Ultrasonic conditioning and wet scubbing of fly ash

Details Ultrasonic conditioning and wet scubbing of fly ash Ultrasonic conditioning and wet scubbing of fly ash

1998-03-17

1998-11-24

Lithgow, Thomas M.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

209 3, 209164, 241 1, 106705, 106DIG1, 106405, B03D 102, B03B 100, B02C 1918

Patent

active

058401792

ABSTRACT:
Processes for treating fly ash to enhance the fly ash as a pozzolan for portland cement mixes and to separate therefrom a substantial carbon compound and/or to increase the fineness of the fly ash include the treatment of a fly ash slurry with ultrasonic energy using ultrasonic horns immersed in a slurry of fly ash and water and imparting to said slurry such ultrasonic energy as to cause microscopic cavities to form and implode with high localized energy to break up fly ash agglomerations along cleavage lines and to break up carbon particles and matrices which have entrapped fly ash microspheres therein to release the microspheres into the slurry. A conditioner agent may be added at or during ultrasonic treatment to enhance the flotation of the carbon compound.

REFERENCES:
patent: 2093898 (1937-09-01), Taplin
patent: 3202281 (1965-08-01), Weston
patent: 4392981 (1983-07-01), Corbeels
patent: 4537599 (1985-08-01), Greenwald, Sr.
patent: 4919807 (1990-04-01), Morton
patent: 5059309 (1991-10-01), Jordan
patent: 5299692 (1994-04-01), Nelson
Ultrasonic Ash/Pyrite Liberation, Buban, K.S.; Yungman, B.A. (Paladin Technology, Inc. (US)) Publ. Washington, D.C. (USA) Coal and Slurry Technology Association, 1991, pp. 323-334.

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