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.
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)
出处
《湿法冶金》
北大核心
2025年第1期40-44,共5页
Hydrometallurgy of China
关键词
稀酸
草酸
选择性
铜
沉淀
砷
分离
dilute acid
oxalic acid
selectivity
copper
precipitation
arsenic
separation
