| 摘要 |
PURPOSE:To lighten a preheating gas blowing device and to quickly keep up with variety of the furnace condition, by arranging plural pieces of burners having fuel gas supplying pipe, oxygen supplying pipe and gas introducing pipe for controlling gas temp. at a shaft part. CONSTITUTION:The preheating gas blowing device from the shaft part is composed of plural pieces of the burner body 8 having the fuel gas supplying pipe 1, oxygen supplying pipe 2 and gas introducing pipe 5 for controlling gas temp. and pilot burner 9 is arranged at the position of injecting hole of oxygen. Further, supplying water tube 3 and discharging water tube 4 for cooling water are arranged in the burner body 8 and in case of using 100 for the height from stock line to the tuyere, the gas burner body 8 is set at the position of about 40 from the upper part. In this way, the preheating gas blowing device providing the burner having comparatively simple construction is obtd.
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