Gypsum calcination

Details Gypsum calcination Gypsum calcination

1971-12-17

1976-05-11

Vertiz, Oscar R.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkaline earth metal

423555, 106109, C04B 1102

Patent

active

039564568

ABSTRACT:
The calcination of gypsum by continuously feeding fine gypsum spirally downwardly through a cylindrical zone into which heated air is injected almost tangentially forming a spiral air conveyor. The calcined gypsum collected at the bottom is of unusual uniformity and can be readily and controllably varied by controlled variations in the characteristics of the heated air conveyor.

REFERENCES:
patent: 1746294 (1930-02-01), Tyler
patent: 2485317 (1949-10-01), Roetheli
patent: 2934328 (1960-04-01), Zvejnieks
patent: 3579300 (1971-05-01), Bloom et al.

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