Method for dewatering aggregate solid substrates by miscible liq

Details Method for dewatering aggregate solid substrates by miscible liq Method for dewatering aggregate solid substrates by miscible liq

1983-04-11

1984-08-14

Camby, John J.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 71, 34 92, 34 95, F26B 300, F26B 1900, F26B 1326, F26B 1330

Patent

active

044648448

ABSTRACT:
A method for dewatering an aggregate solid substrate is disclosed which comprises placing the substrate between two moving permeable belts, compressing the substrate between the belts, contacting the substrate with a displacement fluid while it is still compressed between the belts such that the substrate and the fluid remain in plug flow while in contact with each other, removing relatively pure water which is expressed by the displacement fluid, further compressing the substrate between the belts to remove excess displacement fluid, and collecting the dewatered substrate. In a preferred embodiment, both the relatively pure water and the excess displacement fluid are collected for recycling, direct disposal, or other use.

REFERENCES:
patent: 3374550 (1968-03-01), Belleau
patent: 3962798 (1976-06-01), Jackson
patent: 3973329 (1976-08-01), Feess
patent: 4112586 (1978-09-01), Lehtinen
patent: 4339882 (1982-07-01), Dickey et al.
patent: 4397100 (1983-08-01), Dickey et al.

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