某难处理金矿的工艺矿物学和提取冶金学研究  

Application of Process Mineralogy and Research of Extraction Metallurgy in Refractory Gold Process Selection

作　　者：丁文涛 蔡创开 许晓阳 郭金溢 游天寿 

机构地区：[1]厦门紫金矿冶技术有限公司,福建厦门361101

出　　处：《矿产综合利用》2016年第2期26-28,33,共4页Multipurpose Utilization of Mineral Resources

基　　金：国家科技支撑计划课题"高砷高碳微细粒金矿选冶关键技术研究"(2012BAB10B08)资助

摘　　要：采用常规氰化、氰化渣再磨-氰化、超细磨-预处理-氰化三种工艺处理甘肃某高硫高砷难处理金精矿,发现金浸出率随着精矿粒度的减小而逐渐升高,从直接氰化的55~59%到再磨后的68.3%,超细磨后达到82.39%。通过工艺矿物学分析氰化渣的物相可知,细磨可以使部分硫化矿包裹的金解离,使其得以被氰化,超细磨可以使大部分硫化矿包裹打开,石英包裹的金在三种工艺下都不能被浸出。Three processes including conventional cyanide leaching,cyanide leach residue grinding-cyaniding and ultrafine grinding-pretreatment-cyaniding were used to treat a high sulfur and high arsenic refractory gold ore in north-west China. The leaching rate of gold was 55% ~ 59% in conventional cyanide leaching and 68. 3% after regrinding,especially in the ultrafine grinding process it reached 82. 39%. Process mineralogy study on cyanide slag phase indicates that part of sulfide ore could be leached after regrinding,while most of sulfide ore could be leached after ultrafine grinding. In the three processes,gold locked in quartz cannot be extracted.

关 键 词：难处理金矿 工艺矿物学 超细磨 提取冶金学 

分 类 号：TD989[矿业工程—选矿] TF831[冶金工程—有色金属冶金]