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Fire resistive material for desulfurization spray gun and producing technique for the desulfurization spray gun

A technology of desulfurization spray gun and refractory materials, which is applied in the field of refractory materials, can solve the problems of poor stability and low service life, and achieve the effects of good thermal stability, small reburning shrinkage rate, and good high-temperature strength

Inactive Publication Date: 2008-03-26
CHONGQING IRON & STEEL (GRP) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the disadvantages of low service life and poor stability of existing desulfurization spray guns poured with refractory materials, the purpose of this invention is to provide a refractory material for desulfurization spray guns that can greatly improve the service life and stability of desulfurization spray guns

Method used

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  • Fire resistive material for desulfurization spray gun and producing technique for the desulfurization spray gun

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Embodiment Construction

[0051] The present invention is described in detail below in conjunction with embodiment.

[0052] At present, the short service life and poor stability of desulfurization spray guns are the biggest disadvantages of this kind of products. The present invention effectively improves the service life of desulfurization spray guns through the improvement and innovation of material, pouring method, structure and baking. As for the material, the present invention starts with improving the quality of the raw material, improves the purity of the raw material, changes the microstructure of the raw material used, and adjusts the composition of the raw material, thereby prolonging the life of the product.

[0053] The main raw materials of refractory materials used in this desulfurization spray gun are: fused mullite, andalusite, plate-shaped corundum powder, α-Al 2 o 3 Micropowder, SiO 2 Micropowder, kyanite, steel fiber, 95 # Flake graphite, cement, spinel fine powder, and the refra...

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Abstract

The present invention discloses one kind of refractory material for desulfurizing spray gun, and the refractory material has the main raw materials including electrocast mullite, andalusite, alundum powder, fine alpha-Al2O3 powder, fine SiO2 powder, kyanite, steel fiber, 95# flake graphite, cement and fine spinelle powder. The refractory material is cast to desulfurizing spray gun vertically in two sections, one slag line section and one non-slag line section. The spray gun thus produced has high heat stability, low reburning shrinkage, high mechanical strength, excellent wear resistance, compact structure, low ferric oxide content, great high temperature strength and long service life.

Description

technical field [0001] The invention relates to a refractory material, in particular to a refractory material for a desulfurization spray gun. The desulfurization spray gun is mainly used for pretreatment desulfurization of molten iron. The invention also relates to the production process of the desulfurization spray gun. Background technique [0002] As a kind of metallurgical equipment, the desulfurization spray gun is mainly used in the pretreatment process of molten iron. As a bridge connecting steelmaking and blast furnace, the pretreatment of molten iron is an important technological means to improve the quality of steel products, expand steel varieties, reduce costs, and optimize the steelmaking process. In the past ten years, it has developed rapidly at home and abroad. As desulfurization is a very important task in the pretreatment process of molten iron, the desulfurization spray gun has become an important part of the molten iron pretreatment equipment, and it ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 陈浩陶权邱家富
Owner CHONGQING IRON & STEEL (GRP) CO LTD
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