Production of aqueous coal slurries having high coal contents

Details Production of aqueous coal slurries having high coal contents Production of aqueous coal slurries having high coal contents

C - Chemistry, Metallurgy

10

L

44/10

C10L 1/32 (2006.01)

Patent

CA 1221235

ABSTRACT Coarse coal particles are pulverized to at least 70% passing through a standard 200 mesh screen in the presence of water in an amount to form aqueous coal slurries having a coal concentration from 60 to 80% by weight. The pulverization is carried out also in the presence of polyether typed polyoxyalkylene adducts having a high molecular weight with polyols having at least three active hydrogen atoms, phenol/aldehyde condensates of polyalkylene- imines, or derivatives of these adducts. - 25 -

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