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A kind of high emissivity thermal insulation composite refractory coating

A refractory coating, high emissivity technology, applied in sustainable manufacturing/processing, climate sustainability, chemical industry, etc., can solve the problems of cumbersome process and high coating cost, and achieve simple preparation, high emissivity, and convenient operation Effect

Active Publication Date: 2022-07-05
SINOSTEEL LUOYANG INST OF REFRACTORIES RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is mainly to provide a high-emissivity heat-insulating composite refractory coating for the problems of high cost of the above-mentioned coating and cumbersome process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: a high-emissivity thermal insulation composite refractory coating, the raw material composition and weight parts are: 20 parts of cordierite fine powder, 20 parts of alumina fine powder, 30 parts of zirconia fine powder, 15 parts of hollow ceramic microbeads parts, 15 parts of glass beads, 30 parts of aluminum dihydrogen phosphate, and 40 parts of deionized water. In addition, 0.1 part of carboxymethyl cellulose thickener and 0.03 part of borosilicate glass powder sintering accelerator were added. This type of coating can be used stably at around 1300 °C, and has good high temperature radiation and thermal insulation properties. The infrared emissivity can be maintained above 0.8, and the thermal conductivity at 1000 °C is 0.5W·m. -1 ·K -1 about.

Embodiment 2

[0019] Embodiment 2: a high-emissivity thermal insulation composite refractory coating, the raw material composition and weight parts are: 20 parts of cordierite fine powder, 20 parts of alumina fine powder, 25 parts of zirconia fine powder, 20 parts of hollow ceramic microbeads parts, 15 parts of glass beads, (20+20+25+10+15 less than 100) 35 parts of aluminum dihydrogen phosphate, and 35 parts of deionized water. In addition, 0.1 part of carboxymethyl cellulose thickener and 0.05 part of potassium feldspar powder sintering accelerator were added. This type of coating can be used stably at around 1300 °C, and has good high temperature radiation and thermal insulation properties. The infrared emissivity can be maintained above 0.8, and the thermal conductivity at 1000 °C is 0.5W·m. -1 ·K -1 about.

Embodiment 3

[0020] Embodiment 3: a high-emissivity thermal insulation composite refractory coating, the raw material composition and weight parts are: 25 parts of cordierite fine powder, 20 parts of alumina fine powder, 25 parts of zirconia fine powder, 15 parts of hollow ceramic microbeads parts, 15 parts of glass beads, 40 parts of aluminum dihydrogen phosphate, and 30 parts of deionized water. In addition, 0.2 part of hydroxyethyl cellulose thickener and 0.04 part of borosilicate glass powder sintering accelerator were added. This type of coating can be used stably at around 1300 °C, and has good high temperature radiation and thermal insulation properties. The infrared emissivity can be maintained above 0.8, and the thermal conductivity at 1000 °C is 0.5W·m. -1 ·K -1 about.

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Abstract

The invention belongs to the technical field of high temperature energy saving and heat preservation, and in particular relates to a high emissivity heat insulating composite refractory coating. The raw material composition and mass parts of a high-emissivity heat-insulating composite refractory coating involved are: 10-30 parts of cordierite fine powder, 10-35 parts of alumina fine powder, 20-40 parts of zirconia fine powder, hollow 10-30 parts of ceramic microbeads and 10-25 parts of glass microbeads; the total mass of the raw materials of the composite refractory coating is 100 parts, and 30-50 parts of binder, 20-40 parts of binder and 20-40 parts of each 100 parts of the raw materials are added. parts solvent, and 0.1-0.2 parts thickener and 0.03-0.05 parts sintering accelerator. In the invention, the composite thermal insulation coating is obtained by weighing and mixing according to the mass fraction of the raw materials. better advantage.

Description

technical field [0001] The invention belongs to the technical field of high temperature energy saving and heat preservation, and in particular relates to a high emissivity heat insulating composite refractory coating. Background technique [0002] With the rapid development of the national economy, the problems of energy shortage and dissipation have become increasingly prominent, and the development concept of energy saving and low carbon has been deeply rooted in the hearts of the people. The energy consumption of high temperature industry accounts for about 25%~40% of the national energy consumption. The average thermal efficiency of the most important industrial furnaces is less than 40%, which is 10%~20% lower than that of developed industrial countries, which results in a great waste of energy. Therefore, thermal insulation and high emissivity coatings came into being, which can effectively achieve the purpose of energy saving and emission reduction in different ways. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/482C04B35/195C04B35/66C04B35/106C04B35/63C04B35/636C04B35/64
CPCC04B35/482C04B35/195C04B35/66C04B35/106C04B35/6309C04B35/6316C04B35/6365C04B35/64C04B2235/36C04B2235/3472C04B2235/9607C04B2235/9646Y02P20/10
Inventor 刘鹏程张伟王刚王曲
Owner SINOSTEEL LUOYANG INST OF REFRACTORIES RES
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