发明名称 |
METHOD FOR PRODUCING HIGH-PURITY NICKEL SULFATE |
摘要 |
Provided is a method of producing high-purity nickel sulfate by an impurity-element removal method for selectively removing Mg from a Ni-containing solution. The method comprises a production process of producing nickel sulfate from a Ni-containing acid solution, the acid solution being treated in order of steps (1) to (3): (1) carbonation step, adding a carbonating agent into the Ni-containing solution to make Ni contained in the Ni-containing solution into a precipitate of nickel carbonate or a mixture of nickel carbonate and nickel hydroxide, thereby forming a slurry after carbonation including the precipitate and a solution after carbonation; (2) solid-liquid separation step, separating the slurry after carbonation formed in the carbonation step into the precipitate and the solution after carbonation; and (3) neutralization step, adding a neutralizing agent into the solution after carbonation separated through the solid-liquid separation step to recover Ni contained in the solution after carbonation as a Ni-precipitate. |
申请公布号 |
EP2832700(A4) |
申请公布日期 |
2015.12.16 |
申请号 |
EP20130769798 |
申请日期 |
2013.02.13 |
申请人 |
SUMITOMO METAL MINING CO., LTD. |
发明人 |
IDEGAMI ATSUSHI;OZAKI YOSHITOMO;HEGURI SHIN-ICHI;KUDOU KEIJI;OHARA HIDEKI;MATSUMOTO SHINYA |
分类号 |
C01G53/10;C22B3/26;C22B3/44;C22B23/00 |
主分类号 |
C01G53/10 |
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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