Process for making fuel slurries of coal in water and...

Details Process for making fuel slurries of coal in water and... Process for making fuel slurries of coal in water and...

C - Chemistry, Metallurgy

10

L

44/10

C10L 1/32 (2006.01)

Patent

CA 1178441

ABSTRACT Process for making substantially stable coal- water slurries comprising: (a) admixing: (i) ultrafine coal particles having a maximum size of about 10µm MMD in an amount comprising about 10 to 50% by weight of the slurry, (ii) larger coal particles within the size range of about 20 to 200µm MMD in an amount sufficient to provide a-desired total coal concentration in the slurry, (iii) water, and, (iv) a minor amount of dispersant consisting essentially of alkaline earth metal salt of organo-sulfonate in which the organic moiety is multi-functional, and (b) subjecting the mixture to high shear at a rate of at least about 100 sec-1. The product of this process can be sufficiently highly loaded to serve as fuel.

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