基于BPMA的胶东某含金矿石可选性试验研究  

Experimental study on selectability of gold ore in Jiaodong based on BPMA

作　　者：赵永强 王昆[1] 许道学 高瑞琢 孙体昌[3] 张峥[1] 徐承焱[3] ZHAO Yongqiang;WANG Kun;XU Daoxue;GAO Ruizhuo;SUN Tichang;ZHANG Zheng;XU Chengyan(School of Energy and Mining Engineering,Shandong University of Science and Technology,Qingdao 266590,China;Qingdao Jinxing Mining Co.,Ltd.,Qingdao 266748,China;School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]山东科技大学能源与矿业工程学院,青岛266590 [2]青岛金星矿业股份有限公司,青岛266748 [3]北京科技大学土木与资源工程学院,北京100083

出　　处：《中国有色金属学报》2024年第8期2819-2830,共12页The Chinese Journal of Nonferrous Metals

基　　金：山东省高等学校青创科技支持计划项目(2023KJ303)。

摘　　要：由于选矿现场对胶东某石英脉型含金矿石的矿物组成、金的赋存状态均缺乏了解,导致后续浮选过程中存在精矿品位和回收率较低等问题。为最大限度地提高金回收率,本文利用化学分析、XRD分析、BPMA等方法,重点研究了该含金矿石的化学成分、矿物组成以及金的赋存状态等工艺矿物学特性,并通过矿石可选性试验研究,确定最佳生产工艺流程及参数。结果表明:该矿样金品位为3.09 g/t,硫含量为11.38%;金属矿物主要为黄铁矿和少量磁黄铁矿,含量分别为22.83%和0.68%;脉石矿物主要为石英,含量为60.03%;金矿物主要以包裹金和连生金的形式存在,少量被石英、方铅矿等包裹。在丁基黄药和黑药用量分别为120 g/t、1 g/t以及2^(#)油用量为45 g/t的条件下,最终获得的精矿金品位为50.42 g/t,金回收率为95.65%,满足了选厂浮选产品指标要求。研究结果对进一步提高该类型矿石选矿指标、优化生产工艺流程及参数具有指导意义。Due to the lack of understanding of the mineral composition and gold occurrence state of gold ore in Jiaodong at the beneficiation site,there are problems such as low concentrate grade and recovery rate in the subsequent flotation process.In order to maximize the gold recovery rate,this article used chemical analysis,XRD analysis,BPMA and other methods to focus on studying the chemical composition,mineral composition,and mineralogical characteristics of the gold bearing ore,as well as the occurrence state of gold.Through washability experiments,the optimal production process and parameters were determined.The results show that the gold grade of the ore sample is 3.09 g/t,with a sulfur content of 11.38%;The main metallic minerals are pyrite and a small amount of magnetite,with contents of 22.83%and 0.68%,respectively;The main mineral of gangue is quartz,with a content of 60.03%;Gold minerals mainly exist in the form of encapsulated gold and associated gold,with a small amount being encapsulated by quartz,galena,and other minerals.Under the conditions of using 120 g/t of butyl yellow medicine and 1 g/t of black medicine,and 45 g/t of 2^(#)oil,the final gold grade of the concentrate obtained is 50.42 g/t,with a gold recovery rate of 95.65%,meeting the requirements of the flotation product indicators in the beneficiation plant.The research results have guiding significance for further improving the beneficiation indicators of this type of ore,optimizing the production process and parameters.

关 键 词：含金矿石 BPMA 浮选 黄铁矿 

分 类 号：TD952[矿业工程—选矿]