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High-temperature lining surface repairing material

A surface repair and lining technology, which is applied in the field of refractory materials, can solve the problems that the wear resistance cannot meet the use requirements, the kiln cannot immediately heat up and run, and the wall has poor high temperature resistance, so as to achieve good high temperature wear resistance and high temperature Good corrosion resistance and fast construction

Inactive Publication Date: 2017-08-04
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

The refractory materials currently used in the past have a long solidification time after repairing, and the kiln cannot immediately heat up and run. The repaired wall has poor high temperature resistance, poor combination with the original wall, and wear resistance cannot meet the use requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The high-temperature liner surface repairing material of the present invention is prepared by the following raw materials in proportions by mass, coarse grained Al 2 o 3 The bauxite homogenized material contains 16 parts with a particle size of 5-3mm, 22 parts with a particle size of 3-1mm, 22 parts of brown corundum powder with a particle size of 1-0mm, and Al-85 super-grade alum. Soil homogenizing material (320 mesh) fine powder 25 parts, active α-Al 2 o 3 5 parts, 4 parts of high-quality silica powder, 2 parts of bentonite, 4 parts of Guangxi white clay, 1 part of oxalic acid, and 0.05 parts of explosion-proof fiber powder; add 6 parts of aluminum dihydrogen phosphate solution with a specific gravity of 1.47 to the above raw materials, and carry out The first time of mechanical stirring and mixing, after the mixing is uniform, the material is trapped for more than 24 hours, and then the second mechanical stirring is added, and then 8 parts of the same specific grav...

Embodiment 2

[0015] The high-temperature liner surface repairing material of the present invention is prepared by the following raw materials in proportions by mass, coarse grained Al 2 o 3 The content is 80% bauxite homogenized material contains 18 parts of 5-3mm particle size, 20 parts of 3-1mm particle size, 23 parts of brown corundum powder with particle size of 1-0mm fine particles, Al-85 super alum Soil leveling material fine powder 25 parts, active α-Al 2 o 3 5 parts, 3 parts of high-quality silica powder, 2.5 parts of bentonite, 3.5 parts of Guangxi white mud, 2 parts of oxalic acid, and 0.05 parts of explosion-proof fiber powder; the above raw materials are added to 7 parts of aluminum dihydrogen phosphate solution with a specific gravity of 1.50, Carry out mechanical stirring and mixing for the first time, and after mixing evenly, the material will be trapped for more than 24 hours, then mechanically stir for the second time, and then add 8 parts of the same specific gravity of...

Embodiment 3

[0017] The high-temperature liner surface repairing material of the present invention is prepared by the following raw materials in proportions by mass, coarse grained Al 2 o 3 The content is 80% bauxite. The homogenized material contains 18 parts of 5-3mm particle size, 23 parts of 3-1mm particle size, 20 parts of brown corundum powder with particle size of 1-0mm fine particles, Al-85 super alum Soil leveling material fine powder 23 parts, active α-Al 2 o 3 6 parts, 4 parts of high-quality silica powder, 2 parts of bentonite, 4 parts of Guangxi white mud, 1 part of oxalic acid, and 0.05 parts of explosion-proof fiber powder; the above raw materials are added with 6 parts of aluminum dihydrogen phosphate solution with a specific gravity of 1.55. Mechanical stirring and mixing once, after mixing evenly, the material is trapped for more than 24 hours, then mechanical stirring is performed for the second time, and then 8 parts of the same specific gravity of 1.55 aluminum dihyd...

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PUM

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Abstract

The invention discloses a high-temperature lining surface repairing material which is prepared from, by mass, 35-40 parts of coarse particle, alumina homogenizing material with Al2O3 content not lower than 80%, 20-25 parts of fine particle, brown alumina powder, 25-30 parts of fine powder, special-grade alumina homogenizing material with Al2O3 content not lower than 85%, 5-6 parts of active alpha-Al2O3, 3-5 parts of high-quality silicon dioxide micropowder, 5-7 parts of plasticizer, 1.0-2.0 parts of preservative and 0.05 part of anti-explosion fiber powder. A preparation method of the repairing material includes: adding a binding agent, stirring for the first time, mixing well, and discharging; aging for more than 24h, stirring for the second time, adding the binding agent of the same type, stirring, and extruding by an extruder to obtain the repairing material. The high-temperature lining surface repairing material is high in strength, quick in heat conduction, high in high-temperature corrosion resistance, high in high-temperature wear resistance, high in adhesive capacity, less prone to stripping, high in performance of combining with original walls and quick in construction, quick temperature-rise running can be realized after construction is finished, and safe periodic running of thermal equipment / high-temperature kiln is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a high-temperature lining body surface repair material. Background technique [0002] During the operation of power generation boilers, waste incinerators and other high-temperature kilns, the furnace wall is always under high temperature, and the inner wall of the furnace wall is subjected to strong scouring force, and the surface layer is easy to crack and peel off, which eventually leads to damage to the inner wall of the furnace wall. repair. The refractory materials used in the current industry have a long solidification time after repairing, and the kiln cannot be heated up immediately. The repaired wall has poor high temperature resistance, poor combination with the original wall, and wear resistance cannot meet the use requirements. Contents of the invention [0003] In order to solve the deficiencies in the prior art, the present invention pro...

Claims

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Application Information

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IPC IPC(8): C04B35/101C04B35/66
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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