摘要
青海某含砷含碳微细浸染型金矿石氧化率达40%,易泥化绢云母相对含量达26%。针对该矿石性质,进行了选矿工艺研究。结果表明:采用原矿全泥氰化、重选、浮选等单一流程,金回收指标均不理想;采用精扫选、中矿分流浮选—尾矿再磨、环保浸金剂浸出联合工艺,在正交试验获得的最佳条件下,可获得金精矿金品位31.95 g/t,金总回收率88.05%的较好指标,实现了金的高效回收。
The oxidation rate of a microfine disseminated arsenic and carbonaceous gold ore from Qinghai is 40%,and the relative content of sericite prone to argillization is 26%.According to the ore properties,the mineral processing technology was studied.The results show that the gold recovery index is not ideal by using single processes such as run-of-mill ore all-sliming cyanidation,gravity separation and flotation;under the optimal conditions obtained by orthogonal tests,the joint process combining cleaning and scavenging,middlings diversion flotation-tailings regrinding,and environment-friendly reagent leaching can obtain the gold concentrate with gold grade 31.95 g/t and the total recovery rate of gold is 88.05%,which is good,realizing the efficient recovery of gold.
作者
常征
熊馨
孙晓华
Chang Zheng;Xiong Xin;Sun Xiaohua(Qinghai Provincial Geology and Mineral Resources Test Application Center)
出处
《黄金》
CAS
2021年第1期55-58,63,共5页
Gold
基金
青海省重点研发与转化计划项目(2019-SF-139)。
关键词
微细浸染型金矿
含砷含碳
中矿分流
浮选
环保浸金剂
联合工艺
microfine disseminated gold ore
arsenic and carbonaceous
middlings diversion
flotation
environment-friendly reagent
joint process
