高酸低铜萃余液串联靶向回收金属试验  

Targeted Recycle of Metals Successively from High-Acid and Low-Copper Raffinate

作　　者：王弘 伍赠玲 季常青[1,2] 杨鸿翔 朱峰 钟萍丽[1,2] WANG Hong;WUZeng-ling;JI Chang-qing;YANG Hong-xiang;ZHU Feng;ZHONG Ping-li(State Key Laboratory of Comprehensive Utilization of Low Grade Refractory Gold Ores,Zijin Mining Group Co.,Ltd.,Xiamen 361101,Fujian,China;Zijin Mining Group Co.,Ltd.,Shanghang 364200,Fujian,China)

机构地区：[1]低品位难处理黄金资源综合利用国家重点实验室,福建厦门361101 [2]紫金矿业集团股份有限公司,福建龙岩364200

出　　处：《有色金属（冶炼部分）》2022年第2期16-20,共5页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家重点研发计划项目(2018YFC1801800)。

摘　　要：低品位硫化铜矿湿法提铜系统产生大量萃余液,酸浓度和铁含量高,有价金属铜、锌、铝含量低。不同pH区间金属中和沉淀行为存在差异,采用pH控制可实现大量的铁与其他有价金属分离的目的。金属硫化物的溶度积存在差异,通过硫化法串联靶向回收铜、锌;铝可通过中和法回收。串联靶向回收工艺可实现萃余液中多种有价金属的资源化回收利用,铜、锌、铝综合回收率分别为78.8%、76.7%、74.3%,处理后液可达到《铜、镍、钴工业污染物排放标准》(GB 25467—2010)的要求。High-acid and low-copper raffinate is produced in bioleaching system of low-grade sulfide copper mine.Iron can be effectively separated with other metals through control of pH value according to differences of precipitation behavior of metals in different pH value range.According to differences of solubility of metal sulfide,copper and zinc can be recovered successively through sulfuration.Aluminum can be recovered by neutralization.Copper,zinc and aluminum was targeted recycled successively with comprehensive recovery of 78.8%,76.7% and 74.3% respectively.After treatment,the liquid can be discharged which meets the requirements of emission Standards for Pollutants from Copper,Nickel and Cobalt Industries(GB 25467—2010).

关 键 词：萃余液 高酸低铜 串联 靶向回收 资源化 Cu ZN Al 

分 类 号：TF803.23[冶金工程—有色金属冶金]