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公开(公告)号：EP4129506A1
公开(公告)日：2023-02-08
申请号：EP21775090.0
申请日：2021-03-11
发明人： KUDOU Keiji , ASANO Satoshi , HEGURI Shin-ichi , TAKENOUCHI Hiroshi , SHOUJI Hirofumi , MATSUOKA Itsumi , SANJO Shota , MATSUGI Takumi
摘要： The present invention provides a method for treating an alloy, wherein nickel and/or cobalt is obtained by separating copper and zinc from an alloy that contains copper, zinc, and nickel and/or cobalt. The present invention is a method for treating an alloy, by which a solution that contains nickel and/or cobalt is obtained from an alloy that contains copper, zinc, and nickel and/or cobalt, said method comprising: a leaching process wherein a leachate is obtained by subjecting the alloy to a leaching treatment by means of an acid in the coexistence of a sulfurizing agent; a reduction process wherein the leachate is subjected to a reduction treatment with use of a reducing agent; and an ion exchanging process wherein a solution that contains nickel and/or cobalt is obtained by bringing a solution, which has been obtained in the reduction process, into contact with an amino phosphoric acid-based chelate resin, thereby having zinc adsorbed on the amino phosphoric acid-based chelate resin.
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公开(公告)号：EP3730637A1
公开(公告)日：2020-10-28
申请号：EP18891691.0
申请日：2018-11-28
摘要： Provided is a method for separating copper from nickel and cobalt, which can efficiently and selectively separate copper from nickel and cobalt in a substance containing copper, nickel, and cobalt in a waste lithium ion battery, etc. In this method for separating copper from nickel and cobalt, a substance containing copper, nickel, and cobalt is sulfurated to obtain a sulfide, the obtained sulfide that contains copper, nickel, and cobalt is brought into contact with an acid solution to obtain a solid containing copper and a leachate containing nickel and cobalt. Here, the sulfide preferably contains copper sulfide as a main component, and contains nickel metal and cobalt metal. In addition, when bringing the sulfide into contact with the acid solution, the added amounts of the sulfide and the acid solution are preferably adjusted such that the oxidation-reduction potential of the obtained leachate is maintained at 150 mV or less where a silver/silver chloride electrode is a reference electrode.
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公开(公告)号：EP4411008A1
公开(公告)日：2024-08-07
申请号：EP22876026.0
申请日：2022-09-22
发明人： TAKENOUCHI Hiroshi , SHOUJI Hirofumi , MATSUOKA Itsumi , MATSUGI Takumi , SANJO Shota , ASANO Satoshi , HEGURI Shin-ichi
CPC分类号： Y02W30/84 , Y02P10/20 , H01M10/54 , C22B3/06 , C22B3/22 , C22B3/44 , C22B3/46 , C22B7/00 , C22B15/00 , C22B23/00
摘要： Provided is a method for efficiently obtaining a solution containing nickel and/or cobalt from alloys containing nickel and/or cobalt and copper, such as waste lithium-ion batteries. The present invention pertains to an alloy treatment method for obtaining a solution containing nickel and/or cobalt from alloys containing nickel and/or cobalt and copper, the method comprising: a leaching step S1 in which an acid solution is added to the alloys in the presence of a sulfurizing agent to perform a leaching treatment and obtain a leachate and a leaching residue; and a cementation step S2 in which a reducing agent and a sulfurizing agent are added to the resulting leachate to perform a copper-removal treatment for sulfurizing at least copper contained in the leachate and obtain a post-copper removal solution and a copper-removed residue, wherein the copper-removed residue obtained through the copper-removal treatment in the cementation step S2 is repeatedly subjected to the leaching step S1 and subjected to a leaching treatment together with the alloys.
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公开(公告)号：EP4129507A1
公开(公告)日：2023-02-08
申请号：EP21776054.5
申请日：2021-03-11
发明人： KUDOU Keiji , ASANO Satoshi , HEGURI Shin-ichi , TAKENOUCHI Hiroshi , SHOUJI Hirofumi , MATSUOKA Itsumi , SANJO Shota , MATSUGI Takumi
摘要： Provided is an alloy treatment method comprising separating copper and zinc from an alloy containing nickel and/or cobalt and also containing copper and zinc to obtain nickel and/or cobalt selectively. An alloy treatment method is provided, in which a solution containing nickel and/or cobalt is obtained from an alloy containing nickel and/or cobalt and also containing copper and zinc, the method comprising: a leaching step for subjecting the alloy to a leaching treatment with an acid under the condition where a sulfating agent is present to produce a leachate; a reduction step for subjecting the leachate to a reduction treatment using a reducing agent to produce a reduced solution; an oxidation/neutralization step for adding an oxidizing agent and a neutralizing agent to the reduced solution to produce a neutralized solution containing nickel and/or cobalt and also containing zinc; and a solvent extraction step for subjecting the neutralized solution to a solvent extraction procedure using an acidic phosphorus compound-based extractant to produce a solution containing nickel and/or cobalt.
