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Blast furnace bottom

A blast furnace and furnace shell technology, applied in the field of blast furnace bottom, can solve problems such as poor cooling effect, achieve the effect of improving sealing performance and avoiding major accidents

Active Publication Date: 2016-09-28
HUATIAN ENG & TECH CORP MCC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this type of blast furnace bottom, if the grouting under the sealing plate is not dense, the cooling effect will be relatively poor

Method used

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] Such as image 3 As shown, the blast furnace bottom of the present invention includes an upper sealing plate 31 , a concrete foundation pier 4 and a lower sealing plate 32 arranged in the furnace shell 2 from top to bottom. The concrete pier 4, the upper sealing plate 31, the lower sealing plate 32, and the furnace shell 2 between the upper sealing plate and the lower sealing plate form a rigid box, which makes the structure of the blast furnace bottom more stable and is sufficient to resist the impact of the lower sealing plate. Upturning, the lower sealing plate is the bottom plate, so it is enough to resist the upturning of the bottom plate.

[0016] Since the upper sealing plate 31 and the lower sealing plate 32 of the present invention form two sealing lines of defense, it is sufficient to prevent gas leakage in the furnace and improve the sealing performa...

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Abstract

The invention discloses a blast furnace bottom and mainly provides the blast furnace bottom which is better in sealing performance and capable of preventing upward tilting of a blast furnace bottom plate and preventing the furnace bottom from being burnt through. The blast furnace bottom comprises a lower sealing plate, a concrete foundation pier and an upper sealing plate. A carbon ramming material is arranged between the concrete foundation pier and a furnace shell, and a cooling water pipe is arranged between the upper sealing plate and the upper surface of the concrete foundation pier. Two sealing defense lines of the blast furnace bottom are formed between the upper sealing plate and the lower sealing plate of the blast furnace bottom, and the sealing performance of the blast furnace bottom is improved. A rigid box body is formed by the concrete foundation pier, the upper sealing plate and the lower sealing plate. Compared with the prior art that only a furnace bottom is paved with carbon bricks above a bottom plate, upward tilting of the lower sealing plate can be better resisted, in other words, the upward tilting of the bottom plate is resisted. The cooling water pipe is arranged below the upper sealing plate, and great accidents occurring when the cooling water pipe of the furnace bottom is cracked, and consequently the furnace bottom is burnt through are avoided.

Description

technical field [0001] The invention relates to a blast furnace bottom. Background technique [0002] The blast furnace bottom is an important part of the blast furnace, and the sealing performance of the blast furnace bottom is very important to the blast furnace life, economic benefits and safe production. In recent years, due to the downturn in the steel market, in order to control costs, various iron and steel enterprises have used poor grades of furnace ores, and the content of harmful metals, especially alkali metals, lead, and zinc, is too high. Harmful metals are enriched in the furnace and corrode the lining. Abnormal expansion, causing the bottom plate of the blast furnace to warp. However, the upturning of the bottom plate may easily cause the bottom plate to crack, resulting in gas leakage, and at the same time, the overall structure of the furnace bottom refractory material will be damaged. Once the overall structure of the refractory material is damaged, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B7/04C21B7/00
CPCC21B7/00C21B7/04
Inventor 高成云孙华平
Owner HUATIAN ENG & TECH CORP MCC