Desulfurization spray gun

Abstract

The invention belongs to the field of molten iron desulfurization treatment devices and in particular relates to a desulfurization spray gun. The spray gun comprises a gun body (2), a pipeline (1), refractory material layers (4), frameworks (3) and a plurality of ring-shaped ribs (5), wherein the frameworks (3) are arranged in the refractory material layers and are fixedly connected with the pipeline (1); the ring-shaped ribs (5) are fixedly connected with the pipeline (1) by transverse ribs (6); the bottom of the pipeline (1) is fixedly provided with a stable pile (7); the ring-shaped ribs (5) are in the shape of concentric rings; a protective layer (8) is arranged outside the refractory material layers (4); eagle claw shaped frameworks (9) are fixedly arranged on the transverse ribs (6); and the outlet end of the pipeline (1) is of horn mouth structure. The spray gun has the following beneficial effects: the spray gun has simple structure and low operation cost; the refractory materials and the gun body frameworks have high stability; the gun body frameworks are not liable to mechanical deformation; and the gun body has long service life.

Description

technical field [0001] The invention belongs to the field of molten iron desulfurization treatment devices, and in particular relates to a desulfurization spray gun. Background technique [0002] At present, before steelmaking in the smelting industry, it is generally necessary to carry out desulfurization pretreatment on molten iron, and the main equipment used in the above process is the desulfurization spray gun. Due to the fact that the existing hot metal desulfurization spray gun does not fully consider the difference in physical properties between the pipeline and the refractory material layer in the design of the skeleton and the gun body, when the spray gun is used in an alternating state of cold and hot, the refractory material layer is likely to cause cracking and falling off. In addition, due to the low degree of stability between the refractory material and the frame of the gun body and the eccentricity of the frame of the gun body, the actual operation of the eq...

AI Technical Summary

Problems solved by technology

Due to the fact that the existing molten iron desulfurization spray gun does not fully consider the difference in physical properties between the pipeline and the refractory material layer in the design of the skeleton and the gun body, when the spray gun is used in an alternating state of cold and hot, the refractory material layer is likely to cause cracking and falling off.

In addition, due to the low degree of stability between the refractory material and the frame of the gun body, and the eccentricity of the frame of the gun body, the actual operation of the equipment has the characteristics of failure of the refractory material layer, mechanical deformation of the frame of the gun body, and short life of the gun body.

Due to the above shortcomings, desulfurization outside the furnace cannot be carried out smoothly, especially in large (equal to or greater than 160t) ladles, the structural defects are more obvious

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