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Radiant heat reinforced absorbent and preparation method thereof

A technology that enhances absorption and radiant heat. It is applied in the field of industrial kiln radiant heat absorption and utilization. It can solve the problems of short service life, poor thermal stability, and low emissivity, and achieve the effects of easy shedding, uniform distribution, and reduced scattering coefficient.

Inactive Publication Date: 2014-09-17
WUHAN RUIGAN TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A technical solution of the present invention is to provide a special radiant heat enhancer for industrial kilns. Aiming at the defects of poor thermal stability, low wear resistance, short service life and low emissivity of current infrared energy-saving coatings, we start from Based on the emissivity of raw materials, crystal structure, thermal shock resistance, wear resistance, etc., a kind of industrial kiln with high wear resistance, high thermal stability, high emissivity and non-attenuation enhanced absorption of radiant heat has been prepared. Agents, including radiation bases, binders:

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Equipped with 2kg powder, according to the mass ratio Cr 2 o 3 (30%), Fe 2 o 3 (20%), MnO 2 (21%), CuO (4%), TiO 2 (9%), NiO (8%), ZrO 2 (3%), SiO 2 (5%). Mix the above powders and grind them for 2 hours, put them into an electric furnace at 1200°C, the heating rate is 5°C / min, take them out after roasting for 3 hours, quench them with water rapidly, put them in an oven and dry them for 2 hours at a drying temperature of 100°C, and grind them into small After granulation, put it into a gypsum mold in the form of densification and accumulation, and perform a second heat treatment in an electric furnace at 900°C with a heating rate of 4°C / min. Material, according to the mass ratio of low temperature glass frit / Al 2 o 3 =2:1, binder / radiation base material=1:1 by adding low-temperature glass frit and Al 2 o 3 , Mixed and ball milled for 6 hours and then taken out to obtain the product. Conduct scanning electron microscopy, XRD phase, thermal shock resistanc...

Embodiment 2

[0030] Equipped with 2kg powder, according to the mass ratio Cr 2 o 3 (30%), Fe 2 o 3 (15%), MnO 2 (30%), CuO (2%), TiO 2 (8%), NiO (8%), ZrO 2 (3%), SiO 2 (4%). Mix the above powders and grind them for 2 hours, put them into an electric furnace at 1400°C, and heat up at a rate of 6°C / min, take them out after roasting for 3 hours, quench them with water, put them in an oven and dry them for 2 hours at a drying temperature of 80°C, and grind them into small pieces. After granulation, put it into a gypsum mold in the form of densification and accumulation, and perform a second heat treatment in an electric furnace at 1100°C with a heating rate of 3°C / min. Material, according to the mass ratio of low temperature glass frit / Al 2 o 3 =2:1, binder / radiation base material=1.5:1 ratio by adding low-temperature glass frit and Al 2 o 3 , Mixed and ball milled for 8 hours and then taken out to obtain the product. Conduct scanning electron microscopy, XRD phase, thermal s...

Embodiment 3

[0033] Equipped with 2kg powder, according to the mass ratio Cr 2 o 3 (35%), Fe 2 o 3 (20%), MnO 2(20%), CuO (3%), TiO 2 (8%), NiO (8%), ZrO 2 (3%), SiO 2 (3%). Mix the above powders and grind them for 2 hours, put them into an electric furnace at 900°C with a heating rate of 3°C / min, take them out after roasting for 5 hours, quench them with water rapidly, dry them in an oven for 2 hours at a drying temperature of 60°C, and grind them into After small particles, put them into a gypsum mold in the form of densification and accumulation, and perform a second heat treatment in an electric furnace at 1200°C with a heating rate of 2°C / min. After 3 hours of heat preservation, take it out and cool it, remove the mold, and obtain radiation after crushing Base material, according to the mass ratio of low temperature glass frit / Al 2 o 3 =2:1, binder / radiation base material=1:1 ratio adding low-temperature glass frit and Al 2 o 3 , after mixing, ball milling for 5 hours ...

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Abstract

The invention provides a radiant heat reinforced absorbent and a preparation method thereof. The radiant heat reinforced absorbent comprises a radiant base material and an adhesive, wherein the radiant base material comprises the following components in percentage by weight: 30-45 percent of Cr2O3, 15-20 percent of Fe2O3, 20-30 percent of MnO2, 2-4 percent of CuO, 5-15 percent of TiO2, 5-12 percent of NiO, 3-8 percent of ZrO2 and 2-8 percent of SiO2; low-temperature glass powder and Al2O3 are used as the adhesive; the mass ratio of the low-temperature glass powder to the Al2O3 is 1-3:1; and the mass ratio of the adhesive to the radiant base material is 1-2.5:1. The preparation method comprises the following steps of proportioning; firing; performing water quenching; grinding; performing thermal treatment; and performing ball milling. The industrial kiln stove radiant heat reinforced absorbent with high wear resistance, high thermal stability and high emissivity is prepared.

Description

technical field [0001] The invention relates to the field of industrial kiln radiant heat absorption and utilization, in particular to a radiant heat enhanced absorbent and a preparation method thereof. Background technique [0002] In the high-temperature infrared radiation coating technology, the key is to prepare a high-emissivity ceramic coating material, followed by adhering it firmly to the base material through a reasonable process to make a radiation heater. However, the choice of radiation material formula, preparation process and base material determines that the heating effect will be significantly different. Countries all over the world, especially Japan, have successfully obtained a variety of high-temperature infrared radiation materials suitable for drying materials, mainly including zircon sand series, silicon carbide series, etc., and the radiation rate of the whole band has reached above 0.92. However, the development of the current infrared radiation coat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/42
Inventor 卢鹏荐佘有缘周静杨文明熊远碌
Owner WUHAN RUIGAN TECH DEV
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