贵州某卡林型金矿矿石的热重分析试验  

Thermal gravimetric experimental analysis of a Carlin-type refractory gold ore in Guizhou Province

作　　者：唐道文[1] 王锐[1] 杨聪[1] 晋克勤[1] 

机构地区：[1]贵州大学材料与冶金学院

出　　处：《黄金》2012年第12期47-49,共3页Gold

基　　金：贵州省科学技术基金项目(黔科合J字[2010]2003)

摘　　要：在空气条件下对贵州某卡林型金矿矿石进行热重试验分析,探究了硫化物及碳酸盐的热分解特性,确定了氧化焙烧的最佳温度及时间。试验结果表明,焙烧温度为600～700℃,焙烧1.5 h,金氰化浸出率可提高到86%。这为贵州卡林型金矿矿石的氧化预处理提供了重要的理论依据。The thermal gravimetric analysis was conducted on a Carlin-type refractory gold mine of Guizhou province in air ambiance in order to explore thermal decomposition characteristics of sulfides and carbonate in ore and to determine the optimum oxidation roasting temperature and time. Test results show that at temperature of 600 - 700℃ and with roasting time of 1.5 h, gold leaching rate can be increased to 86 %. The test results have provided important theoretical reference to the oxidation pretreatment operation of the refractory Carlin-type gold ores.

关 键 词：卡林型金矿 热重分析 热重(TG)曲线 微分热重(DTG)曲线 

分 类 号：TD921[矿业工程—选矿]