Method and device for quickly repairing convertor tap hole

Abstract

The invention relates to the field of convertor steelmaking, in particular to a method and a device for quickly repairing a convertor tap hole. The method is characterized by comprising the steps of adopting a steel cylinder as a support body of a repairing material, placing the steel cylinder into the tap hole to be repaired, welding the steel cylinder with a convertor shell at the tap hole on the outer side of a convertor body, filling a gap between the steel cylinder and a casing brick with the repairing material, tamping, tightly combining the repairing material with the casing brick, and finally adopting flame sintering and natural sintering to accomplish repairing operation. The steel cylinder is characterized in that the diameter of the steel cylinder is same as that of the tap hole; the length of the steel cylinder is 1.05-1.15 times that of the tap hole; and steel columns are welded at the periphery of the steel cylinder uniformly. Compared with the prior art, the method and the device have the benefits that a maintenance manner of the tap hole is improved; with the adoption of the method, the tap hole can be maintained effectively; the service life of the tap hole is prolonged, and can be prolonged by more than 30 times; and the consumption of refractory materials is lowered effectively.

Description

technical field [0001] The invention relates to the field of converter steelmaking, in particular to a method and a device for rapidly repairing a taphole of a converter. Background technique [0002] With the erosion and erosion of molten steel and steel slag during use, the tap hole of the converter gradually expands or becomes shorter in length, and needs to be replaced or repaired to a certain extent. If the steel grade requires low carbon content or high FeO content in the tapping slag, it will affect the life of the tapping port. If the life of the tapping port is too short, it will affect the production capacity of the converter. At the same time, the frequent replacement of the tapping port will also cause the consumption of refractory materials. Increase. At present, the maintenance method of the tapping hole mainly uses repairing material to repair the inner or outer opening of the tapping hole, or spraying the inner diameter of the tapping hole with a spray gun. ...

AI Technical Summary

Problems solved by technology

If the steel type requires low carbon content or high FeO content in tapping slag, it will affect the life of the tapping hole. If the life of the tapping hole is too short, it will affect the performance of the converter's production capacity. At the same time, frequent replacement of the tapping hole will also cause consumption of refractory materials. Increase

At present, the maintenance method of the tapping hole is mainly to use repairing material to repair the inner or outer opening of the tapping hole, or use a spray gun to repair the inner diameter of the tapping hole. The disadvantage is that the gunning material cannot be as effective as the original casing brick. Combined, so repaired tap hole life is lower

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