Development of Magnesia-Chrome Bricks for Tuyeres in AOD Vessels

摘要

Wear mechanism and evaluation method of magnesia-chrome bricks for AOD vessels are discussed. The bricks are subjected to turbulent liquid steel-gas-slag in the bath, they should have well-developed bonding texture and high hot strength. Newly-developed high purity rebounded bricks for tuyeres have dense texture characterized by low permeability and small pore size, they show excellent performance.