CaO-SiO2-Fe2O3 solid waste ceramics were prepared from steel slag and waste clay bricks as the main raw materials with the aim of alleviating environmental pressure and reducing the production costs of porcelain tiles.The effects of heating rate on the microstructure and macroscopic mechanical properties of solid waste ceramic bricks were systematically studied by simultaneous thermal analysis (TG-DSC)

X-ray diffraction (XRD) and scanning electron microscopy (SEM).The results show that when the sintering temperature reaches 1 190 ℃

the water absorption rate of the ceramic specimen reaches an optimal value of 0.057%

and the flexural strength is significantly increased to 69.21 MPa. When the heating rate of is 25 ℃/min from 0 to 1 000 ℃ and 1.5 ℃/min from 1 000 to 1 190 ℃

the prepared ceramic specimen exhibits an optimal water absorption rate of 0.055% and a flexural strength of 72.45 MPa. The results of this paper provide valuable insights for the optimization of the preparation process of steel slag and waste clay brick ceramic materials.