Coal-aqueous slurry

Details Coal-aqueous slurry Coal-aqueous slurry

C - Chemistry, Metallurgy

10

L

44/10

C10L 1/32 (2006.01)

Patent

CA 1252294

ABSTRACT COAL-AQUEOUS SLURRY Coal-aqueous slurries having improved shear stability and lower viscosity are described. The use of a plur- ality of surfactants each having hydrophilic portions with each surfactant hydrophilic portion having a dif- ferent molecular weight are utilized in sufficient amounts to wet and disperse particulate coal and water. When two surfactants are utilized, coal-aqueous mixtures may be formulated having up to or over 70% by weight coal when the first surfactant has a hydrophilic portion comprising a relatively large number of ethylene oxide units and the second surfactant has hydrophilic portion comprising a relatively small number of ethylene oxide units.

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