Fibrous calcium sulfate

Details Fibrous calcium sulfate Fibrous calcium sulfate

C - Chemistry, Metallurgy

01

F

23/104, 261/71

C01F 11/46 (2006.01) C04B 14/38 (2006.01) D01F 9/08 (2006.01)

Patent

CA 1115487

ABSTRACT Fibrous calcium sulfate is produced by autoclaving a dilute aqueous suspension of gypsum, at a temperature between the minimum fiber forming temperature and about 20°C above, in the presence of a dispersing agent to provide for discrete whisker crystal development and protecting the whisker crystals from destruction or conversion to a different physical or chemical form until they have been stabilized by calcining at a temperature in excess of 500°C.

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