Pretreatment by alkaline wetting and holding at temperature of n

Details Pretreatment by alkaline wetting and holding at temperature of n Pretreatment by alkaline wetting and holding at temperature of n

1986-08-08

1987-10-27

Metz, Andrew

Mineral oils: processes and products

By treatment of solid mineral, e.g., coal liquefaction, etc.

Specified procedure to improve separation of solids from...

208390, 208391, 208403, 208 42P, 208430, C10G 106, C10G 100

Patent

active

047028203

ABSTRACT:
Process for pretreatment at atmospheric pressure or a pressure close to atmospheric pressure by alkaline wetting and holding at temperature of natural materials whose gangue comprises argillaceous compounds capable of forming a stable plastic suspension in the presence of water and containing at least one combustible element which can be put into useful form wherein, in order to permit subsequent easy operations for separation of the liquid aqueous and solid phases of the gangue:

REFERENCES:
patent: 2202901 (1940-06-01), Dreyfus
patent: 4159240 (1979-06-01), Malek
patent: 4167397 (1979-09-01), Grant
patent: 4222849 (1980-09-01), Shimizu
patent: 4234319 (1980-11-01), Beeson
patent: 4409091 (1983-10-01), Kessick

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