Molten iron pure spray particle magnesium desulfurization spray gun with vaporizing chamber in spearhead and preparation method of molten iron pure spray particle magnesium desulfurization spray gun

A technology for desulfurization spray gun and gasification chamber, which is applied in the field of molten iron pure injection granular magnesium desulfurization spray gun and its preparation field, can solve the problems of difficulty in cleaning the sticky slag on the inner wall of the gasification chamber, blockage, unstable exhaust gas at the side outlet, etc., and achieves improvement. Effects of homogeneous desulfurization reaction kinetic conditions, increasing contact area, and improvement of hot metal desulfurization reaction kinetic conditions

Inactive Publication Date: 2015-02-11
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, judging from the structure of the patent, the 2 to 12 outlets on the side wall of the spray gun are easily blocked by the sticky slag on the inner wall of the gasification chamber, resulting in unstable exhaust at the side outlet, and at the same time causing problems for the cleaning o

Method used

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  • Molten iron pure spray particle magnesium desulfurization spray gun with vaporizing chamber in spearhead and preparation method of molten iron pure spray particle magnesium desulfurization spray gun
  • Molten iron pure spray particle magnesium desulfurization spray gun with vaporizing chamber in spearhead and preparation method of molten iron pure spray particle magnesium desulfurization spray gun
  • Molten iron pure spray particle magnesium desulfurization spray gun with vaporizing chamber in spearhead and preparation method of molten iron pure spray particle magnesium desulfurization spray gun

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Such as Figure 1~4 As shown, a molten iron pure spray particle magnesium desulfurization spray gun with a gasification chamber on the gun head includes a connecting flange 1 connected in sequence, a gun barrel 2 and a gun head spraying gasification chamber 3, and the gun barrel 2 is composed of a connecting section gun The tube 2.1 and the gun barrel 2.2 of the gun body section are composed, the connecting section gun barrel 2.1 is composed of the inserted blowing pipe 4 and the gun core 5, and the gun body section gun barrel 2.2 is composed of the inserted blowing tube 4 and the gun core 5, the anchor member group 6 and the refractory casting The lining consists of 7,

[0056] From the inside to the outside of the gun core 5 are the main tube 5.1 and the reinforcing tube 5.2 in sequence. The outer side of the main tube 5.1 takes the axis as the centerline and evenly arranges a plurality of bridge welding parts 5.3 for connecting the reinforcing tube 5.2 in a radial sh...

Embodiment 2

[0075] Such as Figure 5-7 As shown: the structure of the spray gun in this embodiment is basically the same as that of the spray gun in Embodiment 1, the difference is that: the lower end of the gasification chamber bell jar 8 is provided with a bottom skirt 3.1, and the bottom skirt 3.1 is uniformly arranged with 5 rows Gas port 3.2, at the same time, the preparation method of the spray gun is different: the specific difference is in the following steps:

[0076] 3) Select axial and circumferential steel plates, steel bars or steel rods, and stack welding to prepare steel frame reinforced tube 5.2, steel frame reinforced tube 5.2 directly welds bridge weldment 5.3; filling material 5.4 is refractory casting containing carbon material or powdered refractory filler;

[0077] 4) Use longitudinal and circumferential steel plates, steel rods or steel rods of appropriate size, laminated and welded to prepare the side wall frame, select a thick-walled steel plate of appropriate si...

Embodiment 3

[0079] Such as figure 1 , 3 , 8, and 9, the structure of the spray gun in this embodiment is basically the same as the structure of the spray gun in Embodiment 1, the difference is that the cross-section of the spraying gasification chamber 3 of the gun head is elliptical, and the corresponding gasification chamber bell jar 8 1. The annular anchor 6.3 in the gasification chamber area and the bottom skirt 3.1 of the gasification chamber are also elliptical, and two exhaust ports 3.2 are opened symmetrically with the short axis in the direction of the oval long axis bottom skirt 3.1. Between the gun barrel 2.2 and the gasification chamber 3 is a circular to elliptical transition section.

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Abstract

The invention discloses a molten iron pure spray particle magnesium desulfurization spray gun with a vaporizing chamber in a spearhead. The molten iron pure spray particle magnesium desulfurization spray gun comprises a connecting flange, a gun-barrel and a spearhead blowing vaporizing chamber, which are sequentially connected and communicated with each other, wherein the spearhead blowing vaporizing chamber is sequentially composed of a vaporizing chamber bell jar, an anchoring part group and a refractory castable lining from inside to outside; a bottom skirt is arranged at the lower end of the vaporizing chamber bell jar; and a plurality of air outlets are evenly formed in the bottom skirt in an emission shape. The method comprises the following steps: selecting a metal material to process and fabricate each component of the spray gun and removing rust for later use according to structural parameters of the spray gun; sequentially preparing a gun core and the vaporizing chamber bell jar; connecting the gun core and the vaporizing chamber bell jar by welding; and welding a reinforcing rib plate in a gap among the lower end of the gun core, the top of the vaporizing chamber bell jar and the refractory castable lining; and finally welding the anchoring part group, and pouring to obtain the spray gun. Compared with a conventional vaporizing chamber spray gun, the molten iron pure spray particle magnesium desulfurization spray gun disclosed by the invention has the advantages of being simple in structure, stable to blow, low in cost, efficient in desulfurization, long in service life and the like.

Description

technical field [0001] The invention relates to the field of molten iron pretreatment, in particular to a molten iron pure spray granular magnesium desulfurization spray gun with a gasification chamber on the gun head and a preparation method thereof. Background technique [0002] There is a very high affinity between metallic magnesium and sulfur. During the desulfurization process of metallic magnesium, the desulfurization reaction of metallic magnesium is mainly completed by the homogeneous reaction of metallic magnesium and sulfur dissolved in molten iron, which is the strongest desulfurization of molten iron. One of the desulfurizers, it has the advantages of less consumption, slag amount, less iron loss and less environmental pollution. Because the existence of slag does not affect the homogeneous desulfurization reaction of magnesium, it is not sensitive to blast furnace slag in molten iron; because the amount of magnesium used for desulfurization is small, the invest...

Claims

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Application Information

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IPC IPC(8): C21C1/02
Inventor 欧阳德刚洪军李明晖罗安智王清方
Owner 武汉钢铁有限公司
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