内蒙古某金矿尾矿综合回收试验研究  

Test Research on Comprehensive Recovery of Tailings From a Certain Gold Mine in Inner Mongolia

作　　者：陈小辉 宋超 张太雄 宋洪旺 CHEN Xiaohui;SONG Chao;ZHANG Taixiong;SONG Hongwang

机构地区：[1]内蒙古金陶股份有限公司,内蒙古赤峰024000 [2]长春黄金研究院有限公司,吉林长春130000 [3]希尔威金属矿业有限公司,北京100020

出　　处：《中国矿山工程》2022年第2期35-42,共8页China Mine Engineering

摘　　要：内蒙古某金矿含氰尾矿中金的品位0.7 g/t,通过选矿试验确定采用“氰化尾矿-预处理-有价元素回收利用-利用尾矿鉴别-合规处置”路线进行氰化尾矿的回收利用,利用后尾矿经鉴别并确定为一般固废性质后,排入按照一般固废贮存处置要求建设的尾矿库内堆存处置。试验结果表明:氰化尾矿调浆液相中氰化物浓度≤10 mg/L时,CG101-A与CG101-B加药量分别为0.5 g/L和0.6 g/L。浮选工艺流程可获得金品位5.78 g/t金精矿,回收率62.99%,选别指标理想,为该类金尾矿二次资源综合回收提供了一定参考借鉴。The gold content of the cyanogen-bearing tailings from a certain gold mine in Inner Mongolia is 0.7 g/t;in order to comprehensively recover the valuable gold in the tailings,based on the study of process mineralogy,through mineral processing test,the determination is made that the process route of Cyanide Tailings-Pretreatment-Valuable Elements Recycling-Identification with Tailings-Qualified Disposal is used to recycle the cyanide tailings.The tailings after treatment that are identified as general solid waste are discharged into the tailings pond to be stockpiled and disposed,the tailings pond is built according to the requirements for disposing general solid wastes.The test results show that when the cyanide concentration in the cyanide tailings slurring phase is≤10 mg/L,the reagents of CG101-A and CG101-B are added with the amount of 0.5 g/L and 0.6 g/L respectively,which can lower the cyanide in the cyanide tailings slurring phase and toxic leachate to below 0.5 mg/L.By using flotation process flow,the gold concentrate of 5.78 g/t Au-grade and of 62.99%recovery can be obtained;the separation indicators are ideal,which can provide a certain reference for the comprehensive recovery of the secondary resources of this type of gold tailings.

关 键 词：氰化尾矿 回收 浮选 预处理 联合流程 

分 类 号：TD953[矿业工程—选矿]