by hydrothermal precipitation treatment of chrome, filtration, acid washing and calcination to obtain chromium oxide crystal. It achieves the purification of chromium, iron, aluminum and chromium. The recycling and comprehensive utilization of waste resources are also realized. The process is simple, the iron, aluminum, vanadium and other impurities are in the selective adsorption. Chromium solution after deep purification can be processed for high purity chromium products to provide technical support. 1. A preparation method of ion-keeper adsorbent , its characteristics and steps are listed as follows:(1) The concentration of chromate solution is 0.1˜1.5 mol/L, and the pH is adjusted to 2˜6;(2) The biomass is washed, broken and soaked in chromate solution for 2˜36 h to obtain a mixture of biomass potassium chromate; the ratio of mass biomass to chromate solution is 1:2˜8;(3) The biomass chromate mixture obtained in step (2) is transferred into a reaction kettle and aged for 2˜8 hours at the temperature of 120 to 220° C. to obtain a chromium-keeper adsorbent, which is ion-keeper adsorbent2. According to the preparation method claim 1 , wherein the biomass is one or more of the kelp claim 1 , the straw claim 1 , the sawdust claim 1 , the leaf or the peel.3 ...

Ion Exchange Resins Selective for the Complexation of Univalent Anions in Aqueous Solutions

Ion exchange resin macroporous beads for the highly selective extraction of univalent anions from aqueous solutions. A specific example is the removal of dicyanoaurate and dicyanoargentate from cyanide leach solutions and tailings. The beads have a maximum number of ligands specific for the desired univalent anion, while maintaining sufficient separation to minimize binding of polyvalent ions. The beads are prepared using a functionalized monomer with the use of a specifically tuned coordinator. The beads can be used as a sensor for detecting the amount of anions captured when interrogated by an appropriate light source. 1. A macroporous ion exchange resin polymer bead comprising:a plurality of ligands selective for a specific univalent ion, the ligands co-polymerized with a non-complexing monomer and a crosslinker;wherein each ligand comprises a coordination site supplying the appropriate charge for the univalent ion; andwherein the ligands are sufficiently separated to minimize binding of polyvalent ions to the bead.2. The bead of wherein the monomer comprises styrene and the crosslinker comprises divinyl benzene.3. The bead of wherein the bead does not comprise the univalent ion.4. The bead of wherein the ligand is cationic5. The bead of wherein the ligand is monodentate.6. The bead of comprising a number of ligands to substantially maximize a binding capacity of the bead to the univalent ion while maintaining spatial separation to minimize cooperative effects between ligands.7. The bead of wherein the ligand is selected from the group consisting of cationic oxygen containing heterocyclics claim 1 , cationic nitrogen containing heterocyclics claim 1 , cationic sulfur containing heterocyclics claim 1 , cationic phosphorous containing heterocyclics claim 1 , ammonium salts claim 1 , phosphonium salts claim 1 , acylinium salts claim 1 , metallocenium salts claim 1 , amidinium salts claim 1 , imminium salts claim 1 , trityl salts claim 1 , 4-vinylbenzyl-N claim 1 ,N ...

PROCESSING AND APPLICATION OF A PURIFICATION SYSTEM FOR GOLD MINING, EXTRACTION OF MINERALS AND GROWTH OF ALGAE BIOMASS

The present disclosure describes a process for using saline water, and saline reject water produced in water purification, to use for gold mining production, and growing and harvesting algae. The disclosure also describes a method for growing and harvesting algae utilizing saline water as growth medium for recycling waste water to extract the remaining metals out of waste water. The harvested algae may be used in various applications including but not limited to water purification for gold mining production and to extract metals out of remaining waste water. 2. The method of claim 1 , further comprising:storing the purified water in a purified water reservoir that is connected to the first water purification system and the gold mining production system; andsupplying the gold mining production system with a stream of purified water.3. The method of claim 1 , further comprising:wherein the third saline water stream has a salt concentration Z and forms a second purified water stream having a salt concentration A lower than Z and the third saline water stream has a salt concentration B higher than Z.4. The method of claim 1 , further comprising:treating the second saline water stream in a treatment unit that receives the second saline water stream and treats the stream to be used in the bioreactor containing microalgae; andwherein the additives are added to the second saline water stream from an additive chamber connected to the treatment unit; and{'sub': '2', 'wherein the additives include COgas, acids, and bases.'}5. The method of claim 1 , further comprising:supplying carbon dioxide to the algae growing and harvesting chamber; andsupplying light in the form of UV or solar light to the algae growing and harvesting chamber; andwherein the algae growth and harvesting chamber has a temperature in the range of 10-80° C.6. The method of claim 1 , further comprising:extracting the remaining metals from the waste water purifying unit.7. The method of claim 1 , wherein:the ...

PROCESSING AND APPLICATION OF A PURIFICATION SYSTEM FOR GOLD MINING, EXTRACTION OF MINERALS AND GROWTH OF ALGAE BIOMASS

The present disclosure describes a process for using saline water, and saline reject water produced in water purification, to use for gold mining production, and growing and harvesting algae. The disclosure also describes a method for growing and harvesting algae utilizing saline water as growth medium for recycling waste water to extract the remaining metals out of waste water. The harvested algae may be used in various applications including but not limited to water purification for gold mining production and to extract metals out of remaining waste water. 118-. (canceled)19. A method of producing at least one metal from a gold ore , the method comprising:(a) treating a first salt water stream having a first salt concentration X,wherein the treating is carried out with at least one of electrodialysis reversal, reverse osmosis, and mechanical vapor compression in a first water purification system to form: (i) a first purified water stream having a second salt concentration Y lower than X, and (ii) a first saline water stream having a third salt concentration Z higher than X,(b) treating the gold ore with the first purified water stream to separate gold from the gold ore and form a waste water comprising metal ions in a gold mining production system,(c) treating the first saline water stream in a second water purification system connected to the first water purification system to form a second saline water stream and a second purified water stream,wherein the second purified water stream has a fourth salt concentration A lower than Z, and the second saline water stream has a fifth salt concentration B higher than Z,(d) feeding the second saline water stream to a bioreactor containing algae to form a first algae biomass in the saline water of the second saline water stream,(e) feeding the first algae biomass to an algae growth and harvesting chamber to grow the first algae biomass and form a concentrated algae biomass,(f) feeding the concentrated algae biomass to a ...

