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.
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.)
出处
《黄金》
CAS
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)。
关键词
含砷
含锑
难处理金矿
氰化浸出
尼尔森重选
arsenic-containing
antimony-containing
refractory gold ore
cyanide leaching
Nelson gravity separation
