Analysis on the Mechanism of Abnormal Temperature Rise in WISCO's Hearth of BF #4
The abnormal increase in temperature of hearth sidewall of BF #4 at WISCO was mainly due to the existence of gap cap between the carbon bricks and the furnace shell,the poor conduction of heat because of the influxes of gas,and the direction contact between hot metal and the carbon bricks due to the intensification of the circulation of slag-iron in the ar-ea of taphole and the detachment of the slag-iron protective layer in the hot surface of the carbon bricks.Across to grou-ting,the cross gas was controlled and the temperature of the furnace hearth returned to normal benefited from the formation of slag-iron protective layer.