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1. 发明申请

WO2023077215A1 PROCESS OF EXTRACTING NICKEL SULFATE FROM ASBESTOS MINING RESIDUE 审中-公开
公开(公告)号：WO2023077215A1
公开(公告)日：2023-05-11
申请号：PCT/CA2022/051605
申请日：2022-10-31
申请人： ALLIANCE MAGNESIUM
发明人： FOURNIER, Joel , BARBAROUX, Romain , COURCY, Real
IPC分类号： C22B3/08 , B01D11/02 , C22B1/00 , C22B3/10 , C22B3/22 , C22B3/26 , C22B3/42 , C22B23/00 , C22B26/22
摘要： It is provided a process for extracting nickel sulfate from mining ores, such as serpentine, comprising the steps of conducting a magnetic separation of the mining ores producing a magnetic fraction and a non magnetic fraction; leaching the non magnetic fraction with HCI producing a slurry comprising metals chloride; filtrating the slurry producing a metals chloride liquor; purifying the metals chloride liquor producing a magnesium chloride solution; separating an iron-nickel cake from the magnesium chloride solution; leaching the cake together with the magnetic fraction producing a metallic sulfate solution; extracting nickel and cobalt from the metallic sulfate solution by a ion exchange resin extraction and stripping producing an inorganic stripped phase; submitting the inorganic stripped phase to a liquid-liquid extraction producing a nickel concentrated phase; and evaporating and drying the nickel concentrated phase to recuperate nickel sulfate.

2. 发明申请

WO2023058548A1 一価金属イオンの回収方法审中-公开
公开(公告)号：WO2023058548A1
公开(公告)日：2023-04-13
申请号：PCT/JP2022/036419
申请日：2022-09-29
申请人：東レ株式会社
发明人：吉冨慎一郎 , 花田茂久 , 小岩雅和 , 征矢恭典 , 岡本宜記 , 吉崎友哉 , 宮本竜馬
IPC分类号： B01D61/02 , B01D61/58 , B01D63/10 , B01D63/12 , B01D69/02 , C22B23/00 , C22B26/12 , C22B47/00 , C22B3/22 , C02F1/44
摘要：一価金属イオンおよび多価金属イオンが含まれる溶液から、ナノろ過膜と逆浸透膜を用いて、高純度の一価金属イオン回収溶液を高回収率で得るため、　一価金属イオンおよび多価金属イオンを含む溶液から、ナノろ過膜ユニットと逆浸透膜ユニットを用いて、一価金属イオンを回収する方法であって、（ａ）Ｎは２以上の整数の定数であり、ｎは１以上（Ｎ－１）以下の整数であり、第１～第Ｎのナノろ過膜ユニットを用いて、第ｎのナノろ過膜ユニットの濃縮液を第（ｎ＋１）のナノろ過膜ユニットに供給することで、濃縮方向ＤＮＦにおける多段階のナノろ過を行う濃縮多段ＮＦ工程と、（ｂ）前記逆浸透膜ユニットにより、前記第１のナノろ過膜ユニットの透過液から、ＲＯ透過液と、前記ＲＯ透過液よりも高い濃度の一価金属イオンを含むＲＯ濃縮液とを得るＲＯ工程と、（ｃ）前記第（ｎ＋１）のナノろ過膜ユニットの透過液を、該第（ｎ＋１）のナノろ過膜ユニットよりも上流側に配された任意のナノろ過膜ユニットの供給液に混合するＮＦ供給液希釈工程と、（ｄ）前記逆浸透膜ユニットの透過液を前記第Ｎのナノろ過膜ユニットの供給液に混合する工程と、を有する一価金属イオンの回収方法とする。

