发明名称 |
METHOD OF EXTRACTING NICKEL FROM SPENT ACID SOLUTIONS OF CHEMICAL NICKEL PLATING |
摘要 |
extraction of metallic nickel from spent acid hypophosphite solutions of chemical nickel plating. SUBSTANCE: finely dispersed nickel powder is added as catalyst to spent solution, and stepwise treatment is then carried out with dry sodium carbonate at temperatures from 55 to 65 C and pH of 6-7. Nickel is extracted in the form of finely dispersed power containing 99.5% of nickel. In this case no additional amount of hypophosphite is required, increased extraction of nickel is attained from solution at molar ratio of sodium hypophosphite to nickel ions of 1:1. EFFECT: more efficient extraction method. 1 ex
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申请公布号 |
RU2166552(C2) |
申请公布日期 |
2001.05.10 |
申请号 |
RU19980120947 |
申请日期 |
1998.11.11 |
申请人 |
OTKRYTOE AKTSIONERNOE OBSHCHESTVO "IZHEVSKIJ RADIO;IZHEV RADIO AOOT |
发明人 |
MERKUSHEV JU.N.;MAKLETSOV V.G.;PAVLOVA L.P. |
分类号 |
C22B3/44;C22B23/00 |
主分类号 |
C22B3/44 |
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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