Fire-resisting lining body crack repairing material

A refractory lining and seam repairing technology, which is applied in the field of refractory materials, can solve the problems of not being able to guarantee the use of the furnace and increase production costs, and achieve the effects of good high-temperature wear resistance, strong adhesion, and easy construction

Inactive Publication Date: 2017-08-01
郑州耐都热陶瓷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no professional refractory material for repairing furnace wall cracks. When the furnace wall cracks or peels off and cannot be operated, the furnace must be replaced with new refractory bricks or castables for repairs. This will increase the production cost of the enterprise. , nor can it guarantee the final use effect of the furnace

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The refractory lining crack filling material of the present invention is prepared from the following raw materials in proportions by mass and number, 30 parts of brown corundum particles with a particle size of 3-1 mm, 25 parts of brown corundum particles with a particle size of 1-0 mm, and a particle size of 2 o 3 5 parts of powder, 25 parts of Al-80 super bauxite homogenized fine powder, 6 parts of kyanite powder, 4 parts of high-quality silica powder, 5 parts of bentonite, and 2 parts of oxalic acid; the above raw materials are added after accurate weighing 7.5 parts of aluminum dihydrogen phosphate solution with a specific gravity of 1.47-1.55, perform the first mechanical stirring for 3-5 minutes, after mixing evenly, the material is trapped for more than 24 hours, then carry out the second mechanical stirring for 3-5 minutes, and finally extrude through an extruder After the treatment, the joint filling material is made into a mud paste with good plasticity, and fi...

Embodiment 2

[0016] The refractory lining crack filling material of the present invention is prepared from the following raw materials in proportions by mass and number, 35 parts of brown corundum particles with a particle diameter of 3-1mm, 20 parts of brown corundum particles with a particle diameter of 1-0mm, and a particle diameter of 2 o 3 5 parts of powder, 25 parts of Al-80 super bauxite homogenized fine powder, 5 parts of kyanite powder, 5 parts of high-quality silica powder, 5 parts of bentonite, and 2 parts of oxalic acid; the above raw materials are added after accurate weighing 7.5 parts of aluminum dihydrogen phosphate solution with a specific gravity of 1.47-1.55, perform the first mechanical stirring for 3-5 minutes, after mixing evenly, the material is trapped for more than 24 hours, then carry out the second mechanical stirring for 3-5 minutes, and finally extrude through an extruder After the treatment, the joint filling material is made into a mud paste with good plastici...

Embodiment 3

[0018] The refractory lining crack filling material of the present invention is prepared from the following raw materials in proportions by mass, 32 parts of brown corundum particles with a particle size of 3-1 mm, 20 parts of brown corundum particles with a particle size of 1-0 mm, and a particle size of 2 o 3 6 parts of powder, 25 parts of Al-80 super bauxite homogenized fine powder, 7 parts of kyanite powder, 4 parts of high-quality silica powder, 6 parts of bentonite, and 2 parts of oxalic acid; the above raw materials are added after accurate weighing The specific gravity is 14.5 parts of aluminum dihydrogen phosphate solution of 1.47-1.55. The first mechanical stirring is carried out for 3-5 minutes. After mixing evenly, the material is trapped for more than 24 hours. Then the second mechanical stirring is carried out for 3-5 minutes, and finally extruded by an extruder After the treatment, the joint filling material is made into a mud paste with good plasticity, and fina...

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PUM

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Abstract

The invention discloses a fire-resisting lining body crack repairing material, which is prepared from the following raw materials in parts by mass: 60 to 62 parts of brown aluminum oxide particles, 5 to 6 parts of active alpha-Al2O3, 25 to 30 parts of Al-80 special alumina homogenizing material fine powder, 3 to 5 parts of high-quality silicon dioxide micro powder, 5 to 6 parts of plasticizers and 1.5 to 2.5 parts of storing agents. 14.5 to 15.5 parts of bonding agents are added into the raw materials; first mechanical stirring mixing is performed; after the uniform mixing, the material ageing is performed for more than 24 hours; then, the secondary mechanical stirring is performed; finally, the crack repairing material is prepared after the extrusion treatment by an extrusion machine; the crack repairing material is in a paste shape with good plasticity; finally, a 5.0-10kg plastic bag is used for sealing and packaging. The fire-resisting lining body crack repairing material has the advantages that the intensity is high; the high-temperature etching resistance is high; the high-temperature wear-resistance is high; the construction is convenient; the adhesion performance is high; the fire-resisting lining body crack repairing material can be firmly combined with the original lining body; the safe period operation of a thermal kiln furnace is met; the fire-resisting lining body crack repairing material is particularly suitable for the CFB boiler lining body crack fast rush repair.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a crack filling material for refractory linings. Background technique [0002] During the operation of high-temperature kilns in metallurgy, petrochemical, building materials, electric power and other industries, the furnace wall is frequently subjected to high temperature changes, and a large comprehensive stress is generated inside the furnace wall lining, which leads to cracks and irregular cracks in the furnace wall, which affects The overall strength of the furnace wall and the safe operation of the furnace. At present, there is no professional refractory material for repairing furnace wall cracks. When the furnace wall cracks or peels off and cannot be operated, the furnace must be replaced with new refractory bricks or castables for repairs. This will increase the production cost of the enterprise. , nor can it guarantee the final use effect of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/101
Inventor 魏发灿王文战魏俊辉慎东涛魏俊瑶燕军胜罗正
Owner 郑州耐都热陶瓷有限公司
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