LOW-TEMPERATURE BURNT PORTLAND CEMENT CLINKER USING MINERALIZER

摘要

Decreasing the burning temperature of cement clinkers leads to a rational reduction of CO_2 emitted from the cement industries. This study examines the use of CaF_2 and CaSO_4 as a mineralizer or flux. It was possible to reduce the burning temperature 100 °C below that of the current process (1450 °C) by controlling the fluorine and sulfur trioxide in the clinker. The setting and hardening properties of the low-temperature cement equal those of ordinary Portland cement. It was also found that the coating effect of additional mineralizer components on the preheater was insignificant.