MONAZITE AND APATITE PARAGENETIC ORE ENRICHMENT METHOD

The present invention discloses a monazite and apatite paragenetic ore enrichment method. High-grade and high-recovery-rate monazite concentrate can be obtained by adopting the method through steps of ore grinding, floatation, magnetic separation and low-acid advanced leaching treatment and re-floatation. In this process, the applicable range of ore pulp temperature is wide, the process flow is short, the ore dressing conditions are mild, the energy consumption is small, the used diluted acid can be cyclically regenerated and used, the pollution is small, the environmental stress is small and the recovery rate of low-grade monazite and apatite paragenetic ores can be obviously improved. 1. A monazite and apatite paragenetic ore enrichment method , characterized in that the monazite and apatite paragenetic ore enrichment method comprises the following steps: performing acid leaching to mixed concentrate containing rare earth and apatite by using inorganic acid and then performing liquid-solid separation to obtain acid leaching residues and leaching solution , wherein the acid leaching residues are monazite and apatite paragenetic ores; and a liquid-solid ratio of the inorganic acid to the mixed concentrate is 2.0-5.0 , an acid excess coefficient is 0.5-3.0 , and 0.1-0.3% of flocculating agent by mass percentage based on a mass sum of the mixed concentrate and the inorganic acid is added during acid leaching , and the temperature of the leaching system is 20-120° C.2. The monazite and apatite paragenetic ore enrichment method according to claim 1 , characterized in that the mixed concentrate is a solid matter obtained by performing ore grinding to raw ores claim 1 , then performing pulp mixing and performing primary flotation and/or magnetic separation claim 1 , the content of REO in the raw ores of the monazite and apatite paragenetic ores is 0.3-10%.3. The monazite and apatite paragenetic ore enrichment method according to claim 1 , characterized in that the ...

ACTIVATED CARBON REGENERATION METHOD AND GOLD RECOVERY METHOD

An activated carbon regeneration method of the present invention is for eluting gold from activated carbon on which the gold has been adsorbed and thereafter recycling, in adsorption of the gold, the used activated carbon from which the gold has been eluted, the method including: washing the used activated carbon with an acidic washing liquid, alkaline washing liquid or neutral washing liquid; and when the used activated carbon is washed with the acidic washing liquid, keeping the acidic washing liquid after the washing in an acidic region, or when the used activated carbon is washed with the alkaline washing liquid or neutral washing liquid, keeping the alkaline washing liquid or neutral washing liquid after the washing in an alkaline region or neutral region. 110. -. (canceled)11. An activated carbon regeneration method for recycling used activated carbon in adsorption of gold , from which gold has been eluted , after eluting the gold from activated carbon on which the gold has been adsorbed , the method comprising:washing the used activated carbon with an acidic washing liquid or alkaline washing liquid; andwhen the used activated carbon is washed with the acidic washing liquid, keeping the acidic washing liquid after the washing in an acidic region and pH of the acidic washing liquid after the washing is defined as 2.7 or lower, or when the used activated carbon is washed with an alkaline washing liquid, keeping the alkaline washing liquid after the washing in an alkaline region and an aqueous caustic soda solution is used as the alkaline washing liquid.12. The activated carbon regeneration method according to claim 11 , wherein the used activated carbon is washed with the acidic washing liquid claim 11 , and a hydrochloric acid solution is used as the acidic washing liquid.13. The activated carbon regeneration method according to claim 11 , wherein the used activated carbon is washed with the alkaline washing liquid claim 11 , and pH of the alkaline washing ...

METHOD FOR RECOVERING SCANDIUM FROM RED MUD LEFT FROM ALUMINA PRODUCTION

The present invention relates to rare earth metallurgy, in particular a method for recovering scandium from the red mud byproduct of alumina production. The method includes repulping red mud, sorption leaching scandium therefrom with the use of an ion-exchange sorbing agent to obtain a rich-in-scandium ion exchanger and depleted-in-scandium pulp, desorbing scandium with a solution of sodium hydrocarbonate to obtain a desorbed ion exchanger which is returned to the sorption leaching stage and a solution of industrial reclaim scandium which is transferred to obtain a deposited concentrated scandium, wherein scandium is continuously sorption-leached from red mud pulp in the phosphorous-containing ion exchanger in a countercurrent mode upon direct contact of the pulp with the ion exchanger, scandium is desorbed from the organic phase of the ion exchanger by a solution with a concentration of NaCOof 200-450 g/dmto obtain industrial reclaim scandium, from which a scandium concentrate is recovered. 1. A method for recovering scandium from red mud left from alumina production as an industrial reclaim of scandium for recovery a concentrated scandium , including following stages:repulping of red mud,sorption leaching of scandium from red mud pulp with the use of an ion-exchange sorbing agent to obtain a rich in scandium ion exchanger and a depleted in scandium pulp,desorbing scandium by a solution of sodium hydrocarbonate to obtain a desorbed ion exchanger which is returned to the stage of sorption leaching of scandium and a solution of an industrial reclaim of scandium which is transferred to obtain the concentrated scandium,{'sub': 2', '3, 'sup': '3', 'characterized in that the red mud is repulped by a solution having a mixture of sodium carbonate and sodium bicarbonate, scandium is continuously sorption-leached from red mud pulp in the phosphorous-containing ion exchanger in a countercurrent mode on a direct contact of the pulp with the ion exchanger, scandium is desorbed ...

