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公开(公告)号：EP4116447A1
公开(公告)日：2023-01-11
申请号：EP22777584.8
申请日：2022-03-30
发明人： IKEDA, Osamu , TAKANO, Masatoshi , ASANO, Satoshi , HEGURI, Shin-ichi , MATSUMOTO, Shin-ya , KUDO, Yohei , SENBA, Yusuke , MAEDA, Kyohei
摘要： Provided is a method for producing a lithium-containing solution that allows increasing a content rate of lithium in a solution after an eluting step, and suppressing an amount of an eluted solution used in a process after the eluting step, thus suppressing production cost of lithium.
A method for producing a lithium-containing solution includes an adsorption step of bringing a lithium adsorbent obtained from lithium manganese oxide in contact with a low lithium-containing solution to obtain post-adsorption lithium manganese oxide, an eluting step of bringing the post-adsorption lithium manganese oxide in contact with an acid-containing solution to obtain an eluted solution, and a manganese oxidation step of oxidating manganese to obtain a lithium-containing solution with a suppressed manganese concentration. The adsorption step, the eluting step, and the manganese oxidation step are performed in this order, and the acid-containing solution includes the eluted solution with acid added. The method allows the usage amount of the acid in the eluting step to be suppressed, the content rate of lithium in the eluted solution after the eluting step to be increased, and thus the production cost of the lithium-containing solution to be suppressed.-
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
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.
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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
发明人： MATSUMOTO, Shin-ya , TAKANO, Masatoshi , HEGURI, Shin-ichi , ASANO, Satoshi , IKEDA, Osamu , KUDO, Yohei
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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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
发明人： HEGURI, Shin-ichi , OZAKI, Yoshitomo , TAKAISHI, Kazuyuki , YONEYAMA, Tomoaki , OHARA, Hideki , IKEDA, Osamu , KUDO, Yohei
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。
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