发明名称 |
Method for producing high-purity nickel sulfate |
摘要 |
Provided is a method for producing nickel sulfate yielding high-purity nickel sulfate using a method for removing an impurity element to selectively remove Mg from a solution containing Ni. A process for producing nickel sulfate from an acidic solution containing Ni is characterized in that a solution containing Ni is treated sequentially in steps (1) to (3): (1) a carbonation step for adding a carbonating agent to a solution containing Ni, forming the Ni contained in the Ni-containing solution into a precipitate of nickel carbonate or a mixture comprising nickel carbonate and nickel hydroxide, and producing a carbonated slurry comprising this precipitate and carbonated solution; (2) a solid-liquid separation step for separating the carbonated slurry produced in the carbonation step (1) into the precipitate and carbonated solution; and (3) a neutralization step for adding a neutralizing agent to the carbonated solution separated through the solid-liquid separation step (2), and recovering the Ni contained in the carbonated solution as a precipitate of Ni. |
申请公布号 |
AU2013238535(B2) |
申请公布日期 |
2016.06.16 |
申请号 |
AU20130238535 |
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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