从铜阳极泥酸浸液中回收铜和碲试验研究  

Study on the Recovery of Copper and Tellurium from Acid Leaching Solution of Copper Anode Slime

作　　者：张亨峰 廖广东 吴星琳[2] 秦庆伟[2] 王珊 

机构地区：[1]湖北大江环保科技股份有限公司,湖北黄石435005 [2]武汉科技大学钢铁冶金及资源利用教育部重点实验室,湖北武汉430081

出　　处：《铜业工程》2017年第3期60-64,共5页Copper Engineering

基　　金：钢铁冶金及资源利用教育部重点实验室开放基金(FMRU201206)

摘　　要：试验研究了从铜阳极泥酸浸液中回收铜和碲的方法,采用AD-100高效铜萃取剂进行萃取铜试验,分析了水相初始pH、相比、萃取剂浓度等对铜萃取的影响,得到最佳工艺,即初始pH2.5、A∶O为2∶1、萃取剂体积浓度为25%、振荡10min时铜的萃取率达92.62%;且萃取过程中每个Cu^(2+)与两个萃取剂分子结合形成AD_2Cu。以亚硫酸钠直接还原除铜后液中的碲,分析了Na_2SO_3添加量、反应温度、搅拌速度以及反应时间对碲还原的影响,得出最佳工艺:Na_2SO_3添加量为20g/L、反应温度90℃、搅拌速度400r/min、反应50min时碲的还原率可达99.48%,且碲以二氧化碲的形式得到回收。The paper investigated the recovery of copper and tellurium from a solution which contained a large amountof copper and tellurium. AD-100 was selected as the extraction solvent for copper recovery. The optimum conditions were：initial pH was 2.5, A：O was 2：1, AD-100 concentration was 25%, and when reaction time was 10min, the extraction rate ofcopper reached 92.62%. What＇ s more, each Cu2＋witb two solvent molecules could form ADaCu. Also, the effects of variousparameters in Na2SO3 reduction of extraction raffinate were studied. It was found that 99.48% Te was reduced under theoptimum conditions. It includes： Na2SO3 concentration was 20g/L, reduction temperature was 90℃, reduction time was 125rainand stirring speed was 650r/rain. Te was recovered as tellurium dioxide.

关 键 词：铜冶炼 阳极泥 浸出 铜 碲 回收 

分 类 号：TF81[冶金工程—有色金属冶金]