青海某微细浸染型难处理金矿石工艺矿物学研究  

Process mineralogy on a refractory microfine-dissemination gold ore in Qinghai Province

作　　者：张鑫宇 霸慧文 应永朋 陈攀[1] Zhang Xinyu;Ba Huiwen;Ying Yongpeng;Chen Pan(Qinghai Geological Minerals Testing and Application Center;Qinghai Provincial Museum of Natural Resources)

机构地区：[1]青海省地质矿产测试应用中心 [2]青海省自然资源博物馆

出　　处：《黄金》2024年第3期42-45,共4页Gold

基　　金：青海省重点研发与转化计划项目(2019-SF-139)。

摘　　要：为了进一步提高青海某微细粒浸染型金矿石回收指标,对其进行详细的工艺矿物学研究。研究结果表明:影响金回收率的主要因素是细粒和微细粒级黄铁矿、毒砂的回收问题。由于大部分微细粒级黄铁矿和毒砂在磨矿作业时不易单体解离,造成部分金矿物损失。除此之外,脉石矿物包裹微细粒金也是金矿物的重要损失形式。建议采用阶段磨矿阶段选别的浮选工艺,提高金回收率。In order to further improve the recovery index of a refractory microfine-dissemination gold ore in Qinghai Province,a detailed process mineralogy study was conducted.The results showed that the main factors affecting gold recovery were the recovery of fine and micro-fine pyrite and arsenopyrite.Due to the difficulty of monomer dissociation of most fine and micro-fine pyrite and arsenopyrite during the grinding process,some gold minerals were lost.In addition,fine-grained gold inclusion by vein minerals was also an important form of gold mineral loss.It is suggested to use a flotation process with staged grinding and separation to improve gold recovery rate.

关 键 词：微细粒浸染型金矿 包裹体 黄铁矿 毒砂 单体解离度 

分 类 号：TD952[矿业工程—选矿]