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A kind of infrared radiation coating and its preparation method and a kind of infrared radiation coating

An infrared radiation coating and infrared radiation coating technology, applied in the field of metallurgy and coatings, can solve the problems of high cost and poor thermal shock resistance of the coating, and achieve the goal of reducing raw material costs, improving heat storage capacity and thermal shock resistance stability Effect

Active Publication Date: 2015-09-09
KING STRONG MATERIAL ENG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention solves the technical problems of high cost and poor thermal shock resistance of the coating in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh each raw material according to the following mass fractions, and obtain the infrared radiation coating S1 of the present embodiment after mixing:

[0026] From 60wt%MnO 2 , 20wt%Fe 2 o 3 , 10wt%CuO, 5wt%Co 2 o 3 , 5wt%NiO powder is sintered and crushed at 1300°C to prepare 60 parts by mass of spinel structure ceramic powder with D90≥325 mesh;

[0027] 40 parts by mass of mullite;

[0028] 20 parts by mass of aluminum phosphate;

[0029] 20 parts by mass of chromium phosphate;

[0030] 20 parts by mass of aluminum chromium phosphate;

[0031] 8wt% polyvinyl formal aqueous solution 40 mass parts.

[0032] Coating the above-mentioned infrared radiation coating S1 on the high-alumina brick regenerator, the emissivity of the formed infrared radiation coating is 0.92, and the heat storage capacity is increased by 30% at 1200°C.

Embodiment 2

[0034] Each raw material is weighed according to the following mass fractions, and the infrared radiation coating S2 of the present embodiment is obtained after mixing:

[0035] From 50wt%MnO 2 , 40wt%Fe 2 o 3 , 10wt%Co 2 o 3 Prepare 40 parts by mass of spinel structure ceramic powder with D90≥600 mesh through sintering and crushing at 1320°C;

[0036] 60 parts by mass of cordierite;

[0037] 10 parts by mass of chromium phosphate;

[0038] 40 parts by mass of aluminum chromium phosphate;

[0039] 50 mass parts of 6wt% polyvinyl formal aqueous solution.

[0040] Coating the above-mentioned infrared radiation coating S2 on the silica brick regenerator, the emissivity of the formed infrared radiation coating is 0.88, and the heat storage capacity at 600°C is increased by 5%.

Embodiment 3

[0042] Each raw material is weighed according to the following mass fractions, and the infrared radiation coating S3 of the present embodiment is obtained after mixing:

[0043] From 30wt%MnO 2 , 20wt%Fe 2 o 3 , 10wt%CuO, 30wt%Cr 2 o 3 , 10wt%NiO was sintered at 1360°C and pulverized to prepare 40 parts by mass of spinel structure ceramic powder with D90≥500 mesh;

[0044] 30 parts by mass of cordierite;

[0045] 30 parts by mass of mullite;

[0046] 80 parts by mass of aluminum chromium phosphate;

[0047] 120 parts by mass of 5wt% polyvinyl formal aqueous solution.

[0048] The above-mentioned infrared radiation coating S3 is coated on the high-alumina brick regenerator, and the radiation ratio of the formed infrared radiation coating is 0.89, and the heat storage capacity is increased by 18% at 1200°C.

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Abstract

The invention provides infrared-radiation paint. The infrared-radiation paint is formed by mixing a component A and a component B in a weight ratio of 1:(1-2), wherein the component A contains ceramic powder with a stable spinel structure, and high-temperature expansion modifier; the high-temperature expansion modifier is selected from mullite and / or cordierite; the component B contains phosphate and water-base resin. The invention further provides a preparation method of the infrared-radiation paint and an infrared-radiation coating formed by the infrared-radiation paint. The infrared-radiation paint provided by the invention is low in cost, stable in high infrared-radiation rate; the formed coating has good heat storage capacity and high thermal shock resistance stability.

Description

technical field [0001] The invention relates to the technical fields of metallurgy and coatings, in particular to an infrared radiation coating, a preparation method thereof and an infrared radiation coating. Background technique [0002] The role of the ironmaking blast furnace hot blast stove is to heat the blast to a certain temperature to improve the benefit and efficiency of the blast furnace. Blast furnace hot blast stoves in ironworks generally adopt the air supply system of "two firings and one delivery". The checker bricks first absorb the radiant heat of the high-temperature flue gas in the combustion chamber to increase the temperature of the regenerator of the hot blast stove, and then pass in cold air, which is heated by the checker bricks to 1150~1250 ℃ and then sent to the ironworks. How to increase the air temperature is the key technology of blast furnace smelting. Common methods are to co-fire high calorific value gas, increase the heat exchange area of ​​...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D129/14C09D7/12
Inventor 赵立英廖应峰王刚李正曦陈进
Owner KING STRONG MATERIAL ENG LTD