3. 发明申请

WO2023022622A1 БЕЗОТХОДНАЯ ПЕРЕРАБОТКА РУД БОКСИТОВ И КРАСНОГО ШЛАМА 审中-公开
公开(公告)号：WO2023022622A1
公开(公告)日：2023-02-23
申请号：PCT/RU2022/050177
申请日：2022-06-05
申请人： КИДАКОВ, Сергей Владимирович
发明人： КИДАКОВ, Сергей Владимирович KIDAKOV, Sergei Vladimirovich
IPC分类号： C22B3/12 , C22B3/22 , C01F7/06 , C01F7/08 , C01F7/46
摘要： Изобретение относится к производству глинозема из бокситовых руд. Предложена классическая переработка бокситов по способу Байера в которой после мокрого измельчения осуществляют обработку пульпы ультразвуком, обратную и прямую флотацию с отделением серы и кремнезема из пульпы. При этом отделенный красный шлам подвергают противоточной промывке, мокрой магнитной сепарации для отделения части железного концентрата, отжиму, сушке, отжигу, сухой магнитной сепарации с отделением второй части железного концентрата и направляют на процесс холодного гидрохимического разложения содержащегося в нем гидроалюмосиликата натрия с получением геля кремниевой кислоты и остаточного шлама. Остаточный шлам направляют на повторную переработку на этап мокрого измельчения боксита. Обеспечивается переработка бокситов с высоким содержание кремнезема, увеличение выхода глинозема.

4. 发明申请

WO2022159785A1 RECOVERY OF METAL FROM LEACH PROCESSING 审中-公开
公开(公告)号：WO2022159785A1
公开(公告)日：2022-07-28
申请号：PCT/US2022/013446
申请日：2022-01-24
申请人： EXTRAKT PROCESS SOLUTIONS, LLC
发明人： KUJAWA, Christian , FLORMAN, William R.
IPC分类号： C22B3/06 , C22B3/22
摘要： A process of leaching a metal or salt thereof from a feed source includes combining an indifferent salt to a leach system to increase efficiency of the leach process as well as the subsequent leach residue liquid-solids separation. The process can include combining the feed source with a leaching reagent and an indifferent salt in a leach medium to form a feed slurry and leaching a metal or metal salt from the feed slurry in to a pregnant leach liquor followed by recovering metal salts from the pregnant leach liquor and recycling residual leach solution to form additional feed slurry. Such processes are suitable for large scale operations with high solids loading in the liquid-solids separation operations.

5. 发明申请

WO2022094706A1 TREATMENT PROCESS FOR CRYSTALLIZING A METAL SULFATE 审中-公开
公开(公告)号：WO2022094706A1
公开(公告)日：2022-05-12
申请号：PCT/CA2021/051557
申请日：2021-11-03
申请人： HATCH LTD.
发明人： FRASER, Robert John , VON SCHROETER, Henry Christian Immo , MACHADO, Mark Joseph
IPC分类号： C22B3/04 , C01B17/96 , C01G45/10 , C01G51/10 , C01G53/10 , C22B3/22 , C22B3/44 , C22B23/00 , C22B26/12 , C22B26/20 , C22B26/22 , C22B47/00
摘要： A treatment process for crystallizing a metal sulfate involving pre-treating a feedstock comprising calcium, magnesium, and/or lithium impurities, the pre-treating involving pre-leaching the feedstock in the presence of a lixiviant, selectively extracting a first portion of any of the impurities from the feedstock, and forming a leached solution comprising an uncrystallized metal sulfate and any remaining impurities; and/or refining the leached solution and removing a second portion of any of the remaining impurities; and crystallizing the uncrystallized metal sulfate from the leached solution to form a crystallized metal sulfate. So processed, the crystallized metal sulfate may be battery-grade or electroplating-grade.

6. 发明申请

WO2022078667A1 VERFAHREN ZUR RÜCKGEWINNUNG VON EDELMETALL AUS EDELMETALLHALTIGEN HETEROGENKATALYSATOREN 审中-公开
公开(公告)号：WO2022078667A1
公开(公告)日：2022-04-21
申请号：PCT/EP2021/073936
申请日：2021-08-31
申请人： HERAEUS DEUTSCHLAND GMBH & CO. KG
发明人： MAIER, Dirk , GEBAUER, Christian
IPC分类号： C22B1/00 , C22B3/10 , C22B3/22 , C22B3/44 , C22B11/00 , C25C1/20
摘要： Verfahren zur Rückgewinnung von Edelmetall aus einem Heterogenkatalysator umfassend ein festes Trägermaterial und zumindest teilweise elementar vorliegendes Palladium, Platin und/oder Rhodium, umfassend die Schritte: (a) Überführen des Edelmetalls in eine Oxidationsstufe > 0 durch Behandeln des Heterogenkatalysators mit Oxidationsmittel in Gegenwart von Salzsäure unter Bildung eines Zweiphasensystems A umfassend eine salzsaure wässrige Phase A1 und eine feste, das darin unlösliche Trägermaterial umfassende Phase, (b) optional, mindestens teilweises Abtrennen der salzsauren wässrigen Phase A1 aus dem Zweiphasensystem A und Zugabe einer weiteren wässrigen Phase zum verbliebenen Rest des Zweiphasensystems A unter Bildung eines Zweiphasensystems B umfassend eine salzsaure wässrige Phase B1 und eine feste, das darin unlösliche Trägermaterial umfassende Phase, und (c) kathodische Elektrodeposition des mindestens einen Edelmetalls aus der salzsauren wässrigen Phase des Zweiphasensystems.

