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
赵福财 1栾东武 1丁雨波 2李玉玺 1桑胜华 2马鹏程1
作者信息
- 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
- 折叠
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.
Abstract
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 car-ried out on gravity separation,flotation,regrinding and re-separation of middlings,and cyanide leaching of flotation tail-ings,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 reach50.05 g/t,with a gold compre-hensive 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Key words
arsenic-containing/antimony-containing/refractory gold ore/cyanide leaching/Nelson gravity separa-tion引用本文复制引用
基金项目
国家重点研发计划(2018YFC1902003)
出版年
2024
NETL
NSTL
万方数据