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公开(公告)号：EP3052667B1
公开(公告)日：2018-12-05
申请号：EP14802700.6
申请日：2014-10-02
申请人： Outotec (Finland) Oy
CPC分类号： C22B11/04 , C22B3/06 , C22B3/08 , C22B3/10 , Y02P10/234
摘要： The invention relates to a method and an apparatus for separating precious metals, especially platinum group metals and gold and silver,and optionally base metals from a starting material containing the same by a combination of pressure oxidative leaching and atmospheric halide leaching.
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公开(公告)号：EP3342886A1
公开(公告)日：2018-07-04
申请号：EP16839356.9
申请日：2016-08-25
申请人： Hitachi Metals, Ltd.
发明人： HOSHI Hiroyuki
CPC分类号： C22B59/00 , C22B3/10 , C22B7/00 , C22B7/007 , Y02P10/234
摘要： An object of the present invention is to provide a method useful for separating a light rare earth element and a heavy rare earth element, which, for example, when a light rare earth element and a heavy rare earth element are separated from a workpiece containing a light rare earth element and a heavy rare earth element by a solvent extraction method, makes it possible to reduce the amount of extractant or organic solvent used or downsize the apparatus, or makes it possible to reduce the work burden on the process, such as the analysis of the content ratio between the light rare earth element and the heavy rare earth element contained in the workpiece. The method of the present invention as a means for resolution is characterized by including at least:
(1) a step of obtaining, from a workpiece containing a light rare earth element and a heavy rare earth element, a composite oxide or mixture of oxides of the two;
(2) a step of dissolving the obtained composite oxide or mixture of oxides of a light rare earth element and a heavy rare earth element in hydrochloric acid and/or nitric acid;
(3) a step of adding a precipitant to the obtained solution to give a precipitate;
(4) a step of calcining the obtained precipitate;
(5) a step of adding the obtained calcine in an amount of 1.1 times to 3.0 times the upper solubility limit to hydrochloric acid and/or nitric acid having a concentration of 0.7 mol/L or more to give a solution and a residue; and
(6) a step of separating the obtained solution and residue, thereby giving the solution as a light rare earth element-rich inclusion and the residue as a heavy rare earth element-rich inclusion (here, the term "rich" means that the content ratio of the concerned rare earth element to the other rare earth element is higher than the content ratio in the workpiece).-
公开(公告)号：EP2888380B1
公开(公告)日：2017-05-03
申请号：EP13783980
申请日：2013-08-21
申请人： BHP CHILE INC
CPC分类号： C22B15/0069 , C22B1/00 , C22B1/16 , C22B3/06 , C22B3/10 , C22B15/0008 , C22B15/0067 , Y02P10/234 , Y02P10/236
摘要： A process of extracting copper from copper sulphide minerals which is enhanced at solution potentials exceeding 700 mV SHE, in the absence of any microorganism, by contacting the minerals in a pre-treatment phase using an acid solution at a high chloride content containing dissolved copper.
摘要翻译： 在没有任何微生物的情况下，通过使用含有溶解铜的高氯化物含量的酸溶液在预处理阶段接触矿物质，在硫酸铜矿物中提取铜的过程在溶液电位超过700mV SHE时增强。
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公开(公告)号：EP2802675A4
公开(公告)日：2016-07-13
申请号：EP13735714
申请日：2013-01-10
申请人： ORBITE ALUMINAE INC
IPC分类号： C22B3/10 , C01B13/18 , C01F7/00 , C01F7/02 , C01F7/38 , C01G23/02 , C01G23/04 , C01G49/00 , C22B3/46 , C22B21/00 , C22B34/12
CPC分类号： C22B34/1245 , C01B13/18 , C01D5/02 , C01F7/066 , C01F7/22 , C01F7/306 , C01G23/001 , C01G23/022 , C01G23/0536 , C01G23/07 , C01G49/06 , C01G51/003 , C01G51/04 , C01G53/003 , C01G53/04 , C22B7/007 , C22B21/0023 , C22B34/1259 , Y02P20/129
摘要： There are provided processes for treating red mud. For example, the processes can comprise leaching red mud with HCl so as to obtain a leachate comprising ions of a first metal (for example aluminum) and a solid, and separating said solid from said leachate. Several other metals can be extracted from the leachate (Fe, Ni, Co, Mg, rare earth elements, rare metals, etc.). Various other components can be extracted from solid such as TiO2, SiO2 etc.
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公开(公告)号：EP2888380A1
公开(公告)日：2015-07-01
申请号：EP13783980.9
申请日：2013-08-21
申请人： Bhp Chile Inc.
CPC分类号： C22B15/0069 , C22B1/00 , C22B1/16 , C22B3/06 , C22B3/10 , C22B15/0008 , C22B15/0067 , Y02P10/234 , Y02P10/236
摘要： A process of extracting copper from copper sulphide minerals which is enhanced at solution potentials exceeding 700 mV SHE, in the absence of any microorganism, by contacting the minerals in a pre-treatment phase using an acid solution at a high chloride content containing dissolved copper.
