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Floating main trough

A floating layer and sliding plate technology, applied in discharge devices and other directions, can solve problems such as refractory failure, steel shell cracks, disaster accidents, etc., to avoid cracks and spalling, prevent further leakage, and avoid iron leakage accidents.

Inactive Publication Date: 2005-11-02
ALLIED MINERAL PRODS TIANJIN
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The deformation of the steel shell under continuous high temperature will cause cracks in the steel shell itself or cracking of the welding points, which will eventually lead to catastrophic accidents
Moreover, the deformed or cracked steel shell will cause internal cracks in the refractory material, and air will enter through it, causing oxidation of the refractory material, eventually leading to failure of the entire refractory material system

Method used

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  • Floating main trough
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Examples

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Embodiment Construction

[0032] The floating main groove of the present invention will be described below with reference to accompanying drawings 2-4.

[0033] The floating structure of the floating main ditch of the present invention includes two parts. On the one hand, it is the floating between the steel shell of the main ditch and the furnace body of the blast furnace, the taphole, the slag outlet and the supporting ground; An integral "loose" safety backing is formed between the material and the steel shell, so that the castable of the working layer can float relative to the steel shell.

[0034] First, the floating of the steel shell of the main trench relative to the ground is introduced.

[0035] Referring to Fig. 2, the main ditch steel shell 105 is completely separated from the blast furnace body, taphole, slag tap and the ground, instead of welding or bolting the steel shell to the blast furnace shell or tapping as in the prior art. field, and leave enough movement clearance, which helps t...

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Abstract

A floating main-groove contains steel shell and operating layer cast material lying on the inboard of main-groove. Operating layer cast material is contacted with melted iron while steel shell is used to support the main-groove, and steel shell is separated from blast-furnace furnace wall, iron notch and slag hole, also there is a floating layer between steel shell and supporting ground. The main-groove steel shell can improve the safety, reliability and maintainability of main-groove and all its fireproof material backing, and can avoid many defects and problems appearing in traditional main-groove design.

Description

technical field [0001] The invention relates to a tapping chute, in particular to a tapping chute of a blast furnace. Background technique [0002] The blast furnace is the main equipment for smelting pig iron, iron for castings and iron for steelmaking. After the reduction reaction in the blast furnace, the iron ore is reduced to metallic iron. At this time, the state of the iron is a molten iron and slag. Metal molten iron is the main product of the blast furnace, and slag is a by-product of the iron smelting process. Slag is made up of impurities in the ironmaking raw materials and fluxes added to aid in the smelting process. [0003] The blast furnace smelting process is a continuous production process, and the slag-iron mixture is separated from iron by tapping. In order to achieve the purpose of separating slag and iron, blast furnaces are generally equipped with one to four tapholes. During the blast furnace tapping process, molten slag and iron flow into the blas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B7/14
Inventor R·G·布伦尼曼V·D·雷斯蒂沃
Owner ALLIED MINERAL PRODS TIANJIN
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