| 摘要 |
PURPOSE:To provide a titled device which dries and heats uniformly lining refractories with good efficiency by the constitution wherein a heat transmitting and converting device consisting of an air-permeable, heat-resistant metal is provided in a pan for metallurgy, radiation heat is generated from the surface thereof and the flow of the combustion gas in the pan is made uniform. CONSTITUTION:A pan-shaped heat transmitting and converting device 13 consisting of an air permeable heat resistant metal or ceramic is provided in tight contact with a pan cover 6 in the upper space of a heating burner 7a positioned near the refractories 4 in the bottom of a ladle. An air piping 9a and fuel gas piping 10a for combustion connecting to the burner 7a are provided in said device. The combustion gas generated from the burner 7a forms flow 11 which dries and heats the refractories 4, brick masonry 5 in the corner part and lining refractories 3, whereafter the gas enters the device 13 and heats the device to a high temp. thereby generating radiation heat. The gas preheats further the air for combustion and gaseous fuel thus decreasing its temp. by itself. Such gas is discharged through a waste gas port 8. |
