用接触角测量、浮选试验和动电位测量首次研究了纯滑石的天然可浮性。采用聚丙烯乙二醇作起泡剂可在短时间内获得高的浮选回收率。用该法可以获得适于不同工业用途的滑石精矿。研究了 pH值和起泡剂用量对浮选过程的影响。获得的滑石粗精矿含 60 %滑石 ,滑石回收率为 90 %。粗精矿再磨至 1 0 0 % -1 2 5μm ,然后用预先确定的最佳浮选条件再浮选。当粗精矿含 4 8 69%滑石 ,精选精石含 93 5%滑石 ,其回收率为 70 %。 For the first time, the natural buoyancy of pure talc was studied by contact angle measurement, flotation test and potentiodynamic measurement. The use of polypropylene glycol as a blowing agent in a short period of time to obtain high flotation recovery. This method can be obtained for different industrial applications talc concentrate. The effect of pH and foaming agent on the flotation process was investigated. Crude talc concentrate obtained with 60% talc, talc recovery of 90%. The crude concentrate is reground to 100% to 125 μm and then re-flotated with the optimal flotation conditions determined in advance. When the crude concentrate contains 488% talc, 93% talc is selected as the concentrate, and the recovery rate is 70%.