Alpha-type calcium sulfate hemihydrate compositions and methods of making same

Alpha-type calcium sulfate hemihydrate compositions and methods of making same

4242Disclosed is an improved alpha-type calcium sulfate hemihydrate. Methods of producing an improved powdered calcium sulfate hemihydrate (CaSO.½HO) [alpha-type] compound are disclosed, at least one method including forming calcium sulfate dihydrate (CaSOO.2HO) into a briquette, calcining the briqu...

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Hauptverfasser: Bruce, Robert B, Cox, Danny W
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Sprache:eng
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creator Bruce, Robert B
Cox, Danny W
description 4242Disclosed is an improved alpha-type calcium sulfate hemihydrate. Methods of producing an improved powdered calcium sulfate hemihydrate (CaSO.½HO) [alpha-type] compound are disclosed, at least one method including forming calcium sulfate dihydrate (CaSOO.2HO) into a briquette, calcining the briquette to transform the calcium sulfate dihydrate to calcium sulfate hemihydrate [alpha-type], drying the calcium sulfate hemihydrate [alpha-type] briquette, and optionally grinding the briquette. Also disclosed are methods of producing an improved gypsum plaster including producing the disclosed powdered calcium sulfate hemihydrate [alpha-type] and mixing the powdered calcium sulfate hemihydrate [alpha-type] with water.
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Methods of producing an improved powdered calcium sulfate hemihydrate (CaSO.½HO) [alpha-type] compound are disclosed, at least one method including forming calcium sulfate dihydrate (CaSOO.2HO) into a briquette, calcining the briquette to transform the calcium sulfate dihydrate to calcium sulfate hemihydrate [alpha-type], drying the calcium sulfate hemihydrate [alpha-type] briquette, and optionally grinding the briquette. 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Methods of producing an improved powdered calcium sulfate hemihydrate (CaSO.½HO) [alpha-type] compound are disclosed, at least one method including forming calcium sulfate dihydrate (CaSOO.2HO) into a briquette, calcining the briquette to transform the calcium sulfate dihydrate to calcium sulfate hemihydrate [alpha-type], drying the calcium sulfate hemihydrate [alpha-type] briquette, and optionally grinding the briquette. Also disclosed are methods of producing an improved gypsum plaster including producing the disclosed powdered calcium sulfate hemihydrate [alpha-type] and mixing the powdered calcium sulfate hemihydrate [alpha-type] with water.</abstract><oa>free_for_read</oa></addata></record>
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title Alpha-type calcium sulfate hemihydrate compositions and methods of making same
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