含锰高品位银矿中银的物相分析  

Phase analysis of silver in a dense deposit of silver and manganese

作　　者：阮贵华[1] 廖祝华[1] 王旭宏[1] 

机构地区：[1]桂林工学院测试中心,广西桂林541004

出　　处：《桂林工学院学报》2003年第2期185-187,共3页Journal of Guilin University of Technology

摘　　要：介绍了一种针对含锰高品位银矿的化学物相分析方法,用3%乙酸铵-3%盐酸羟铵对矿石中的氧化锰首先进行浸出,再以系列分相溶剂对银进行化学浸出.结果表明:银与矿石中氧化锰矿物紧密共生,只有在锰矿物被溶解,暴露出银矿物后,银才会被浸出;大部分银以超显微分散态(硫化银占62.79%)存在,同时在少量的金属硫化物中也赋存着一部分银(占28.65%),角银矿和自然银极少.Phase analysis of silver in a dense deposit is studied in the experiment. After oxidation manganic minerals dissolved in CH3COONH4 3%- NH2OH ·HCl 3% solution, silver can be leached with phase dissolution reagents. It proves that silver is combined compactness with oxidation manganic minerals in this deposit. Silver is leached only after the manganese is dissolved in the solvent. Most silver ores in dispersive state exist in oxidation manganic minerals(62.79%), others exist in sulfide mineral(28.65%), and few or no silver chloride and natural silver.

关 键 词：矿石 银 锰 物相分析 

分 类 号：O658.6[理学—分析化学] P614.122[理学—化学]