矿产综合利用2025，Vol.46Issue(1)：132-138,7.DOI:10.3969/j.issn.1000-6532.2025.01.016
多段臭葱石沉淀法实现污酸中铜砷分离
Separation of Copper and Arsenic from Polluted Acid by Multi-stage Scorodite Precipitation
杨富1
作者信息
- 1. 云南黄金矿业集团股份有限公司,鹤庆北衙矿业有限公司,云南 大理 671507
- 折叠
摘要
Abstract
The production process of sulfuric acid produces a large amount of polluted acid containing high concentration of heavy metal ions such as copper,arsenic,and lead.The traditional sulfidation method or lime method cannot remove arsenic with high selectivity to realize the recovery of valuable metals.In this study,the multi-stage scorodite precipitation method was used to achieve the efficient separation of copper and arsenic in polluted acid.The arsenic precipitation rate from the polluted acid reached 97.1%with a copper loss rate of 9.1%at the conditions of airflow rate of 160 L/min,1%addition of seed crystals(scorodite crystals),reaction temperature of 70℃,five-stage step-by-step precipitation removal of arsenic(24 min reaction time for each stage with an initial pH value of 1.1,1.9,2.4,3.1 and 3.8 respectively for the five-stage).The multi-stage scorodite precipitation method could effectively shorten the reaction time(compared with the one-step scorodite precipitation method)reducing the comprehensive cost significantly which promised a strong application prospect.关键词
环境工程/污酸/铜砷分离/臭葱石Key words
Environmental engineering/Polluted acid/Separation of copper and arsenic/Scorodite分类
矿山工程引用本文复制引用
杨富..多段臭葱石沉淀法实现污酸中铜砷分离[J].矿产综合利用,2025,46(1):132-138,7.
