Flash calcination to produce soluble anhydrous calcium sulfate

Details Flash calcination to produce soluble anhydrous calcium sulfate Flash calcination to produce soluble anhydrous calcium sulfate

C - Chemistry, Metallurgy

04

B

23/103

C04B 11/02 (2006.01) C04B 11/05 (2006.01)

Patent

CA 1068877

METHOD FOR PRODUCING INSOLUBLE CALCIUM SULFATE ANHYDRITE Abstract of the Disclosure Naturally occurring or man-produced calcium sulfate dihydrate is subjected to a process which involves concomitant flash calcination, utilizing co- current contact of the gypsum with a gaseous heat source, and self-comminutation to produce the insoluble calcium sulfate anhydrite in relatively pure and finely comminuted form without the use of specially- sized feed rock and extensive mechanically motivated grinding of the product required by prior means known in this art.

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