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公开(公告)号：EP4397778A1
公开(公告)日：2024-07-10
申请号：EP22864605.5
申请日：2022-08-31
发明人： SHOUJI, Hirofumi , TAKENOUCHI, Hiroshi , MATSUOKA, Itsumi , SANJO, Shota , MATSUGI, Takumi , HEGURI, Shin-ichi , ASANO, Satoshi
摘要： Provided is a method for effectively obtaining a solution containing nickel and/or cobalt from an alloy that contains copper as well as nickel and/or cobalt, in a waste lithium-ion battery or the like. The present invention is an alloy processing method for obtaining a solution containing nickel and/or cobalt from an alloy that contains copper as well as nickel and/or cobalt, said method including a leaching step for carrying out an acid solution leaching treatment on an alloy-containing slurry in the presence of a sulfurising agent to obtain a leachate and a leaching residue. In the leaching step, the leaching treatment is carried out with the initial concentration of the alloy-containing slurry adjusted to between 100 g/L and 250 g/L. Moreover, in the leaching step, the leaching treatment is preferably carried out while controlling the redox potential (using a silver/silver chloride electrode as a reference electrode) to 200 mV or less. Furthermore, in the leaching step, the leaching treatment is preferably carried out in the presence of the sulfurising agent in an amount in the range of 1.05 to 1.25 equivalent weight (S-mol/Cu-mol) in relation to the amount of copper contained in the alloy.
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公开(公告)号：EP4375386A1
公开(公告)日：2024-05-29
申请号：EP22845851.9
申请日：2022-07-14
发明人： SHOUJI, Hirofumi , TAKENOUCHI, Hiroshi , MATSUOKA, Itsumi , SANJO, Shota , MATSUGI, Takumi , ASANO, Satoshi , HEGURI, Shin-ichi
摘要： Provided is a method for obtaining a solution having a high concentration of nickel and/or cobalt from an alloy that contains copper as well as nickel and/or cobalt, in a waste lithium-ion battery or the like. A method for treating an alloy according to the present invention comprises: a leaching step S1 for subjecting an alloy that contains copper as well as nickel and/or cobalt to a leaching treatment by using an acid solution in the presence of a sulfiding agent to obtain a leachate and a leaching residue; and a reduction step S2 for adding a reducing agent to a part of the obtained leachate and performing a reduction treatment to obtain a post-reduction solution and a reduction residue, wherein in the leaching step S1, the leachate that has not been provided in the reduction treatment in the reduction step S2, is repeatedly used as part or all of the acid solution added in the leaching treatment.
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公开(公告)号：EP4400615A1
公开(公告)日：2024-07-17
申请号：EP22867198.8
申请日：2022-08-24
发明人： SHOUJI, Hirofumi , TAKENOUCHI, Hiroshi , MATSUOKA, Itsumi , SANJO, Shota , MATSUGI, Takumi , ASANO, Satoshi , HEGURI, Shin-ichi
摘要： A method is provided which enables selectively leaching nickel and/or cobalt from an alloy that contains copper and nickel and/or cobalt in a waste lithium ion battery.
This alloy processing method involves obtaining a solution that contains nickel and/or cobalt from an alloy that contains copper and nickel and/or cobalt, wherein the alloy processing method involves a leaching step for adding an acid solution to the alloy in a state in which a sulfurizing agent is also present, and obtaining a leachate and a leaching residue by performing leaching processing while controlling the redox potential (the reference electrode being a silver / silver chloride electrode) to at least 100mV and less than 250mV. In the leaching processing in the leaching step, an operation is performed that temporarily decreases the redox potential to less than or equal to -100mV.-
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
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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
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公开(公告)号：EP3208352A1
公开(公告)日：2017-08-23
申请号：EP15863799.1
申请日：2015-11-25
发明人： MATSUOKA, Itsumi , NAGAI, Hidemasa , KUDO, Keiji , MATSUMOTO, Shin-ya , HIGAKI, Tatsuya , OZAKI, Yoshitomo , SHOUJI, Hirofumi , KOBAYASHI, Hiroshi
CPC分类号： C22B59/00 , C01F17/00 , C01F17/0043 , C01P2006/80 , C07C51/412 , C22B1/02 , C22B3/001 , C22B3/08 , C22B3/42 , C22B3/44 , Y02P10/234 , C07C55/07
摘要： Provided is a method for recovering scandium, with which it is possible to easily and efficiently recover high-purity scandium from nickel oxide ores. This method for recovering scandium involves passing a solution containing scandium through an ion exchange resin, then subjecting the eluant eluted from the ion exchange resin to solvent extraction and separating the extraction residual liquid and the extraction agent after extraction, then performing an oxalation process on the extraction residual liquid to obtain a scandium oxalate precipitate, and roasting the precipitate to obtain scandium oxide, wherein the method is characterized in that an amine-based extraction agent is used as the extraction agent for solvent extraction.