摘要翻译： 在不存在任何微生物的情况下，通过使用含有溶解铜的高氯化物含量的酸溶液在预处理阶段使矿物接触，从溶解电位超过700mV SHE的硫化铜矿物中提取铜的方法。
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公开(公告)号：EP2755918A4
公开(公告)日：2015-07-01
申请号：EP12831988
申请日：2012-09-17
申请人： ORBITE ALUMINAE INC
CPC分类号： C22B3/44 , C01B33/12 , C01B33/126 , C01B33/187 , C01D3/04 , C01D5/02 , C01F5/10 , C01F5/30 , C01F5/32 , C01F7/22 , C01F7/30 , C01F7/56 , C01F17/0043 , C01G23/0475 , C01G49/02 , C01G49/06 , C01G49/10 , C01P2006/80 , C21B15/006 , C22B3/10 , C22B21/0015 , C22B21/0046 , C22B21/0053 , C22B26/22 , C22B34/1245 , C22B59/00 , Y02P10/234 , Y02P20/129
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公开(公告)号：EP2791373A1
公开(公告)日：2014-10-22
申请号：EP12858007.3
申请日：2012-12-10
发明人： LAKSHMANAN, Vaikuntam I. , SRIDHAR, Ramamritham , CHEN, Jonathan , HALIM, M.A. , DELAAT, Robert
CPC分类号： C21B3/00 , C22B3/0021 , C22B23/0423 , Y02P10/234
摘要： The invention provides a process for the leaching of a laterite ore, concentrate, tailings or waste rock for the recovery of value metals, at least one value metal being nickel. The laterite ore or concentrate is subjected to a leaching step with a lixiviant comprising hydrochloric acid to leach nickel from the laterite ore, followed by a liquid/solids separation step. The liquid obtained is subject to solvent extraction with a dialkyl ketone, to obtain a solution rich in iron and a raffinate. Separation of iron from cobalt and nickel is obtained.
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公开(公告)号：EP2475792B1
公开(公告)日：2014-10-22
申请号：EP10757838.7
申请日：2010-09-09
发明人： NEL, Johannes, Theodorus , DU PLESSIS, Wilhelmina , CROUSE, Philippus, Lodewyk , LE ROUX, Johannes, Petrus , RETIEF, Willem Dempers
CPC分类号： C22B3/10 , C22B34/10 , C22B34/1213 , C22B34/14 , C22B34/24 , Y02P10/234
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公开(公告)号：EP2705169A1
公开(公告)日：2014-03-12
申请号：EP12779978.1
申请日：2012-05-03
申请人： Orbite Aluminae Inc.
发明人： BOUDREAULT, Richard , PRIMEAU, Denis , FOURNIER, Joel , SIMONEAU, Raymond , GARCIA, Maria Cristina , KRIVANEC, Heinz , DITTRICH, Carsten
CPC分类号： C22B59/00 , C22B3/0005 , C22B3/10 , C22B3/46 , C22B26/12 , C22B34/14 , C22B34/34 , C22B58/00 , Y02P10/234
摘要： The present disclosure relates to processes for recovering rare earth elements from various materials. The processes can comprise leaching the at least one material with at least one acid so as to obtain a leachate comprising at least one metal ion and 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 metal 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.
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20.发明公开PROCESS FOR THE RECOVERY OF TITANIUM DIOXIDE AND VALUE METALS BY REDUCING THE CONCENTRATION OF HYDROCHLORIC ACID IN LEACH SOLUTION AND SYSTEM FOR SAME 审中-公开中回收二氧化钛和贵金属通过减少HYDRO氯膦酸的浓度，浸出及其系统
公开(公告)号：EP2531628A1
公开(公告)日：2012-12-12
申请号：EP11739307.4
申请日：2011-02-04
发明人： HARRIS, Bryn , WHITE, Carl
CPC分类号： C22B34/1245 , C22B3/22 , C22B3/44 , C22B34/1259 , C22B34/22 , Y02P10/234
摘要： The present invention describes a process and system for recovering titanium dioxide and other value metals from a titanium bearing solid. The process comprises (a) leaching the solid in hydrochloric acid to produce a leachate comprising undissolved solids and a leach solution comprising the titanium dioxide and the value metals, wherein the hydrochloric acid concentration is maintained above a value required to maintain the titanium dioxide and the value metals dissolved in the leach solution at atmospheric pressure; (b) separating the leachate into the leach solution and the undissolved solids; and (c) reducing the concentration of hydrochloric acid concentration in the leach solution to recover titanium dioxide by hydrolysis and precipitation to produce a titanium dioxide rich slurry. In a preferred embodiment, HCl is recovered with a matrix solution.
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