Treating calcined gypsum with solubilizing agent

Details Treating calcined gypsum with solubilizing agent Treating calcined gypsum with solubilizing agent

1981-04-06

1982-11-23

Straub, Gary P.

Compositions: coating or plastic

Coating or plastic compositions

Proteinaceous material containing

423171, 423555, 156 39, C04B 1100, C01F 542

Patent

active

043603866

ABSTRACT:
A process for producing a healed stucco of low water demand is disclosed in which calcined gypsum is treated with an aqueous solution of a gypsum solubilizing agent, preferably in an impacting blender while grinding the calcined gypsum to increase its surface area. The product can be dried for storage or sent directly to forming gypsum board.

REFERENCES:
patent: B456148 (1976-01-01), Schneller
patent: 1868372 (1932-07-01), Swift
patent: 2177668 (1939-11-01), Marsh et al.
patent: 2390138 (1945-12-01), Vallandigham
patent: 2695850 (1954-11-01), Lorenz
patent: 3415910 (1968-12-01), Kinkade et al.
patent: 3770468 (1973-11-01), Knauf et al.
patent: 4117070 (1978-09-01), O'Neill
patent: 4153373 (1979-05-01), O'Neill
patent: 4201595 (1980-05-01), O'Neill
patent: 4252568 (1981-02-01), Bounini

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