-
公开(公告)号：EP2781609A1
公开(公告)日：2014-09-24
申请号：EP12850545.0
申请日：2012-11-01
发明人： MAEBA, Kazunari , KAWAKAMI, Yukie , KUDO, Keiji , TAKANO, Masatoshi , ISHIDA Hitoshi , ASANO, Satoshi , TANAKA, Masahiro
CPC分类号： C22B59/00 , C22B3/44 , C22B7/007 , Y02P10/234
摘要： The object of the present invention is to provide a method for recovering a rare earth element, which is capable of efficiently recovering a rare earth element with high recovery rate without using any expensive chemicals, solvents or the like. In the present invention, a water-soluble salt other than sulfate ions is allowed to coexist with an aqueous solution that contains a rare earth element, and then an alkali metal sulfate is added to the aqueous solution, thereby producing a precipitate of a double sulfate of the rare earth element.
摘要翻译： 本发明的目的是提供一种稀土元素的回收方法，该方法能够在不使用任何昂贵的化学品，溶剂等的情况下以高回收率有效地回收稀土元素。 在本发明中，使硫酸根离子以外的水溶性盐与含有稀土元素的水溶液共存，然后向该水溶液中加入碱金属硫酸盐，由此产生双硫酸盐沉淀 的稀土元素。
-
公开(公告)号：EP3421627A1
公开(公告)日：2019-01-02
申请号：EP17756472.1
申请日：2017-02-21
发明人： NAGAI, Hidemasa , KUDO, Keiji , MATSUOKA, Itsumi , OZAKI, Yoshitomo , SHOJI, Hirofumi , MATSUMOTO, Shin-ya , HIGAKI, Tatsuya
摘要： Provided is a method for recovering scandium, by which high-quality scandium is able to be efficiently recovered from nickel oxide ore. The present invention comprises: a leaching step S1 for obtaining a leachate by leaching a nickel oxide ore containing scandium with use of sulfuric acid; a neutralization step S2 for neutralizing the leachate by adding a neutralizing agent thereto; a sulfurization step S3 for obtaining a post-sulfurization solution by adding a sulfurizing agent to the post-neutralization solution; an ion exchange step S4 for obtaining a scandium eluent by bringing the post-sulfurization solution into contact with a chelating resin, thereby having scandium adsorbed on the chelating resin; a dissolution step S5 for obtaining a scandium acid dissolution liquid by obtaining a precipitate of scandium hydroxide by adding an alkali into the scandium eluent, and subsequently adding an acid solution to the scandium hydroxide; a solvent extraction step S6 for performing solvent extraction of the scandium acid dissolution liquid by bringing the scandium acid dissolution liquid into contact with a neutral extractant; and a scandium recovery step S7 for obtaining scandium oxide by producing a salt of scandium oxalate by adding oxalic acid to the extraction residue and subsequently roasting the salt of scandium oxalate.
-
公开(公告)号：EP3093354A1
公开(公告)日：2016-11-16
申请号：EP15742736.0
申请日：2015-01-21
发明人： HIGAKI, Tatsuya , OZAKI, Yoshitomo , MATSUMOTO, Shin-ya , MATSUOKA, Itsumi , NAGAI, Hidemasa , NAGAKURA, Toshihiko , KUDO, Keiji
CPC分类号： C22B59/00 , C22B3/0005 , C22B3/08 , C22B3/42 , C22B3/44 , C22B21/0015 , C22B34/32 , Y02P10/234
摘要： In order to recover high-quality scandium from nickel oxide ores efficiently, this method comprises: a leaching step (S1) for feeding Ni oxide ores and sulfuric acid into a pressure vessel, and subjecting the mixture to solid-liquid separation to form a leachate and a leach residue; a neutralization step (S2) for adding a neutralizing agent to the leachate, and thus forming a neutralization sediment and a post-neutralization fluid; a sulfurization step (S3) for adding a sulfurizing agent to the post-neutralization fluid, and separating the obtained mixture into Ni sulfide and a post-sulfurization fluid; an ion-exchange step (S4) for bringing the post-sulfurization fluid into contact with a chelating resin, making Sc adsorbed on the chelating resin, and forming an Sc eluent; a solvent extraction step (S6) for bringing the Sc eluent into contact with an extracting agent, adding a back-extraction agent to the extract, and thus forming back-extracted matter; and a roasting step (S8) for roasting the back-extracted matter, and thus forming Sc oxide. It is preferable that the method further includes, after the ion exchange step (S4), a concentration step (S5) for forming a sediment from the Sc eluent and dissolving the sediment in an acid, and includes, after the solvent extraction step (S6), an Sc precipitation step (S7) for dissolving the back-extracted matter in hydrochloric acid, adding oxalic acid to the obtained solution, and thus forming Sc oxalate crystals.
-
4.发明授权
公开(公告)号：EP2669390B1
公开(公告)日：2018-09-26
申请号：EP12739669.5
申请日：2012-01-27
发明人： ISHIDA, Hitoshi , KAWAKAMI, Yukie , KUDO, Keiji , ASANO, Satoshi
CPC分类号： C22B7/006 , C22B7/007 , C22B23/0415 , C22B26/12 , H01M4/525 , H01M10/0525 , H01M10/54 , Y02P10/234 , Y02W30/84
摘要： The present invention provides a valuable metal leaching method and a valuable metal collection method, in each of which valuable metals can be leached efficiently, the amount of a reducing agent used can be reduced, and cost reduction can be achieved. In the present invention, a positive electrode material is immersed in an acidic solution together with a metal having a lower reduction potential than a reduction potential of hydrogen, whereby valuable metals are leached out from a positive-electrode active substance.
-
5.发明公开METHOD FOR SEPARATING POSITIVE-POLE ACTIVE SUBSTANCE AND METHOD FOR RECOVERING VALUABLE METALS FROM LITHIUM ION BATTERY 有权处理对正活性物质的贵金属，从锂离子电池回收分离和方法
公开(公告)号：EP2653573A1
公开(公告)日：2013-10-23
申请号：EP11848381.7
申请日：2011-12-14
发明人： KUDO, Keiji , ISHIDA, Hitoshi , ASANO, Satoshi , KAWAKAMI, Yukie
CPC分类号： C22B7/008 , C22B1/005 , C22B7/006 , C22B23/0461 , C22B26/12 , H01M10/0525 , Y02E60/122 , Y02P10/234 , Y02W30/84
摘要： The present invention aims at improving a recovery rate of a positive-pole active substance and preventing a recovery loss of valuable metals when a positive-pole active substance is separated from a lithium ion battery. In the present invention, a material resulting from battery dismantling obtained by dismantling a lithium ion battery is stirred using a surfactant solution, whereby a positive-pole active substance is separated from a positive-electrode substrate. Also, it is preferable that an alkaline solution is added to a positive-electrode material of a material resulting from battery dismantling, thereby dissolving a positive-electrode substrate to which a positive-pole active substance adheres to obtain a slurry containing the positive-pole active substance, and a surfactant solution is added to the slurry to disperse the positive-pole active substance in the slurry, whereby the positive-pole active substance is separated from the alkaline solution.
摘要翻译： 本发明的目的在于提高一个正极活性物质的回收率和防止有价值金属的回收损失当正极活性物质是由锂离子电池分离。 在本发明中，从电池产生的物质拆解通过拆卸的锂离子电池中，使用表面活性剂溶液，由此正极活性物质从正极基板分离搅拌得到。 因此，它是优选的做碱性溶液的正极被加到从电池解体，从而溶解于其中正极活性物质粘附以获得含有浆料的正极基板的材料制成的正极材料 活性物质和表面活性剂溶液加入到淤浆中以分散正极活性物质浆料中，由此，正极活性物质从碱性溶液中分离出来。
-
公开(公告)号：EP3093354B1
公开(公告)日：2019-08-28
申请号：EP15742736.0
申请日：2015-01-21
-
公开(公告)号：EP3252177A1
公开(公告)日：2017-12-06
申请号：EP15883377.2
申请日：2015-12-08
CPC分类号： C22B1/00 , C22B3/08 , C22B23/005 , C22B23/043 , Y02P10/212
摘要： A wet smelting method for nickel oxide ores from which nickel, c obalt, etc. are recovered is provided with which it is possible to reduce the consumption of an acid in leaching, such as sulfur ic acid, and to recover valuable metals such as nickel and cobal t at a high efficiency. The method according to the present inv ention comprises: step (A) in which nickel oxide ores as a raw m aterial are separated into a limonite-type ore having a low magn esium content and a saprolite-type ore having a high magnesium c ontent; step (B) in which the saprolite-type ore is subjected to normal-pressure leaching under given standardized leaching cond itions using the pressure leachate obtained by pressure leaching in step (C); and step (C) in which the limonite-type ore obtain ed in step (A) is mixed with the normal-pressure leaching residu e obtained in step (B) and the mixture is reacted with sulfuric acid in an acidic atmosphere having a high temperature and a hig h pressure, thereby conducting pressure leaching.
摘要翻译： 提供一种回收镍，三氧化二钴等的氧化镍矿石的湿法冶炼方法，可以减少硫酸等浸出时酸的消耗量，回收镍等有价金属 以及高效率的钴t。 根据本发明的方法包括：步骤（A），其中将氧化镍矿石作为原材料分离成具有低含量铈含量的褐铁矿型矿石和具有高镁含量的腐泥土型矿石 ; 步骤（B），其中腐殖土型矿石在步骤（C）中使用通过压力浸出获得的压力渗沥液在给定的标准化浸出条件下进行常压浸出; 和工序（C），将工序（A）中得到的褐铁矿型矿石与工序（B）中得到的常压浸出残渣混合，使该混合物与硫酸在高浓度的酸性气氛 温度和较高的压力，从而进行压力浸出。
-
8.发明公开VALUABLE METAL LEACHING METHOD, AND VALUABLE METAL COLLECTION METHOD EMPLOYING THE LEACHING METHOD 审中-公开PRECIOUS沥及贵金属收集过程，包括浸工艺
公开(公告)号：EP2669390A1
公开(公告)日：2013-12-04
申请号：EP12739669.5
申请日：2012-01-27
发明人： ISHIDA, Hitoshi , KAWAKAMI, Yukie , KUDO, Keiji , ASANO, Satoshi
CPC分类号： C22B7/006 , C22B7/007 , C22B23/0415 , C22B26/12 , H01M4/525 , H01M10/0525 , H01M10/54 , Y02P10/234 , Y02W30/84
摘要： The present invention provides a valuable metal leaching method and a valuable metal collection method, in each of which valuable metals can be leached efficiently, the amount of a reducing agent used can be reduced, and cost reduction can be achieved. In the present invention, a positive electrode material is immersed in an acidic solution together with a metal having a lower reduction potential than a reduction potential of hydrogen, whereby valuable metals are leached out from a positive-electrode active substance.
-
公开(公告)号：EP3208352B1
公开(公告)日：2019-07-24
申请号：EP15863799.1
申请日：2015-11-25
-
公开(公告)号：EP3252177B1
公开(公告)日：2019-03-27
申请号：EP15883377.2
申请日：2015-12-08
-
-
-
-
-
-
-
-
-
搜索结果
14 条记录 (耗时 0.013 秒)
