Extraction of cobalt(II) from an ammonium nitrate-containing leach liquor by an ammonium salt of di(2-ethylhexyl)phosphoric acid

被引：12
作者：
Matjie, RH
Mdleleni, MM
Scurrell, MS
机构：
[1] Sasol Technol Pty Ltd, ZA-1947 Sasolburg, South Africa
[2] Sasol N Amer, Westlake, LA 70669 USA
[3] Univ Witwatersrand, Dept Chem, ZA-2001 Johannesburg, South Africa
来源：
MINERALS ENGINEERING | 2003年 / 16卷 / 10期
关键词：
solvent-extraction; hydrometallurgy; reclamation; leaching; filtration;
D O I：
10.1016/S0892-6875(03)00265-6
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A hydrometallurgical process that involves solvent extraction and selective precipitation has been used to selectively recover Co2+ from an aqueous filtrate containing mostly Co2+, NH4+ and NO3- ions and trace amounts of Pt2+, Al3+ and Fe3+ ions. The effect of pH on the precipitation efficiencies of Al3+ and Fe3+ ions from the leach liquor was investigated. Solvent extraction exhibited good performance in terms of both Co2+ and Pt2+ ions extraction efficiency and phase separation when ammonium salt of di(2-ethyl-hexyl)phosphoric acid was used as an extractant in the presence of a tributylphosphate modifier. Cobalt was stripped from the organic phase with nitric acid to yield cobalt nitrate. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1013 / 1017
页数：5
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