PROCESS LINE FOR MULTI-RECYCLING, LOW-ENERGY AND HIGH-PURITY EXTRACTION OF LITHIUM

A process line for multi-recycling, low-energy and high-purity extraction of lithium in the present disclosure is intended to increase the purity and the concentration of lithium ions in produced solutions gradually through steps of adsorption/desorption ion exchange, extraction, impurity separation, agent separation and concentration during which extractive liquids are returned, recycled and processed in previous steps for fewer dosages of chemicals and fewest discharged effluents, lower manufacturing costs than existing techniques, low specific energy consumption and consumable loss, and high-purity products with lithium ions. 1. A process line for multi-recycling , low-energy and high-purity extraction of lithium , comprising steps:Step 1: Raw material solutions are pretreated for productions of precursor solutions with lithium ions, desorption agents and foreign ions;Step 2: Precursor solutions with lithium ions are processed for the first impurity separation through which first extractive liquids and second extractive liquids are produced wherein the concentrations of foreign ions in the first extractive liquids range from 0.1 to 30 ppm and the concentrations of foreign ions in the second extractive liquids range from 60 to 6,000 ppm;Step 3: The first extractive liquids are processed for separations of desorption agents through which third extractive liquids and fourth extractive liquids are produced wherein the concentrations of lithium ions in the third extractive liquids range from 1 to 150 ppm and the concentrations of lithium ions in the fourth extractive liquids range from 250 to 2,500 ppm;Step 4: The fourth extractive liquids are concentrated for productions of fifth extractive liquids and sixth extractive liquids wherein the concentrations of lithium ions in the fifth extractive liquids range from 1 to 150 ppm and the concentrations of lithium ions in the sixth extractive liquids range from 2,500 to 20,000 ppm;Step 5: The sixth extractive liquids are ...

CYCLONE UNDERFLOW SCAVENGERING PROCESS USING ENHANCED MINERAL SEPARATION CIRCUITS (EMSC)

A system is provided for processing a circulating load in comminution circuit of a mineral separation process for separating mineral particles of interest from an ore, featuring: a coarse screen and an enhanced mineral separation circuit (EMSC). The coarse screen may be configured to receive a cyclone underflow having mineral particles of interest and forming part of the circulating load of the comminution circuit, and provide coarse screen feeds for further processing. The enhanced mineral separation circuit may include a collection processor configured to receive one of the coarse screen feeds, and may also include at least one collection apparatus located in the collection processor, the at least one collection apparatus having a collection surface configured with a functionalized polymer comprising a plurality of molecules having a functional group configured to attract the mineral particles of interest to the collection surface, and provide enhanced mineral separation circuit feeds for further processing in the system. 1. A system for processing a circulating load in comminution circuit of a mineral separation process for separating mineral particles of interest from an ore , comprising:a coarse screen configured to receive a cyclone underflow having mineral particles of interest and forming part of the circulating load of the comminution circuit, and provide coarse screen feeds for further processing; andan enhanced mineral separation circuit having a collection processor configured to receive one of the coarse screen feeds, and at least one collection apparatus located in the collection processor, the at least one collection apparatus having a collection surface configured with a functionalized polymer comprising a plurality of molecules having a functional group configured to attract the mineral particles of interest to the collection surface, and provide enhanced mineral separation circuit feeds for further processing in the system.2. A system according to ...

从磷石膏回收稀土元素的方法

本发明涉及回收稀土元素、特别是从磷石膏回收稀土元素的方法。所主张的方法包括在8-12分钟内使用具有1-3重量％浓度的3.2-1.2比率的硫酸-硝酸混合物溶液和以4-5的液固比，从磷石膏酸萃取稀土元素，同时对萃取悬浮液进行混合和进行水声作用，之后将不溶性石膏与萃取悬浮液分离并且使用阳离子交换吸附通过使萃取溶液流过阳离子-交换过滤器从所述萃取溶液回收稀土元素。所主张的方法允许以较低的浓度和较小体积的酸性试剂提高稀土元素的回收率和使完成处理的时间减半。

A method for recovering catalytic metals

A method for recovering catalytic metals from fluids containing catalytic metal colloids. Fluid compositions such as rinse solutions or dragout baths containing catalytic metal colloids are passed through a filter that entraps catalytic metal colloids on the filter. The catalytic metal colloids have a high affinity for the filter in contrast to other components of the fluids. The other components of the fluids pass through the filter while the catalytic colloids concentrate on the filter. The filter containing the catalytic metal colloids is burned, and the catalytic metal is retrieved. The method is economically efficient and environmentally friendly.

