摘要
本文利用矿相显微镜、电感耦合等离子体发射光谱(ICP-AES)、扫描电子显微镜(SEM)、X射线能谱探针(EDS)等手段对某氧化铅锌矿的工艺矿物学特征进行了研究,主要分析了铜铅锌的赋存状态,重点讨论了影响白铅矿回收的矿物学因素。原矿化学分析结果显示,矿石含Pb4.84%,Zn1.46%,Cu1.41%,同时含有0.27 g/t的Au和73.1 g/t的Ag;岩矿鉴定结果表明,金属硫化物矿物黄铁矿含量11.28%,白铅矿含量6.24%,方铅矿1.34%,闪锌矿含量2.63%,黄铜矿和辉铜矿总量3.97%,蓝铜矿为0.01%。脉石矿物主要为白云石(44.88%)、石英(13.11%)和黑云母(9.33%);矿物嵌布粒度统计结果表明,矿石中白铅矿交代方铅矿,多与其他矿物相互包裹,解离非常困难,而闪锌矿、黄铜矿和辉铜矿则较容易解离;元素平衡配分结果表明,铅元素主要分配在白铅矿中,达到了80.71%;方铅矿占19.33%;锌在闪锌矿中的配分达到了100%;铜元素主要分布在黄铜矿和辉铜矿中,分布率分别为49.92%,49.51%。在综合铅锌选矿研究进展的基础上,结合矿石整体性质,指出"氧化铅矿物和脉石的分离"这一选铅核心问题。最后,建议原则流程:铜锌混合浮选-浮方铅矿-浮硫-强化浮选白铅矿。
The process mineralogy of an oxidized lead-zinc ore in Hanyuan, Sichuan was studied by optical microscope, ICP-AES, SEM, EDS in this paper. This research focuses on the occurrence of Cu, Pb, Zn and mineralogy factors that influence the cerussite recycle. The chemical analysis results indicate that the raw ore contains 4. 84% Pb, 1.46%Zn,1.41%Cu,0. 27 g/t Au and 73. 1 g/t Ag. The contents of sulfide minerals are as ~follows：ll. 28% py- rite, 6. 24% cerussite, 1.34% galena, 2. 63% sphalerite, 3.97% chalcopyrite and chalcocite, 0. 01% azurite. The gangue minerals consist of 44. 88 % dolomite, 13.11% quartz and 9. 33 % biotite. The statistical results of the process particle size show that cerussite is difficult to be separated because of the complex dissemination relationship be- tween the cerussite and the other minerals, while sphalerite, chalcopyrite and chalcocite are relatively easier to be separated. The equilibrium assignment results of major elements indicate that 80. 71% and 19. 33% Pb respectively exist in cerussite and galena, all of Zn exists in sphalerite ,49. 92% and 49.51% Cu respectively exist in chalcopyrite and chalcocite. Base on the comprehensive researhes of the lead-zinc ore dressing and the mineral characteristics of ore, it is pointed out that separating the plumbum oxide minerals from gangue is the effective way to concentrate Pb. At last,we suggest that the principle process should be Cu-Pb flotation-galena flotation-sulfide flotation-intensify cerussite flotation.
出处
《矿产综合利用》
CAS
北大核心
2016年第3期76-79,共4页
Multipurpose Utilization of Mineral Resources
关键词
氧化铅锌矿
工艺矿物学
赋存状态
难选原因
Oxidized lead-zinc ores
Process mineralogy
Occurrence station
Main reasons of being difficult to separate.
