Gypsum-based granules and method of production

Details Gypsum-based granules and method of production Gypsum-based granules and method of production

C - Chemistry, Metallurgy

04

B

252/40, 261/71

C04B 11/02 (2006.01) A01N 25/12 (2006.01) B01J 20/04 (2006.01) C01F 11/46 (2006.01) C04B 18/02 (2006.01)

Patent

CA 1135730

S P E C I F I C A T I O N TO ALL WHOM IT MAY CONCERN: BE IT KNOWN that we, BARRY A. OMILINSKY and FREDRICK E. WOLATZ, citizens of the United States, residing, respectively, at 7412 Lake Street, Morton Grove, and 4545 Raymond Avenue, Brookfield, both in the County of Cook and State of Illinois, have made a new and useful improvement in GYPSUM-BASED GRANULES AND METHOD OF PRODUCTION of which the following is a specification. Abstract of the Disclosure Calcium sulfate hemihydrate is processed into agglom- erates such as granules and/or macrogranules by addition of an aqueous binder to a fluidized charge of calcium sulfate hemi- hydrate particles. The hemihydrate particles are agglomerated to a predetermined size range and hydrated to calcium sulfate dihydrate. The produced agglomerates have a bulk density of less than about 55 pounds per cubic foot, a surface hardness providing less than about 40 percent attrition, and a liquid holding capacity of at least about 10 percent.

317110

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