WATER-COAL SUSPENSION Russian patent published in 1999 - IPC

FIELD: coal chemistry. SUBSTANCE: suspension has the following components, wt.-%: coal, 58-60; humate, 0.5-0.7; and water, up to 100. The source of humate is hydroxylamino-, alkylamino-, arylaminosulfohumates or a mixture of sodium humate with amines - urea, thiourea, tetraethylammonium chloride. This suspension exhibits the better stability (up to 20-25 days), decreased viscosity (up to 0.231-0.541 Pa x s). This suspension can be transported by pipe-line. EFFECT: improved property and quality of suspension. 2 cl, 3 tbl