Heavy metal separations using strongly paramagnetic column packings in a nonhomogeneous magnetic field

The present invention is directed to a method for the separation of an actinide from another metal. The method comprises the following steps: (a) establishing a non-homogeneous magnetic field across a separation column containing a paramagnetic packing material and (b) providing a fluid containing the actinide and the another metal to the separation column wherein the fluid and the paramagnetic packing material are exposed to the non-homogeneous magnetic field. The non-homogeneous magnetic field is produced by a magnet having a first pole for magnetic interaction with a second pole of the magnet wherein the first pole has a different surface area than the second pole. The non-homogeneous magnetic field has a magnetic field gradient of about 500 lines/cm2/cm or more. In addition, the present invention is also directed to a method for the separation of one heavy metal from another heavy metal.

Adsorbent compositions

Adsorbent compositions and their preparation are disclosed for the adsorption of elemental mercury.

Separator membrane and process using such membrane for removing ions from an aqueous solution

Surface-functionalized mesoporous carbon materials

A functionalized mesoporous carbon composition comprising a mesoporous carbon scaffold having mesopores in which polyvinyl polymer grafts are covalently attached, wherein said mesopores have a size of at least 2 nm and up to 50 nm. Also described is a method for producing the functionalized mesoporous composition, wherein a reaction medium comprising a precursor mesoporous carbon, vinyl monomer, initiator, and solvent is subjected to sonication of sufficient power to result in grafting and polymerization of the vinyl monomer into mesopores of the precursor mesoporous carbon. Also described are methods for using the functionalized mesoporous carbon, particularly in extracting metal ions from metal-containing solutions.

一种分质回收复杂重金属的耐酸螯合树脂组合调控方法

本发明公开了一种分质回收复杂重金属的耐酸螯合树脂组合调控方法，属于重金属废水资源化处理领域；将含多种重金属的强酸废水依次泵入装填有不同类型耐酸螯合树脂的吸附柱，通过梯级调控溶液pH值（pH≤3），实现其中铜、镍、钴、锌、铁等多种重金属离子的多级选择性分离，处理后出水主要含铁盐，可用于生产铁基絮凝剂或净水剂；采用稀酸再生耐酸螯合树脂获得高浓度再生液，可通过中和等技术实现高纯度回收；本发明通过梯级调控废水pH值以及优选组合耐酸螯合树脂，实现了强酸废水中复杂重金属的选择性分离和分质回收，具有显著的环境效益和经济效益。

Method of extracting non-ferrous and/or noble metals from aqueous solutions

Изобретение относитс  к способам выделени  цветных металлов из водных растворов, содержащих растворенные соединени  этих металлов. Цель изобретени  - упрощение процесса . Способ предусматривает извлечение цветных металлов из водных растворов. Раствор пропускают через колонну, содержащую слой активированного угл  с размерами зерен 0,0.1-8 мм и слой красного фосфора с размерами зерен 0,01-10 мм или смесь красного фосфора с. активированным углем при содержании его в смеси 15,7 - 98 мас,%. Активированный уголь располагают нижним слоем. Красный (.фосфор активируют гипохлоритом натри . 1 з.п. ф-лы. СО оо о со :о The invention relates to methods for separating non-ferrous metals from aqueous solutions containing dissolved compounds of these metals. The purpose of the invention is to simplify the process. The method involves the extraction of non-ferrous metals from aqueous solutions. The solution is passed through a column containing an activated carbon layer with a grain size of 0.0.1-8 mm and a layer of red phosphorus with a grain size of 0.01-10 mm or a mixture of red phosphorus c. activated carbon with a content of 15.7 - 98 wt.% in a mixture. Activated carbon have a lower layer. Red (. Phosphorus is activated by sodium hypochlorite. 1 Cp of f-ly. CO oo o co: o

一种基于硫代硫酸盐浸出法的二硫化钼回收贵金属工艺

本发明公开了一种基于硫代硫酸盐浸出法的二硫化钼回收贵金属工艺，包括以下步骤：选取含贵金属矿石，将其置于硫代硫酸盐溶液中磨矿，磨矿后的矿浆进行浸出；获取所得到的浸出液，将MoS 2 基材料置于浸出液中进行吸附贵金属的硫代硫酸络合物；将吸附后的溶液过滤脱水，得到载有贵金属单质的MoS 2 基材料；将贵金属单质从MoS 2 基材料上脱附，得到含有贵金属单质的贵液；将所得到的贵液进行固液分离，得到贵金属单质。本发明通过MoS 2 基材料能够一步完成硫代硫酸盐浸金/银液中的富集与还原，且吸附量可达每克吸附剂吸附数百毫克Au/Ag；同时，通过NaOH溶液或Na 2 S溶液实现吸附剂上金/银的脱附。该方法简化流程，操作简单，吸附剂简单易得，金/银吸附效果好，同时实现了金/银的高效脱附。

Method for preparing surface-imprinted polyacrylate microsphere in the form of core-shell for the selective separation of heavy metal ion

중금속 이온의 선택적 분리를 위해 코어-쉘(Core-shell) 중합방법에 의해서 분자 각인 고분자가 제조되었다. 코어-쉘 중합방법에 의해 제조된 분자 각인 고분자는 2단계의 과정을 거쳐서 제조된다. 하나의 예로서, 스티렌(styrene)과 디비닐벤젠(divinylbenzene :DVB)을 이용하여 씨앗(seed) 입자를 제조하는 단계와 그 씨앗입자 표면에 금속이온 각인고분자를 형성하게 하는 단계를 이용하여 제조될 수 있다. 이 방법에 의해 제조된 각인 고분자는 각인 사이트가 지지체(예, PS 비드)의 표면에 존재함으로써 중금속 이온 분리 시간을 단축시킬 수 있을 뿐만 아니라 계면활성제나 안정제의 사용도 불필요하기 때문에 경제적으로 환경적으로 매우 유리하다. Molecular imprinted polymer was prepared by core-shell polymerization method for selective separation of heavy metal ions. The molecular imprinted polymer produced by the core-shell polymerization method is prepared through a two step process. As an example, the method may be performed using a method of preparing seed particles using styrene and divinylbenzene (DVB) and forming a metal ion imprinted polymer on the surface of the seed particles. Can be. The marking polymer produced by this method is economically and environmentally friendly because the marking site is present on the surface of the support (eg PS beads), which not only shortens the heavy metal ion separation time but also requires the use of a surfactant or a stabilizer. Very advantageous. 분자각인 고분자, 분자각인 중합체, 중금속, 분리 Molecular imprinted polymer, Molecular imprinted polymer, Heavy metal, Separation

