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。
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 economic benefits and providing an effective approach for the development and comprehensive utilization of complex refractory ores and tailings.
作者
姜绍军
陈晓东
栾晓刚
刘金松
沈俊宏
王荣刚
邢岚军
Jiang Shaojun;Chen Xiaodong;Luan Xiaogang;Liu Jinsong;Shen Junhong;Wang Ronggang;Xing Lanjun(Gansu Hezuo Zaozigou Gold Mining Co.,Ltd.;Zhejiang ALC Minerals Technology Co.,Ltd.)
出处
《黄金》
CAS
2024年第6期55-59,共5页
Gold
关键词
尾矿再选
细磨
细粒浮选
艾砂磨机
微泡浮选
tailings re-separation
fine grinding
fine particle flotation
IsaMill machine
microbubble flotation
