根据镍基合金电解加工渣泥的组成和热力学分析， 用水洗—浸出—水解沉淀工艺处理这种渣泥。 试验结果表明： 氯化钠、 硝酸钠和部分铬盐等可溶性化合物可以从渣泥中洗出； 继而的硫酸浸出过程中， 可将洗后渣泥中的镍、 钴和铬浸出， 而钨和钼留在浸出渣中。 在浸出过程中， 镍和钴的浸出率达98%。 浸出液中的铬可通过水解沉淀法以氢氧化铬的形态除去， 铬的脱除率达94.44%。
Recovery of nickel and cobalt from electromachining sludge of a nickel alloy was investigated. According to component of the sludge and thermodynamical analysis, the sludge was treated by using a washing—leaching—hydrolysis precipitation process. The results show that soluble compounds such as sodium chloride, sodium nitrate and a part of chromium salts can be washed out from the sludge. In the following sulphuric acid leaching process, nickel, cobalt and chromium in the washed sludge can be leached out, but tungsten and molybdenum remain in the leaching residue. Extraction ratio of nickel and cobalt in the leaching process amounts to 98%. The chromium in the leach solution can be removed as chromium hydroxide by using a hydrolysis-precipitation process and the efficiency of chromium removal reaches 94.44%.
参考文献
| [1] | Bolbat F F;Lesh E U.Group of Heavy Nonferrous Metals, Northeastern Institute of Technology transl. New Method of Nickel and Cobalt Metallurgy(镍钴冶金新方法)[M].北京:冶金工业出版社,1981:303-305. |
| [2] | 乐颂光;夏忠让;余邦林.Cobalt Metallurgy(钴冶金)[M].北京:冶金工业出版社,1981:303-305. |
| [3] | Flynn D R;Twidwell L G.Selective recovery of nickel and cobalt from electromachining solution[A].Warrendale:The Mineral Metal & Material Society,1991:353-363. |
| [4] | 乐颂光;鲁军乐.Production of Secondary Nonferrous Metals(再生有色金属生产)[M].Changsha:Central South University of Technology Press,1994:30-38. |
| [5] | 江丽,王卫红,陆严宏.溶剂萃取法分离二次电池废泡沫式镍极板中镍、镉、钴的研究[J].湿法冶金,2000(01):46-50. |
| [6] | Plysunova N V;ZHANG Yu;Muhammed M .Critical evaluation of thermodynamic of complex formation of metal ions in aqueous solution,Ⅳ.hydrolysis and hydro-complexes of Ni2+ at 298.15*!K[J].HYDROMETALLURGY,1998,48:43-63. |
| [7] | Plysunova N V;ZHANG Yu;Muhammed M .Critical evaluation of thermodynamic of complex formation of metal ions in aqueous solution,Ⅴ.hydrolysis and hydro-complexes of Co2+ at 298.15*!K[J].HYDROMETALLURGY,1998,48:153-169. |
| [8] | 彭少方.Tungsten Metallurgy(钨冶金学)[M].北京:冶金工业出版社,1981:7-8. |
| [9] | 祁顺勤.铬和锰的性质及其应用[M].北京:北京教育出版社,1992:26-27. |
| [10] | Brook P A .E-pH diagram for Cr-H2O system[J].Corrosion Science,1972,12:297-299. |
| [11] | Jackson E.Hydrometallurgical Extraction and Reclamation[M].New York:Chichester,1987:157-158. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%