Hot metal pretreatment long-service-life spray gun

A technology for molten iron pretreatment and longevity, which is applied in the field of molten iron pretreatment and longevity spray guns, can solve the problems of unusable, short service life and high cost, and achieves the effects of not easy ablation, long service life and low cost
CN101914656AInactive Publication Date: 2010-12-15通化耐博耐火材料有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
通化耐博耐火材料有限责任公司
Publication Date
2010-12-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a steel mill blast furnace hot metal pretreatment tool, in particular to a hot metal pretreatment long-service-life spray gun. The hot metal pretreatment long-service-life spray gun comprises a gun body and a vaporizing chamber positioned at the lower part of the gun body, wherein the vaporizing chamber comprises an inner side and an outer side which are formed by a heat resistant steel skeleton and a poured refractory material. The whole alloy steel structure of the vaporizing chamber is changed; heat resistant stainless steel reinforcement is welded into the skeleton and poured into the vaporizing chamber formed by the refractory material; and because the steel reinforcement is arranged in the refractory material, not in direct contact with hot metal and difficult to be ablated, the hot metal pretreatment long-service life spray gun has longer service life which commonly can reach more than 200 times and low cost, improves the service life by more than 3 times compared with the common spray gun and completely can meet the requirement of production.
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Description

technical field

[0001] The invention relates to a blast furnace molten iron pretreatment tool in a steel plant, namely a long-life spray gun for molten iron pretreatment. Background technique

[0002] In the existing technology, when the molten iron filled with molten iron in the steel plant enters the desulfurization station, the spray gun will plunge into the molten iron in the molten iron tank on the track, and the high-pressure nitrogen will spray passivated magnesium powder to react with the sulfur in the molten iron. Purify the molten iron to produce high-purity alloy steel and high-quality steel. The molten iron desulfurization spray gun is composed of the gun body and the gasification chamber at its lower part. The gasification chamber is processed by alloy steel. After processing, it is welded into one body and then molded in a special mold with castables. It is used after baking. The outer side of the gasification chamber is protected by refractory materials, and ...

Claims

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