The Role of Brownmillerite in Preparation of High-Belite Sulfoaluminate Cement Clinker

High-belite sulfoaluminate cement (HBSC) clinker containing brownmillerite was prepared using the industrial raw materials limestone, aluminum tailings, ore waste rock, and anhydrite. The effect of on sintering minerals mechanical performance HBSC investigated thermal analysis, petrographic quantitative X-ray diffraction (QXRD). Results indicated that promoted formation stabilized calcium (C4A3$) through substitution Fe3+ for Al3+ in C4A3$, which increased actual C4A3$ content decreased compared to designed theoretical mineral composition. However, early compressive strength pastes with increase due decrease total amount early-strength minerals. Brownmillerite also influenced belite (C2S) structures γ-C2S poor hydration activity, thus inhibiting development pastes. proper can ensure