STUDY ON THE WEAR OF HOT BLAST STOVES OF 100 m3 BLAST FURNACE.

Through investigation on the destruction of hot blast stoves of a 100 m**3 blast furnace, it is clear that the damage of 4 hot stoves in the Bayi Steelworks is mainly due to the large amount of dusting powder containing alkali metals and Fe//2O//3 entrained in the gas and blast and the high blast temperature of above 1300 degree C, which cause the slagging of the spring arch of the stove and the checker bricks. The structural components of the stove grates and pillars are wrecked by the oxidation-reduction reaction, failing to stand up to concentrated stresses from all directions under long-term high temperatures and eventually resulting in a burning-through and/or bending deformation.