Improvements in the Manufacture of Plaster of Paris

639. Brothers, W. M. Jan. 9. Calcium sulphate. -Plaster of paris is prepared by heating gypsum or other hydrated calcium sulphate under reduced pressure. The material may be enclosed in a steam-jacketed vessel connected through a condenser with a vacuum pump, and stirring-means may be provided.

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Bibliographische Detailangaben
1. Verfasser:	WILLIAM MALAM BROTHERS
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA METALLURGY REFRACTORIES SLAG TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	639. Brothers, W. M. Jan. 9. Calcium sulphate. -Plaster of paris is prepared by heating gypsum or other hydrated calcium sulphate under reduced pressure. The material may be enclosed in a steam-jacketed vessel connected through a condenser with a vacuum pump, and stirring-means may be provided.