俄罗斯某铜铅锌多金属矿超细磨工艺应用实践  

Ultra-fine Regrinding Process Application in a Copper-lead-zinc Polymetallic Mine in Russia

作　　者：鲁军[1,2] Lu Jun(Zijin Mining Group Co.,Ltd.,Shanghang 364200,China;School of Civil and Resources Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]紫金矿业集团股份有限公司,福建上杭364200 [2]北京科技大学土木与资源工程学院,北京100083

出　　处：《金属矿山》2020年第7期89-93,共5页Metal Mine

摘　　要：俄罗斯克孜尔—喀什特克铜铅锌多金属硫化矿金属矿物嵌布粒度微细,采用原单一球磨机对铜铅混合粗精矿进行再磨,难以满足对矿物解离度的要求。因此,在矿石性质分析和实验室小试的基础上,对再磨系统进行了现场工艺优化与生产实践。将球磨机与超细磨机串联使用,即新增超细磨机对原流程中球磨机产品经旋流器分级后的溢流进行开路再磨再选,满足了最终产品P80粒径小于10μm的工艺要求,提高了矿石中金属矿物的单体解离度,从而更易分选。新再磨流程平稳运行后,对稳定产品质量作用明显。对比改造前,铅回收率提高16.84%,锌回收率提高4.96%,铜回收率提高2.70%。按全年处理100万t矿量计算,新增锌金属量4 960 t/a,新增铅金属量2 910 t/a,新增铜金属量208 t/a。按当前产品价格计算,每年可为企业多创造利润12 000万元,经济效益显著。Kizil-Kashiturk copper-lead-zinc polymetallic sulphide ore in Russia disseminated in micro-fine size andthe process with the original single ball mill for regrinding the copper-lead bulk roughing concentrate is difficult to meet therequirement of high mineral liberation. Therefore,the regrinding system transform and production practice was carried outbased on mineralogy properties analysis and laboratory scale. By series connection of ball mill and ultra-fine mill,that isadding a new ultra-fine mill to regrind the overflow of the hydrocyclone matched with the original ball mill,final regrindingproducts of P80 size less than 10 μm was obtained,indicated that the liberation of metal minerals in ores is greatly im-proved,which makes it conducive to sorting. After stable running of the new regrinding process,it has obvious effect onproduct quality stabilizing. Compared with the previous system,the transfomation brought out the increase of recovery ratewith Pb 16.84%,Zn 4.96% and Cu 2.70%. According to the annual processing of one million tons of ore,the increase ofmetal amounts with Zn 4 960 t/a,Pb 2 910 t/a,and Cu 208 t/a was realized,which could create a newly added profit of 120 million yuan for enterprises based on the calculation product price.

关 键 词：铜铅锌多金属硫化矿 铜铅混浮粗精矿 超细磨 再磨流程改造 

分 类 号：TD952[矿业工程—选矿] TD921.4