微细粒黄铁矿柱浮选试验

研究了用旋流喷射浮选柱浮选-19 μm占86.88%微细粒黄铁矿单矿物时，药剂用量和充气速率对总回收率和粒级回收率的影响，比较了旋流喷射浮选柱与普通浮选机对该微细粒黄铁矿的回收效果。结果表明：用旋流喷射浮选柱浮选微细粒黄铁矿时，起泡剂用量和充气速率有一个适宜的中间值，而捕收剂用量应在本试验最大用量的基础上进一步增加，以弥补因极细粒矿物消耗大量捕收剂而引起的捕收剂总量不足。浮选柱对-19 μm黄铁矿的回收效果明显优于浮选机，对19~30 μm黄铁矿的回收效果则与浮选机基本相同；两种浮选设备对-3 μm黄铁矿的浮选效果都不理想。

Experimental Research on the Column Flotation of Micro-fine Pyrite Particles

The effect of reagent dosage and aeration rate on the total recovery and the recovery of size fractions in treating 86.88% -19 μm micro-fine pyrite ore by swirl injection flotation column was studied, and the recovery effects of the swirl injection flotation column and conventional flotation machine for this micro-fine pyrite were compared. The results show that when the swirl injection flotation column is used, there is a compromise between the frother dosage and aeration rate while the collector dosage should be larger than the maximum value used in this test, so as to make up for the insufficient collector amount due to the strong consumption of collector by extremely fine particles. In terms of pyrite recovery, the flotation column is evidently superior to the flotation machine for -19 μm size fraction, and basically the same with the latter for 19~30 μm size fraction and however, both are not ideal for -3 μm size fraction.