C923萃取铜电解液中砷和铋的试验研究  

Experimental Investigation of Using C923 to Extract Arsenic and Bismuth in Copper Electrolyte

作　　者：王瑞永[1,2] 

机构地区：[1]紫金矿业集团股份有限公司,福建上杭364200 [2]低品位难处理黄金资源综合利用国家重点实验室,福建上杭364200

出　　处：《黄金科学技术》2015年第1期90-94,共5页Gold Science and Technology

基　　金：国家重点基础研究发展计划项目"含金黄铁矿表面结构研究及浮选药剂设计"(编号:2012(B724202))资助

摘　　要：采用C923萃取铜电解液中的砷和铋,考察萃取剂浓度、酸度、萃取时间和相比等因素对砷萃取率的影响,并探讨原液中氯离子浓度对C923萃取铋的影响。结果表明,在优化工艺条件下,砷的单级萃取率为68.41%,三级错流萃取率为97.00%。氯离子浓度为0.86 g/L时,铋的单级萃取率为95.15%。负载相用水二级错流反萃砷,总反萃率为88.20%,再用酒石酸—氢氧化钠混合液反萃铋,反萃率为81.49%。The C923 was employed to leach arsenic and bismuth in copper electrolyte with the purpose to observed influence of the extractant concentration, acidity,leaching time and phase ratio on the extraction rate to arsenic,moreover,the effect of chloride ion concentration on extracting bismuth was discussed as well.The results demonstrated that single-stage extraction rate of arsenic was approximately 68.41% in optimal conditions,and three cross-flow counter-current extraction rate was around 97.00%.However,when chloride ion concentration reached to 0.86 g/L,extraction rate of bismuth was about 95.15%.During the time when applying two cross-flow water with load phase to anti-extract arsenic,the total anti-extraction rate was 88.20%,nonetheless,using mixed solution of tartaric acid-sodium hydroxide to anti-extract bismuth,the result of anti-extraction rate was around81.49%.

关 键 词：铜电解液 萃取法 砷 铋 C923萃取剂 

分 类 号：TF817[冶金工程—有色金属冶金]