发明名称 |
METHOD FOR REMOVING COPPER ION IN NICKEL CHLORIDE AQUEOUS SOLUTION AND METHOD FOR PRODUCING ELECTROLYTIC NICKEL |
摘要 |
<P>PROBLEM TO BE SOLVED: To provide: a method for immobilizing and removing copper ions from a copper ion-containing nickel chloride aqueous solution, capable of reducing copper concentration in a nickel chloride aqueous solution down to a low concentration region, and further capable of suppressing generated sulfide from being made fine to improve filterability of the sulfide; and a method for producing electrolytic nickel in which the copper ion removal method is applied. <P>SOLUTION: The method for removing copper ions in a nickel chloride aqueous solution includes: a reduction step S21 of adding nickel sulfide into a copper ion-containing nickel chloride aqueous solution to reduce copper ions; and a copper ion immobilization step S22 of supplying hydrogen sulfide to a slurry obtained through the reduction step S21 to immobilize the reduced copper ions as copper sulfide; and a solid-liquid separation step S23 of performing solid-liquid separation on the slurry obtained through the copper ion immobilization step S22. <P>COPYRIGHT: (C)2013,JPO&INPIT |
申请公布号 |
JP2013067841(A) |
申请公布日期 |
2013.04.18 |
申请号 |
JP20110207758 |
申请日期 |
2011.09.22 |
申请人 |
SUMITOMO METAL MINING CO LTD |
发明人 |
FUKUIE TOMONAO;SHINGU MASAHIRO;KOBAYASHI CHU;TAKAISHI KAZUYUKI;MATSUMOTO NOBUHIRO |
分类号 |
C25C1/08;C22B3/04;C22B23/00;C25C7/06 |
主分类号 |
C25C1/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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