Пористые частицы привитого сополимера, способ их получения и адсорбирующий материал, в котором они применяются

Изобретение относится к пористым частицам привитого сополимера, предназначенным для получения адсорбирующего материала, которые адсорбируют металлы и другие вещества, способу их производства и адсорбенту, в котором они применяются. Пористые частицы привитого сополимера содержат по меньшей мере одну смолу, выбранную из олефиновых смол, водонерастворимых модифицированных смол на основе поливинилового спирта, амидных смол, целлюлозных смол, хитозановых смол и (мет)акрилатных смол. Причем смола содержит введенную в нее прививочную цепь, включающую структурное звено, в состав которого входит функциональная группа. Размер частицы находится в диапазоне от 10 мкм до 2000 мкм, средний диаметр пор на поверхности частицы находится в диапазоне от 0,01 мкм до 50 мкм, и степень прививки находится в диапазоне от 30 до 900 частей по массе на 100 частей по массе смолы. 3 н. и 17 з.п. ф-лы, 11 табл. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 647 599 C2 (51) МПК C08J 9/36 (2006.01) B01D 15/00 (2006.01) B01J 20/26 (2006.01) B01J 20/30 (2006.01) C08F 255/02 (2006.01) C08J 9/26 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА C22B 3/24 (2006.01) ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ C22B 7/00 (2006.01) (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B01J 15/00 (2017.08); B01J 20/264 (2017.08); B01J 20/28004 (2017.08); B01J 20/30 (2017.08); B01J 20/3014 (2017.08); B01J 20/3028 (2017.08); C08F 255/02 (2017.08); C08J 3/12 (2017.08); C08J 9/26 (2017.08) (21)(22) Заявка: 2015120060, 29.10.2013 29.10.2013 Дата регистрации: 16.03.2018 30.10.2012 JP 2012-238998; 15.11.2012 JP 2012-250757; 15.11.2012 JP 2012-250758; 23.01.2013 JP 2013-010411; 14.03.2013 JP 2013-051931; 31.07.2013 JP 2013-158515 (56) Список документов, цитированных в отчете о поиске: US 2005065282 A1, 24.03.2005. US C 2 C 2 (43) Дата публикации заявки: 20.12.2016 Бюл. № 35 2004/023029 A1, 05.02.2004. EP1437376 A1, 14.07.2004. WO 2012/43347 Al, 05.04.2012. EA 17034 B1, 28.09.2012. EP 1512725 A1, 09.03.2005. EP 2010-233825 A, 21.10.2010. JP 2004-83561, 18.03. ...

Способ извлечения скандия из скандийсодержащего сырья

Изобретение относится к технологии извлечения скандия из различных видов сырья и техногенных отходов, и может быть использовано для концентрирования и извлечения скандия из скандийсодержащих руд, полупродуктов и других материалов, в частностискандийсодержащих шламов и кеков, образующихся при переработке ниобий- и танталсодержащих руд и концентратов. Извлечение скандия из скандийсодержащего сырья включает подготовку исходного сырья к сорбционному выщелачиванию в системе «пульпа - сорбент» путем приготовления пульп раствором гидроксида натрия при температуре 50-80°С. Используют фосфорсодержащие ионообменные сорбентами. Процесс сорбционного выщелачивания ведут непрерывно в противоточном режиме с контролем рН пульпы, который поддерживают в диапазоне 9,2-10,4 посредством введения соединений, содержащих карбонат натрия или CO 2 – содержащими газами. После чего осуществляют промывку и отделение сорбента от пульпы, конверсию сорбента, последующую десорбцию скандия карбонатными растворами, отмывку сорбента от десорбирующего раствора с использованием его на дальнейшей стадии сорбции. Проводят очистку осадка от примесей с последующим получением скандиевого концентрата. Способ позволяет улучшить процесс отделения скандия от остальных примесных элементов, повысить степень его извлечения за счет оптимально подобранного сорбента и условий проведения процесса. 3 з.п. ф-лы, 1 ил., 8 табл. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 694 866 C1 (51) МПК C22B 59/00 (2006.01) C22B 3/24 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C22B 59/00 (2019.05); C22B 3/24 (2019.05) (21)(22) Заявка: 2019104409, 18.02.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: 17.07.2019 (45) Опубликовано: 17.07.2019 Бюл. № 20 2 6 9 4 8 6 6 R U (56) Список документов, цитированных в отчете о поиске: RU 2582425 C1, 27.04.2016. RU 2603418 C1, 27.11.2016. RU 95103390 A1, 10.12.1996. KZ 23180 A4, 15.11.2010. WO 2013138900 A1, 26.09. ...

