There is a problem of low gold recovery rate in a fine-grained refractory gold mine in Henan Province,and it is urgent to optimize the original process.Alkylamines can undergo main reactions with reactants under the action of catalysts,followed by separation,crosslinking,chelation,and emulsification reactions,thereby producing a new type of collector MC.The MC is introduced for flotation and industrial test,and combined with the occurrence state,embedding characteristics,and particle size characteristics of gold is gained by analyzing the properties of the raw ore,and the optimal process parameters are determined such as grinding fineness,MC dosage,slurry pH,and activator dosage through laboratory flotation tests,which are compared with the flotation indicators of the on-site collector system.The experimental results show that using MC as a collector increases the grade of gold concentrate from 28.09 g/t to 34.46 g/t,the gold recovery rate increases from 84.85%to 88.31%,and the recovery rate increases by 3.46%,achieving good technical indicators and synchronously improving the grade and recovery rate of gold concentrate,and it is expected that the annual economic benefits will be increased by more than 13 million yuan.
关键词
新型捕收剂/物相分析/微细粒难选金矿/金精矿品位/浮选回收率
Key words
new type of collector/phase analysis/fine grained refractory gold deposits/gold concentrate grade/flotation recovery rate
维普
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