Device for drying gypsum

Details Device for drying gypsum Device for drying gypsum

1982-12-06

1985-06-18

Camby, John J.

Heating

Work chamber having heating means

Having particulate or liquid heat transfer medium in work...

423171, 432 27, 432215, F27B 1500, C04B 1102

Patent

active

045239061

ABSTRACT:
Cold, wet gypsum is admixed to a moving bed of hot solid particles of a heat-retaining material. The mixture is fed to a moving bed type drier where it is agitated while the released vapors are withdrawn. After discharge from the drier, dry gypsum is separated from the heating particles and the latter are recirculated into a heater. Preferably, flue gases from a combustion chamber are employed for heating the particles, which are preferably in the form of steel balls.

REFERENCES:
patent: 2994523 (1961-08-01), Mitchell
patent: 3158441 (1964-11-01), Stevens
patent: 3437330 (1969-04-01), Worner
patent: 4101630 (1978-07-01), Stiling
patent: 4193758 (1980-03-01), Peterson et al.

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