WO 2016/206785 A1

Mineralizer for calcium sulfoaluminate ternesite cements

(22) 16.06.2016

(43) 29.12.2016

(57) The present invention relates to a method for the production calcium sulfoaluminate (belite, ferrite) ternesite clinker using fluxes/mineralizers comprising the following steps: providing a raw meal comprising at least sources of CaO, SiO2, AI203, SO3, sintering the raw meal in a kiln at >1200 to 1400 °C to provide a clinker, cooling the clinker, wherein a mineralizer comprising at least one compound containing chrome is added prior to sintering providing an amount of chrome calculated as Cr203 of at least 500 mg/kg in the raw meal. The invention further relates to the clinker obtained, as well as to calcium sulfoaluminate (belite, ferrite) ternesite cements and binders produced from the clinker.

(71) HeidelbergCement AG, Berliner Str. 6, 69120 Heidelberg (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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