山东某金矿浮选尾矿工艺矿物学  

Study on the Process Mineralogy for the Flotation Tailings of a Gold Mine in Shandong Province

作　　者：吴凯 马英强[2] 王海龙 董鸿良 任瑞辉 王淑新 WU Kai;MA Yingqiang;WANG Hailong;DONG Hongliang;REN Ruihui;WANG Shuxin(Yantai Gold College and Environmental and Materials Engineering Department,Yantai 265400,Shandong,China;School of Zijin Geology and Mining,Fuzhou University,Fuzhou 350108,Fujian,China;Shandong Yantai Xintai Gold Mining Industry Co.,Ltd.,Yantai 265400,Shandong,China)

机构地区：[1]烟台黄金职业学院环境与材料工程系,山东烟台265400 [2]福州大学紫金地质与矿业学院,福建福州350108 [3]山东烟台鑫泰黄金矿业有限公司,山东烟台265400

出　　处：《矿产综合利用》2024年第5期71-75,共5页Multipurpose Utilization of Mineral Resources

基　　金：福建省自然科学基金项目(2019J01253)。

摘　　要：这是一篇工艺矿物学领域的论文。山东某金矿石含金2.0 g/t,含硫1.56%,属于典型低硫含金矿石。选厂采用浮选工艺回收金,金的回收率为90%,尾矿金品位0.17 g/t。为进一步降低尾矿中金的流失,提高浮选指标,采用MLA结合传统工艺矿物学手段查明金的流失原因。研究表明:主要的金属矿物为磁黄铁矿和黄铁矿,脉石矿物主要为长石和石英;脉石连生金及脉石包裹金占77.29%,粒度主要分布在-0.01 mm,这部分采用浮选工艺很难回收;金属硫化物连生金、金属硫化物包裹金及单体金占22.71%,流失不合理。基于尾矿工艺矿物学分析,下一步应该重点研究磨矿分级,降低有用矿物过磨程度,达到提高浮选指标的目的。This is anarticle in the field of process mineralogy.The grade of gold and sulfur in a gold mine from Shandong Province was 2.0 g/t and 1.56%respectively,which was a typical gold bearing ore with low sulfur.There covery of gold was made by flotation process in dressing mill,the gold recovery rate was 90%,the gold grade of tailings was 0.17 g/t.To reduce the loss of gold,and improve the flotation performance,MLA(Mineral Liberation Analyser)combined with frequently used process mineralogy method was used to ascertain the reasons for the loss of gold.The study show edpyrrhotite and pyritewere main metal licminerals,feldspar and quartz were a primary gangue miner.The gold locked to gangue and gold included with gangue accounted for 77.29%,of which the size distribution was below 0.01 mm,were difficult to recovered by flotation process.The gold locked or included by metal sulfides and monomer gold accounted for 22.71%,were unreasonable loss.Based on the analysis of process mineralogy of tailings:grinding and classification were the key to further work,which aimed to reduce degree of over grinding of useful minerals,achieve the improvement of beneficiation results.

关 键 词：浮选 金尾矿 工艺矿物学 MLA 

分 类 号：TD912[矿业工程—选矿]