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

作　　者：宋紫欣 谢海云[1,2] 朱坤 晋艳玲 陈家灵[1] 曾鹏 张群丽 陈海君 刘殿文 SONG Zixin;XIE Haiyun;ZHU Kun;JIN Yanling;CHEN Jialing;ZENG Peng;ZHANG Qunli;CHEN Haijun;LIU Dianwen(Faculty of Land Resources Engineering,Kunming University of Science and Technology,Kunming 650093,China;Yunnan Key Laboratory of Green Separation and Enrichment of Strategic Mineral Resources,Kunming 650093,China;Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming,650093,China;Yunnan Gold Group Weishan County Zhacun Gold Mine Co.,Ltd.,Dali 671000,Yunnan,China)

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650093 [2]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 [4]云南黄金集团巍山县扎村金矿有限责任公司,云南大理671000

出　　处：《昆明理工大学学报（自然科学版）》2024年第1期45-53,共9页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：国家自然科学基金项目(52064027);云南省重大科技专项(202202AG050015)。

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、Na_(2)S添加量以及沉淀时间对Cu^(2+)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、Na_(2)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,Cu^(2+)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.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 elements from the acid pyrite cinder washing solution,a combined process of copper sulfide precipitation and microporous gold interception was employed.By conducting experiments and comparing the effects of different pH values,Na_(2)S addition amounts,and precipitation times on the recovery of Cu^(2+)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 45,Na_(2)S addition amount of 4395 mg/L,precipitation time of 10 minutes,and a filter cloth with a pore size of 2μm.Following the combined experiment,the Cu^(2+)recovery rate was 99.84%,and the total Au recovery rate reached 9636%,achieving efficient recovery of copper and gold elements from the washing 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 

分 类 号：TF831[冶金工程—有色金属冶金] TF811