Air cooling cyclonic magnesium agent desulphurization spray gun

Abstract

The invention belongs to the field of molten iron desulphurization equipment, and particularly relates to an air cooling cyclonic magnesium agent desulphurization spray gun which comprises a central spray pipe (1), an air cooling cyclonic stirring pipe (2), a refractory material layer (3), a protective pipe (5) and a framework (4), wherein the refractory material layer (3) is assembled on the external of the air cooling cyclonic stirring pipe (2), the central spray pipe (1) is arranged in the air cooling cyclonic stirring pipe (2), the air cooling cyclonic stirring pipe (2) is mounted in the protective pipe (5) in a sleeved mode, the framework (4) is located in the refractory material layer (3) and fixedly connected with the outer wall of the protective pipe (5), a vortex sheet (6) is fixedly arranged on the outer wall of the central spray pipe (1), and the framework (4) is in a net-shaped structure that transverse annular ribs are intersected and fixed with longitudinal ribs. The air cooling cyclonic magnesium agent desulphurization spray gun is simple in structure and convenient to maintain, can effective reduce melt spraying in the process of molten iron desulphurization, improves stress distribution of a gun body, and is high in desulphurization efficiency.

Description

technical field [0001] The invention belongs to the field of molten iron desulfurization equipment, in particular to an air-cooled cyclone type magnesium agent desulfurization spray gun. Background technique [0002] The desulfurization injection desulfurization technology outside the molten iron furnace has been widely used since its development in the 1950s. This technology can better adapt to various desulfurization agents, give full play to the desulfurization ability of the desulfurizer, and achieve excellent desulfurization effect. [0003] The molten iron desulfurization spray gun is generally composed of a central nozzle, a protective pipe, a refractory material layer, etc., and can be roughly divided into two types: single-channel type and multi-channel type according to the number of injection pipes. Because the spraying and stirring holes of the existing spray guns are basically concentrated in the head of the spray gun, it cannot effectively destroy the rising s...

AI Technical Summary

Problems solved by technology

Due to the fact that the spraying and mixing holes of the existing spray gun are basically concentrated in the head of the spray gun, it cannot effectively destroy the rising spray bubbles, and the spray holes are easy to block and difficult to maintain, which will cause the spray gun head to be corroded and the service life will be reduced

In addition, when the desulfurization spray gun is in the working state, due to the uneven distribution of the internal temperature field, different materials will be affected by factors such as stress conduction, which will cause the refractory material of the gun body to crack and fall off

Some spray gun heads have a desulfurization agent vaporization chamber to enhance the vaporization effect of the desulfurization agent and improve the desulfurization efficiency. However, due to the large vaporization chamber, it reduces the pressure of the tail nozzle, and it is easy to form large bubbles, resulting in melt spraying. splash

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