7. 发明申请

WO2022022987A1 VERFAHREN ZUR GEWINNUNG VON GOLD UND SILBER AUS ROHSTOFFEN 审中-公开
公开(公告)号：WO2022022987A1
公开(公告)日：2022-02-03
申请号：PCT/EP2021/069146
申请日：2021-07-09
申请人： CENTURO AG
发明人： GOLDSTEIN, Jack , OSANU, Liana Rozica
IPC分类号： C22B1/00 , C22B3/04 , C22B3/14 , C22B3/22 , C22B3/46 , C22B5/10 , C22B11/00 , C25C1/20
摘要： Die Erfindung betrifft ein Verfahren zur Gewinnung von Gold und Silber aus Rohstoffen (1) wie Erze, Gangarten oder Nebenprodukte mit einem Mindestgehalt von 0,2 ppm Gold. Der Rohstoff (1) wird in einem Mahlschritt (2) durch Mahlen zerkleinert. In einem nachfolgenden Suspensionierungsschritt (3) entsteht durch Hinzufügen einer Ammoniumthiosulfatlösung (4), von Tetraamminkupfersulfat (5) und von Schwefel (6) eine Suspension (7). In einem darauffolgenden Auswaschschritt (8) erfolgt unter eingesprudelter Luft ein Auswaschen von in dem gemahlenen Rohstoff (1) enthaltenen Metallen mittels der Ammoniumthiosulfatlösung (4). In einem darauffolgenden Elektrolyseschritt entsteht die Ammoniumthiosulfatlösung (4) durch eine alkalische Elektrolyse der Suspension (7). Die Ammoniumthiosulfatlösung (4) wird in einem Rückführschritt (12) dem Suspensionierungsschritt (3) zurückgeführt. In einem dem Elektrolyseschritt (11) nachfolgenden Entkupferungsschritt (16) wird eine Extraktion des Kupfers aus der in dem Elektrolyseschritt (11) entstandenen Kupfer-Gold-Silber-Zementation (17) mittels einer wässrigen Ammoniaklösung (18) eine Gold-Silber-Zementation (19) durchgeführt. In einem Aufschmelzschritt (20) wird durch ein alkalisch-reduzierendes Aufschmelzen der Gold-Silber-Zementation (19) mit Natriumkarbonat und Kohle bei 1200 C eine Gold-Silber-Legierung (21) erzeugt. In einem Raffinationsschritt (22) wird durch elektrochemische Raffination der Gold-Silber-Legierung (21) Gold (23) und Silber (24) in einem Reinzustand gewonnen.

8. 发明申请

WO2021237274A1 PROCESS FOR RECOVERING TITANIUM DIOXIDE 审中-公开
公开(公告)号：WO2021237274A1
公开(公告)日：2021-12-02
申请号：PCT/AU2021/050460
申请日：2021-05-18
申请人： COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION
发明人： DAS, Goutam, Kumar
IPC分类号： C22B34/12 , C22B3/10 , C22B3/22 , C01G23/053 , C01G23/047
摘要： A process for recovering titanium dioxide from a titanium-bearing material, the process including the steps of: leaching the titanium-bearing material in a first leaching step at atmospheric pressure and at a temperature of 70 to 97°C with a first lixiviant to produce a first leach solution comprising undissolved first leach solids that include a titanium content and a first leach liquor, the first lixiviant comprising hydrochloric acid at a concentration of less than 23 % w/w; separating the first leach liquor and the undissolved first leach solids; leaching the first leach solids in a second leaching step at atmospheric pressure and at a temperature of 60 to 80°C with a second lixiviant in the presence of a Fe powder reductant to produce a second leach solution comprising undissolved second leach solids and a second leach liquor that includes a leached titanium content and iron content, the second lixiviant comprising a mixed chloride solution comprising less than 23 % w/w hydrochloric acid and an additional chloride selected from alkali metal chlorides, magnesium chloride and calcium chloride, or mixtures thereof; separating the second leach liquor and the undissolved second leach solids; and thereafter separating the titanium dioxide and the iron content from the second leach liquor by precipitation, and regenerating the second lixiviant for recycle to the second leaching step.

