Process for preparation of purified calcium sulfate in an aqueou

Details Process for preparation of purified calcium sulfate in an aqueou Process for preparation of purified calcium sulfate in an aqueou

1990-05-23

1992-12-22

Straub, Gary P.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

423170, 23304, 106784, C01F 1146

Patent

active

051732840

ABSTRACT:
A process for the preparation in an aqueous medium of purified calcium sulfate, with high whiteness, characterized in that it comprises:

REFERENCES:
patent: 2044942 (1936-06-01), Heckert
patent: 2177254 (1939-10-01), Heckert
patent: 4270954 (1981-06-01), Aignesberger et al.
patent: 4296089 (1981-10-01), Aignesberger et al.
"Recystallization of Calcium Sulfate Hemihydrate in Acid and Alkaline Media" V. F. Karmyshov and N. G. Frolova Translated from Zhurnal Prikladnoi Khimii, vol. 49, No. 12, pp. 2626-2629, Dec. 1976 Original Article Submitted Feb. 9, 1976.

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