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1. 发明公开

EP4414065A1 METHOD FOR MANUFACTURING GRANULATED BODIES FOR LITHIUM ADSORPTION 审中-实审
公开(公告)号：EP4414065A1
公开(公告)日：2024-08-14
申请号：EP22907431.5
申请日：2022-12-13
申请人： SUMITOMO METAL MINING CO., LTD.
发明人： IKEDA, Osamu , ASANO, Satoshi , TAKANO, Masatoshi , MATSUMOTO, Shin-ya , KUDO, Yohei , HEGURI, Shin-ichi
IPC分类号： B01J20/30
CPC分类号： B01J20/30
摘要： To provide a method for producing granulated body for lithium adsorption that easily maintain their shapes with a high adsorption capability and more robust granulated body. The method for producing the granulated body for lithium adsorption includes a kneading step of kneading a powder of a lithium adsorbent precursor, an organic binder, and a hardening agent for accelerating hardening of the organic binder to obtain a kneaded material, a granulating step of granulating the kneaded material to obtain granulated body, and a baking step of baking the granulated body at 90°C or more and 120°C or less to obtain granulated body for lithium adsorption. This aspect allows obtaining the granulated body for lithium adsorption that easily maintain their shapes with a high adsorption capability and more robust granulated body.

2. 发明公开

EP3357609A1 METHOD FOR MANUFACTURING NICKEL POWDER, AND METHOD FOR OPERATING REACTION FACILITY 审中-公开
公开(公告)号：EP3357609A1
公开(公告)日：2018-08-08
申请号：EP16850803.4
申请日：2016-07-11
申请人： Sumitomo Metal Mining Co., Ltd.
发明人： DOI, Yasuo , TAKAISHI, Kazuyuki , YAMAGUMA, Ryoma , OZAKI,Yoshitomo , HEGURI, Shin-ichi
IPC分类号： B22F9/24 , C22B3/44 , C22B23/00
CPC分类号： B22F9/24 , B22F2301/15 , C22B3/06 , C22B3/44 , C22B23/00 , C22B23/0415 , Y02P10/234
摘要： Provided is a method for manufacturing nickel powder whereby a reduction in production efficiency due to abrasion of a flash vessel connected to a pressurized container can be suppressed when nickel powder is generated using the pressurized container and subsequently recovered. The method for manufacturing nickel powder pertaining to the present invention comprises charging a pressurized container with a nickel sulfate ammine complex solution and seed crystals, adding hydrogen gas to the pressurized container, and reducing the nickel included in the nickel sulfate ammine complex solution, wherein, when a nickel powder slurry obtained in the pressurized container is extracted to a flash vessel connected to the pressurized container, the slurry is extracted to the flash vessel while the supply rate of the nickel ammine complex solution to the pressurized container and/or the extraction rate of the nickel slurry from the pressurized container is controlled so that the liquid level in the pressurized container is in a fixed range.

3. 发明公开

EP4400615A1 METHOD FOR PROCESSING ALLOY 审中-实审
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
申请人： SUMITOMO METAL MINING CO., LTD.
发明人： SHOUJI, Hirofumi , TAKENOUCHI, Hiroshi , MATSUOKA, Itsumi , SANJO, Shota , MATSUGI, Takumi , ASANO, Satoshi , HEGURI, Shin-ichi
IPC分类号： C22B3/06 , C22B3/44 , C22B7/00 , C22B15/00 , C22B23/00
CPC分类号： Y02P10/20 , Y02W30/84 , C22B7/00 , C22B3/44 , C22B23/00 , C22B15/00 , C22B3/06
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.

