The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 19, 1988
Filed:
Dec. 08, 1986
Kay F Harvey, Victoria, AU;
Theodore V Verheyen, Victoria, AU;
Reginald B Johns, Victoria, AU;
Alan L Chaffee, Illawong, AU;
Alan S Buchanan, Victoria, AU;
David A Cain, Victoria, AU;
University of Melbourne, Victoria, AU;
CRA Services Limited, Victoria, AU;
Abstract
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.