某金矿矿泥单独浮选试验研究

山东某金矿选厂在破碎段经洗矿、分级、浓缩脱出的矿泥含金量与原矿相当，但粒度过细，进入浮选系统后会恶化浮选过程。为此，分别采用浮选机和旋流-静态微泡浮选柱对该矿泥进行了单独浮选试验。试验结果表明，矿泥经浮选机1粗1精2扫选别，可获得平均金品位为90.73 g/t、平均金回收率为77.91%的合格精矿，经旋流-静态微泡浮选柱1粗1精选别，可获得平均金品位为98.43 g/t、平均金回收率为87.93%的合格精矿，旋流-静态微泡浮选柱不仅选别指标明显优于浮选机，而且可比浮选机减少2次扫选作业。

Separate Flotation Experimental Study on a Gold Ore Slime

The gold content in slime after washing, classification and concentration at the crushing stage in a Shandong gold processing plant is equivalent to that in raw ores. But its extremely fine crushing made the flotation performance worse in flotation system. Therefore, the flotation tests were carried out by adopting the flotation machine and the cyclonic-static micro-bubble flotation column separately. The results showed that with the flotation machine, qualified concentrate with average gold grade of 90.73 g/t and average gold recovery of 77.91% was obtained from the slime by the process of one-roughing, one-cleaning and two-scavenging; With the cyclonic-static micro-bubble flotation column, qualified concentrate with average gold grade of 98.43 g/t and average gold recovery of 87.93% was achieved by the process of one-roughing and one-cleaning. The cyclonic-static micro-bubble flotation column can not only realize a better separation index, but reduce two-scavenging works than the flotation machine.