甘肃某含砷锑难处理金矿选矿试验研究  

Experiment study on dressing of a refractory ore containing arsenic and antimony in Gansu

作　　者：赵福财 栾东武 丁雨波 李玉玺 桑胜华 马鹏程 Zhao Fucai;Luan Dongwu;Ding Yubo;Li Yuxi;Sang Shenghua;Ma Pengcheng(Shandong Guohuan Solid Waste Innovation Technology Center Co.,Ltd.;Gansu Zhaojin Precious Metal Smelting Co.,Ltd.)

机构地区：[1]山东国环固废创新科技中心有限公司 [2]甘肃招金贵金属冶炼有限公司

出　　处：《黄金》2024年第6期45-49,54,共6页Gold

基　　金：国家重点研发计划项目(2018YFC1902003)。

摘　　要：针对甘肃某含砷锑难处理金矿现场浮选过程中选别指标低的问题,开展了矿石工艺矿物学研究。在此基础上,进行了重选、浮选、中矿再磨再选、尾矿氰化浸出等试验研究,最终形成了尼尔森重选—中矿再磨再选—尾矿氰化浸出的联合工艺流程。采用该流程,精矿金品位可达50.05 g/t,金综合回收率可达93.89%。较单一浮选工艺流程,该联合工艺流程的金回收率提高30百分点以上,为现场工艺流程改造提供了可行的技术方案。In response to the low separation index during the on-site flotation process of a refractory ore containing arsenic and antimony in Gansu,a study on ore process mineralogy was conducted.Based on this,experiments were carried out on gravity separation,flotation,regrinding and re-separation of middlings,and cyanide leaching of flotation tailings,ultimately forming a combined process of Nelson gravity separation,middlings regrinding and re-separation,and tailings cyanide leaching.Using this process,the gold grade of the concentrate can reach 50.05 g/t,with a gold comprehensive recovery rate of 93.89%.Compared to the single flotation process,the gold recovery rate of this combined process has increased by more than 30%,providing a feasible technical solution for on-site process optimization.

关 键 词：含砷 含锑 难处理金矿 氰化浸出 尼尔森重选 

分 类 号：TD953[矿业工程—选矿]