Low-cost magnesia converter lining patching material and preparation method thereof

A low-cost technology for furnace lining repair, applied in the field of low-cost magnesia converter lining repair material and its preparation, can solve the problems affecting the production cost of iron and steel enterprises, high cost, and large amount of repair materials, so as to achieve sustainable development and reduce Production cost, the effect of increasing economic benefits

Active Publication Date: 2011-07-06
鞍钢实业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous increase of steel production in my country in recent years, the use of refractory materials is also rising, which not only increases the production cost of steel, but also causes a large consumption of national resources
The converter needs to be repaired during its use. In recent years, the domestic converter rep

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A low-cost magnesia converter lining repair material is made of the following materials in parts by weight:

[0021] 10 parts of large particles of 5-8mm waste refractories; 10 parts of medium particles of 3-5mm waste refractories; 20 parts of fine particles of 1-3mm waste refractories; 15 parts of fine particles of 0-1mm waste refractories; waste refractories ≤ 0.088mm 25 parts of powder, 10 parts of asphalt; 5 parts of iron oxide red.

[0022] Add the above-mentioned waste refractory materials of various particle sizes, asphalt and red iron oxide into the mixer according to the stated weight ratio, stir and mix until uniform, then add 2 parts of waste engine oil into the mixer, continue to stir evenly, the total mixing time is 5-20 minutes , can be used for bagging or construction.

Embodiment 2

[0024] A low-cost magnesia converter lining repair material is made of the following materials in parts by weight:

[0025] 20 parts of large particles of 5-8mm waste refractories; 15 parts of medium particles of 3-5mm waste refractories; 15 parts of fine particles of 1-3mm waste refractories; 10 parts of fine particles of 0-1mm waste refractories; waste refractories ≤ 0.088mm 20 parts of powder, 11 parts of asphalt; 4 parts of red iron oxide.

[0026] Add the above-mentioned waste refractory materials, asphalt and iron oxide red of each particle size into the mixer according to the stated weight ratio, stir and mix until uniform, then add 2 parts of waste diesel oil into the mixer, continue to stir evenly, the total mixing time is 5-20 minutes , can be used for bagging or construction.

Embodiment 3

[0028] A low-cost magnesia converter lining repair material is made of the following materials in parts by weight:

[0029] 15 parts of large particles of 5-8mm waste refractories; 15 parts of medium particles of 3-5mm waste refractories; 20 parts of fine particles of 1-3mm waste refractories; 10 parts of fine particles of 0-1mm waste refractories; 20 parts of powder, 9 parts of asphalt; 6 parts of iron oxide red.

[0030] Add the above-mentioned waste refractory materials of various particle sizes, asphalt and red iron oxide into the mixer according to the stated weight ratio, stir and mix until uniform, then add 3 parts of waste engine oil into the mixer, continue to stir evenly, the total mixing time is 5-20 minutes , can be used for bagging or construction.

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Abstract

The invention relates to the field of regeneration and utilization of waste refractory materials, particularly to a low-cost magnesia converter lining patching material and a preparation method thereof. The low-cost magnesia converter lining patching material is characterized in that waste refractory materials are taken as raw materials, and the patching material is formed by mixing the following components by weight parts: 80 to 95 parts of waste refractory materials, 8 to 20 parts of binding agent (asphalt), 0 to 10 parts of sintering aid (iron oxide red) and 0.1 to 5 parts of combustion improver (waste fuel oil); and the waste refractory materials are waste magnesia chrome bricks, waste magnesia carbon bricks or waste magnesia bricks. In the method for preparing the patching material, the waste refractory materials are proportionally mixed with asphalt and iron oxide red, and then 0.1 to 5 parts of combustion improver are added during the stirring process for uniform mixing. The invention has the benefits that the patching material and the preparation method thereof reduce the production cost of converter lining patching materials required for steel production, increase the economic benefits of steel enterprises, reduce the consumption of mineral resources, are energy-saving and environment-friendly and facilitate the sustainable development of enterprises and the nation.

Description

technical field [0001] The invention relates to the field of regeneration and utilization of waste refractory materials, in particular to a low-cost magnesia converter lining repair material and a preparation method thereof. Background technique [0002] Refractory materials are an indispensable part of the production of iron and steel enterprises, and their consumption and cost affect the economic benefits of iron and steel enterprises. With the continuous increase of steel production in my country in recent years, the use of refractory materials is also rising, which not only increases the production cost of steel, but also causes a large consumption of national resources. The converter needs to be repaired during its use. In recent years, the domestic converter repair process and raw material research has also made great progress. However, the large amount of repair material and high cost have always affected the production cost of iron and steel enterprises. For the reg...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 关艳赵明涛张永金张福钢
Owner 鞍钢实业集团有限公司
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