Study on Properties of ZrO2 Ceramic Material for Porous Media Burner

A kind of ZrO2 ceramic material for porous media burner was prepared by polymeric sponge process with starting materials of zircon,zirconia powder,microsilica,and ball clay,and binder of silica sol through reaction-sintering.The effects of microsilica addition on cold crushing strength and zirconia/zircon adding ratio on thermal shock resistance were studied.The results show that the porous media material has proper porosity,high strength,and excellent thermal shock resistance when zirconia addition is 85% and zircon addition is 5%.The performance indexes are:porosity 82%,cold crushing strength 3.1 MPa,thermal shock resistance more than 10 cycles,and good thermal shock resistance to 1500℃ flame.