Calcination method and apparatus

Details Calcination method and apparatus Calcination method and apparatus

1981-02-06

1986-12-16

Yuen, Henry C.

Heating

Processes of heating or heater operation

Including melting, vaporizing, sintering, expanding...

432 58, 432 15, 432171, 34 10, F27B 1400

Patent

active

046294198

ABSTRACT:
An apparatus for calcining a granular or powdered mineral, more specifically hydrated calcium sulphate, comprising a vessel the side wall or walls of which slope inwardly toward a bottom of small cross-sectional area, as compared with an upper region of the vessel, and provided with a downwardly extending heating tube connectable in an upper portion to a gas source and an opening in a lower portion into the interior of the vessel adjacent to the bottom thereof, the arrangement being such that, in use, hot gases issuing from the lower portion of the heating tube will mix and heat substantially all the contents of the vessel.

REFERENCES:
patent: 1576547 (1926-03-01), Reader
patent: 2647738 (1953-08-01), Trainer
patent: 3542347 (1970-11-01), Goldney et al.
patent: 4167819 (1979-09-01), Ebeling et al.
patent: 4176157 (1979-11-01), George et al.

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