Process for the dewatering of coal and mineral slurries
AssigneeCommonwealth Scientific and Industrial Research Organisation
InventorsChristopher John Veal, Stuart K. Nicol, Barry Kenneth Johnston
Life of this patent
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Abstract
Coal or other mineral slurry is dewatered by establishing a bed of the slurry and injecting a gas stream such as air into the bed to establish turbulent flow to strip moisture. This slurry may use particles in the range 0.5 mm to 30 mm with air injected at about 10 m/sec, and suitable novel apparatus includes a centrifuge or a vibratory conveyor with a closed tunnel and transverse air flow for stripping moisture.
Claims10
A method of reducing moisture content of a bed of solid particles comprising subjecting the bed to a stream of gas to establish turbulent flow through the bed to strip a significant proportion of the moisture contained in the bed, wherein said moisture content of said bed is reduced predominantly by means of a mass transport mechanism effected by the established turbulent flow.
Dependencies are inferred from the claim text.