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Agent for reducing open pores of refractory brick body

A refractory brick body and air hole technology, which is applied in the field of refractory brick manufacturing, can solve problems such as increased friction, damage to refractory brick molds, economic losses, etc., and achieves the reduction in the number of shutdown maintenance, saving maintenance costs, and simple formula Effect

Inactive Publication Date: 2013-03-20
郑州凯翔耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the production and pressing of refractory bricks, under the action of high pressure, the friction of refractory materials increases, which easily damages the refractory brick mold.
This makes the finally prepared refractory bricks easy to be corroded by harmful gases in key parts of the building body due to too many open pores on the surface of the brick body during use, resulting in damage to the brick body
When the situation is serious, the refractory bricks will fall off and break, so that the industrial production is forced to stop and the furnace is shut down for maintenance, which has caused great economic losses to the enterprise.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Take 800 purpose a-AL 2 o 3 35 parts of fine powder, 15 parts of 320-mesh zircon powder, 10 parts of 200-mesh Guangxi white clay, and 1.8 parts of lignin. Put the above raw materials in a closed container, add water and grind them into a uniform preparation. When pressing refractory bricks, apply the above preparation evenly on the template of the mold, and then pour the refractory mud for pressing. After the pressing is completed, the above preparation will be fully adsorbed on the surface of the formed refractory mud The material can be fired at high temperature in the sintering furnace, and the molding and sintering of refractory bricks can adopt the existing technology.

Embodiment 2

[0015] Take 800 purpose a-AL 2 o 3 65 parts of micropowder, 25 parts of 320-mesh zircon powder, 20 parts of 200-mesh Guangxi white clay, and 5.5 parts of lignin. Put the above raw materials in a closed container, add water and grind them into a uniform preparation. When pressing refractory bricks, apply the above preparation evenly on the template of the mold, and then pour the refractory mud for pressing. After the pressing is completed, the above preparation will be fully adsorbed on the surface of the formed refractory mud The material can be fired at high temperature in the sintering furnace, and the molding and sintering of refractory bricks can adopt the existing technology.

Embodiment 3

[0017] Take 800 purpose a-AL 2 o 3 50 parts of fine powder, 20 parts of 320-mesh zircon powder, 15 parts of 200-mesh Guangxi white clay, and 2.55 parts of lignin. Put the above raw materials in a closed container and add water to grind them into a uniform preparation. When pressing refractory bricks, apply the above preparation evenly on the template of the mold, and then pour the refractory mud for pressing. After the pressing is completed, the above preparation will be fully adsorbed on the surface of the formed refractory mud The material can be fired at high temperature in the sintering furnace, and the molding and sintering of refractory bricks can adopt the existing technology.

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Abstract

The invention relates to the field of manufacture of refractory bricks applied to construction of blast furnace hot blast stove for ironmaking and steelmaking, and in particular relates to an agent for reducing open pores of a refractory brick body. The agent is manufactured by the following raw materials by weight: 35 to 65 parts of alpha-Al2O3 micro powder, 15 to 25 parts of zircon powder, and 10 to 20 parts of Guangxi white mud, wherein 3 to 5% of lignin by weight based on the total weight of the raw materials is adopted. The raw materials are prepared into the uniform agent. When in use for pressing the refractory brick, the agent is uniformly coated on a mould plate of a mould, the refractory mud is filled to be pressed, and then the pressed product is transferred into a sintering furnace to be sintered at high temperature, so as to obtain the refractory brick. The agent is simple in formula and convenient to operate; more than 40% of the open pores of the refractory body prepared can be reduced, more than 90% of maintaining cost can be saved, and good conditions are provided for efficient production.

Description

technical field [0001] The invention relates to the field of manufacturing refractory bricks used in the construction of hot blast furnaces for iron and steel smelting blast furnaces, in particular to a preparation for reducing open pores of refractory brick bodies. Background technique [0002] With the large-scale blast furnace and the development of hot blast stove longevity technology, the quality of refractory bricks used in hot blast stove construction is becoming more and more important. During the production and pressing process of refractory bricks, under the action of high pressure, the friction of refractory materials increases, which easily damages the refractory brick mold. This makes the finally prepared refractory bricks easy to be corroded by harmful gases in key parts of the building body due to too many open pores on the surface of the brick body during use, resulting in damage to the brick body. When the situation is serious, the refractory bricks will fa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/63
Inventor 刘辉凯魏福军刘广辉
Owner 郑州凯翔耐火材料有限公司