Solvent extraction of nickel from iron and cobalt containing sulfate solutions

F. Arslan, Zeynep Büşra Güven, Ünzile Yenial Arslan, B. Benli, C. Arslan
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引用次数: 1

Abstract

In this study, solvent extraction is applied for extracting nickel from sulfate solutions containing iron and cobalt ions. This process can also be applied for the cleaning of waste solutions and for increasing solution concentrations after the leaching of low-grade nickel ores. Di-2-Ethylhexyl phosphoric acid (D2EHPA) was used as an extractant for this purpose. Effects of pH, aqueous/organic (A/O) phase ratio, iron, and cobalt ion contents of the solution on nickel extraction efficiency were investigated. The McCabe-Thiele diagrams for extraction and stripping steps were developed to determine the number of stages required. A total of two stages were required for 96.3% of Ni extraction and a total of two stages to strip nickel with 98% efficiency.
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从含铁和钴的硫酸盐溶液中溶剂萃取镍
本研究采用溶剂萃取法从含铁和钴离子的硫酸盐溶液中提取镍。该工艺也可用于废液的清洗和提高低品位镍矿浸出后的溶液浓度。采用二-2-乙基己基磷酸(D2EHPA)作为萃取剂。考察了溶液pH、水/有机(A/O)比、铁离子和钴离子含量对镍萃取效率的影响。开发了用于提取和剥离步骤的McCabe-Thiele图,以确定所需的级数。共需两段萃取96.3%的镍,共需两段萃取98%的镍。
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