Coal treatment process

Details Coal treatment process Coal treatment process

1981-09-04

1983-11-01

Warren, Charles F.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

44 1SR, 241 5, 241 39, 106309, C10L 900, C10L 908, B02C 1906

Patent

active

044128398

ABSTRACT:
A process and apparatus for treating coal to produce micron-size coal particles having high surface reactivity and a low level of ash-forming impurities. The process involves grinding the coal in a substantially air tight fluid energy attrition mill under controlled temperature conditions to form a coal fraction comprising a major portion of hydrophobic coal particles and a minor portion of hydrophilic coal particles and an impurities-fraction comprising hydrophilic impurities particles, and separating the hydrophobic coal particles from the hydrophilic particles by virtue of the particles' relative affinity for water. The relative amount of hydrophilic coal particles may be reduced by the addition of a petroleum fraction to the coal during grinding.

REFERENCES:
patent: 1529706 (1925-03-01), Merz
patent: 4288231 (1981-09-01), Taylor

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