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a method of building

A technology of masonry and carbon bricks, which is applied in the direction of furnaces, furnace types, blast furnace parts, etc., can solve the problems of reducing stave protection, accelerating carbon brick erosion, and shortening life, so as to prevent air gaps, prolong carbon brick life, Eliminates the effect of scour erosion

Active Publication Date: 2019-01-08
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current problem is: when the cooling equipment is damaged during the production process, because the cooling water pressure of the cooling equipment is higher than the internal pressure of the blast furnace, the cooling water leaks into the blast furnace, and under the pressure of the furnace, it penetrates along the expansion joint and destroys the expansion joint. Filling materials in the furnace, thereby forming gas air gaps, reducing the cooling effect of the stave on the protection of carbon bricks, accelerating the erosion of carbon bricks built in the hearth, and shortening the service life
However, the effect of this method is only alleviated to a certain extent, and does not solve this problem for a long time. Therefore, a new solution to this technical problem is urgently needed

Method used

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Experimental program
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Effect test

Embodiment 1

[0016] see figure 1 , figure 2 , a kind of masonry method, described method comprises the following steps: the first step: complete the carbon brick masonry that the bottom of the furnace is fully covered; When building the outer ring first, to meet the requirements of carbon brick roofing and cooling wall roofing without leaving a carbon ramming material ramming layer, and then build the inner ring, which is different from the conventional masonry from the inside to the outside Different, after the carbon brick roof 4 is built, the wedge-shaped carbon brick 2 is built, and a pure copper baffle 3 with a width of δ and a height of h is inserted between the stave 6 and the carbon brick, and the width of the copper baffle 3 is δ is 15-25cm, and the height h is 20-30cm. In the first step, the furnace bottom 12 is covered with carbon bricks starting from the furnace core. Before the masonry, the furnace bottom surface is cleaned, and then the furnace bottom center the first carb...

Embodiment 2

[0018] see figure 1 , figure 2 , image 3 , a blast furnace hearth, the hearth includes a furnace bottom 10, a side wall 11 and a furnace shell 7, the furnace bottom 10 includes a furnace bottom carbon brick 12 and a ceramic pad 13, and the side walls are sequentially from top to bottom Tuyere combination 1, wedge-shaped carbon brick 2, carbon brick roof 4, a stave 6 is arranged between the furnace shell 7 and the side wall 11, and a copper baffle 3 is embedded between the stave 6 and the carbon brick. The width δ of the copper baffle is 15-25cm, and the height h is 20-30cm. Further, the width δ of the copper baffle is 18cm, and the height h is 25cm. Between the cooling wall 6 and the side wall 11, there is an expansion There is an expansion gap between the stave and the furnace shell, and carbon ramming material 5 is arranged in the expansion gap. In this technical scheme, when building a new blast furnace or a large or medium repair blast furnace, figure 1 Below the co...

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Abstract

The invention relates to a masonry method. The masonry method comprises the following steps that firstly, carbon bricks are fully laid to build a furnace bottom; secondly, carbon bricks are annularly laid to form a side wall, when the carbon bricks are annularly laid and top building is conducted, the outer ring is built firstly, so that the carbon bricks of the side wall abut against the top of the cooling wall, then the inner ring is built, after top laying of the carbon bricks is completed, wedge-shaped carbon bricks are laid, and a copper baffle with the width being delta and the height being h is embedded between the cooling wall and the corresponding carbon brick. According to the masonry method, when the last but one carbon brick of the hearth carbon bricks located below tuyere small sleeve combine bricks is laid, the top laying method meaning that the last but one carbon brick abuts against the cooling wall is adopted, the copper baffle is embedded between the last carbon brick and the cooling wall of the hearth, water which is leaked because cooling equipment is damaged flows out along the copper baffle and is discharged at regular intervals through a preserved press mortar hole, the water does not pass an expansion joint between the cooling wall and the carbon bricks of the hearth, the situation that filler in the expansion joint is damaged, so that a gas gap is formed is prevented, the carbon bricks are protected, and the service life of the hearth is prolonged.

Description

technical field [0001] The invention relates to a masonry method and belongs to the technical field of ironmaking technology. Background technique [0002] When building a new blast furnace or building large and medium blast furnaces, expansion joints are left between the refractory brick masonry and the cooling wall, and between the cooling wall and the furnace shell, and carbon ramming materials are filled in the expansion joints. The upper part of the furnace hearth is equipped with cooling equipment such as air supply outlets, and these cooling equipment are all water-cooled. The current problem is: when the cooling equipment is damaged during the production process, because the cooling water pressure of the cooling equipment is higher than the internal pressure of the blast furnace, the cooling water leaks into the blast furnace, and under the pressure of the furnace, it penetrates along the expansion joint and destroys the expansion joint. Filling materials in the fur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B7/00
Inventor 陶中明王启敏
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD