A circular seam type gas supply element and gas supply method

Abstract

The invention discloses a ring-slit type gas supply element and a gas supply method, which belong to the field of metallurgy technology and solve the problem in the prior art that it is impossible to realize a thin slag layer, a slag-free layer or high-intensity gas injection under complex process conditions . The annular seam air supply element includes a central tube, an inner sleeve, an outer sleeve, an outer air chamber and an inner air chamber located in the outer air chamber. At least one inner annular seam is formed between the inner sleeve and the outer sleeve, at least one outer annular seam is formed, the inner annular seam communicates with the inner air chamber, and the outer annular seam communicates with the outer air chamber. The gas supply method is that the inner gas is sequentially injected into the molten metal pool of the metallurgical furnace through the inner gas chamber and the inner annular gap; and / or, the outer gas is injected into the molten metal pool of the metallurgical furnace through the outer gas chamber and the outer annular gap; The gas and outer gas are of the same or different types. The gas supply element and gas supply method of the invention can be used for high-intensity gas injection in metallurgical furnaces.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to an annular seam type gas supply element and a gas supply method. Background technique [0002] In metallurgical production, according to the requirements of the production process, the metallurgical furnace needs to pass various gases (nitrogen, argon, air, etc.) into the metal molten pool from the bottom and / or side walls to optimize the dynamic conditions of the metal molten pool , to achieve uniform composition, promote reaction, improve efficiency and other effects, among which, the efficient injection of gas is particularly important. [0003] The slag splash protection technology can generate a slag splash layer on the surface of the metallurgical furnace lining through slag splash coating, so as to protect the furnace lining and prolong the service life of the furnace. With the development of smelting technology, the demand for high-efficiency metallurgical...

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Problems solved by technology

[0005] In view of the above analysis, the present invention aims to provide a ring-shaped gas supply element and a gas supply method to solve the problems in the prior art that cannot realize thin slag layer, slag-free layer or high-intensity gas injection under complex process conditions. question

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