Vehicle type baking device for continuous casting tundish nozzles

Abstract

The invention discloses a vehicle type baking device for continuous casting tundish nozzles. The vehicle type baking device has the advantages that wind energy is transmitted through a jet negative-pressure sucker by the aid of negative-pressure principles, so that waste heat and flame in tundish can be sucked from nozzle holes when the tundish is baked, and the nozzles can be uniformly heated from top to bottom until the temperatures of the nozzles reach steel pouring temperatures; the nozzles not only can be uniformly heated, but also can be quickly heated, the measured temperatures of the nozzles can reach 800 DEG C at least in 1.2-1.5 hours, steel can be smoothly poured, the liquid steel yield can be increased, the bottom of the tundish can be prevented from being directly sprayed and baked by the flame to deform, the service life of the tundish can be prolonged, potential safety hazards can be reduced, production can be smoothly carried out, nozzle baking field environments can be improved, radiation and smoke dust pollution can be completely eradicated, particularly, physical injury to workers due to residual gas can be prevented, the vehicle type baking device is simple in operation and is convenient, speedy, safe and reliable, energy can be saved, and consumption can be reduced.

Description

technical field [0001] The invention belongs to the technical field of energy saving of metallurgical equipment, namely, a continuous casting tundish nozzle car-type baking device in a steelmaking plant. Background technique [0002] For many years, the method of baking the nozzle of the continuous casting tundish in the steelmaking plant is to use the gas flame to match the air to support the combustion, and directly spray the lower end of the nozzle at the bottom of the tundish. Even, it is very easy to cause explosion and even cause accidents. 2. The bottom of the tundish is deformed due to direct fire spraying and baking on the bottom of the tundish, which requires frequent repairs and even replacement of the bottom of the tundish, reducing the service life of the tundish. 3. Flame radiation and a large amount of residual gas pollute the site environment and damage the health of operators. 4. Due to the long baking time of the nozzle and the low temperature (about 3.5-...

AI Technical Summary

Problems solved by technology

[0002] For many years, the method of baking the nozzle of the continuous casting tundish in the steelmaking plant is to use the gas flame to match the air to support the combustion, and directly spray the lower end of the nozzle at the bottom of the tundish. Even, it is very easy to cause explosion and even cause accidents

2. The bottom of the tundish is deformed due to direct fire spraying and baking on the bottom of the tundish, which requires frequent repairs and replacement of the bottom of the tundish, reducing the service life of the tundish

3. Flame radiation and a large amount of residual gas pollute the site environment and damage the health of operators

4. Due to the long baking time of the nozzle and the low temperature (about 3.5-4 hours, 450-600°C), it is difficult to start pouring. It is necessary to use a tank to let go of a molten steel, about 3-5 tons / time, and it must be the first three times. To increase the tapping temperature of furnace steel, it will consume about 900 degrees more electricity per time

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