Effect of Pyrophyllite Particle Size on Properties of Al2O3-SiC-C Bricks for Iron Ladles

摘要

The Al2O3-SiC-C bricks for iron ladles were prepared using bauxite,fused corundum,pyrophyllite,SiC powder and flake graphite as main starting materials, and phenolic resin as binder. The effect of pyrophyllite particle size on permanent change in dimensions,cold crushing strength,oxidation resistance,and corrosion resistance of Al2O3-SiC-C bricks was investigated. The results show that with the decrease of the pyrophyl-lite particle size,the permanent change in dimensions of Al2O3-SiC-C bricks decreases, cold crushing strength increases,the oxidation resistance at 1 400 ℃ increases,and the corrosion resistance at 1 500 ℃ decreases.