矿产综合利用Issue(6)：90-92,3.DOI:10.3969/j.issn.1000-6532(2017)06.019
朝鲜某冶炼渣中银的回收试验
Recovery Experiment of Silver from Korea Smelting Slag
摘要
Abstract
Smelting slag is the waste production of smelting enterprises,which will not only seriously pollute environment but also waste resources.Comprehensive utilization of metallurgical slag smelting is the necessary way of sustainable development.A smelting slag from North Korea is a lead and zinc smelting that was produced by smelting enterprises.Results multielement analysis showed that the smelting slag contains 370 g/t silver and has the comprehensive recovery value.The composition of lead and zinc is comparatively high but the oxidation degree is also high.Generally,the fuming method can be used to recycle them,but low recovery of valuable metals,poor working conditions,high operation cost,high energy consumption and the need to consume a large amount of metallurgical coke and other shortcomings block their recovery.Silver was recovered by cyanidation because the silver finely disseminated in the slag and the slag badly clayed.Factors influence the leaching rate were researched,such as leaching fineness,type and dosage of protecting alkali,concentration of cyanide and pulp density.Results showed that the optimum leaching conditions were as follows:leaching fineness was-2 mm,using lime as protecting alkali and the dosage was 30 kg/t,the pH value was 11,cyanide concentration was 0.10％ and leaching pulp density was 30％.Under the optimum conditions the leaching rate of silver reached to 84.05％,which met the demand of the effective recovery of silver from the slag and create economic and social benefits for this company.关键词
冶炼渣/银/氰化浸出Key words
Smelting slag/Silver/Cyanide leaching分类
矿业与冶金引用本文复制引用
杨超,王宇斌,王真,雷大士,何廷树..朝鲜某冶炼渣中银的回收试验[J].矿产综合利用,2017,(6):90-92,3.基金项目
陕西省科技厅基金项目(2014SJ-04) （2014SJ-04）
