Enhancing Efficiency of Fine Coal Flotation by Picobubbles
TAO You-jun
LIU Qian
Daniel TAO
TAO Xiu-xiang
Abstract：In the froth flotation cell, a low bubble-particle collision probability resulted in a low flotation recovery of the finest size coal, while a high detachment probability resulted in poor coarse coal flotation recovery. The Venturi tube was used to produce picobubbles, the funda-mental mechanism which picobubbles improve the flotation recovery of particles was discussed. The results show that the picobubbles adhere preferentially to the hydrophobic surface of parti-cle, the fine coal recovery can be increased by 10%-30% by adjusting the parameters inclu-ding feed rate, collector dosage, etc. Picobubbles also acted as a secondary collector and re-duced the collector dosage by one third to one half.
Keywords：collisiondetachmentfine coalfroth flotationpicobubble
Publication Date：2009-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 820-823 )