难选泥质金矿石浮选工业试验研究  

Industrial test study on flotation of refractory argillaceous gold ore

作　　者：张孟科 高锋辉 王树新 代军 王佳佳 ZHANG Mengke;GAO Fenghui;WANG Shuxin;DAI Jun;WANG Jiajia(Luoning Jijiawa Gold Mine Co.,Ltd.,Luoyang 471023,Henan,China)

机构地区：[1]洛宁吉家洼金矿有限公司,河南洛阳471023

出　　处：《矿山机械》2022年第10期46-50,共5页Mining & Processing Equipment

摘　　要：河南某金矿石中金矿物属于微细粒级金,含量较低,原矿品位仅为2.2g/t,矿石泥化现象较为严重,随着磨矿细度的提高,矿浆黏度加大,严重影响分选效果。采用浮选法富集金矿物,在磨矿细度-0.074mm占75%~80%时,采用MC黄药+丁铵黑药的组合捕收剂,NaCO作为矿浆pH值调整剂,水玻璃作为抑制剂,实现了含金矿物与脉石矿物有效分离,并以此进行了工业试验,获得了金精矿品位为37g/t、回收率达到88.95%的良好指标。The gold-bearing mineral in a certain gold ore from Henan was micro-fine particle with low content,the grade of raw ore was only 2.2 g/t,argillization degree was serious.With the increase in the grinding fineness,the slurry viscosity rose,thus the separation results were seriously affected.The flotation method was applied to concentrate the gold material,while-0.074 mm grinding fineness accounting for 75% ~ 80%,MC xanthate and butylamine dithiophosphate being combined as the collector,NaCObeing used as slurry pH modifier,sodium silicate being used as inhibitor,the gold-bearing mineral and gangue mineral were effectively separated.And then industrial test was conducted,the excellent indexes of gold concentrate grade of 37 g/t and gold recovery of 88.95% were obtained.

关 键 词：含金矿物 浮选 微细粒级 抑制剂 水玻璃 

分 类 号：TD953[矿业工程—选矿]