从铜冶炼烟气酸洗液中分离富集铼  

Separation and Enrichment of Rhenium from Acid Washing Solution of Copper Smelting Flue Gas

作　　者：陈昆昆 李林波[1] 操齐高[2] 张卜升[2] Chen Kunkun;Li Linbo;Cao Qigao;Zhang Bosheng(School of Metallurgical Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China;Northwest Institute for Nonferrous Metal Research,Xi’an 710016,China)

机构地区：[1]西安建筑科技大学冶金工程学院,陕西西安710055 [2]西北有色金属研究院,陕西西安710016

出　　处：《稀有金属材料与工程》2023年第1期345-350,共6页Rare Metal Materials and Engineering

基　　金：国家重点研发计划(2018YFC1901704)。

摘　　要：铜冶炼烟气酸洗液经D296阴离子交换树脂吸附后,再依次采用氨水解吸Sb,NaOH和酒石酸混合溶液解吸Bi,NH4SCN溶液解吸Re,实现Re/Sb/Bi的分步解吸并获得铼富集液。结果表明:酸洗液电位对Re、Sb、Bi吸附率没有明显影响,适宜的酸洗液H_(2)SO_(4)浓度为43.81 g·L^(-1),Re、Sb、Bi吸附率分别为100%、6.55%和89.05%;D296树脂吸附Re的穿透容量和饱和容量分别为1.308和1.773 g·L^(-1),且树脂利用率为73.77%;先采用12.5%氨水解吸Sb,16%NaOH+140 g·L^(-1)酒石酸混合溶液解吸Bi,通过添加酒石酸可有效抑制Bi水解,再采用10%NH_(4)SCN溶液解吸Re,得到铼富集液,其Cu、As、Sb、Bi浓度均降至1 mg·L^(-1)以下,且使酸洗液中Re富集了4倍。The acid washing solution of copper smelting flue gas was adsorbed by D296 anion exchange resin,and then Sb was desorbed by ammonia,Bi was desorbed by NaOH and tartaric acid mixed solution,and Re was desorbed by NH4SCN solution.The step-by-step desorption of Re/Sb/Bi was realized and rhenium enrichment solution was obtained.The results show that the potential of acid washing solution has no significant effect on the adsorption rates of Re,Sb and Bi.The appropriate concentration of H_(2)SO_(4) in acid washing solution is 43.81 g·L^(-1),and the adsorption rates of Re,Sb and Bi are 100%,6.55%and 89.05%,respectively.The breakthrough capacity and saturation capacity of D296 resin for adsorption of Re are 1.308 and 1.773 g·L^(-1),respectively,and the utilization rate of resin is 73.77%.Firstly,12.5%ammonia is used to desorb Sb,and 16%NaOH+140 g·L^(-1)tartaric acid mixed solution is used to desorb Bi.The hydrolysis of Bi can be effectively inhibited by adding tartaric acid,and then 10%NH_(4)SCN solution is used to desorb Re to obtain rhenium enrichment solution.The concentrations of Cu,As,Sb and Bi in rhenium enrichment solution decrease to less than 1 mg·L^(-1).Re concentration in acid washing solution is enriched four times.

关 键 词：铼 铜冶炼 烟气酸洗液 离子交换 富集 

分 类 号：TF841.8[冶金工程—有色金属冶金]