4. 发明公开

EP3466571A1 METHOD FOR PRODUCING NICKEL POWDER 审中-公开
公开(公告)号：EP3466571A1
公开(公告)日：2019-04-10
申请号：EP17806663.5
申请日：2017-05-30
申请人： Sumitomo Metal Mining Co., Ltd.
发明人： TAKAISHI, Kazuyuki , HEGURI, Shin-ichi , YAMAGUMA, Ryo-ma , OZAKI, Yoshitomo , DOI, Yasuo
IPC分类号： B22F9/26
摘要： Provided is a method whereby it is possible to prevent equipment wear due to abrasion or impact between the equipment and nickel powder occurring during discharge thereof from a pressurized container, and nickel powder can be stably produced. In the present invention, a nickel sulfate amine complex liquid and nickel powder having a particle diameter of 0.1 µm to 300 µm are supplied to a reaction container, hydrogen gas is continuously supplied while the inside of the reaction container is maintained at a temperature in the range of 150°C to 250°C, and the pressure of a gas phase part is set to 2.5 MPa to 3.5 MPa, whereby nickel ions in the nickel sulfate amine complex liquid are reduced to nickel and deposited on the surfaces of the nickel powder supplied to the reaction container, a reacted slurry including the nickel sulfate amine complex liquid and the nickel powder is then transferred to a pressurized storage container at the same or slightly lower pressure than the internal pressure of the reaction container, and the pressure of the pressurized storage container to which the reacted slurry is transferred is then reduced, after which the reacted slurry is extracted from the pressurized storage container.

5. 发明公开

EP4375386A1 METHOD FOR TREATING ALLOY 审中-实审
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
申请人： SUMITOMO METAL MINING CO., LTD.
发明人： SHOUJI, Hirofumi , TAKENOUCHI, Hiroshi , MATSUOKA, Itsumi , SANJO, Shota , MATSUGI, Takumi , ASANO, Satoshi , HEGURI, Shin-ichi
IPC分类号： C22B3/04 , C22B3/44 , C22B7/00 , C22B15/00 , C22B23/00
CPC分类号： Y02P10/20 , Y02W30/84 , C22B7/00 , C22B3/44 , C22B23/00 , C22B15/00 , C22B3/04
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.

6. 发明公开

EP3473362A1 NICKEL POWDER PRODUCTION METHOD AND NICKEL POWDER PRODUCTION DEVICE 审中-公开
公开(公告)号：EP3473362A1
公开(公告)日：2019-04-24
申请号：EP17815256.7
申请日：2017-06-14
申请人： Sumitomo Metal Mining Co., Ltd.
发明人： TAKAISHI, Kazuyuki , OZAKI, Yoshitomo , HEGURI, Shin-ichi
IPC分类号： B22F9/26
摘要： Provided is a method with which it is possible to prevent equipment, such as piping and valves, used to discharge and recover a nickel powder-containing slurry from a high pressure reaction tank from being damaged and trapping the nickel powder therein and to enable continuous operation, thereby improving the productivity. This nickel powder production method comprises a step of reacting a nickel sulfate-ammine complex solution with hydrogen gas under high pressure in a reaction tank, thereby obtaining a nickel powder slurry containing nickel powder. The method is characterized in that the nickel powder slurry is discharged and transferred through discharge piping from the reaction tank in which the nickel powder-containing slurry has been produced, and then a washing solution is supplied to the discharge piping at a predetermined pressure to wash the discharge piping.

7. 发明公开

EP3248720A1 METHOD FOR PRODUCING NICKEL POWDER 审中-公开
标题翻译：生产镍粉的方法
公开(公告)号：EP3248720A1
公开(公告)日：2017-11-29
申请号：EP15878829.9
申请日：2015-03-26
申请人： Sumitomo Metal Mining Co., Ltd.
发明人： HEGURI, Shin-ichi , OZAKI, Yoshitomo , TAKAISHI, Kazuyuki , YONEYAMA, Tomoaki , OHARA, Hideki , IKEDA, Osamu , KUDO, Yohei
IPC分类号： B22F9/26 , B22F3/10 , B22F9/24
CPC分类号： B22F9/26 , B22F2301/15
摘要： Provided is a method for producing nickel powder, in which fine nickel powder used as seed crystals required for producing nickel powder is produced from a solution containing a nickel ammine sulfate complex depending on the amount required for producing the nickel powder. The method for producing nickel powder sequentially includes: a mixing step of adding, to a nickel ammine sulfate complex solution, an insoluble solid as seed crystals and a polyacrylate or lignosulfonate as a dispersant to form a mixed slurry; and a reduction and precipitation step of charging a reaction vessel with the mixed slurry and blowing hydrogen gas into the mixed slurry in the reaction vessel to reduce nickel complex ions in the mixed slurry to form nickel precipitate on the surface of the insoluble solid, wherein the amount of the dispersant added in the mixing step is controlled to control the number of the nickel powder obtained by formation of the nickel precipitate in the reduction and precipitation step.
摘要翻译：本发明提供一种镍粉的制造方法，其中，根据制造镍粉所需的量，由含有硫酸镍铵络合物的溶液制造作为制造镍粉所需的晶种的微细的镍粉。镍粉的制造方法依次包括：混合工序，向硫酸镍铵络合物溶液中添加作为晶种的不溶性固体和作为分散剂的聚丙烯酸酯或木质素磺酸盐，形成混合浆料; 以及将混合浆料装入反应容器中并将氢气吹入反应容器中的混合浆料以还原混合浆料中的镍配合物离子以在不溶性固体表面上形成镍沉淀物的还原和沉淀步骤，其中控制在混合步骤中添加的分散剂的量以控制在还原和沉淀步骤中通过形成镍沉淀物获得的镍粉的数量。

