Continuous calcining of gypsum

Details Continuous calcining of gypsum Continuous calcining of gypsum

1977-07-14

1978-07-18

Vertiz, O. R.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkaline earth metal

423172, C04B 1102

Patent

active

041016300

ABSTRACT:
A continuous calciner, particularly advantageous in converting gypsum to plaster, with two coaxial cylindrical walls, provides for heating air within the inner cylinder and then directing the air, for conveying and heating fine particles, along a spiral path, between the walls of the two coaxial cylinders, extending from one end of the calciner to an exit at the second end.

REFERENCES:
patent: 2647738 (1953-08-01), Trainer
patent: 2911730 (1959-11-01), Schaub et al.
patent: 3956456 (1976-05-01), Keller et al.

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