Recovering method of platinum from platinum scrap leaching solution using synthetic extraction resins

PURPOSE: A recovering method of platinum from platinum scrap leachate using synthetic extraction resins is provided to separate iron(Fe) and aluminum(Al) by using a first synthetic extraction resin synthesized by using D2EHPA (di-(2-ethylhexyl)phosphoric acid) and also to separate only platinum(Pt) from rhodium(Rh) by using a second synthetic extraction resin synthesized by using TBP(Thyroxine Binding Protein). CONSTITUTION: A recovering method of platinum from platinum scrap leachate using synthetic extraction resins comprises the following steps. A first synthetic extraction resin and a second synthetic extraction resin are produced by being synthesized by a suspension polymerization method. The first synthesis extraction resin is injected in the platinum scrap leachate. The Aluminum(Al) and iron(Fe) of platinum scrap leachate are absorbed in the first synthesis extraction resin by stirring and reacting the first synthesis extraction resin and platinum scrap leachate at the temperature of 35 to 55°C, and the first synthesis extraction resin, in which the Aluminum and iron are absorbed, is removed. The second synthesis extraction resin is added to the platinum scrap leachate in which the first synthesis extraction resin is removed, and the platinum of platinum scrap leachate is absorbed in the second synthesis extraction resin. The second synthesis extraction resin, in which the platinum is absorbed, is removed, and the platinum is recovered by detaching the platinum from the second synthesis extraction resin by using detaching solution.

Apparatus for recovery of precious metal and recovery method using the same

본 발명은 폐액 내에 존재하는 유가금속을 흡착시켜 폐액으로부터 분리하여 회수하는 회수 장치 및 이를 이용한 유가금속 회수 방법에 관한 것으로, 폐액이 통과되면서 폐액 내 유가금속이온이 선택적으로 흡착되는 흡착수단이 설치되고, 상기 흡착수단의 외부를 감싸도록 배치되며, 상기 흡착수단에 흡착된 유가금속이온을 환원된 금속 형태로 회화(Incineration)시킬 수 있는 회화수단을 구비하는 유가금속 회수부 및 상기 흡착수단으로 고온의 열풍을 안내하여 상기 열풍에 의해 상기 흡착수단을 건조시킬 수 있도록, 열선이 내장된 급속가열수단을 구비하는 급속가열부를 포함하는 유가금속 회수 장치 및 이를 이용한 유가금속 회수방법을 제공한다. The present invention relates to a recovering apparatus for recovering valuable metals present in a waste liquid by separating and recovering them from a waste liquid, and a method for recovering valuable metals using the recovering apparatus, wherein an adsorption means is provided in which waste metal ions in the waste liquid are selectively adsorbed A valuable metal recovery unit disposed to surround the outside of the adsorption unit and capable of incising the valuable metal ion adsorbed on the adsorption unit into a reduced metal form, There is provided a valuable metal recovering apparatus including a rapid heating unit including a rapid heating means having a hot wire so that hot air can be guided to dry the adsorption means by the hot air, and a valuable metal recovering method using the same.

Method of gallium extraction from aqueous strong alkalinous solution of sodium aluminate

Изобретение касаетс  извлечени  галли  из водных сильнощелочных алюминатных растворов, Цель изобретени  - повышение степени извлечени  галли  непосредственно из растворов производства Байера. Извлечение галли  из указанных растворов, содержащих 80-140 г/л гидроокиси натри , 60- 110 г/л окиси алюмини  и 150-350мг/л галли , осуществл ют путем пропускани  их при 40-60°С через микропористую адсорбирующую смолу на поли- стирольной основе непол рного и гидрофобного характера, пропитанную органическим реагентом в качестве которого используют 7-(5,5,7,7-тетраме- тил-1-октен-3-ил)-8-оксихинолин в количестве 250-350 г на 1 л сухой смолы, разбавленного от 10 до 30 мас.% этанолом Десорбцию осуществл ют после промывки насыщенной смолы водой раствором серной кислоты. Извлечение галли  непосредственно из растворов Байера составл ет 3,75 г на 1л смолы в колонне. 1 з.п. ф-лы. ле (Л

구리이온 회수용 복합전극과 이를 포함하는 복합전극 모듈, 복합전극 모듈 시스템 및 이의 제조방법, 이를 이용한 구리이온 회수방법

본 발명은 기재의 일면 또는 양면에 코팅층을 포함하며, 상기 코팅층은 키토산, 폴리비닐알코올 및 탄소계 도전체를 포함하는 구리이온 회수용 복합전극과 이를 포함하는 복합전극 모듈, 복합전극 모듈 시스템 및 이의 제조방법, 이를 이용한 구리이온 회수방법에 관한 것이다.

Method of removing molybdenum admixtures from manganese sulfate solution

1. СПОСОБ ОЧИСТКИ РАСТВОРА СУЛЬФАТА МАРГАНЦА ОТ ПРИМЕСЕЙ МОЛИБДЕНА путем адсорбции его двуокисью мар ганца, отличающийс  тем, что, с целью интенсификации процесса, адсорбцию ведут электролитически осажденной двуокисью марганца с размером частиц 0,5-5 мм. 2. Способ по п.1,отличающ и и с   тем, что регенерацию адсорбента ведут промывкой 5-25%-ным раствором едкого натра. 1. A method for purifying a manganese sulphate solution from molybdenum impurities by adsorbing manganese dioxide to it, characterized in that, in order to intensify the process, electrolytically precipitated manganese dioxide with a particle size of 0.5-5 mm is adsorbed. 2. The method according to claim 1, characterized by the fact that the adsorbent is regenerated by washing with 5-25% sodium hydroxide solution.

