Castable material for hanging bricks of partition walls of heating furnaces

A castable and heating furnace technology, used in the field of brick castables for hanging bricks on partition walls of heating furnaces, can solve problems such as short service life and poor material strength, and achieve long service life, moderate bulk density, and excellent thermal shock stability. Effect

Inactive Publication Date: 2019-11-08
北京利尔高温材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention proposes a casting material for hanging bricks on the partition wall of the heating furnace, which solves the problems of poor material strength and short service life in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A heating furnace partition wall hanging brick castable, made of the following raw materials in parts by weight: 20 parts of light mullite with a particle size of 1-5 mm, 30 parts of mullite with a particle size of 0.088-1 mm 1 part of 71 cement with a particle size of less than 0.088 mm, 1 part of quartz powder with a particle size of less than 0.088 mm, and 0.1 part of sodium tripolyphosphate with a particle size of less than 0.5 mm.

[0021] The above-mentioned raw materials are weighed in proportion by weight, mixed and stirred evenly before use.

[0022] After testing, it can be concluded that the casting material for hanging bricks for heating furnace partition walls prepared by using the above raw materials can achieve the following properties: after baking in an oven at 110°C for 24 hours, the bulk density of the material is 2.02g / cm3; the compressive strength Up to 32Mpa or more.

Embodiment 2

[0024] A heating furnace partition wall hanging brick castable, made of the following raw materials in parts by weight: 35 parts of spherical light mullite with a particle size of 1-5 mm, and mullite with a particle size of 0.088-1 mm 45 parts, 10.5 parts of 70 cement with a particle size of less than 0.088 mm, 5.5 parts of quartz powder with a particle size of less than 0.088 mm, and 0.15 parts of sodium tripolyphosphate with a particle size of less than 0.5 mm.

[0025] The above-mentioned raw materials are weighed in proportion by weight, mixed and stirred evenly before use.

[0026] After testing, it can be concluded that the casting material for hanging bricks for heating furnace partition walls prepared by using the above raw materials can achieve the following properties: after baking in an oven at 110°C for 24 hours, the bulk density of the material is 2.04g / cm3; the compressive strength Up to 30Mpa or more.

Embodiment 3

[0028] A casting material for hanging bricks for heating furnace partition walls, which is made of the following raw materials in parts by weight: 50 parts of light mullite with a particle size of 1-5 mm, 60 parts of mullite with a particle size of 0.088-1 mm 20 parts of 71 cement with a particle size of less than 0.088 mm, 10 parts of kyanite powder with a particle size of less than 0.088 mm, and 0.2 parts of sodium hexametaphosphate with a particle size of less than 0.5 mm.

[0029] The above-mentioned raw materials are weighed in proportion by weight, mixed and stirred evenly before use.

[0030] After testing and testing, it is concluded that the castable for heating furnace partition wall hanging bricks prepared by using the above raw materials can achieve the following properties: after baking in an oven at 110°C for 24 hours, the bulk density of the material is 2.0g / cm3; compressive strength It can reach more than 31Mpa.

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Abstract

The invention provides a casting material for hanging bricks for partition walls of heating furnaces, and the casting material is prepared from the following raw materials in parts by weight: 20-50 parts of light mullite, 30-60 parts of mullite, 1-20 parts of cement, 1-10 parts of an expansion agent and 0.1-0.2 part of a water reducing agent. The casting material has the following beneficial effects: by using the mullite as a main raw material and adding a reasonable expansion material, a prepared hanging brick product has the characteristics of moderate volume density, excellent thermal shockstability, good volume stability, long service life and the like, and the service life can reach more than one year.

Description

technical field [0001] The invention relates to the technical field of refractory preparation, in particular to a casting material for hanging bricks on a partition wall of a heating furnace. Background technique [0002] At present, the hanging bricks of the heating furnace partition wall are generally made of high-alumina castables. Since the hanging bricks of the heating furnace partition wall are in the environment of alternating cold and hot changes for a long time during use, they are required to have excellent thermal shock stability. ; At the same time, due to the structural characteristics of the hanging brick itself, it is required to have a low volume density and high enough strength to prevent fracture during its use. [0003] At present, the service life of the hanging bricks of the traditional heating furnace partition wall is mostly about half a year. Such frequent replacement of the hanging bricks affects the production rhythm, and at the same time increases ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
CPCC04B35/66
Inventor 王新杰张晓波赵冉杨少康丁海瑞刘丽颜浩任林赵伟赵现华
Owner 北京利尔高温材料股份有限公司
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