某高度氧化型银矿石工艺矿物学研究

通过岩矿鉴定、重砂鉴定、X射线分析、光谱分析及化学分析等 ,对原矿进行了系统而全面的工艺矿物学研究。研究结果表明 ,该矿为含砷 (锑 )高度氧化型银矿。原矿中银矿物平均嵌布粒度为 0 .0 468mm ,其中呈微细粒嵌布的银矿物含量高达 40 .99%。原矿中自然系列银矿物以粒间嵌布为主 ,其次为包裹嵌布 ,少量为裂隙嵌布。包裹于脉石和褐铁矿中的自然银相对含量较大 ,合计为 3 9.76%,这部分自然银大都呈微细粒嵌布 ,在常规破碎磨矿过程中难以充分实现单体解离 ,因而难以得到有效回收

THE RESEARCH OF PROCESS MINERALOGY CERTAIN HIGHLY OXIDIZED SILVER ORE

By means of examination of rock and ore and heavy sand, X-ray analysis, spectral analysis and chemical analysis, process mineralogy of run-of-mine ore is researched systemically and roundly. The research results show that the run-of-mine ore belongs to highly oxidized silver ore containing As and Sb. The average dissemination size of silver minerals of run-of-mine ore is 0.0468mm, and the content of silver minerals disseminated in subsieve size is 40.99%. The natural silver minerals of run-of-mine ore disseminated mainly in inter-particle, secondly in inclusion, and a little in flaw. The natural silver included in gangue and limonite is relatively high and values totally 39.76%. Most of the inclusion silver minerals disseminated in subsieve size , and are difficult to be liberated fully by common crushing and grinding, and so are difficult to be recovered effectively.