METHODS FOR RECLAIMING GYPSUM PANELS THAT CONTAIN HYDROPHOBIC MATERIALS AND USE THEREOF

METHODS FOR RECLAIMING GYPSUM PANELS THAT CONTAIN HYDROPHOBIC MATERIALS AND USE THEREOF

A method for making a gypsum board including:combining a first plurality of particles including at least about 50 wt. % calcium sulfate dihydrate and about 0.05 wt. % to about 10 wt. % hydrophobic material and having a D50 particle size of about 200 μm to about 800 μm with a second plurality of part...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Rueda, Angel Arturo, Schermann, Rudy A, Vilinska, Annamaria, Lau, Te Hua, Li, Alfred, Erickson, Stephen P, Walker, Blair C, Carrazco, Jose Luis
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
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A method for making a gypsum board including:combining a first plurality of particles including at least about 50 wt. % calcium sulfate dihydrate and about 0.05 wt. % to about 10 wt. % hydrophobic material and having a D50 particle size of about 200 μm to about 800 μm with a second plurality of particles including calcium sulfate hemihydrate to form a combined mixture of calcium sulfate;adding water to the combined mixture of calcium sulfate to make an aqueous gypsum slurry;depositing a core layer including the aqueous gypsum slurry over a forming surface; andallowing the core layer to set, thereby forming a set gypsum core.