摘要翻译： 提供了一种回收钪的方法，利用该方法可以容易且有效地从氧化镍矿石中回收高纯度钪。 这种回收钪的方法包括使含钪的溶液通过离子交换树脂，然后使从离子交换树脂洗脱出的洗脱液进行溶剂提取，并在提取后分离提取残余液体和提取剂，然后对其进行氧化处理 萃取残留液得到草酸钪沉淀物，焙烧沉淀物得到氧化钪，其特征在于使用胺类萃取剂作为溶剂萃取萃取剂。
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公开(公告)号：EP4446444A1
公开(公告)日：2024-10-16
申请号：EP22904141.3
申请日：2022-12-01
发明人： TAKENOUCHI, Hiroshi , SHOUJI, Hirofumi , MATSUOKA, Itsumi , SANJO, Shota , MATSUGI, Takumi , ASANO, Satoshi , HEGURI, Shin-ichi
摘要： The present invention provides a method for efficiently obtaining a solution that contains nickel and/or cobalt from lithium ion battery waste or the like, which is an alloy that contains nickel and/or cobalt and copper. The present invention is a treatment method for an alloy, the method being used for the purpose of obtaining a solution that contains nickel and/or cobalt from an alloy that contains nickel and/or cobalt and copper. This treatment method for an alloy comprises a leaching step in which the alloy is subjected to a leaching treatment by adding an acid solution to the alloy in the coexistence of a sulfurizing agent, thereby obtaining a leachate and a leaching residue; and in the leaching step, the leaching treatment is carried out while maintaining the copper concentration in the reaction solution within the range of 0.5 g/L to 15 g/L by adding a divalent copper ion source thereto. Moreover, in the leaching step, the leaching treatment is carried out while maintaining the redox potential of the reaction solution at 50 mV or more, using a silver/silver chloride electrode as a reference electrode.
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公开(公告)号：EP4375385A1
公开(公告)日：2024-05-29
申请号：EP22845846.9
申请日：2022-07-14
发明人： TAKENOUCHI, Hiroshi , HEGURI, Shin-ichi , ASANO, Satoshi , SHOUJI, Hirofumi , MATSUOKA, Itsumi , SANJO, Shota , MATSUGI, Takumi
摘要： The present invention provides a method that is capable of selectively obtaining nickel and/or cobalt from an alloy, which contains copper as well as nickel and/or cobalt, in a waste lithium ion battery or the like. A method for processing an alloy according to the present invention comprises: a leaching step S1 in which an alloy that contains copper as well as nickel and/or cobalt is subjected to a leaching treatment by means of an acid solution in the coexistence of a sulfurizing agent, thereby obtaining a leachate and a leaching residue; and a reduction step S2 in which a reducing agent is added to the thus-obtained leachate so as to reduce the leachate, thereby obtaining a post-reduction solution and a reduction residue. This method for processing an alloy is characterized in that the reduction is carried out in the reduction step S2, while controlling the addition amount of the reducing agent so that the redox potential of the leachate is 0 mV or less as determined where a silver/silver chloride electrode is the reference electrode.
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公开(公告)号：EP4197662A1
公开(公告)日：2023-06-21
申请号：EP21858186.6
申请日：2021-08-05
IPC分类号： B09B3/00 , C22B7/00 , C22B23/00 , H01M10/54 , C22B3/06 , C22B3/08 , C22B3/10 , C22B3/44 , C22B3/46
摘要： Provided is a method for treating a sulfide, the method being suitable for obtaining nickel and/or cobalt from a sulfide containing copper and nickel and/or cobalt. The method relates to a method for treating a sulfide containing copper and nickel and/or cobalt, the method including pulverizing the sulfide by subjecting the sulfide to a pulverizing treatment so as to obtain a pulverized sulfide having a particle size of 800 um or less; and leaching the pulverized sulfide by subjecting the pulverized sulfide to a leaching treatment with an acid under a condition in which a sulfurizing agent is present to obtain a leachate. For example, the sulfide to be treated is generated by reducing, heating, and melting a waste lithium-ion battery to obtain a molten body and adding a sulfurizing agent to the molten body to sulfurize the molten body.
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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。
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