用溶剂萃取法从含镍钴合金渣酸浸液中深度除钙试验研究  

Removal of Calcium From Acidic Leaching Solution of Nickel and Cobalt Alloy Slag by Solvent Extraction

作　　者：李进 许万祥 王靖坤 王治军 郭瑞 

机构地区：[1]西安瑞鑫科金属材料有限责任公司,陕西西安710016

出　　处：《湿法冶金》2017年第6期489-492,共4页Hydrometallurgy of China

基　　金：青年科技新星基金资助项目(2016KJXX-59)

摘　　要：研究了从含高浓度镍钴合金渣酸浸液中萃取脱除低浓度钙,考察了钙离子去除的影响因素。试验结果表明:以皂化率35%的10%P204+90%260#煤油为有机相,在水相pH=5.0、Vo∶Va=1∶2、萃取时间3min、温度25℃条件下,Ca^(2+)单级萃取率达80%,Co^(2+)、Ni^(2+)单级萃取率分别为27%和9%;在此基础上,通过3级逆流萃取,Ca^(2+)质量浓度降至1mg/L以下,达到生产高品质硫酸钴、硫酸镍产品所需料液对钙离子的要求。Removal of low concentration calcium from a high concentration of nickel and cobalt ions alloyslag acidic leaching solution by solvent extraction was studied.The factors affecting the removal of calcium ions were investigated.The results show that using 10%P204＋90%260#kerosene as organic phase,under the conditions of water phase pH of 5.0,organic phase-to-water phase ratio of1∶2,saponification rate of organic phase of 35%,extraction time of 3 min,and temperature of 25 ℃the single extraction rates of Ca^（2＋）,Co^（2＋）and Ni ^（2＋）are 80%,7% and 9%,respectively.By 3-stage countercurrent extraction,the content of Ca^（2＋）in the solution is lower 1 mg/L which can be used to produce high-quality cobalt sulfate and nickel sulfate.

关 键 词：合金渣 酸浸液 P204 溶剂萃取 钙 去除 

分 类 号：TQ138.1[化学工程—无机化工]