Solvent extraction separation and recovery of cobalt and nickel from sulphate medium using mixtures of TOPS 99 and TIBPS extractants
Solvent extraction separation and recovery of cobalt and nickel from sulphate medium using mixtures of TOPS 99 and TIBPS extractants
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DOI：
10.1016/j.mineng.2009.01.002
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发表时间：
2009-04-01
影响因子：
4.8
通讯作者：
Park, Kyung Ho
中科院分区：
文献类型：
--
作者：
Reddy, B. Ramachandra;Rao, S. Venkateswara;Park, Kyung Ho
我们在本文中报道了使用在煤油中稀释的 TOPS 99 和 TIBPS 混合物从合成硫酸盐溶液中溶剂萃取分离钴和镍的方法。进料含有 1.061 g/L Co 和 1.187 g/L Ni。使用萃取剂协同混合物进行的萃取实验显示，在 pH 1.1 时，0.1 M TOPS 99 和 0.05 M TIBPS 的最高分离因子为 12,245。使用 0.1 M TOPS 99 和 0.05 M TIBPS 萃取剂混合物萃取 Co 的 McCabe-Thiele 图表明，在水相与有机相 (A/O) 比为 2 的情况下，需要三个理论阶段才能萃取 >99% Co。在 pH 1.1 下使用 0.1 M TOPS 99 和 0.05 M TIBPS 混合物进行三阶段逆流萃取模拟测试，证实用 Ni 萃取 Co 的效率为 99.5%共萃取0.02%。结果表明，添加 TIBPS-TOPS 99 可作为 Co 提取的增效剂和 Ni 的拮抗剂。 (C) 2009 Elsevier Ltd. 保留所有权利。
We report in this paper the solvent extraction separation of cobalt and nickel from synthetic sulphate solutions using TOPS 99 and TIBPS mixtures diluted in kerosene. The feed contains 1.061 g/L Co and 1.187 g/L Ni. Extraction experiments with synergistic mixture of extractants showed highest separation factor of 12,245 with 0.1 M TOPS 99 and 0.05 M TIBPS at pH 1.1. McCabe-Thiele plot for Co extraction with 0.1 M TOPS 99 and 0.05 M TIBPS extractants mixture indicated the necessity of three theoretical stages for >99% Co extraction at an aqueous to organic phase (A/O) ratio of 2. A three stage counter current extraction simulation test conducted at pH 1.1 with 0.1 M TOPS 99 and 0.05 M TIBPS mixture, confirmed Co extraction of 99.5% with Ni co-extraction of 0.02%. The results demonstrated that the addition of TIBPS-TOPS 99 acts as a synergist for Co extraction and antagonist for Ni. (C) 2009 Elsevier Ltd. All rights reserved.