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High-temperature-resistant stuffing with high emissivity and preparation method thereof

A technology with high emissivity and high temperature resistance, which is applied in the field of high temperature resistant high emissivity fillers and its preparation, can solve the problems of low average emissivity, harmful heavy metals, and low temperature resistance, and is conducive to large-scale industrial production, The effect of cheap raw materials and good thermal shock performance

Inactive Publication Date: 2018-08-14
广东奥胜新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The filler is specifically iron red high emissivity filler powder, the main components are MgO, Al 2 o 3 , SiC, ZrO 2 and Fe 2 o 3 , in which MgO, Al 2 o 3 and Fe 2 o 3 Fe formed by grinding the mixed powder 2 o 3 Doped with magnesia-aluminum spinel as the filler matrix; the filler is a high-temperature-resistant and high-emissivity filler applied to the inner wall of the boiler. Low, low average emissivity and harmful heavy metals

Method used

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  • High-temperature-resistant stuffing with high emissivity and preparation method thereof
  • High-temperature-resistant stuffing with high emissivity and preparation method thereof
  • High-temperature-resistant stuffing with high emissivity and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A kind of high-temperature-resistant high-emissivity filler, by mass percentage, comprises SiC 10wt% and ZrO 2 10wt%, the rest is MgO, Al 2 o 3 and Fe 2 o 3 ; Among them, MgO, Al 2 o 3 and Fe 2 o 3 The molar ratio is 1:1:1.

[0038] To prepare the high-temperature-resistant high-emissivity filler, the specific steps are as follows:

[0039] (1) Preparation of raw material mixed powder: according to the composition of filler powder (MgO, Al 2 o 3 and Fe 2 o3 The molar ratio of SiC and ZrO is 1:1:1 2 Accounting for 10wt% of the total mass of the powder), the raw materials were weighed with an electronic balance, among which MgO 2.1192g, Al 2 o 3 5.4040g, Fe 2 o 3 8.4768g, SiC 2g and ZrO 2 2g;

[0040] (2) Ball milling of raw material mixed powder: the weighed raw material mixed powder, grinding ball (ZrO 2 Balls (30g) and deionized water (80g) were mixed at a mass ratio of 1:1.5:4, put into a ball mill, and ball milled at a speed of 150r / min for 6h...

Embodiment 2

[0047] A high-temperature-resistant high-emissivity filler, comprising SiC 15wt% and ZrO by mass percentage 2 15wt%, the rest is MgO, Al 2 o 3 and Fe 2 o 3 ; Among them, MgO, Al 2 o 3 and Fe 2 o 3 The molar ratio is 1:1:1.3.

[0048] To prepare the high-temperature-resistant high-emissivity filler, the specific steps are as follows:

[0049] (1) Preparation of raw material mixed powder: according to the composition of filler powder (MgO, Al 2 o 3 and Fe 2 o 3 The molar ratio of SiC and ZrO is 1:1:1.3 2 Accounting for 15wt% of the total mass of the powder respectively), the raw materials were weighed with an electronic balance, among which MgO 1.828g, Al 2 o 3 4.6692g, Fe 2 o 3 9.5086g, SiC 1.5g and ZrO 2 1.5g;

[0050] (2) Ball milling of raw material mixed powder: mix the weighed mixed powder, grinding ball (ZrO 2 Balls (30g) and deionized (80g) water are mixed at a mass ratio of 1:3:5, put into a ball mill, and ball milled at a speed of 180r / min for...

Embodiment 3

[0057] A kind of high-temperature-resistant high-emissivity filler, by mass percentage, comprises SiC 20wt% and ZrO 2 20wt%, the rest is MgO, Al 2 o 3 and Fe 2 o 3 ; Among them, MgO, Al 2 o 3 and Fe 2 o 3 The molar ratio is 1:1:1.5.

[0058] To prepare the high-temperature-resistant high-emissivity filler, the specific steps are as follows:

[0059] (1) Preparation of raw material mixed powder: according to the composition of filler powder (MgO, Al 2 o 3 and Fe 2 o 3 The molar ratio of SiC and ZrO is 1:1:1.5 2 Accounting for 20wt% of the total mass of the powder respectively), the raw materials were weighed with an electronic balance, among which MgO 1.6754g, Al 2 o 3 4.2723g, Fe 2 o 3 10.0524g, SiC 2g and ZrO 2 2g;

[0060] (2) Ball milling of raw material mixed powder: mix the weighed mixed powder, grinding ball (ZrO 2 Balls (30g) and deionized water (80g) were mixed according to the mass ratio of 1:0.5:3, put into the ball mill, and ball milled at ...

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Abstract

The invention discloses high-temperature-resistant stuffing with high emissivity and a preparation method thereof. The stuffing is prepared from the following components in percentage by mass: 10-20wt% of SiC, 10-20wt% of ZrO2, and the balance of MgO, Al2O3 and Fe2O3, wherein a molar ratio of MgO to Al2O3 to Fe2O3 is 1 to 1 to (1-3.8). The stuffing is high-temperature-resistant stuffing with highemissivity, which is applied to the inner wall of a boiler, has the characteristics of being energy-saving and environmentally friendly, high in comprehensive emissivity and high in temperature resistance, and effectively solves the problems that existing stuffing is low in temperature resistance, is not high in average emissivity and has harmful heavy metal. According to the high-temperature-resistant stuffing with high emissivity prepared by a solid-phase method, the preparation method is simple and easy to implement, and products harmful on environment are fewer.

Description

technical field [0001] The invention relates to the technical field of infrared radiation filler preparation, in particular to a high-temperature-resistant high-emissivity filler applied to the inner wall of a boiler and a preparation method thereof. Background technique [0002] As a new type of energy-saving material for industrial furnaces, infrared radiation fillers can achieve good energy-saving effects when applied in industrial furnaces; at the same time, they have a good protective effect on the boiler wall matrix and have broad application prospects. The infrared radiation performance of traditional infrared radiation coatings on the market is seriously attenuated with the increase of temperature, the service life is short, and the fillers are prone to fall off and other problems. [0003] Since the 1960s in foreign countries, research on high-emissivity coatings has been carried out. The developed Enecoat infrared radiation coatings, ET24 infrared radiation coating...

Claims

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Application Information

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IPC IPC(8): C04B35/443C04B35/622C04B35/66
CPCC04B35/443C04B35/622C04B35/66C04B2235/3206C04B2235/3217C04B2235/3272C04B2235/9607
Inventor 曾群郭园陆文艺董小明陆永初古太平吕神锋朱伟国
Owner 广东奥胜新材料有限公司
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