Recovery of Co(II) and Ni(II) from hydrochloric acid solution of alloy scrap
查看参考文献29篇
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文摘
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A hydrometallurgical process was developed for recovery of nickel and cobalt from the hydrochloric acid leaching solution of alloy scraps. The process consists of five major unit operations: 1) leaching with 6 mol/L hydrochloric acid under the L/S ratio of 10:1 at 95 °C for 3 h; 2) copper replacement by iron scraps under pH value of 2.0 at 80 °C, and stirring for 1 h; 3) removal of iron and chromium by chemical precipitation: iron removal under pH value of 2.0 at 90 °C by dropwise addition of sodium chlorate and 18% sodium carbonate solution, then chromium removal under pH value of 4.0 at 70 °C by addition of nickel carbonate solution, stirred by air flow for 2 h; 4) selective separation of cobalt from nickel by extraction using 30% trialkyl amine+50% kerosene (volume fraction) and tri-n-butylphosphate (TBP) as a phase modifier with the O/A ratio of 2:1, and stripping of cobalt with 0.01 mol/L HCl; 5) crystallization of nickel chloride and electrodeposition of cobalt. It is found that the nickel recovery of 95% and the cobalt recovery of approximately 60% with purity over 99.9% are obtained by this process. |
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来源
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Transactions of Nonferrous Metals Society of China
,2008,18(5):1262-1268 【核心库】
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DOI
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10.1016/s1003-6326(08)60214-9
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关键词
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alloy scrap
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nickel
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cobalt
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recovery
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trialkyl amine
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地址
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1.
Northeastern University, Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Shenyang, 110004
2.
Northeastern University, State Key Laboratory of Rolling and Automation, Shenyang, 110004
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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1003-6326 |
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学科
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金属学与金属工艺 |
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基金
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国家自然科学基金
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文献收藏号
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CSCD:3371042
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参考文献 共
29
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