Process for preparing a stable slurry of coal

Details Process for preparing a stable slurry of coal Process for preparing a stable slurry of coal

1977-08-23

1979-01-02

Custer, Jr., Granville Y.

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

241 24, 241 29, B02C 2318

Patent

active

041323653

ABSTRACT:
The present invention pertains to the preparation of a stable coal/water slurry by particulating the coal; classifying the coal into two parts on the basis of specific gravity; discarding the ash-rich residue; classifying the lesser specific gravity part of the coal from the preceding classification into two parts; classifying the lesser specific gravity part of the coal from the preceding classification into three parts and grinding the heaviest part to the most fine particles, the next-to-heaviest part to less fine particles, and the lightest part to least fine particles; grinding the coal from the next-to-last classification finer than the heaviest part of the coal of the preceding classification; and combining the coal of the preceding two classifications with water to form a slurry.

REFERENCES:
patent: 2319394 (1943-05-01), Erickson
patent: 2330479 (1943-09-01), Erickson

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