A converter oxygen lance insertion barrel

Abstract

The invention discloses a converter oxygen lance barrel which comprises a barrel body installed on a furnace mouth flue. The barrel body is formed by jacketing an inner pipe and an outer pipe. Several first nozzle clusters formed by several jet pipes uniformly sleeve the outer pipe of the barrel body from top to bottom. A nozzle of a first jet pipe in each first nozzle cluster extends into the inner pipe from the outer pipe of the barrel body. Several second jet pipes are uniformly distributed along the circumference of the barrel body in an interlayer formed by the inner pipe and the outer pipe of the barrel body. Nozzles of all the second jet pipes extend downwards out of the bottom of the barrel body. All the first jet pipes and second jet pipes are simultaneously communicated with a waterway, a steam pocket and a nitrogen storage tank respectively through connecting lines. The converter oxygen lance barrel provided by the invention has advantages as follows: service life of the converter oxygen lance barrel is long; production and use safety is high; and slag-bonding on the inner wall and bottom of the barrel can be prevented.

Description

technical field [0001] The invention relates to a converter oxygen lance insertion barrel. Background technique [0002] In the steelmaking industry, the oxygen lance used for blowing extends into the converter along the converter oxygen lance tube installed on the flue of the furnace mouth above the converter. The working station of the oxygen lance generally has the oxygen lance waiting position , Oxygen lance opening and closing oxygen point station and oxygen lance blowing station, the working process of the oxygen lance is as follows: when the initial state does not need to blow oxygen to the converter, the oxygen lance stays at the oxygen lance waiting position to wait; when the oxygen lance When the oxygen lance is lowered to the opening and closing position of the oxygen lance, the oxygen lance starts to supply oxygen. When the oxygen lance continues to descend to the blowing station of the oxygen lance, the oxygen lance starts to blow the converter; after blowing, t...

AI Technical Summary

Problems solved by technology

The converter oxygen lance tube currently used is a common circular pipe structure. The disadvantage of this converter oxygen lance tube is that the converter will produce flue gas containing a large amount of impurities during the blowing process. Impurities are easy to adhere to the inner wall and bottom of the converter oxygen lance insertion tube. The impurities in the flue gas adhere to the inner wall and bottom of the converter oxygen lance insertion tube and are easy to slag. At the same time, the steel slag floating on the surface of molten steel in the converter Under the action of the upward hot airflow generated by converter blowing, it is also very easy to splash on the bottom of the converter oxygen lance tube. These steel slags are also easy to slag after splashing on the bottom of the converter oxygen lance tube, which not only reduces the oxygen consumption of the converter. The service life of the gun barrel is also a hidden danger for safe production

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