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Patching method for furnace lining of revolving furnace steel tapping hole part

A furnace lining repair and tapping hole technology, which is applied in the manufacture of converters, etc., can solve the problems of inaccurate repair positions and short use time of furnace materials, and achieve the effects of improving corrosion resistance, fast sintering speed and simple operation

Active Publication Date: 2013-11-20
SHOUGANG JINGTANG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for repairing the furnace lining at the tapping hole of the converter, which solves the technical problems of inaccurate repairing position and short service time of charge after repairing in the prior art

Method used

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  • Patching method for furnace lining of revolving furnace steel tapping hole part

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Effect test

Embodiment 1

[0029] The embodiment of the present invention provides a method for repairing the lining of the tapping hole of a converter. For smelting 132B03812 heats, the production organization notifies that there is 10 minutes between pouring times, and the tapping hole can be arranged for maintenance. The team leader in front of the furnace organizes personnel to use environmentally friendly high-strength quick repair materials to repair the position directly above the tapping hole and the joint between the furnace cap and the furnace body after the furnace, including the following steps:

[0030] Step 101: performing laser thickness measurement and scanning on the tap hole of the converter to obtain the thickness value of the converter;

[0031] Step 102: Putting the charge into the tap hole of the converter whose thickness is less than 300 mm, it takes 5 minutes, wherein the components of the charge and their proportioning relationship are as follows:

[0032] Magnesia 50kg, graphit...

Embodiment 2

[0041] The embodiment of the present invention provides a method for repairing the lining of the tapping hole of a converter. The production organization notifies that there is a 10-minute gap between pouring times, and the tapping hole can be arranged for maintenance. The team leader in front of the furnace organizes personnel to use environmentally friendly high-strength quick repair materials to repair the position directly above the tapping hole and the joint between the furnace cap and the furnace body after the furnace, including the following steps:

[0042] Step 201: performing laser thickness measurement and scanning on the tap hole of the converter to obtain the thickness value of the converter;

[0043] Step 202: Putting the charge into the converter taphole with a thickness less than 300mm, which takes 5 minutes, wherein the components of the charge and their proportioning relationship are as follows in weight percentage:

[0044] Fused magnesia 50kg, flake graphit...

Embodiment 3

[0049] The embodiment of the present invention provides a method for repairing the lining of the tapping hole of a converter. The production organization notifies that there is a 10-minute gap between pouring times, and the tapping hole can be arranged for maintenance. The team leader in front of the furnace organizes personnel to use environmentally friendly high-strength quick repair materials to repair the position directly above the tapping hole and the joint between the furnace cap and the furnace body after the furnace, including the following steps:

[0050] Step 301: performing laser thickness measurement and scanning on the tap hole of the converter to obtain the thickness value of the converter;

[0051] Step 302: put the charge into the converter taphole with the thickness less than 300mm, which takes 5 minutes, wherein, the components of the charge and their proportioning relationship are as follows by weight percentage:

[0052] Fused magnesia 40kg, flake graphite...

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Abstract

The invention discloses a patching method for a furnace lining of a revolving furnace steel tapping hole part, and belongs to the field of steelmaking technology. The method includes the steps: carrying out laser thickness measuring scanning of the revolving furnace steel tapping hole part to obtain a thickness value of a revolving furnace, putting a furnace burden into a revolving furnace steel tapping hole part which has the thickness value less than a thickness threshold, then rocking the furnace with iron, and after finishing steel tapping, carrying out slag splashing treatment. The patching method has simple operation, and has a precise patched position through the laser thickness measuring scanning; and the furnace burden is an environmental protection type high-strength rapid patching material, has strong adhesion force and fast sintering speed, and improves the erosion resistant ability of the patched position through adjustment of furnace slag and a gun position.

Description

technical field [0001] The invention belongs to the technical field of steelmaking, and in particular relates to a method for repairing the furnace lining at the tap hole of a converter. Background technique [0002] With the continuous development of the steel industry, the control of the steelmaking process is also becoming more and more refined. Every minute of the production process may have a profound impact on product quality, production costs, and the smoothness of production organization. The taphole of the converter is an important part of the production of the converter. During the tapping process, this position is subjected to high temperature and oxidative molten steel washing and soaking. The working conditions are extremely harsh. Improper maintenance of the taphole will easily cause serious production accidents with disastrous consequences. The traditional lining maintenance at the tapping hole mainly adopts the method of adding the self-flowing material of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/44
Inventor 罗伯钢李金柱苏震霆张丙龙田志红袁天祥高宠光王建斌赵长亮郭小龙
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD
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