公开(公告)号：EP4417581A1

公开(公告)日：2024-08-21

申请号：EP22880682.4

申请日：2022-09-08

申请人： Tsukishima Kikai Co., Ltd.

发明人： OKUYAMA Hiroki ,  HARUTA Tomoaki ,  OGAWA Ayako

IPC分类号： C01G51/10 ,  B01D9/02 ,  B04B3/00 ,  B04B15/12 ,  C22B3/44 ,  C22B23/00

CPC分类号： Y02W30/84 ,  B01D9/02 ,  B04B3/00 ,  B04B15/12 ,  C01G51/10 ,  C22B3/44 ,  C22B23/00

摘要： A method (40) for producing a cobalt sulfate crystal, which is performed for obtaining crystals of a cobalt sulfate heptahydrate from a cobalt sulfate-containing aqueous solution, the method includes a crystallization step (10) of subjecting a cobalt sulfate-containing aqueous solution (11) to evaporative concentration to obtain a slurry (12) containing cobalt sulfate crystals, a separation step (20) of subjecting the slurry (12) obtained in the crystallization step (10) to solid-liquid separation to obtain a dewatered cake (21) of the cobalt sulfate crystals, and a drying step (30) of drying the dewatered cake (21) obtained in the separation step (20) by a flash drying of bringing the dewatered cake (21) into direct contact with a drying medium (31) to obtain the cobalt sulfate crystals (41).

公开(公告)号：EP2872447B1

公开(公告)日：2016-12-28

申请号：EP13732498.4

申请日：2013-06-28

申请人： BASF SE

发明人： SCHRÖDLE, Simon ,  WAGNER, Oliver

IPC分类号： C01G51/10

CPC分类号： C01G51/10 ,  C01P2006/80

公开(公告)号：EP2872447A1

公开(公告)日：2015-05-20

申请号：EP13732498.4

申请日：2013-06-28

申请人： BASF SE

发明人： SCHRÖDLE, Simon ,  WAGNER, Oliver

IPC分类号： C01G51/10

CPC分类号： C01G51/10 ,  C01P2006/80

摘要： The invention relates to a method for producing an aqueous cobalt sulphate solution having a pH value of at least 4, characterised in that (a) metallic cobalt dissolves in aqueous sulfuric acid in an atmosphere which is low in oxygen, hydrogen or inert gas, and (b) the thus produced acidic cobalt sulphate solution is treated with oxygen, oxygen-containing gas or a substance which can eliminate the oxygen in an aqueous medium.

摘要翻译： 本发明涉及一种生产pH值至少为4的硫酸钴水溶液的方法，其特征在于（a）金属钴溶解在氧气，氢气或惰性气体含量低的气氛中的硫酸水溶液中，和 （b）用氧气，含氧气体或能消除含水介质中的氧的物质处理这样产生的酸性硫酸钴溶液。

公开(公告)号：EP2772557A1

公开(公告)日：2014-09-03

申请号：EP12844253.0

申请日：2012-10-17

申请人： Sumitomo Metal Mining Co., Ltd.

发明人： OZAKI Yoshitomo ,  NAKAI Takayuki ,  HEGURI Shinichi ,  OHARA Hideki

IPC分类号： C22B23/00 ,  C22B3/20 ,  C22B3/26 ,  C22B7/00 ,  H01M10/54

CPC分类号： C22B23/0461 ,  C01G51/10 ,  C01P2006/80 ,  C22B3/0005 ,  C22B7/007 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/54 ,  Y02E60/122 ,  Y02P10/234 ,  Y02P70/54 ,  Y02W30/84

摘要： Disclosed herein is a method for easily and efficiently removing manganese from an aqueous acidic solution of sulfuric acid containing cobalt and manganese at low cast to obtain a high-purity cobalt sulfate aqueous solution usable as a raw material for lithium ion secondary batteries.
The high-purity cobalt sulfate aqueous solution is obtained by mixing an aqueous acidic solution of sulfuric acid containing cobalt and manganese (aqueous phase) with an acidic organic extractant (organic phase) while adjusting the pH of the aqueous acidic solution of sulfuric acid to a value in a range between 2 and 4 with a pH adjuster such as sodium hydroxide to extract manganese into the organic phase. The acidic organic extractant to be used is preferably diluted so that the concentration of di-2-ethylhexyl phosphate is 10 to 30 vole.

摘要翻译： 本文公开了一种从低温含钴和锰的硫酸的酸性水溶液中容易且有效地除去锰的方法，得到可用作锂离子二次电池原料的高纯度硫酸钴水溶液。 高纯度硫酸钴水溶液是通过将含有钴和锰（水相）的硫酸的酸性水溶液与酸性有机萃取剂（有机相）混合，同时将硫酸的酸性水溶液的pH调节至 值在2和4之间的范围内，用pH调节剂如氢氧化钠将锰提取到有机相中。 优选使用酸性有机萃取剂稀释，使得磷酸二-2-乙基己酯的浓度为10〜30。

公开(公告)号：EP2571814B1

公开(公告)日：2014-02-26

申请号：EP11725150.4

申请日：2011-05-11

申请人： Centre National de la Recherche Scientifique

发明人： TARASCON, Jean-Marie ,  ATI, Mohamed ,  ARMAND, Michel ,  RECHAM, Nadir

IPC分类号： C01G49/00 ,  C01G49/14 ,  C01G51/00 ,  C01G51/10 ,  C01G3/00 ,  C01G53/10 ,  H01M4/58

CPC分类号： C01D15/06 ,  C01D5/00 ,  C01G49/009 ,  C01G49/14 ,  C01G51/006 ,  C01G51/10 ,  C01G53/006 ,  C01G53/10 ,  C01P2002/54 ,  C01P2002/72 ,  C01P2002/85 ,  C01P2002/88 ,  C01P2004/03 ,  C01P2006/40 ,  H01M4/5825

公开(公告)号：EP2571814A1

公开(公告)日：2013-03-27

申请号：EP11725150.4

申请日：2011-05-11

申请人： Centre National de la Recherche Scientifique

发明人： TARASCON, Jean-Marie ,  ATI, Mohamed ,  ARMAND, Michel ,  RECHAM, Nadir

IPC分类号： C01G49/00 ,  C01G49/14 ,  C01G51/00 ,  C01G51/10 ,  C01G3/00 ,  C01G53/10 ,  H01M4/58

CPC分类号： C01D15/06 ,  C01D5/00 ,  C01G49/009 ,  C01G49/14 ,  C01G51/006 ,  C01G51/10 ,  C01G53/006 ,  C01G53/10 ,  C01P2002/54 ,  C01P2002/72 ,  C01P2002/85 ,  C01P2002/88 ,  C01P2004/03 ,  C01P2006/40 ,  H01M4/5825

摘要： The invention relates to a method for preparing an alkali metal and transition metal fluorosulfate that is useful as an electrode material in an electrochemical battery that operates by alkali ion exchange. The method includes a first step that involves: preparing a mixture of precursors of elements making up fluorosulfate, placing said mixture in contact with a solid polymer at ambient temperature, subjecting the reaction medium to a heat treatment that aims to melt the polymer, and subsequently reacting the precursors with one another. Said polymer is one that is solid at ambient temperature, has a melting point lower than the reaction temperature of the precursors, is stable at least up to the reaction temperature of the precursors, and is soluble in a nonpolar aprotic organic solvent.