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投稿时间:2013-09-15 修订日期:2013-09-15
投稿时间:2013-09-15 修订日期:2013-09-15
中文摘要: 从铅阳极泥中提取铋并富集金银等有价金属元素,对提高冶金二次资源的综合利用具有重要意义。本文将脱砷后铅阳极泥熔铸成粗铋作为BiCl3-HCl-NaCl电解体系的阳极,重点研究了温度、电流密度、酸度、Bi3 浓度、NaCl添加量对电解过程的影响。考察了电流效率、电能消耗及阴极产物纯度。结果表明:在电解液温度30℃、电流密度150A/m2、游离HCl浓度80g/L、Bi3 浓度120g/L、NaCl添加量80g/L条件下,得到了致密的薄板状阴极铋,电流效率达到98%,电能消耗约为136kW.h/tBi,阴极铋纯度达到99.8%。
Abstract:The extraction of bismuth and enrichment of other valuable metals such as gold and silver elements from lead anode slime that was important to improve the comprehensive utilization of metallurgical secondary resources. In this paper, lead anode slime of arsenic removal was cast into the crude bismuth which as anode on BiCl3-HCl-NaCl electrolyte system. The influences of temperature, current density, acidity, Bi3 concentration, the addition level of NaCl on the electrolysis process were discussed. The current efficiency, power consumption and purity of cathode product were investigated. Optimum process parameters, namely, temperature of 30℃, current density of 150A/m2, acidity of 80g/L, Bi3 concentration of 120g/L, the addition level of NaCl of 80g/L, were ascertained. The result show that under optimum conditions, dense sheet-shaped cathode bismuth was obtained, current efficiency reached 98%, the power consumption was about 136kW.h/tBi and purity of cathode bismuth reached 99.8%.
keywords: arsenic removal lead anode slime electrolysis recovery
文章编号:20130915001 中图分类号: 文献标志码:
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陈汉森,徐瑞东,朱云,何世伟,华宏全,李英伟.电解法从铅阳极泥提取铋的研究[J].矿冶,2015,24(1):44~49.
陈汉森,徐瑞东,朱云,何世伟,华宏全,李英伟.电解法从铅阳极泥提取铋的研究[J].矿冶,2015,24(1):44~49.