Abstract:In this paper, red mud, desulfuration gypsum and limestone as the main raw material to burn the high belite sulphoaluminate cement clinker that its main mineral phase is calcium silicate (C₂S) and anhydrous sulphoaluminate calcium (C₄A₃). The temperature, calcination time and the ratio of raw materials and other factors affect the burning of clinker were researched. The results revealed that the optimum temperature is 1280 ℃, calcination time is 30min. And the mechanical properties of burned clinker have been tested, which has good early strength, and high belite mineral composition ensured the steady growth of the late strength. The content of C₂S 45% ~ 55% and the content of C₄A₃20% to 30% has good resistance to compressive strength, while 28d strength can be up to 48.2MPa. The main hydration products are ettringite (AFt) and C-S-H gel, and minor amount of monosulfate (AFm) and aluminium hydroxide (AH₃) is also observed.