某金矿尾矿再磨再选半工业试验研究
Experimental study on semi-industrial regrinding and re-separation of tailings in a gold mine
姜绍军 1陈晓东 2栾晓刚 1刘金松 1沈俊宏 2王荣刚 1邢岚军2
作者信息
- 1. 甘肃省合作早子沟金矿有限责任公司
- 2. 浙江艾领创矿业科技有限公司
- 折叠
摘要
某金矿矿石性质复杂,泥化严重,氧化率高,金嵌布粒度微细,载金矿物种类多,硬度及解离度差异大,属复杂难处理金矿,经重选+阶段磨矿阶段浮选联合选别流程,尾矿平均金品位0.8 g/t,金大部分以包裹金形式损失.采用艾砂磨机+微泡浮选机对现场尾矿进行高效细磨细选,取得了精矿金品位16 g/t、金回收率30%以上的选别指标.该研究成果部分已经应用于生产,并取得了显著的经济效益,为复杂难处理金矿开发及尾矿综合利用提供了一条有效途径.
Abstract
The ore of a gold mine is characterized by complexity,with severe sliming,high oxidation rate,fine gold particle size,and a variety of gold-bearing minerals in the raw ores.Combined with significant differences in hardness and dissociation,the ore belongs to a complex refractory gold ore.Despite a combination process of gravity separation+stage grinding and stage flotation,the average gold grade in the tailings remains 0.8 g/t,with most of the gold lost in encapsulated form.Utilizing an IsaMill machine and a microbubble flotation machine for efficient fine grinding and separation of the tailings has resulted in a concentrate grade of 16 g/t and a recovery rate of over 30%,meeting the separation indicators.Some of the research findings have already been applied in production,yielding significant eco-nomic benefits and providing an effective approach for the development and comprehensive utilization of complex refractory ores and tailings.
关键词
尾矿再选/细磨/细粒浮选/艾砂磨机/微泡浮选Key words
tailings re-separation/fine grinding/fine particle flotation/IsaMill machine/microbubble flotation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据