摘要
针对湿法炼锌净化工艺存在效率低、锌粉单耗高、成本高的问题,以锌粉为置换剂,采用分步除铜镉工艺去除湿法炼锌中性浸出液中的铜和镉。在除铜工序,研究了锌粉用量、反应时间、反应温度及搅拌强度等工艺参数对除铜的影响。在深度除镉工序,研究了除镉剂用量、除镉时间、除镉温度及搅拌强度等因素对除镉的影响。结果表明,在优化条件下,中性浸出液经一段除铜镉后,溶液中铜含量小于0.01 mg/L、镉含量21.38 mg/L,达到了一段除铜镉的技术控制指标,并且显著减少了一段净化的锌粉消耗量,以10万t/a湿法炼锌系统为例,年可节约成本约1980万元。
Based on the problems of low efficiency,high consumption and high cost of zinc powder in zinc hydrometallurgy purification process,the zinc powder was used as the displacement agent in the process,and the copper and cadmium in the neutral leaching solution of zinc hydrometallurgy could be effectively removed by the step-by-step process.In the process of copper removal,the influence of zinc powder dosage,reaction time,reaction temperature and stirring intensity was studied.In the process of deep cadmium removal,the influence of precipitant dosage,cadmium removal time,cadmium removal temperature and stirring intensity was studied.The results show that the copper content in the medium soaking solution was less than 0.01 mg/L and the cadmium content was 21.38 mg/L,which can reach the technical control index of removing copper and cadmium in one stage,and reduce the zinc powder consumption in one stage.Taking the 100 kt/a zinc hydrometallurgy system as an example,the annual cost could be saved about RMB 19.8 million yuan.
作者
鲁兴武
李守荣
张恩玉
程亮
李俞良
邵传兵
LU Xing-wu;LI Shou-rong;ZHANG En-yu;CHENG Liang;LI Yu-liang;SHAO Chuan-bing(Key Laboratory of New Process for Non-ferrous Metal Smelting and Rare Metal High Utilization Efficiency in Gansu Province, Northwest Research Institute of Mining and Metallurgy, Baiyin 730900, Gansu, China)
出处
《矿冶》
CAS
2020年第1期51-56,共6页
Mining And Metallurgy
基金
甘肃省科技厅科技重大专项计划项目（17ZD2FD013)
关键词
湿法炼锌
净化
除铜镉
降低锌粉消耗
zinc hydrometallurgy
purification
removal of copper and cadmium
reduction of zinc powder consumption
