Agglomeration of coal fines

Details Agglomeration of coal fines Agglomeration of coal fines

C - Chemistry, Metallurgy

10

L

44/49

C10L 5/14 (2006.01)

Patent

CA 1284029

A B S T R A C T AGGLOMERATION OF COAL FINES Coal fines are agglomerated by mixing to- gether the coal fines, a phenol-formaldehyde resole resin in alkaline aqueous solution and a curing agent for the resin comprising one or more esters selected from esters of polyhydric alcohols, carbonate esters and lactones, forming the resulting mixture into agglomerates and drying and curing the agglomerates. A small proportion of a thermoplastics material such as poly- vinyl alcohol or an acrylic polymer may be included to improve the surface hardness of the agglomerates, and a small proportion of a material which will improve the coking property and hot strength of the agglomerates, for example finely ground coking coal or bitumen when the coal fines are anthracite fines, may also be included.

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