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A kind of high temperature infrared radiation coating for industrial kiln and its preparation method

An infrared radiation and high temperature infrared technology, applied in the field of infrared radiation coatings, can solve the problems of unstable radiation performance, poor thermal shock resistance of the coating, and low operating temperature, and achieve excellent thermal stability and improve construction performance.

Inactive Publication Date: 2019-02-22
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the technical problems of unstable radiation performance, poor coating thermal shock resistance and low service temperature commonly existing in the prior art, and proposes a high-temperature infrared radiation coating for industrial kilns. Radiation paint and method for its preparation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The mid-infrared radiation base material of the component is composed of 30wt% MnO 2 , 50wt% chrome green (industrial grade), 5wt% CuO, 5wt% Fe 2 o 3 , 5wt%TiO 2 , 2.5wt%Co 2 o 3 , 2.5wt%Ni 2 o 3 The proportioning ingredients, and prepare the infrared radiation base material with spinel structure according to the following experimental steps:

[0043] 1) The raw materials required for the preparation of the infrared radiation base material are subjected to wet ball milling according to the mass ratio of the mixed ball milling material and distilled water as 1:1.5, adding distilled water, and ball milling for 12 hours at a rotating speed of 320r / min; The ball abrasive is dried at 110°C.

[0044] 2) Press-molding the dried ball abrasive with a molding pressure of 35Mpa, and press it into a small round block with a diameter of 30mm and a thickness of 5-10mm.

[0045] 3) Put the shaped green body in a fast heating box-type experimental electric furnace for sintering...

Embodiment 2

[0052] The mid-infrared radiation base material of the component is composed of 50wt% MnO 2 , 30wt% chrome green (industrial grade), 5wt% CuO, 5wt% Fe 2 o 3 , 5wt%TiO 2 , 2.5wt%Co 2 o 3 , 2.5wt%Ni 2 o 3 The proportioning ingredients, and prepare the infrared radiation base material with spinel structure according to the following experimental steps:

[0053] 1) The raw materials required for the preparation of the infrared radiation base material were wet ball milled according to the mass ratio of the mixed ball mill and distilled water as 1:1, and distilled water was added, and the ball milled for 12 hours under the condition of a rotating speed of 320r / min; The ball abrasive is dried at 115°C.

[0054] 2) Press-molding the dried ball abrasive with a molding pressure of 35Mpa, and press it into a small round block with a diameter of 30mm and a thickness of 5-10mm.

[0055] 3) Put the shaped green body in a rapid heating box-type experimental electric furnace for sinte...

Embodiment 3

[0062]The component infrared radiation base material is composed of 40wt% MnO 2 , 40wt% chrome green (industrial grade), 5wt% CuO, 5wt% Fe 2 o 3 , 5wt%TiO 2 , 2.5wt%Co 2 o 3 , 2.5wt%Ni 2 o 3 The proportioning ingredients, and prepare the infrared radiation base material with spinel structure according to the following experimental steps:

[0063] 1) The raw materials required for the preparation of the infrared radiation base material are subjected to wet ball milling according to the mass ratio of the mixed ball milling material and distilled water as 1:1.2, adding distilled water, and ball milling for 12 hours at a speed of 320r / min; The ball abrasive is dried at 113°C.

[0064] 2) Compress the dried ball abrasive into a small round block with a diameter of 30mm and a thickness of 5-10mm at a molding pressure of 38Mpa.

[0065] 3) Put the shaped green body in a rapid heating box-type experimental electric furnace for sintering at a sintering temperature of 1400°C, ke...

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Abstract

The invention discloses a high-temperature infrared radiant coating used for an industrial furnace and a preparation method thereof. The high-temperature infrared radiant coating is mainly prepared from an infrared radiant base material, a high-temperature thermal expansivity regulator and a binder by direct ball-milling and mixing, wherein the infrared radiant base material has a stable spinel structure; the high-temperature thermal expansivity regulator is selected from micro silicon dioxide powder; the binder is one or two selected from the group consisting of high-temperature sol and micro oxide powder; and the infrared radiant base material is prepared by high-temperature sintering of transition metal oxides prepared by proportioning and mixing of MnO2, industrial grade chrome green, Co2O3, Ni2O3, CuO, Fe2O3, TiO2 and ZrO2. According to the invention, infrared radiance of the coating can be improved; stability of the infrared radiance of the coating can be guaranteed; meanwhile, the service life is enhanced; the process is simple and has no pollution to products in a furnace; and strong bonding strength and thermal shock resistance are achieved.

Description

technical field [0001] The invention relates to the technical field of infrared radiation coatings, in particular to a high-temperature infrared radiation coating for industrial furnaces and a preparation method thereof. Background technique [0002] In my country, the energy consumption of industrial kilns accounts for about 60% of the national industrial energy consumption and 25% of the national total energy consumption. However, the average thermal efficiency of industrial furnaces in my country is less than 30%, while the average thermal efficiency of industrial furnaces in the world is more than 50%. Therefore, the energy saving of industrial furnaces has considerable potential. At present, the energy-saving methods and technologies of industrial kilns mainly include high-efficiency combustion technology, waste heat recovery and utilization, new furnace structure, infrared radiation coating, etc. As an energy-saving new technology in industrial kilns, infrared radiat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
CPCC04B35/66
Inventor 吴永权王家邦
Owner ZHEJIANG UNIV
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