Coal slurry composition

C - Chemistry – Metallurgy – 10 – L

Patent

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44/10

C10L 1/32 (2006.01)

Patent

CA 1181590

ABSTRACT OF THE DISCLOSURE A coal-water slurry of a coal concentration of 50 to 80 percent by weight having excellent fluidity, dis- persion stability, and stability when left standing comprises: (a) a coal powder of which 71 to 85 percent by weight are coal particles of particle sizes of 74µ or smaller, and which, moreover, has a particle size distribution such that, when said distribution is re- presented on a Rosin-Rammler chart, the gradient (in terms of the value of tan .alpha.) of the straight line join- ing two points respectively corresponding to the quanti- ty (percent by weight) of particles of particle sizes less than 44µ and to the quantity (percent by weight) of particles of particle sizes less than 74µ is 0.4 to 0.9; (b) at least one species of a specific surfactant; and (c) water.

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