矿物自动定量分析系统在金的赋存状态研究中的应用  

Application of Automated Quantitative Mineralogy System in the Deportment Study of Low-grade and Fine-grained Gold

作　　者：温利刚 贾木欣 付强 蔡明明 王清 WEN Ligang;JIA Muxin;FU Qiang;CAI Mingming;WANG Qing(BGRIMM Technology Group,Beijing 100160,China;State Key Laboratory of Process Automation in Mining&Metallurgy,Beijing 102628,China;Beijing Key Laboratory of Process Automation in Mining&Metallurgy,Beijing 102628,China;Metallurgical Laboratory Branch of Shandong Gold Mining Technology Co.,Ltd.,Yantai 261441,Shandong,China)

机构地区：[1]矿冶科技集团有限公司,北京100160 [2]矿冶过程自动控制技术国家重点实验室,北京102628 [3]矿冶过程自动控制技术北京市重点实验室,北京102628 [4]山东黄金矿业科技有限公司选冶实验室分公司,山东烟台261441

出　　处：《有色金属（选矿部分）》2022年第4期1-8,共8页Nonferrous Metals（Mineral Processing Section）

基　　金：国家重点研发计划项目(2020YFE0201100,2021YFC2903101);甘肃省科技计划项目(20ZD7WC010);国家科技支撑计划项目(2012BAB19B01);国家自然科学基金资助项目(51734005)。

摘　　要：为查明金品位2.7g/t的胶东某金矿石中金的赋存状态,利用矿冶科技集团有限公司自主研发的矿物自动定量分析系统———工艺矿物学自动分析仪(BPMA),结合扫描电子显微镜(SEM)、能谱仪(EDS)、X射线衍射(XRD)、化学物相分析等综合手段,系统研究了金矿石的工艺矿物学特征,查明了矿石的矿物组成、嵌布特征、粒度分布,详细测定了矿石中金矿物的种类、金与载体矿物之间的镶嵌关系、金矿物的粒度分布、金在矿石中的赋存状态等关键参数,并阐明了影响矿石中金回收的矿物学因素,为选矿流程设计与优化提供可靠、有效的参考建议。BPMA-SEM-EDS是一种高效、可靠、准确分析矿石中金赋存状态的方法。In order to define the gold occurrence state of a gold ore with low-grade Au 2.7g/t from northwestern Jiaodong Peninsula,Shandong province,systemic process mineralogy research was carried out with instruments such as scanning electron microscopy(SEM),energy dispersive X-ray spectrometers(EDS),X-ray diffraction(XRD),chemical phase analysis and the BGRIMM Process Mineralogy Analyzer(BPMA),which was the first SEM-based automated mineralogy(AM)system in China,developed independently by the BGRIMM Technology Group(China).The various quantitative mineralogical data such as mineral compositions,mineral associations,and grain size distribution of main sulfide minerals were analyzed,and the type of gold in the ore,inlay state and the size of gold minerals,the mode of gold occurrence were identified.Some mineralogical factors affecting the gold ore recovery were described,and an optimized plan was given.BPMA-SEM-EDS in situ analysis was an efficient,reliable and accurate method for the investigation of fine-grained gold minerals.

关 键 词：矿物自动定量分析 金赋存状态 工艺矿物学 微细粒金 BPMA 

分 类 号：P618.51[天文地球—矿床学] P575[天文地球—地质学] TD912[矿业工程—选矿]