9. 发明申请

WO2021226719A1 HYDROMETALLURGICAL RECYCLING OF LITHIUM-ION BATTERY ELECTRODES 审中-公开
公开(公告)号：WO2021226719A1
公开(公告)日：2021-11-18
申请号：PCT/CA2021/050663
申请日：2021-05-14
申请人： QUEEN'S UNIVERSITY AT KINGSTON
发明人： SONOC, Alexandru , JESWIET, Jacob , GHAHREMAN, Ahmad
IPC分类号： C22B3/16 , C01D15/00 , C01D15/08 , C01G11/00 , C01G45/00 , C01G53/00 , C22B3/22 , C22B3/44 , C22B7/00 , H01M10/54 , C22B15/00 , C22B21/00 , C22B23/00 , C22B26/12
摘要： A green chemistry hydrometallurgical process for recovering one or more metals from a metal-containing material includes leaching the metal-containing material with formic acid, obtaining a leachate comprising the one or more metals as one or more metal formates, and precipitating at least one of the one or more metal formates. The metal-containing material may be a lithium-ion battery cathode material, resulting in Li formate remaining in solution and precipitation of salts including one or more of Ni, Co, and Mn formates. Steps may include filtration of the leachate, sulphurization of retained metal formate salts to produce metal sulphate salts, purification of filtered leachate by adding lithium carbonate and filtering, dewatering of the purified leachate, and thermal decomposition of resulting lithium salts to produce battery grade lithium carbonate. Carbon dioxide, water, and formic acid may be recovered and reused, without liquid or solid waste produced.

10. 发明申请

WO2021176037A1 METHOD FOR SELECTIVE SEPARATION OF THORIUM AND CERIUM FROM A SOLID CONCENTRATE COMPRISING SAME AND ONE OR MORE FURTHER RARE EARTH METALS AND ACIDIC RARE EARTH SOLUTION THEREOF 审中-公开
公开(公告)号：WO2021176037A1
公开(公告)日：2021-09-10
申请号：PCT/EP2021/055557
申请日：2021-03-05
申请人： YARA INTERNATIONAL ASA , REETEC AS
发明人： JØRGENSEN, Tom R. , RODAHL, Fredrik , SPORSTØL, Sigve
IPC分类号： C22B59/00 , C22B60/02 , C22B3/06 , C22B3/22 , C22B3/44
摘要： The present disclosure relates to a method for separating thorium and cerium from a solid concentrate comprising compounds of thorium, cerium and one or more further rare earth metals, obtainable by increasing to pH 1.8 the pH of an aqueous composition comprising from 6 to 21 weight% nitric acid, from 25 to 33 weight% phosphoric acid, from 3.5 to 5 weight% calcium, and amounts of thorium, cerium and one or more further rare earth metals, the weight% being relative to the total weight of the aqueous composition, and subsequently precipitating and separating the solid concentrate comprising the compounds of thorium and cerium. The method comprises the steps of a) contacting the solid concentrate with an acid such as to achieve a composition with a pH of less than 0.5, b) reacting the acid composition obtained in step a) with ozone or heating the acid composition obtained in step a) at a temperature ranging from 110 °C to 130 °C for a time period ranging from 1 to 3 hours, thereby oxidizing the cerium ions in the acid composition to an oxidation state of +IV, c) increasing, to at most 2, such as between 1 and 2, the pH value of the composition obtained in step b), resulting in the precipitation of thorium and cerium compounds, and d) separating the solid concentrate comprising the compounds of thorium and cerium from the composition obtained in step c) to obtain an aqueous acidic rare earth solution depleted in thorium and cerium. The present disclosure further relates to an aqueous acidic rare earth solution depleted in thorium and cerium, obtainable by a method according to the method of the disclosure.

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