Method and apparatus for dewatering

Details Method and apparatus for dewatering Method and apparatus for dewatering

1993-07-22

1995-05-09

Lithgow, Thomas M.

Liquid purification or separation

With means to add treating material

With distinct reactor tank, trough or compartment

210206, 210219, 210696, 210697, 210406, 209 10, 209 17, 209164, 209166, 44626, B03D 300, B01D 2100, B01D 2128, C10L 910

Patent

active

054137039

ABSTRACT:
A method and apparatus for dewatering an aqueous coal slurry includes imparting high shear forces to the aqueous coal slurry in the presence of a peptizing agent to render coal particles hydrophobic by stripping clay from the coal particles and peptizing the clay in the aqueous medium of the slurry. The slurry is separating to recover coal particles and the aqueous medium is draining medium from the hydrophobic surface of the coal particles.

REFERENCES:
patent: 3361259 (1968-01-01), Von der Gathen
patent: 4284413 (1981-08-01), Capes
patent: 4437861 (1984-03-01), Ishizuka
patent: 4437982 (1984-03-01), Wasson
patent: 4477353 (1984-10-01), Messer
patent: 4537599 (1985-08-01), Greenwald
patent: 4775468 (1988-10-01), Peterson
patent: 5089142 (1992-02-01), Turunc
patent: 5236596 (1993-08-01), Greenwald

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