硫铁烧渣水洗液中回收金铜试验优化分析
Optimization Analysis of Gold and Copper Recovery Test in Pyrite Cinder Washing Solution
宋紫欣 1谢海云 2朱坤 3晋艳玲 1陈家灵 1曾鹏 1张群丽 1陈海君 1刘殿文2
作者信息
- 1. 昆明理工大学 国土资源工程学院,云南 昆明 650093
- 2. 昆明理工大学 国土资源工程学院,云南 昆明 650093;云南省战略金属矿产资源绿色分离与富集重点实验室,云南 昆明 650093
- 3. 昆明理工大学 冶金与能源工程学院,云南 昆明 650093;云南黄金集团巍山县扎村金矿有限责任公司,云南 大理 671000
- 折叠
摘要
硫铁烧渣水洗液日产量大,并含有丰富金、铜等有价元素,具有极大的综合回收利用价值.采用硫化沉铜—微孔截金联合工艺实现从酸性硫铁烧渣水洗液中回收铜、金有价元素.通过对比不同pH值、Na2 S添加量以及沉淀时间对Cu2+和Au回收率的影响,确定硫化沉淀最佳条件.在水洗液pH值为 4.5、Na2 S添加量为 439.5 mg/L、沉淀时间 10 min并采用孔径 2μm滤布条件下,进行联合工艺试验.组合试验后,Cu2+回收率为99.84％,Au总回收率达 96.36％,实现了水洗液中铜、金元素的高效回收,在节能环保的同时具有较大的潜在经济效益.
Abstract
The daily production of pyrite cinder washing solution is substantial and contains valuable elements such as gold and copper,demonstrating significant comprehensive recycling value.To recover these precious ele-ments from the acid pyrite cinder washing solution,a combined process of copper sulfide precipitation and micro-porous gold interception was employed.By conducting experiments and comparing the effects of different pH val-ues,Na2 S addition amounts,and precipitation times on the recovery of Cu2+and Au,the optimal conditions for sulfide precipitation were determined.The combined process test was carried out under the following conditions:washing solution pH of 4.5,Na2 S addition amount of 439.5 mg/L,precipitation time of 10 minutes,and a filter cloth with a pore size of 2 μm.Following the combined experiment,the Cu2+recovery rate was 99.84％,and the total Au recovery rate reached 96.36％,achieving efficient recovery of copper and gold elements from the wash-ing solution.This approach not only contributes to energy conservation and environmental protection but also holds substantial potential economic benefits.
关键词
硫铁烧渣/水洗液/Na2S/Cu2+和Au/微孔过滤Key words
pyrite cinder/washing solution/Na2 S/Cu2+and Au/microporous filtration引用本文复制引用
基金项目
国家自然科学基金(52064027)
云南省重大科技专项(202202AG050015)
出版年
2024
NETL
NSTL
维普
万方数据