Study and Analysis on the High Temperature Performance of Calcined Bauxite

Abstract:

In order to further broaden the application field of calcined bauxite, using XRF and other testing technology to study and analysis on the high temperature performance of calcined bauxite in this paper. The results showed that the sintering temperature range was 1300 ~ 1650°C, the firing line shrinkage, bulk density, bending strength, heat capacity and thermal conductivity was increased gradually, the water absorption and porosity was decreased, the water absorption, volume density and flexural strength of the sample fired at 1650°C were 0.93%, 3.20 g·cm^-3 and 182.23 MPa, the specific heat and thermal conductivity were 0.83 kJ·(kg·K)^-1 and 9.21 W·(m·K)^-1. Due to the thermal performance of calcined bauxite is optimal, and is expected to be used for the field of high temperature solar thermal heat storage material.