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A pressing system and its application for restraining the warping of the bottom plate of blast furnace

A technology of blast furnace furnace and bottom plate, which is applied in the direction of blast furnace, blast furnace details, blast furnace parts, etc., can solve problems such as safety hazards and economic losses, achieve stable blast furnace production, keep gas from leaking, and eliminate the problem of furnace bottom sealing plate warping effect of influence

Active Publication Date: 2017-04-26
MAANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Aiming at the problems in the prior art that the blast furnace bottom plate warping causes major safety hazards and major economic losses, the present invention provides a compacting system for suppressing the blast furnace bottom plate warping and its application

Method used

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  • A pressing system and its application for restraining the warping of the bottom plate of blast furnace
  • A pressing system and its application for restraining the warping of the bottom plate of blast furnace
  • A pressing system and its application for restraining the warping of the bottom plate of blast furnace

Examples

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Effect test

Embodiment 1

[0046] A kind of compacting system of this embodiment that suppresses the upturning of the bottom plate of the blast furnace, such as figure 1 As shown, it includes a pressing device 1, an annular retaining ring 2 and a pouring material 3; as figure 2 and 3 As shown, the main body section of the pressing device 1 is in the shape of a left-right asymmetric "earth", including a pressure plate 13 and a bottom plate 14 parallel to each other, and a bolt 11 fixedly connected to the bottom plate 14 after passing through the pressure plate 13; and through a nut 12 Adjust the height of the pressing plate 13; the bottom plate 14 of the pressing device 1 is inserted into the bottom of the upturned furnace bottom sealing plate 5, and is pressed on the top of the upturned furnace bottom sealing plate 5 through the pressing plate 13, and the rotating nut 12 compacts the upturned furnace bottom The sealing plate 5; the castable 3 is filled in the gap formed by the upturned furnace bottom ...

Embodiment 2

[0057] A compacting system of this embodiment that suppresses the upturning of the bottom plate of a blast furnace has the same basic structure as that of Embodiment 1, and the improvement is that the pressing plate 13, the bottom plate 14, the rib A15 and the rib B16 in the compacting device 1 are all Made from steel scraps. The self-flowing castable with high thermal conductivity is mixed with the following materials in parts by weight: SiC, 85 parts; aqueous binder, 25 parts; corundum, 15 parts; water reducer and dispersant, 1 part in total. After testing, the castable meets the parameter requirements, and the castable also has the characteristics of ①good fluidity, which meets the construction conditions; ②low line change rate.

Embodiment 3

[0059] A compacting system of this embodiment that suppresses the upturning of the blast furnace bottom plate has the same basic structure as that of Embodiment 1, except that the high thermal conductivity self-flowing castable is mixed with the following materials in parts by weight: SiC, 90 parts; containing water Adhesive, 30 parts; corundum, 19 parts; water reducer and dispersant, 1 part in total. After testing, the castable also meets the parameter requirements.

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Abstract

The invention discloses a pressing system restraining a blast furnace hearth plate from warping upwards and application thereof and belongs to the technical field of blast furnace equipment transformation. The pressing system comprises a pressing device, an annular check ring and castable material. The section of the main body of the pressing device is shaped like a Chinese character "tu" of a left-right asymmetry structure and comprises a pressing plate, a bottom plate and a bolt, wherein the pressing plate and the bottom plate are parallel, the bolt penetrates through the pressing plate so as to be fixedly connected to the bottom plate, and the height of the pressing plate is regulated by a nut. The bottom plate of the pressing device is inserted into the bottom of the blast furnace hearth plate warping upwards and presses on the top of a blast furnace hearth closing plate warping upwards through the pressing plate. The castable material fills the gap, formed by the blast furnace hearth closing plate warping upwards and the pressing device, in the furnace hearth. The annular check ring surrounds the outer side of the pressing device. According to the application of the pressing system, through the steps of calculating, laying, fixing, pressing, preparation before pouring, pouring, solidifying and the like, the influence caused by upward-warping of the blast furnace hearth closing plate is removed, production of a blast furnace is stabilized, various economic and technical indexes of production of the blast furnace are maintained, and the technological operation of the blast furnace is effectively guaranteed.

Description

technical field [0001] The invention belongs to the technical field of blast furnace equipment transformation, in particular to a compacting system for suppressing warping of the bottom plate of a blast furnace and its application. 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 sam...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B7/00
Inventor 廖海欧徐兆春李明亮陆强翟永辉
Owner MAANSHAN IRON & STEEL CO LTD
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