The University of Melbourne

Cra Services Ltd.

Alan L Chaffee

Alan S Buchanan

David A Cain

Reginald B Johns

Theodore V Verheyen

Kay F Harvey

Densified coal pellets of improved physical properties and enhanced calorific value are produced by a process which includes subjecting coal to a shearing-attritioning step followed by extrusion and drying steps, characterised by incorporating an additive into the coal that is subject to the said shearing-attritioning step, said additive being chosen from one or more of the group consisting of: alkali metal hydroxides, alkaline earth metal hydroxides, ammonium hydroxide, alkali metal carbonates, alkaline earth carbonates, oxides of base metals, oxides of transition metals, and small molecule carbonyl compounds.

Upgrading solid fuels

A fuel of increased density and calorific value is produced by subjecting brown coal to shearing forces to produce a wet plastic mass which is subsequently compacted and dried.

Growing community of inventors

Ashfield, Australia

Alan L Chaffee