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Blast furnace pressing-in grouting and lining-making construction method

A construction method and blast furnace technology, applied in blast furnaces, blast furnace details, blast furnace parts and other directions, can solve the problems of deterioration of the operating environment, affecting the normal production and use of blast furnaces, etc., to improve efficiency and quality, prolong the life of the furnace body, and improve the economy. and social benefits

Inactive Publication Date: 2008-10-22
WUHAN HONGCHENG METALLURGICAL MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will lead to the deterioration of the operating environment in front of the furnace, and seriously affect the normal production and use of the blast furnace

Method used

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  • Blast furnace pressing-in grouting and lining-making construction method
  • Blast furnace pressing-in grouting and lining-making construction method
  • Blast furnace pressing-in grouting and lining-making construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: figure 1 Schematic diagram of the distribution of press holes in the cooling box blast furnace, figure 2 Schematic distribution diagram of the press-in holes of the cooling plate blast furnace, image 3 It is a schematic diagram of the connection between the furnace shell and the grouting short pipe in the embodiment of the present invention, Figure 4 An exploded schematic diagram of the quick connector, Image 6 It is the method schematic diagram of embodiment 1.

[0039] Such as figure 1 , figure 2 , image 3 , Figure 4 , Image 6 Shown, a kind of blast furnace pressing grouting lining construction method, its specific steps are as follows:

[0040] The first step: open the grouting hole 2 on the furnace shell 5 at the damaged part of the blast furnace, and then clean the grouting hole until the grouting channel is formed; after cleaning, insert a short grouting pipe 4 with a valve 9 in each hole One end of the short grouting pipe 4 with valve ...

Embodiment 2

[0061] Example 2: Figure 5 Schematic diagram of the heating for pressing into the mud, Figure 7 It is the method schematic diagram of embodiment 2.

[0062] Such as Figure 5 , Figure 7 As shown, on the basis of the above-mentioned Example 1, the press-in mud 12 is carbon press-in mud, which is heated to 60-80°C with water isolation before construction or directly on the tapping channel by using the residual heat of the iron channel to heat and press the slurry. 12. Press into the mud 12. After heating, stir properly and put it into the hopper of the press machine and press it into the blast furnace through the press machine; After closing the valve 9 on the short grouting pipe 4, the output pipe 8 on the grouting machine is unloaded from the short grouting pipe 4. The container for placing carbon to press into the mud is a water tank 10, and water 11 is filled in the water tank 10.

[0063] The press-in mud used in Example 1 can be selected from Wuhan Hongcheng Metall...

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Abstract

A blast furnace pressing-in grouting lining making construction method comprises the following: a first step of drilling grouting holes (2) in a furnace casing (5) of the damaged part of the blast furnace, inserting a grouting short pipe (4) with a valve (9) into each hole, and then welding the grouting short pipe (4) and the furnace casing (5) together; a second step of butting the output pipe of a pulp press and the grouting short pipe with the valve (9) on the furnace casing together; a third step of pressing stirred slurry (12) into the blast furnace through the pulp press, after reaching the preset slurry amount, the pulp press stopping pressing, opening the feedback valve of the pulp press, and then disassembling an output pipe (8) of the pulp press from the grouting short pipe (4) after closing the valve (9) of the grouting short pipe (4); a fourth step of circulating the second step until grouting is finished for all grouting holes. The blast furnace pressing-in grouting lining making construction method not only improves the efficiency and quality of blast furnace maintenance but also achieves good maintenance effect under both the delay status of the blast furnace and the non-delay status of the blast furnace.

Description

technical field [0001] The invention relates to a maintenance construction method in the middle and later stages of blast furnace production, in particular to a construction method for press-in grouting and lining of a blast furnace. technical background [0002] After a period of production of ironmaking blast furnaces, due to factors such as construction quality and production operations, serious gas leakage may occur in the hearth, hearth, furnace body and other parts of the blast furnace, and even local burns in the furnace shell and erosion of the furnace lining may occur. Phenomenon. This will lead to the deterioration of the operating environment in front of the furnace, and seriously affect the normal production and use of the blast furnace. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a blast furnace press-in grouting lining construction method that can prolong the service life of the blast furnace. ...

Claims

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Application Information

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IPC IPC(8): C21B7/06
CPCY02P10/20
Inventor 许树斌
Owner WUHAN HONGCHENG METALLURGICAL MATERIAL
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