Process for forming coal compact without a binder

Details Process for forming coal compact without a binder Process for forming coal compact without a binder

1995-03-21

1997-08-19

Willis, Jr., Prince

Fuel and related compositions

Consolidated solids

44280, 44553, 44596, C10L 500

Patent

active

056583575

ABSTRACT:
A process for forming durable, mechanically strong compacts from feed mixtures comprising solid particles in contact with a liquid (e.g., carboniferous particles in contact with water) which does not require use of a binder is disclosed. The process comprises applying a compressive stress to the feed mixture either by compacting the feed in a mold or by extruding the feed through the die of a suitable extrusion apparatus while controlling certain process parameters, including the moisture content and the zeta potential of the particulate feed. The process can be used to form large, cylindrically-shaped compacts from coal particles (i.e., "coal logs") so that the coal can be transported in a hydraulic coal log pipeline or by conventional means.

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