Coal ash modification and reduction

Details Coal ash modification and reduction Coal ash modification and reduction

1992-04-06

1993-03-09

McAvoy, Ellen

Fuel and related compositions

Coal treating process or product thereof

Removal of undesirable

44621, C10L 902

Patent

active

051923386

ABSTRACT:
A process for the selective removal or chemical modification of minerals contained in carbonaceous materials, comprising treating with an aqueous solution of a compound selected from ammonium salts, polyhydroxy alcohols, organic acids, organic complexing agents and polysaccharides. The process may be used to increase coal recovery, improve coal quality and enhance coal ash fusion characteristics.

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patent: 4705531 (1987-11-01), Blytas et al.
patent: 4741741 (1988-05-01), Salem et al.
patent: 4753033 (1988-06-01), Kindig
patent: 4936045 (1990-06-01), Waugh et al.

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