Particulate solid materials

Details Particulate solid materials Particulate solid materials

1974-05-28

1976-05-04

Hart, Charles N.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

210 67, 210 69, 106306, 423518, F26B 700

Patent

active

039546098

ABSTRACT:
A process is disclosed whereby aqueous slurries of particulate solid materials having a relatively low solids content are converted to aqueous slurries having a relatively high solids content. The process includes deflocculating a mixture comprising a particulate solid material and water with the aid of a chemical deflocculating agent to form a first aqueous slurry, partially dewatering the first aqueous slurry in, for example, a pressure filter to form a cake having a reduced water content as compared to the mixture and subjecting the cake to mechanical work which comprises at least one cycle of applying a stress to the cake and relaxing the applied stress to form a second aqueous slurry having an increased solids content as compared to the first aqueous slurry.

REFERENCES:
patent: 2345311 (1944-03-01), Wilson
patent: 3615768 (1971-10-01), Winyall
patent: 3674529 (1972-07-01), Toms

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