黑龙江某低品位难选铜钼矿的综合利用  

Comprehensive Utilization on a Low-grade Rebellious Copper-Molybdenum Ore in Heilongjiang

作　　者：李兆龙 杨晓峰 解明亮 周潼 赵旭 LI Zhaolong;YANG Xiaofeng;XIE Mingliang;ZHOU Tong;ZHAO Xu(Yichun Luming Mining Co.,Ltd.,Yichun 152500,Heilongjiang,China;School of Mining Engineering,Heilongjiang University of Science and Technology,Harbin 150026,China)

机构地区：[1]伊春鹿鸣矿业有限公司,黑龙江伊春152500 [2]黑龙江科技大学矿业工程学院,哈尔滨150026

出　　处：《有色金属（选矿部分）》2024年第6期78-85,共8页Nonferrous Metals（Mineral Processing Section）

基　　金：黑龙江省属高等学校(学术骨干)科研项目(2020-KYYWF-0677)。

摘　　要：随着易选矿石日渐匮乏,难选矿石的开发利用亟待解决。黑龙江某钼矿企业所属矿区存有难选矿石,该矿石具有氧化率高、钼品位低、嵌布粒度不均匀、铜钼难分离等特点,多年来一直未能开采利用,造成了资源的极大浪费。该区域矿石中平均含钼0.033%、含铜0.014%,钼矿物主要以辉钼矿形式存在,嵌布粒度在0.01~0.50 mm,钼氧化率为18.89%。铜矿物主要以黄铜矿形式存在,嵌布粒度在0.005~0.15 mm。黄铜矿可浮性极好,采用常规抑制剂极难抑制,给钼精选作业带来难度。根据钼矿物嵌布不均匀、铜矿物粒度偏细的特点,制定了“粗磨粗选+细磨精选”的工艺流程;针对黄铜矿可浮性好、难抑制的特点,重点考察了多种铜抑制剂对含铜矿物的抑制效果。研究发现,主要成分为羟基化黄原酸盐的新型药剂HL120,具有亲水、亲固基团,更容易吸附在黄铜矿表面,能够更加有效地抑制黄铜矿。在钼精选阶段采用HL120强化黄铜矿的抑制,最终获得了钼精选含Mo 48.87%、含铜0.26%、钼回收率82.43%的较好指标。对钼精选尾矿进行再选,获得了含Cu 16.88%、作业回收率为81.27%、原矿回收率47.66%的铜精矿指标。该低品位难选矿石得到了有效利用,企业的经济效益明显提升。With the increasing scarcity of easy separation ores,utilization of refractory ores need to be solved urgently.A difficult-to-beneficiate ore in Heilongjiang has the features of high oxidation rate,low-grade of molybdenum,uneven grain size distribution,and difficult in separation of copper and molybdenum.The ore has not been exploited for many years,caused a great waste of resources.The lowgrade molybdenum ore contains 0.033%molybdenum and 0.014%copper.The molybdenum minerals in the ore mainly exist in the form of molybdenite,grain size is 0.01-0.50mm,the average oxidation rate is 18.89%.Copper minerals mainly exist in the form of chalcopyrite,grain size is 0.005-0.15mm,the floatability of chalcopyrite is excellent,and the molybdenum concentration is difficult.According to the characteristics of the uneven size distribution of molybdenum minerals and fine particle size of copper minerals,aprocess flowsheet of“coarse grinding and roughing+fine grinding and cleaning”was designed,regarding chalcopyrite has the characteristics of good floatability and is difficult to inhibit.Inhibition effect of various copper depressants on copper-bearing minerals was investigated.The research find that new agent HL120has the main component of hydroxylated xanthate with hydrophilic and hydrophilic groups,it is easier to adsorb on the surface of chalcopyrite,which can inhibit chalcopyrite more effectively.Using HL120to inhibit chalcopyrite in molybdenum flotation,a molybdenum concentrate containing 48.87%Mo and 0.26%Cu with a molybdenum recovery of 82.43%was finally obtained.Study on flotation of the molybdenum tailings obtained a copper concentrate containing 16.88%Cu with copper recovery 81.27%for the operation and 47.66%for the raw ore.The low-grade ore was effectively utilized,and the economic benefits of the enterprise were significantly improved.

关 键 词：铜钼矿 低品位 嵌布粒度 抑制剂 

分 类 号：TD952[矿业工程—选矿]