甘肃某难选金矿石选矿工艺研究  

Study on the beneficiation process of a refractory gold ore from Gansu Province

作　　者：石磊 李玺[1] 王艳 雷力 王恒峰[2] Shi Lei;Li Xi;Wang Yan;Lei Li;Wang Hengfeng(Sichuan West Metallurgical Testing Technology Co.,Ltd.;Sichuan Institute of Metallurgical Geological Exploration)

机构地区：[1]四川西冶检测科技有限公司 [2]四川省冶金地质勘查院

出　　处：《黄金》2023年第2期34-37,共4页Gold

基　　金：四川省冶金地质勘查局科技创新项目(川冶勘[2021]89号)。

摘　　要：为提高甘肃某难选金矿石选矿指标,根据矿石性质,对比了浮选—尾矿氰化浸出工艺、原矿焙烧—氰化浸出工艺和生物氧化—氰化浸出工艺流程。结果表明:相比浮选—尾矿氰化浸出工艺、原矿焙烧—氰化浸出工艺,在较优条件下,生物氧化—氰化浸出工艺金浸出率分别提高16.67百分点、5.14百分点,且生物氧化具有投资少、能耗低、无污染等优点;生物氧化—氰化浸出工艺更有利于该金矿石的开发利用,金浸出率为85.46%。In order to improve the ore-dressing index of a refractory gold ore from Gansu Province,based on the ore property,the flotation-tailings cyanide leaching process,raw ore roasting-cyanide leaching process,and biological oxidation-cyanide leaching process are compared.Results showed that with better conditions,the leaching rates of the biological oxidation-cyanide leaching process are 16.67 and 5.14 percentage points higher.Plus,the biological oxidation process requires less investment and low energy consumption and generates no pollutants;the biological oxidation-cyanide leaching process is more conducive to the effective development and utilization of gold and the leaching rate of 85.46%can be reached.

关 键 词：难选金矿 浮选 焙烧 生物氧化 氰化 

分 类 号：TF831[冶金工程—有色金属冶金] TD953[矿业工程—选矿]