Efficient molten iron desulfurization spray gun

Abstract

The invention belongs to the field of molten iron pretreatment desulfurization equipment, and particularly relates to an efficient molten iron desulfurization spray gun, which comprises a mounting flange (1), an outer protective pipe (2), a center desulfurizing agent nozzle pipe (4) and a refractory material protection layer (3); a blowing medium input pipe (10) is fixedly arranged in the mounting flange (1) region; a blowing medium gap (5) is arranged between the outer protective pipe (2) and the center desulfurizing agent nozzle pipe (4); one end port of the blowing medium input pipe (10) is communicated with the blowing medium gap (5) ; a blowing medium gas distribution mechanism (6) is horizontally fixedly arranged in the tail region of the outer protective pipe (2); the blowing medium gas distribution mechanism (6) comprises a gas supplying chamber (7) and a blowing medium nozzle (8); and the blowing medium gap (5) and the gas supplying chamber (7) are communicated. The efficient molten iron desulfurization spray gun is ideal in desulfurization effect, strong in stirring force, and fast in desulfurization reaction speed.

Description

technical field [0001] The invention belongs to the field of molten iron pretreatment desulfurization equipment, in particular to a high-efficiency molten iron desulfurization spray gun. Background technique [0002] Desulfurization in the converter steelmaking process is carried out in an oxidizing atmosphere, and the depth of desulfurization has certain limitations. With the continuous development of the iron and steel industry, according to the different uses of steel, the sulfur content in steel is required to be lower and lower. Desulfurization in the converter steelmaking process alone cannot meet the sulfur requirements of steel types, such as ultra-low sulfur IF steel . Pretreatment desulfurization of molten iron before the molten iron enters the converter is a desulfurization method commonly used in the iron and steel industry. [0003] Hot metal pretreatment desulfurization is carried out in a reducing atmosphere, which is conducive to desulfurization, low desulf...

AI Technical Summary

Problems solved by technology

However, the single-channel molten iron desulfurization spray gun has a single direction of stirring force and insufficient stirring force, which will cause some desulfurization powder to float into the slag without participating in desulfurization, and some desulfurization products will not float up sufficiently and remain in the molten iron, failing to achieve desulfurization. Effect, the stirring force is weak, resulting in slow desulfurization reaction speed and low desulfurization efficiency

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