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萃铜余液梯级综合回收有价元素试验研究
- 刘占林|郭建东|朱德兵|王其亮
- 作者单位：
- 山东国大黄金股份有限公司|山东国大黄金股份有限公司|山东国大黄金股份有限公司|山东国大黄金股份有限公司
基金项目：
- isnull
详细信息：
- 作者简介：
- 刘占林（1972—），男，山东招远人，高级工程师，从事金银冶炼工艺技术研究应用与生产管理工作；山东省烟台市招远市国大路668号，山东国大黄金股份有限公司，265406；E-mail：lzl@sdguoda.com
- 通讯作者：
- isnull
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Experimental study on the gradient comprehensive recovery of valuable elements from residual copper extraction solution
- English Author：
- Shandong Guoda Gold Co.,Ltd.|Shandong Guoda Gold Co.,Ltd.|Shandong Guoda Gold Co.,Ltd.|Shandong Guoda Gold Co.,Ltd.
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
萃铜余液采用常规石灰中和法处理，中和费用高，中和石膏渣难以处置，堆存管理难度大。针对某含铜锌金精矿焙烧、酸浸、萃取所得萃铜余液性质，进行了梯级综合回收试验研究。结果表明：采用一级铁粉置换回收金银，二级氢氧化钙中和、硫化钠沉淀富集回收铜，三级沉淀富集回收锌的梯级回收工艺流程，金、银、铜、锌的平均回收率分别达到87.50 %、80.00 %、91.26 %、98.70 %，实现了萃铜余液中有价金属的梯级综合回收。
关键词:
萃取；萃铜余液；梯级；综合回收；有价元素；铁粉置换；硫化沉淀
Abstract:
Residual copper extraction solution can be treated with conventional lime neutralization method.However,the method costs much,and the neutralization gypsum slag is difficult to deal with and challenging to manage when stockpiled.According to the properties of the residual copper extraction solution obtained from the roasting,acid leaching and extraction of a gold concentrate containing copper and zinc,experimental study on the gradient comprehensive recovery is conducted.The results show that the process that gold and silver are recovered with iron powder replacement for the first grade,copper is recovered with calcium hydroxide neutralization and sodium sulfide precipitation and enrichment for the second grade,and zinc is recovered with precipitation and enrichment for the third grade,can lead to gold recovery rate 87.50 %,silver recovery rate 80.00 %,copper recovery rate 91.26 % and zinc recovery rate 98.70 %,achieving the gradient comprehensive recovery of valuable metals from residual copper extraction solution.
Keywords:
extract;residual copper extraction solution;gradient;comprehensive recovery;valuable element;iron powder replacement;sulfide precipitation
