用溶剂萃取法从硫酸镍溶液中去除钙、铁  

Removal of Calcium and Iron From Nickel Sulfate Solution by Solvent Extraction

作　　者：李凡[1] 朱军[1] 白苗苗[1] 赵兴红[1] 赵奇[1] 朱明明[1] 余娟[1] 

机构地区：[1]西安建筑科技大学冶金工程学院,陕西西安710055

出　　处：《湿法冶金》2016年第2期132-135,共4页Hydrometallurgy of China

基　　金：国家青年自然科学基金资助项目(513041151)

摘　　要：研究了从某硫化镍精矿高温氧压酸浸液预处理后的溶液中以萃取法去除钙、铁。以P204为萃取剂,磺化煤油为稀释剂,考察了初始水相pH、温度、V_o∶V_a、萃取剂体积分数、振荡时间和萃取级数对萃取除钙、铁的影响。试验确定的最佳条件为:有机相组成20%P204+80%磺化煤油,V_o∶V_a=1∶1,水相初始pH=2.2,温度40℃,振荡时间5min,萃取级数5级。最佳条件下,铁、钙萃取率可达97%以上,除杂效果较好。Removal of calcium and iron from a high temperature oxygen pressure acid leaching solution of nickel sulfide concentrate by solvent extraction was investigated.P204 was used as extractant and sulfonated kerosene as diluent.The effects of aqueous solution pH,temperature,phase ratio（Vo∶Va）,P204 concentration,oscillation time and extraction series on solvent extraction were examined.The results show that at the optimum conditions of P204 concentration of 20%,phase ratio（Vo∶Va）of1/1,solution initial pH of 2.2,temperature of 40 ℃,oscillation time of 5min,the extraction series of 5,the extraction rate of iron and calcium can reach over 97%.The removal effect for calcium and iron is good.

关 键 词：硫酸镍溶液 溶剂萃取 P204 铁 钙 去除 

分 类 号：TF804.2[冶金工程—有色金属冶金] TF803.25