Sonic Flotation of Phosphate Ores.
Proc Engineering Foundation Conf Soc Min Metall and Exploration Company 1989 :147-153
The U.S. Bureau of Mines has developed a continuous ultrasonic flotation cell for the recovery of Florida phosphate ore. Within a small mixing chamber near the bottom of the flotation cell, an ultrasonic probe agitates an injected mixture of air, water, and phosphate ore and breaks the air into fine bubbles. Phosphate particles are preferentially attached to these fine bubbles and floated in the main chamber of the flotation cell. Over 94 pct of the phosphate was recovered, resulting in a 30 pct p2o5 concentrate. The ultrasonic energy consumption was less than 7kw.H/mt of phosphate ore.
Proc. Engineering Foundation Conf; Soc. Min., Metall., and Exploration; Co, 1989, PP. 147-153