Method of preparing plaster

Details Method of preparing plaster Method of preparing plaster

1975-06-30

1978-04-25

Garvin, Patrick P.

Compositions: coating or plastic

Coating or plastic compositions

Proteinaceous material containing

106110, 423171, 423172, 423554, 423555, 432 14, 432 15, 34 57E, C04B 1100

Patent

active

040860990

ABSTRACT:
A method of preparing plaster by brief contact between gypsum and a hot gas. The method comprises introducing the gypsum through the axial tube of a nozzle, around which a helical stream of hot gases is created, and bringing the two phases into contact in a vessel at the outlet of the nozzle. The method of the invention makes it possible to vary the quality of plaster produced and to use either dry gypsum or dilute gypsum pastes as the starting material.

REFERENCES:
patent: 1183098 (1916-05-01), Merrell et al.
patent: 3050374 (1962-08-01), Burt et al.
patent: 3238021 (1966-03-01), Webber et al.
patent: 3563701 (1971-02-01), Cannon
patent: 3648994 (1972-03-01), Remmers et al.
patent: 3805869 (1974-04-01), Winter et al.
patent: 3862907 (1975-01-01), Shimotsuma et al.

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