镁质碳酸盐岩微细浸染型金矿原矿焙烧试验  

Study on Raw-ore Roasting of Magnesian Carbonate Rock Type Micro-disseminated Refractory Gold Deposits

作　　者：徐晓辉[1] 李云[1] 常耀超[1] 王云[1] 韦其晋[1] 胡一航 

机构地区：[1]北京矿冶研究总院,北京100160

出　　处：《有色金属（冶炼部分）》2016年第5期39-42,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家重大科学仪器设备开发专项(2012YQ22011905)

摘　　要：提出了原矿焙烧—氰化提金工艺处理某镁质碳酸盐岩微细浸染型金矿。试验表明,在原矿粒度-0.074mm占80%,焙烧温度650℃,焙烧时间1h,焙砂再磨粒度-0.038 mm占90%,NaCN用量3kg/t,液固比L/S=2,氰化时间36h的最佳条件下,渣含金降至1.92g/t,金浸出回收率达到94.90%。对300t/d规模原矿焙烧项目的经济评估表明该工艺经济效益显著。Raw ore roasting-cyaniding leaching process was proposed to treat magnesian carbonate rock type micro-disseminated refractory gold deposits. Gold content in residue can be decreased to 1.92 g/t with gold leaching rate of 94.90% under the optimum conditions including size of raw ore of --0. 074 mm of 80%, roasting temperature of 650℃, roasting time of 1h, calcining size of --0. 038 mm of 90%, NaCN dosage of 3kg/t, L/S=2, and leaching time of 36 h. Economical analysis on 300 t/d raw ore roasting-cyaniding leaching project indicates a desirable financial performance.

关 键 词：镁质碳酸盐岩 微细粒浸染金矿 原矿焙烧 

分 类 号：TF831[冶金工程—有色金属冶金]