低品位难处理金矿生物氧化—氰化提金试验研究  

Experimental Study on Biooxidation and Cyaniding Leaching of Low-Grade Refractory Gold Ore

作　　者：黄中省[1] 伍赠玲[1] 邹刚[1] 王瑞永[1] 

机构地区：[1]紫金矿业集团股份有限公司紫金矿冶设计研究院,福建上杭364200

出　　处：《有色冶金设计与研究》2012年第2期1-4,共4页Nonferrous Metals Engineering & Research

基　　金："973"国家重点基础研究规划课题项目(2010CB735501)

摘　　要：试验研究了矿石粒度、氧化时间、矿堆深度对硫化物氧化率及Fe、As、S脱除率的影响。结果表明,在矿石粒度-10 mm占96%、氧化时间8个月、喷淋强度25 L/m2.h条件下硫化物的氧化率为62.36%。试验考察了氧化渣氰化调碱方法、氰化时间按对金浸出率的影响,结果表明滚瓶氰化、柱浸氰化、堆浸氰化时金的浸出率分别为45.32%、54.36%、52.45%。In this paper,the influence of several variables such as grain size,oxidation time and heap depth on removal rate of Fe/As/S and oxidation rate of sulfide was studied,the result showed that the oxidation rate of sulfide was 62.36% under the conditions of grain size 10mm 96%,oxidation time 8 months and spray strength 25 L/m2·h.The impact of NaOH,CaO and cyaniding time on gold recovery was investigated,and the result showed that the extraction rate of gold was 45.32%,54.36%,52.45% in roll,column and heap cyaniding leaching respectively.

关 键 词：难处理金矿 堆浸生物氧化 氰化 回收率 

分 类 号：TF831[冶金工程—有色金属冶金]