Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
METHOD FOR RECLAIMING GYPSUM FROM WASTED GYPSUM BOARDS
Wasted gypsum boards are crushed and heated to convert semi-hydrated gypsum and/or anhydrous type III gypsum, and the obtained semi-hydrated gypsum and/or anhydrous type III gypsum is mixed with gypsum slurry. The gypsum slurry is solid/liquid separated by a filtration device into gypsum particles and filtrate which has passed through the filter cloth of the filtration device. The filtrate is returned into the gypsum slurry. The solid/liquid separation is performed such that the concentration of the suspended solid in the filtrate that has passed through the filter cloth and consists of gypsum granules and inorganic impurities derived from wasted gypsum boards is made 1000 to 8000 mass ppm. The clogging of the filter cloth is reduced.
METHOD FOR RECLAIMING GYPSUM FROM WASTED GYPSUM BOARDS
Wasted gypsum boards are crushed and heated to convert semi-hydrated gypsum and/or anhydrous type III gypsum, and the obtained semi-hydrated gypsum and/or anhydrous type III gypsum is mixed with gypsum slurry. The gypsum slurry is solid/liquid separated by a filtration device into gypsum particles and filtrate which has passed through the filter cloth of the filtration device. The filtrate is returned into the gypsum slurry. The solid/liquid separation is performed such that the concentration of the suspended solid in the filtrate that has passed through the filter cloth and consists of gypsum granules and inorganic impurities derived from wasted gypsum boards is made 1000 to 8000 mass ppm. The clogging of the filter cloth is reduced.
METHOD FOR RECLAIMING GYPSUM FROM WASTED GYPSUM BOARDS
HIRANAKA SHINGO (Autor:in)
02.05.2024
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME