| 摘要 |
The invention discloses a rapid-hardening high-belite calcium sulfoaluminate cement clinker and relates generally to a rapid-hardening high-belite calcium sulfoaluminate cement clinker and methods to use and to manufacture the clinker. The clinker of the present invention comprises 20% to 35% by weight of C 4 A 3 S , 3% to 9% by weight of C 4 AF, 37% to 47% by weight of C 2 S, 0.5% to 4.6% by weight of f-CaO and 14% to 26.3% by weight of CaSO 4 . The chemical compositions of the clinker are 12.9% to 16.1% by weight of SiO 2 , 12% to 19% by weight of Al 2 O, 1% to 3% by weight of Fe 2 O 3 , 49% to 54% by weight of CaO and 12% to 18.43% by weight of SO 3 . It is manufactured by calcining, at a temperature of 1300°C±50°C in a rotary kiln, the raw meal, comprising 33% to 62% by weight of limestone, 10.5% to 28% by weight of fly ash, and 19% to 45% by weight of FGD gypsum. A group of rapid-hardening high-strength cements of various strength classes can be manufactured by mixing and grinding 26% to 97% by weight of clinker, 3% to 19% by weight of anhydrite and 0% to 55% by weight of granulated blast furnace slag. |
