WO 2020/104002 A1

Use of CO2 as water demand reducer in gypsum stucco rehydration mortars

(22) 21.11.2018

(43) 28.05.2020

(57) The present application concerns a method for the production of a gypsum article, which comprises introducing a measured quantity of carbon dioxide into the process water and mixing the stucco with the thus treated water. The CO2-enriched water has the advantage of providing compositions with sufficient processing properties at considerably lower water contents, thus allowing for significant energy savings. The invention also concerns slurries prepared according to this method as well as an apparatus which is adapted to implement this method.

(71) Knauf Gips KG, Am Bahnhof 7, 97346 Iphofen (DE)

(84) ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)

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