Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
METHODS FOR CALCINING GYPSUM
A method for calcining gypsum includes subjecting a composition including gypsum dihydrate to a predetermined vacuum. The method further includes maintaining the composition under the at least partial vacuum at a calcining temperature for a predetermined calcining time. The calcining temperature may be in a range from 60°C to 125 °C, or in a range from 65 °C to 85°C. The vacuum may be in a range from 25 mbar to 50 mbar. The predetermined calcining time may be in a range from 3 hours to 10 hours. The maintaining is effective to at least partially remove water of crystallization from the gypsum dihydrate to convert the composition to a product including gypsum hemihydrate.
METHODS FOR CALCINING GYPSUM
A method for calcining gypsum includes subjecting a composition including gypsum dihydrate to a predetermined vacuum. The method further includes maintaining the composition under the at least partial vacuum at a calcining temperature for a predetermined calcining time. The calcining temperature may be in a range from 60°C to 125 °C, or in a range from 65 °C to 85°C. The vacuum may be in a range from 25 mbar to 50 mbar. The predetermined calcining time may be in a range from 3 hours to 10 hours. The maintaining is effective to at least partially remove water of crystallization from the gypsum dihydrate to convert the composition to a product including gypsum hemihydrate.
METHODS FOR CALCINING GYPSUM
CARPENTER RANDY B (Autor:in) / CAUSEY RONALD W (Autor:in) / PLUMMER JENNIFER L (Autor:in)
09.01.2025
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME