黄铁矿烧渣水洗液中Cu^(2+)和Au的综合回收试验分析  

The analysis of comprehensive recovery experiments of Cu^(2+) and Au in the pyrite cinder washing solution

作　　者：张群丽 谢海云[1,2] 朱坤 晋艳玲 陈家灵[1] 宋紫欣 刘殿文 ZHANG Qunli;XIE Haiyun;ZHU Ku;JIN Yanling;CHEN Jialing;SONG Zixin;LIU Dianwen(Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming Yunnan 650093,China;Yunnan Key Laboratory of Green Separation and Enrichment of Strategic Mineral Resources,Kunming Yunnan 650093,China;Faculty of Metallurgical Energy and Energy Engineering,Kunming University of Science and Technology,Kunming Yunnan 650093,China;Zhacun Gold Mining Co.,Ltd.of Yunnan Gold Group in Weishan County,Dali Yunnan 671000,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：《矿物学报》2024年第2期287-294,共8页Acta Mineralogica Sinica

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

摘　　要：云南某黄金冶炼厂黄铁矿烧渣水洗液日产量大,含有价的Au和Cu^(2+),采用铁粉置换联合微孔截金的新工艺回收水洗液中的Cu^(2+)和Au,具有巨大的经济价值和环境效益。本文研究了铁粉置换时p H值、铁粉用量和置换时间等因素对Cu^(2+)、Au回收率的影响,探究了在微孔过滤中微孔粒径的大小(2μm、1μm、<1μm)对颗粒金回收的影响。试验结果表明p H值为3、铁粉用量6 g/L、反应时间2.5 h的条件下,水洗液中Cu^(2+)的置换率达到98.88%,置换效果较好,微孔粒径<1μm时,金的回收率达到99.47%。铁粉置换联合微孔截金新工艺对Cu^(2+)和Au的回收率较高,具有物料消耗小、成本低等优点,经济效益明显。The daily output of pyrite cinder washing solution,which contains valuable Au and Cu^(2+),in a gold smelter in Yunnan is vey large.The recovery of Cu^(2+)and Au from the washing solution of pyrite cinder by using a new technique of iron powder replacement combined with microporous gold interception has great economic value and environmental benefits.In this paper,we have studied the effects of pH value,iron powder dosage,and replacement time on the recovery rate of Cu^(2+)and Au from the washing solution of pyrite cinder in the iron powder replacement process,and explored the effects of micropore size(2μm,1μm,<1μm)on the interception and retention of gold particles in the microporous filtration process.The experimental results show that the replacement rate of Cu^(2+)in the washing solution of pyrite cinder was 98.88%under the conditions of pH value of 3,iron powder dosage of 6g/L,and reaction time of 2.5h.The replacement effect is excellent.When the pore size is less than 1μm,the recovery rate of Au was 99.47%.The new technique of iron powder replacement combined with microporous gold interception has advantages of high recovery rate,low material consumption,low cost and obvious economic benefits for recovering Cu^(2+)and Au from the washing solution of pyrite cinder.

关 键 词：黄铁矿烧渣 水洗液 铁粉 微孔过滤 

分 类 号：X751[环境科学与工程—环境工程]