C - Chemistry – Metallurgy – 10 – L
Patent
C - Chemistry, Metallurgy
10
L
44/34
C10L 1/32 (2006.01) B02C 19/20 (2006.01) C10F 5/00 (2006.01) C10F 7/04 (2006.01) C10F 7/08 (2006.01)
Patent
CA 1271330
ABSTRACT Process for treatment of brown coal which comprises subjecting the said coal to shearing forces to produce a plastic mass which is capable of conversion by subsequent compaction and drying into a fuel of increased density and enhanced calorific value, is characterised in that the water content of the coal is more than 54% and the shearing forces are applied for less than one hour, shorter times being preferred, for example less than 30 seconds. A preferred embodiment provides a continuous process in which the coal is treated in a machine that subjects it to sequential steps of shearing and extrusion in a continuous manner. The extruded product after drying provides the fuel of increased density and enhanced calorific value. The desired effect may also be obtained by treating part of a quantity of brown coal and blending the treated portion with the untreated remainder of the said quantity.
500721
Buchanan Alan S.
Cain David A.
Harvey Kaye F.
Johns Reginald B.
Buchanan Alan S.
C.r.a. Services Limited
Cain David A.
Harvey Kaye F.
Johns Reginald B.
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