Method for recovering gallium

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Method for reduction of precious metal from carboniferous ores

FIELD: reduction of precious metals from carboniferous ore. SUBSTANCE: method includes leaching of ore with solution of leaching agent and concentration of compounds of precious metal with leaching agent in solution on natural carboniferous component of ore for subsequent reduction. Absorbing volume of natural carboniferous component of ore may be supplemented by addition of recycled carboniferous substance or finely ground carbon to mixture of ore with leaching agent. After separation of carboniferous component of ore from barren rock. Barren rock material may be treated with the help of the processes of hot addition of carbon to leaching agent for further increase of reduction of precious metal. EFFECT: higher efficiency. 36 cl, 16 dwg, 3 tbl СОУЗОТсС ПЧ Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) ВИ” 2108 402‘ (51) МПК 13) СЛ С 22 В 11/00, 3/24 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 94026267/02, 10.09.1993 (30) Приоритет: 22.09.1992 Ш$ 07/950.576 03.05.1993 1$ 08057.300 (46) Дата публикации: 10.04.1998 (56) Ссылки: Лодейщиков В.В. Извлечение золота из упорных руд и концентратов. - М.: Недра, 1968, с. 177 - 185. (86) Заявка РСТ: 4$ 9308488 (10.09.93) (71) Заявитель: Джеобиотикс, Инк (0$) (72) Изобретатель: Вильям Дж.Кохр[Ц$] (73) Патентообладатель: Джеобиотикс, Инк (05) (54) СПОСОБ ВОССТАНОВЛЕНИЯ ДРАГОЦЕННОГО МЕТАЛЛА ИЗ УГЛЕРОДИСТЫХ РУД (57) Реферат: Способ может быть использован для восстановления драгоценных металлов из углеродистой руды. Включает выщелачивание руды раствором выщелачивателя и — концентрирование соединений драгоценного металла С выщелачивателем в растворе на природном углеродистом компоненте руды для последующего восстановления. Поглощающий объем природного углеродистого компонента руды может пополняться за счет добавления рециклированного углеродистого вещества или тонкоизмельченного углерода в смесь руды с выщелачивателем. После отделения углеродистого компонента руды от пустой породы материал ...

Sorption apparatus

FIELD: technological processes. SUBSTANCE: invention relates to devices for sorption extraction of useful components from solutions and pulps and can be used in hydrometallurgy of rare, non-ferrous and noble metals. Sorption apparatus comprises a housing, an air-lift, a circulator, a disperser, branch pipes for feeding and discharging pulp or solution, as well as a sorbent, a drain located below the pulp level. Drainage is made in the form of a submersible drainage device with a converging bottom and with a drain tube, providing removal from the apparatus by gravity of pulp or solution. Disperser is located inside the circulator and is connected to the compressed air feed branch pipe and is made in the form of a perforated pipe on the outer surface of which elastic elements are arranged. EFFECT: disclosed design allows for continuous process of sorption from solution or pulp to improve reliability of device, simplify its maintenance, reduce operating costs by reducing losses of expensive sorbent. 12 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 709 556 C1 (51) МПК C22B 3/02 (2006.01) B01D 15/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C22B 3/02 (2019.08); B01D 15/00 (2019.08) (21)(22) Заявка: 2019132281, 14.10.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: Приоритет(ы): (22) Дата подачи заявки: 14.10.2019 (56) Список документов, цитированных в отчете о поиске: SU 1187870 A1, 30.10.1985. RU 2268086 C2, 20.01.2006. UA 81920 C2, 25.10.2008. KZ 22494 B, 15.03.2012. RU 2022038 C1, 30.10.1994. WO 9629439 A1, 26.09.1996. (45) Опубликовано: 18.12.2019 Бюл. № 35 2 7 0 9 5 5 6 R U (54) СОРБЦИОННЫЙ АППАРАТ (57) Реферат: Изобретение относится к устройствам для сорбционного извлечения полезных компонентов из растворов и пульп и может быть использовано в гидрометаллургии редких, цветных и благородных металлов. Сорбционный аппарат содержит корпус, эрлифт, циркулятор, диспергатор, ...

Extraction of uranium

FIELD: chemical or physical processes. SUBSTANCE: invention relates to a method of extracting uranium from uranium-loaded resin. Solution (A) is brought into contact with resin (A) to obtain a mixture of solution (B) and resin (B). Solution (A) is an aqueous solution containing dissolved sodium carbonate, sodium bicarbonate or a mixture thereof, and resin (A) is a strongly acidic cation-exchange resin, which contains one or more cationic fragments, which contain uranium, and one or more cationic fragments, which contain iron. Solution (B) containing uranium is separated from resin (B). Strongly acidic cation-exchange resin is a polymer, in which 50 mol. % or more of polymerised links contain one or more sulphonate groups covalently bonded to said polymerised link, and the sulphonate group is in a protonated form, in a neutralized form, including one or more cations other than H + , in an ionic form or in a mixture thereof. EFFECT: method provides efficient extraction of uranium, and at the same time provides separation of iron from uranium. 6 cl, 6 dwg, 2 tbl, 5 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 769 404 C2 (51) МПК C22B 60/02 (2006.01) C22B 3/24 (2006.01) C01G 43/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C22B 60/0265 (2021.08); C22B 3/24 (2021.08); C01G 43/00 (2021.08) (21)(22) Заявка: 2019137551, 18.05.2018 (24) Дата начала отсчета срока действия патента: Дата регистрации: (73) Патентообладатель(и): ДАУ ГЛОУБЛ ТЕКНОЛОДЖИЗ ЛЛК (US) 31.03.2022 02.06.2017 EP 17290073.0 (43) Дата публикации заявки: 24.05.2021 Бюл. № 15 (45) Опубликовано: 31.03.2022 Бюл. № 10 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 22.11.2019 (56) Список документов, цитированных в отчете о поиске: US 8557201 B1, 15.10.2013. Некрасова Н.Н. Сорбция урана и тория на ионообменных материалах из растворов сложного солевого состава, автореферат на соискание ученой степени кандидата химических наук. Москва, ...

