Preparation of Corundum Based Composite Ceramics Using Bauxite Tailings and Vanadium−titanium Magnetite Tailings as Raw Materials

The corundum based composite ceramics were prepared via a high temperature sintering process, using the bauxite tailings and vanadium−titanium magnetite tailings as raw materials. The effects of vanadium−titanium magnetite tailings addition and sintering temperature on the phase composition, morphology, and mechanical properties of the as−prepared composite ceramics were investigated in detail. The results indicated that the best performances were observed with the content ratio of 9∶1 between bauxite tailings and vanadium−titanium magnetite, after sintering at 1 100 ℃ for 3 h. The optimized volume density, compressive strength, and flexural strength were 2.71 g/cm³, 276.9 MPa, and 67.3 MPa, respectively.