Change Mechanism in Property and Microstructure of Magnesite-chrome Brick for Use in Super H-T Tunnel Kiln

摘要

On the basis of determination of property and microstructure of two kinds of primary MgO-Cr_2O_3 bricks and residual magnesite-chrome bricks for super H-T tunnel kiln, combining with the both residual bricks' application result, the paper expounds the change mechanism of the two kinds of magnesite-chrome bricks during the operation period, especially stresses the advantages of low Cr_2O_3 MgO-Cr_2O_3 bricks.