A kind of preparation method of the magnetic mesoporous imprinted material of sandwich structure of energy separating indium

本发明涉及一种能分离铟的三明治结构磁性介孔印迹材料的制备方法，采用水热法合成了超顺磁性Fe 3 O 4 纳米团簇，结合十六烷三甲基溴化铵模板法，采用铟离子作为模板离子，以带官能团的硅氧烷作为功能单体，利用硅酸酯类溶胶凝胶法合成对铟离子有高选择性的分子印迹介孔材料。本发明优点在于能分离铟的三明治结构磁性介孔印迹材料对铟有特异识别能力、具有高磁响应性、高吸附容量、高吸附速率、强抗酸碱性，并且可在实现对铟的高效富集与分离的同时简化液固分离流程。

Method of separating platinum (ii, iv) and palladium (ii) from silver (i), iron (iii) and copper (ii) in hydrochloric acid solutions

FIELD: chemical or physical processes. SUBSTANCE: invention relates to separation and concentration and can be used for separation of platinum metals from silver, iron and copper in hydrochloric acid solutions by sorption method. Pt (II, IV) and Pd (II) are separated from Ag (I), Fe (III) and Cu (II) by sorption from freshly prepared hydrochloric acid solutions using Purolite S985 anionite as a sorbent in chloride form and subsequent desorption of platinum metals with thiourea solution at temperature of 18 °C. Sorption and desorption are carried out under dynamic conditions. Corbtion is carried out in the concentration range: HCl 0.01–4.0 mol/l, Cu (II) – 3.125 mmol/l, Ag (I) – 0.95 mmol/l, Pt (II, IV) – 0.25 mmol/l, Pd ( II) – 0.25 mmol/l, Fe (III) – 0.25 mmol/l. Desorption is carried out by successively passing corresponding solutions of eluents through a layer of anionite, saturated with metal ions, wherein copper is desorbed first with 2.0 M HNO 3 solution and initial concentration of Cu (II) 3.125 mmol/l, then iron and silver solution of 10.0 % ammonia with initial concentrations of Fe (III) and Ag (I) 0.25 mmol/l and 0.95 mmol/l respectively. Desorption of platinum and palladium is carried out at initial concentration of Pt (II, IV) and Pd (II) 0.25 mmol/l. EFFECT: method increases degree of extraction and desorption of metal ions while simplifying the process. 1 cl, 1 dwg, 3 tbl, 1 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 694 855 C1 (51) МПК C22B 11/00 (2006.01) C22B 3/24 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C22B 11/00 (2019.05); C22B 3/24 (2019.05) (21)(22) Заявка: 2019105042, 22.02.2019 (24) Дата начала отсчета срока действия патента: 17.07.2019 Приоритет(ы): (22) Дата подачи заявки: 22.02.2019 (45) Опубликовано: 17.07.2019 Бюл. № 20 2 6 9 4 8 5 5 R U (54) СПОСОБ ОТДЕЛЕНИЯ ПЛАТИНЫ (II, IV) И ПАЛЛАДИЯ (II) ОТ СЕРЕБРА (I), ЖЕЛЕЗА (III) И МЕДИ (II) В СОЛЯНОКИСЛЫХ РАСТВОРАХ (57) Реферат: ...

Adsorbent composition, method of its production and use

FIELD: adsorbing compositions. SUBSTANCE: in particular, the invention relates to adsorbent compositions, methods for production thereof and their use, for example, in separation of precious metals during ore processing. Adsorbing composition contains at least one core containing at least one thermoplastic material; and at least one coating, which at least partially covers at least one core, where at least one coating contains at least one adsorbent material, where adsorbing material adheres by van der Waals forces and/or mechanical adhesion to at least one core. EFFECT: invention provides adsorbing compositions which can be used as a pure activated carbon substitute for reducing loss of gold as a result of formation of fine coal particles, in particular, as pure activated carbon substitute to achieve efficient extraction of gold from solutions with high concentration of gold, such as leaching solutions, and from solutions with low concentration of gold, such as mine waste water. 152 cl, 3 tbl, 3 ex, 19 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 739 923 C9 (51) МПК B01J 20/02 (2006.01) B01J 20/26 (2006.01) B01J 20/30 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) СКОРРЕКТИРОВАННОЕ ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ Примечание: библиография отражает состояние при переиздании (52) СПК B01J 20/02 (2020.05); B01J 20/26 (2020.05); B01J 20/30 (2020.05) (21)(22) Заявка: 2018137707, 05.05.2017 05.05.2017 (73) Патентообладатель(и): ГОЛДКОРП ИНК. (US) Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 08.06.2020 Бюл. № 16 (45) Опубликовано: 29.12.2020 (15) Информация о коррекции: Версия коррекции №1 (W1 C2) (48) Коррекция опубликована: (85) Дата начала рассмотрения заявки PCT на национальной фазе: 06.12.2018 C 9 C 9 01.03.2021 Бюл. № 7 (56) Список документов, цитированных в отчете о поиске: CA 2285307 A1, 05.11.1998. ROSSIER M. et al. "Gold Adsorption on the Carbon Surface of C/Co Nanoparticles Allows Magnetic Extraction from Extremely ...