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公开(公告)号：EP3690068A1
公开(公告)日：2020-08-05
申请号：EP18860201.5
申请日：2018-08-21
摘要： Provided is a method for separating copper from nickel and cobalt, which is capable of efficiently and selectively separating copper, and nickel and cobalt from an alloy containing copper, nickel and cobalt such as a highly anticorrosive alloy that is obtained by subjecting a waste lithium ion battery to a dry treatment and contains copper, nickel and cobalt. According to the present invention, an alloy containing copper, nickel and cobalt is brought into contact with an acid in the coexistence of a sulfurization agent, thereby obtaining a solid that contains copper and a leachate that contains nickel and cobalt.
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公开(公告)号：EP3702482A1
公开(公告)日：2020-09-02
申请号：EP18871166.7
申请日：2018-09-11
摘要： Provided is a method for separating copper, nickel, and cobalt, the method being capable of efficiently and selectively separating copper, nickel, and cobalt from alloys containing copper, nickel, and cobalt, such as highly corrosive alloys containing copper, nickel, and cobalt obtained by dry-processing used lithium ion batteries. The alloy containing copper, nickel, and cobalt is brought into contact with nitric acid in the co-presence of a sulfiding agent to obtain a solid containing copper and a leachate containing nickel and cobalt.
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公开(公告)号：EP3702481A1
公开(公告)日：2020-09-02
申请号：EP18870066.0
申请日：2018-09-11
摘要： Provided is a method for separating copper from nickel and cobalt with which it is possible to selectively and efficiently separate copper, as well as nickel and cobalt, from an alloy including copper, nickel, and cobalt such as an alloy having high corrosion resistance that includes copper, nickel, and cobalt obtained by dry treatment of waste lithium ion cells. An alloy including copper, nickel, and cobalt is brought into contact with sulfuric acid in the joint presence of a sulfurizing agent, and a solid containing copper and a leachate containing nickel and cobalt are obtained.
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公开(公告)号：EP4108349A1
公开(公告)日：2022-12-28
申请号：EP21756208.1
申请日：2021-02-10
发明人： TAKENOUCHI Hiroshi , ASANO Satoshi , HEGURI Shin-ichi , SHOUJI Hirofumi , KUDOU Keiji , MATSUOKA Itsumi , SANJO Shota , MATSUGI Takumi
IPC分类号： B09B3/00 , B22F1/00 , B22F9/08 , C22B1/02 , C22B5/04 , C22B7/00 , C22B15/00 , C22B19/20 , C22B23/00 , H01M10/54 , C22B3/06 , C22B3/08 , C22B3/26 , C22B3/42 , C22B3/44
摘要： Provided is a method for treating an alloy by which nickel and/or cobalt can be selectively isolated 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 a method for treating an alloy, by which a solution that contains nickel and/or cobalt is obtained from an alloy that contains copper as well as nickel and/or cobalt, the method including: a leaching step in which a leachate is obtained by subjecting an alloy to an acid-based leaching treatment under conditions in which a sulfurizing agent is also present; a reduction step in which a reduced solution is obtained by subjecting the leachate to a reduction treatment using a reducing agent; and an oxidation/neutralization step in which a solution that contains nickel and/or cobalt is obtained by adding an oxidizing agent and also a neutralizing agent to the reduced solution.
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公开(公告)号：EP3816309A1
公开(公告)日：2021-05-05
申请号：EP19825075.5
申请日：2019-06-21
摘要： Provided is a method for efficiently separating copper from nickel and cobalt from a sulfide containing nickel and cobalt together with copper. The present invention is a method for separating copper from nickel and cobalt, the method comprising pulverizing a sulfide containing copper and nickel and cobalt into a predetermined size and then stirring the resultant product under the condition having an oxidation-reduction potential (a reference electrode: a silver/silver chloride electrode) of less than 100 mV using an acid solution to perform a leaching treatment. In this separation method, a leach liquor in which nickel and cobalt are leached and a leach residue containing copper sulfate are produced as the result of the leaching treatment.
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公开(公告)号：EP3715484A1
公开(公告)日：2020-09-30
申请号：EP18880919.8
申请日：2018-10-22
摘要： Provided is a treatment method whereby it becomes possible to recovery copper, nickel and cobalt, which are valuable metals, contained in a lithium ion battery waste and to separate copper, nickel and cobalt from one another effectively. A method for treating a lithium ion battery waste according to the present invention includes: an alloy production step S1 of introducing the lithium ion battery waste into a furnace and then melting the lithium ion battery waste by heating, thereby producing an alloy containing copper, nickel and cobalt; and an electrolytic purification step S2 of subjecting the alloy to such an electrolytic treatment that the alloy is charged as an anode into a sulfuric acid solution and then electricity is conducted between the anode and a cathode to electrodeposit copper contained in the alloy onto the cathode, thereby separating nickel and cobalt from each other.
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