WO 2021/001781 A1


(22) 02.07.2020

(43) 07.01.2021

(57) The present invention relates to clinker, in particular cement clinker. The invention provides a method of preparing clinker and extends to clinker prepared in accordance with the method of the invention. The method of producing the clinker includes fts‘‘ heat treating a mixture of synthetic gypsum, shale and a carbon reductant.

(71) Circle Seven Trading 997 CC, 14 Wingen Walk, Shallcross, Durban, 4093 Kwazulu-Natal (ZA)

(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, 1E, 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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