某难选氧化金铜矿石选矿试验研究  

Experimental study on the beneficiation of a refractory oxidized gold and copper ore

作　　者：杨国成 于鸿宾 郝福来 王衡嵩 Yang Guocheng;Yu Hongbin;Hao Fulai;Wang Hengsong(Liaoning Erdaogou Gold Industry Co.,Ltd.;Changchun Gold Research Institute Co.,Ltd.)

机构地区：[1]辽宁二道沟黄金矿业有限责任公司,122525 [2]长春黄金研究院有限公司

出　　处：《黄金》2021年第12期53-58,共6页Gold

基　　金：中国黄金集团有限公司重点科研计划项目(ZJKJ-2017-XY001)。

摘　　要：针对吉尔吉斯斯坦某难选氧化金铜矿石铜氧化率高、易泥化、铜矿物孔雀石含硅且含有大量结合铜的特性,开展了选矿试验研究。结果表明:采用重选-重尾四次粗选、粗三粗四预选并抛尾、三次扫选、三次精选流程,可获得金品位1386.41 g/t的重选精矿,铜、金品位分别为23.52%、47.15 g/t的浮选精矿,重选+浮选铜、金总回收率分别为45.71%和71.95%。采用矿泥分散剂CG611可有效解决易泥化脉石矿物对精矿品位的影响,活化剂CG601可有效提高铜回收率,异戊基黄药在保证铜回收率的同时,可强化对金矿物的回收。研究结果可为该氧化金铜矿石资源的开发利用提供技术依据。A refractory oxidized gold and copper ore in Kyrgyzstan has high oxidation rate of copper and is prone to sliming.The copper mineral malachite contains silicon and a large amount of bound copper.Experimental study of beneficiation based on these properties was carried out.The results show that the process of gravity separation-four times roughing gravity tailings,pre-concentration in roughing 3 and 4 and tailings removal,three times scavenging and cleaning of gravity tailings can obtain the gravity concentrates with gold grade 1386.41 g/t,the flotation concentrates with copper grade 23.52%and gold grade 47.15 g/t,the total copper and gold recovery rates of gravity separation+flotation are 45.71%and 71.95%respectively.The effect of the easily sliming gangue minerals on the concentrate grade can be effectively solved by using CG611 ore slime dispersant,the copper recovery can be effectively improved by using CG601 activator,and isoamyl xanthate can not only ensure the recovery rate of copper,but also enhance the recovery of gold minerals.The research results can provide technical references for the development of the oxidized gold copper ore resources.

关 键 词：金铜矿 氧化铜 结合铜 泥化 重选 浮选 抛尾 

分 类 号：TD952[矿业工程—选矿]