某金矿石提金工艺试验研究  

Experimental study on the ore-dressing process of a gold ore

作　　者：匡晨 李黎婷 张恒星 郭金溢 迟晓鹏[3] 池荷婷 Kuang Chen;Li Liting;Zhang Hengxing;Guo Jinyi;Chi Xiaopeng;Chi Heting(State Key Laboratory for Comprehensive Utilization of Low-grade Refractory Gold Ores;Xiamen Zijin Mining&Metallurgy Technology Co.,Ltd.;Zijin School of Mining,Fuzhou University)

机构地区：[1]低品位难处理黄金资源综合利用国家重点实验室 [2]厦门紫金矿冶技术有限公司 [3]福州大学紫金矿业学院

出　　处：《黄金》2022年第8期70-73,共4页Gold

摘　　要：某金矿石中金主要以硫化矿物包裹金形式存在,分布率为55.71%,其次为裸露金,裸露金主要为连生金,仅见少量解离金。针对该矿石特性,进行了全泥氰化浸出、预处理—氰化浸出工艺对比,主要考察了焙烧氧化、酸性加压氧化、碱性常压加温氧化3种预处理工艺。结果表明:全泥氰化浸出金浸出率仅为29.2%,预处理—氰化浸出可获得较高的金浸出率;相比其他2种预处理工艺,焙烧氧化预处理工艺综合效果相对较好,焙烧氧化—细磨—氰化浸出工艺金浸出率为90.8%。The gold in a gold ore is dominated by encased gold in sulfide minerals,accounting for 55.71%,followed by exposed gold.Exposed gold is mainly associated gold and dissociated gold is rarely seen.According to the ore property,the study compared all-sliming cyanidation leaching and pretreament-cyanidation leaching processes,mainly investigating 3 pretreatment processes namely roasting oxidation,acidic pressure oxidation,alkaline atmospheric pressure heating oxidation.The results show that the gold leaching rate by all-sliming cyanidation leaching is only 29.2%,and higher gold leaching rate can be obtained by pretreatment-cyanidation leaching;compared to the other 2 pretreatment processes,roasting oxidation pretreatment process has a better comprehensive effect and the gold leaching rate of roasting oxidation-fine grinding-cyanidation leaching process is 90.8%.

关 键 词：难处理金矿石 预处理 焙烧氧化 酸性加压氧化 碱性常压氧化 全泥氰化 

分 类 号：TD953[矿业工程—选矿]