发明名称 |
METHOD FOR PRODUCING NICKEL POWDER HAVING LOW CARBON CONCENTRATION AND LOW SULFUR CONCENTRATION |
摘要 |
Provided is a production method for reducing the content grades of sulfur and carbon, which are impurities contaminating a nickel powder, for the purpose of improving the quality of a nickel powder produced employing a complexing reduction process. A method for producing a nickel powder having a low carbon concentration and a low sulfur concentration, said method being characterized by comprising: carrying out a complexing treatment, wherein the complexing treatment comprises adding a complexing agent to an aqueous nickel sulfate solution to produce a solution containing nickel complex ions; blowing a hydrogen gas into the solution containing nickel complex ions while maintaining the solution at a liquid temperature of 150 to 250ºC in a pressure container to achieve hydrogen reduction, thereby producing a nickel powder; washing the nickel powder with water; and roasting the washed product under a nitrogen/hydrogen mixed gas atmosphere. |
申请公布号 |
WO2015159846(A1) |
申请公布日期 |
2015.10.22 |
申请号 |
WO2015JP61358 |
申请日期 |
2015.04.13 |
申请人 |
SUMITOMO METAL MINING CO., LTD. |
发明人 |
OZAKI YOSHITOMO;HEGURI SHIN-ICHI;TAKAISHI KAZUYUKI;IKEDA OSAMU;OHARA HIDEKI;YONEYAMA TOMOAKI;KUDO YOHEI |
分类号 |
B22F9/26;C22B23/06;C22C19/03 |
主分类号 |
B22F9/26 |
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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