8. 发明公开

EP4397778A1 ALLOY PROCESSING METHOD 审中-实审
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
申请人： SUMITOMO METAL MINING CO., LTD.
发明人： SHOUJI, Hirofumi , TAKENOUCHI, Hiroshi , MATSUOKA, Itsumi , SANJO, Shota , MATSUGI, Takumi , HEGURI, Shin-ichi , ASANO, Satoshi
IPC分类号： C22B23/00 , C22B3/06 , C22B3/44 , C22B7/00
CPC分类号： Y02P10/20 , C22B7/00 , C22B3/44 , C22B23/00 , C22B3/06 , Y02W30/84
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.

9. 发明公开

EP4163257A1 METHOD FOR PRODUCING COBALT SULFATE 审中-实审
公开(公告)号：EP4163257A1
公开(公告)日：2023-04-12
申请号：EP22782443.0
申请日：2022-01-20
申请人： Sumitomo Metal Mining Co., Ltd.
发明人： OHARA, Hideki , KUDOU, Keiji , HIGAKI, Tatsuya , WATANABE, Hiroto , KONDOU, Natsuki , KANEKO, Takashi , HEGURI, Shin-ichi
IPC分类号： C01G51/10 , C22B23/00 , C22B3/08 , C22B3/38 , C22B3/44
摘要： Provided is a method for separating impurities and cobalt without using an electrolysis process from a cobalt chloride solution containing impurities and producing a high purity cobalt sulfate. The production method for cobalt sulfate includes: a copper removal step (S1) of adding a sulfurizing agent to a cobalt chloride solution containing one or more impurities of copper, zinc, manganese, calcium, and magnesium and generating a precipitate of sulfide of copper to separate to remove copper; a neutralization step (S2) of adding a neutralizer or a carbonation agent to a cobalt chloride solution having undergone through the copper removal step (S1) and generating cobalt hydroxide or basic cobalt carbonate to separate magnesium; a leaching step (S3) of adding sulfuric acid to the cobalt hydroxide or the basic cobalt carbonate to obtain cobalt sulfate solution; and a solvent extraction step (S4) of bringing an organic solvent containing an alkyl phosphoric acid-based extractant to the cobalt sulfate solution and extracting zinc, manganese, and calcium into the organic solvent to separate to remove zinc, manganese, and calcium. These steps are sequentially executed.

10. 发明公开

EP4108633A1 LITHIUM HYDROXIDE PRODUCTION METHOD 审中-实审
公开(公告)号：EP4108633A1
公开(公告)日：2022-12-28
申请号：EP21756744.5
申请日：2021-01-08
申请人： SUMITOMO METAL MINING CO., LTD.
发明人： MATSUMOTO, Shin-ya , TAKANO, Masatoshi , HEGURI, Shin-ichi , ASANO, Satoshi , IKEDA, Osamu , KUDO, Yohei
IPC分类号： C01D15/02 , B01D61/42 , C01D15/04 , C25B1/16 , H01M4/505
摘要： A method for producing lithium hydroxide that allows reducing a load of removing divalent or more ions with an ion-exchange resin is provided. The method for producing lithium hydroxide includes steps (1) to (3) below. (1) a neutralization step: a step of adding an alkali to a first lithium chloride containing liquid to obtain a post-neutralization liquid, (2) an ion-exchange step: a step of bringing the post-neutralization liquid into contact with an ion-exchange resin to obtain a second lithium chloride containing liquid, and (3) a conversion step: a step of electrodialyzing the second lithium chloride containing liquid to obtain a lithium hydroxide containing liquid. Since this producing method allows roughly removing divalent or more ions in the neutralization step, a load of metal removal with the ion-exchange resin is reducible.

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