非洲某氧化型金矿重选—浸出工艺研究  

Research of gravity-leaching process of an oxidized gold ore in Africa

作　　者：吕良[1,2,3] 岳铁兵 王威[1,2] 郭珍旭 LüLiang;Yue Tiebing;Wang Wei;Guo Zhenxu(Zhengzhou Institute of Multipurpose Utilization of Mineral Resources,Chinese Academy of Geological Sciences;Key Laboratory for Polymetallic Ores Evaluation and Utilization,MNR;College of Resources and Civil Engineering,Northeastern University)

机构地区：[1]中国地质科学院郑州矿产综合利用研究所 [2]自然资源部多金属矿综合利用评价重点实验室 [3]东北大学资源与土木工程学院

出　　处：《黄金》2021年第3期56-59,共4页Gold

基　　金：中国地质调查局地质调查二级项目(DD20201174)。

摘　　要：非洲几内亚某氧化型金矿石中金以微细粒形式嵌布于脉石矿物裂隙,针对该矿石性质,在阶段磨矿的基础上,采用重选—浸出工艺,获得了较好指标:金总回收率达到96.60%,其中尼尔森重选可获得金品位129.82 g/t、金回收率62.03%的精矿;重选尾矿经环保浸出剂浸出,尾矿金品位降至0.12 g/t,金浸出率34.58%。研究结果为中资企业开发利用境外矿产资源提供了技术支撑。The gold in a certain oxidized gold ore in Guinea,Africa,is distributed in the fissure of gangue minerals in the form of fine particles.According to the ore property,a gravity-leaching process is carried out based on stage grinding and has achieved good index:the total recovery of gold is 96.60%;gold concentrate with a grade of 129.82 g/t and a recovery of 62.03%can be obtained by Nelson gravity separation;the gold grade in the tailings from gravity separation is reduced to 0.12 g/t after environment-friendly agent leaching,and the gold leaching rate is 34.58%.The research results provide technical support for the development and utilization of overseas resources for Chinese enterprises.

关 键 词：氧化型金矿 尼尔森选矿机 重选 阶段磨矿 环保浸出剂 

分 类 号：TD953[矿业工程—选矿]