Red mud is used in cement production, mainly concentrated in the preparation of cement clinker, the production of composite cement, and the production of alkali-activated cement in three directions. Dai Jian used limestone, fly ash, Bayer red mud, bauxite and natural gypsum as raw materials to prepare cement clinker at 1310 ℃ for 60 minutes, mixed with red mud at a mass fraction of 10.05%