甘肃某铅锌矿提升选矿指标试验研究  

Experimental Study on Beneficiation Index of a Lead-Zinc Mine in Gansu Province

作　　者：杨俊龙[1] 常亚明 王志丰[1] 郭艳华[1] YANG Junlong;CHANG Yaming;WANG Zhifeng;GUO Yanhua(Northwest Research Institute of Mining and Metallurgy,Baiyin 730900,China;Xihe County Jianyagou Mining Development Co.Ltd.,Longnan 746000,China)

机构地区：[1]西北矿冶研究院,甘肃白银730900 [2]西和县尖崖沟矿业发展有限公司,甘肃陇南746000

出　　处：《甘肃冶金》2023年第6期4-8,共5页Gansu Metallurgy

摘　　要：甘肃某铅锌矿由于矿石性质发生变化,生产指标也发生较大变化,该矿中Pb品位1.40%,Zn品位4.50%。试验研究表明:磨矿细度-0.074 mm占70%,D221为350 g/t,锌粗选硫酸铜为400 g/t,采用T15处理回水,能有效降低回水中的有害离子对指标的影响。闭路试验最终获得铅精矿中Pb品位61.58%,含Zn 5.59%,Pb回收率87.89%;锌精矿中Zn品位53.75%,含Pb 0.89%,Zn回收率95.11%的选矿指标。Due to the change of ore properties,the production index of a lead-zinc mine in Gansu Province has changed greatly.The grade of Pb and Zn in the mine is 1.40%and 4.50%.The experimental results show that the optimum grinding finness is-0.074 mm,D221350 g/t,zinc coarse copper sulfate 400 g/t,T15 treatment of backwater,can effectively reduce the influence of harmful ions in the backwater on the index.Lead concentrate with Pb grade of 61.58%,Zn 5.59%and Pb recovery of 87.89%was obtained by closed-circuit test.The grade of Zn in zinc concentrate is 53.75%,the content of Pb is 0.89%,and the recovery rate of Zn is 95.11%.

关 键 词：铅锌矿 D221 回水 回收率 浮选 优先浮选 

分 类 号：TD952[矿业工程—选矿]