摘要
石英脉型金矿是我国重要的金矿工业类型,矿石中金多以自然金的形式存在。尼尔森选矿机是一种高效离心选矿设备,能够有效回收矿石中的自然金,因其富集比高、环境友好等优势,已在我国石英脉型金矿选矿工艺中得到广泛应用。为了尽可能地提高金回收率,尼尔森重选通常与浮选、氰化等工艺联合使用。目前国内研究最多、应用最广泛的是尼尔森重选—浮选工艺和尼尔森重选—全泥氰化工艺,此外,还有少数关于浮选—尼尔森重选工艺和尼尔森重选—无氰提金工艺的研究。在介绍各个工艺流程研究现状的基础上,重点列举了尼尔森重选—浮选工艺和尼尔森重选—全泥氰化工艺的生产实例,基于各工艺优缺点的综合分析,提出尼尔森重选—浮选工艺普遍适用于我国石英脉型金矿。
Quartz vein type gold deposits is China＇ s important industrial type of gold deposit, whose gold existing form is native gold.As a kind of high efficient centrifugal separation equipment,Knelson concentrator can effectively isolate natural gold in ore.Knelson dressing is widely used in the process of quartz vein type gold deposits in China because of its high enrichment ratio, environment friendly and other advantages.In order to improve gold recovery,Knelson gravity separation often used with flotation, cyanide, etc.Knelson gravity separation-flotation process and Knelsen gravity separation-full mud cyanide process are the most widely used process in China.In addition, there are a few research on flotation-Knelson gravity separation process and Knelson gravity separation-noncyanide leaching process.The research status of each process were introduced respectively and some production instance of Knelson gravity separation-flotation process and Knelsen gravity separation-full mud cyanide process were listed in this paper.Finally,the conclusion that Knelson gravity separation-flotation process is generally applicable to quartz vein type gold deposits in China was put forward on the basis of comprehensive analysis of the advantages and disadvantages of each process.
出处
《黄金科学技术》
CSCD
2017年第5期73-79,共7页
Gold Science and Technology
基金
国家自然科学基金项目"含砷复杂金矿细菌氧化矿物界面能及作用机制的基础研究"(编号:U1608254)
企业联合攻关项目"海南山金抱伦金矿联合尼尔森重选
浮选绿色提金新工艺研究"(编号:2017021800056)联合资助
关键词
石英脉型金矿
粗粒金
尼尔森选矿机
尼尔森重选—浮选
尼尔森重选—全泥氰化
金回收率
quartz vein type gold deposit
coarse grained gold
Knelson concentrator
Knelson gravity separation-flotation
Knelson gravity separation-full mud cyanidation
gold recovery rate
