用草酸从铜冶炼稀酸中选择性沉铜除砷试验研究  

Selective Precipitation of Copper and Removal of Arsenic from Copper Smelting Dilute Acid Using Oxalic Acid

作　　者：王雷 张峰 张桧楠 WANG Lei;ZHANG Feng;ZHANG Huinan(Shandong Humon Smelting Co.,Ltd.,Yantai 264000,China;Yantai Key Laboratory of Gold and Copper Concentrate Clean Smelting,Yantai 264109,China)

机构地区：[1]山东恒邦冶炼股份有限公司,山东烟台264000 [2]烟台市金铜精矿清洁冶炼重点实验室,山东烟台264109

出　　处：《湿法冶金》2025年第1期40-44,共5页Hydrometallurgy of China

摘　　要：以铜冶炼稀酸为原料,研究了采用草酸选择性沉铜除砷,考察了草酸用量、溶液pH、搅拌速度、反应温度和时间对铜砷分离的影响。结果表明:在H_(2)C_(2)O_(4)/Cu物质的量比1.1、溶液pH=0.4、搅拌速度500 r/min、反应温度25℃、反应时间30 min条件下,铜沉淀率达98.5%以上,砷沉淀率低于0.20%,铜、砷可实现高效分离。Aiming at the dilute acid of copper smelting as raw material,the selective precipitation of copper and removal of arsenic with oxalic acid was studied.The effects of oxalic acid addition dosage,solution pH,stirring speed,reaction temperature and time on the separation of copper and arsenic were investigated.The results show that under the conditions of H_(2)C_(2)O_(4)/Cu molar ratio of 1.1,solution pH=0.4,stirring speed of 500 r/min,reaction temperature of 25℃and reaction time of 30 min,the precipitation rate of copper is more than 98.5%,and the precipitation rate of arsenic is less than 0.20%,copper and arsenic can be separated efficiently.

关 键 词：稀酸 草酸 选择性 铜 沉淀 砷 分离 

分 类 号：TF803.21[冶金工程—有色金属冶金] TF811