摘要
采用X射线荧光分析、碳物相分析、偏光显微镜观察、扫描电镜测试等手段对山西左权石墨矿进行了详细的工艺矿物学研究。结果表明该地区石墨矿固定碳含量为4.93%,杂质成分以SiO_2,Al_2O_3,Fe_2O_3为主。目的矿物石墨含量约为6%,主要脉石矿物云母约45%,石英30%,长石5%,黄铁矿5%,碳酸盐矿物5%。该石墨矿为微细浸染的不等粒嵌布矿石,颗粒呈微细鳞片状或粉尘状,多数夹杂于云母、石英颗粒中间。石墨单体片径以0. 5～5μm为主,少见5～10μm,不易单体解离,属难选石墨矿。
A research on the process mineralogy of fine particles graphite mine in Sui county of Hubei province had been conducted with the usage of the X-ray fluorescence analysis,carbon phase analysis, polarizing microscope observation and scanning electron microscopy.The result show that the fixed carbon content of the graphite ore is 4.93%, the impurity composition is mainly consist of silicon dioxide,aluminum oxide and iron oxide.The content of graphite in the ore is about 6%. The main gangue minerals contain 45% mica, 30% quartz, 5% feldspar, 5% pyrite and 5% carbonate minerals. The graphite exist with the form of fine-disseminated and non-grain embedded in the ore.The particles which mostly mixed in the mica and quartz are slightly scaly or dusty.The mainly monomer diameter of graphite is less than 5μm.As the refractory ore,it is difficult for the graphite to dissociation.
作者
张大海
ZHANG Da-hai(Shanxi Institute of Metallurgical Geology, Taiyuan 443003)
出处
《矿产勘查》
2019年第2期253-256,共4页
Mineral Exploration
关键词
石墨
工艺矿物学
微细
graphite
process mineralogy
fine particles
