High-infrared-reflectivity forsterite lightweight refractory and thermal insulation material and preparation method thereof

A forsterite and infrared reflection technology, applied in the field of lightweight refractory thermal insulation materials, can solve the problems of reduced material strength, low bulk density, weakened material thermal insulation effect, etc., and achieves low production cost, reduced bulk density, and reduced high temperature. The effect of thermal conductivity

Inactive Publication Date: 2015-08-19
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing methods for preparing forsterite lightweight refractory insulation materials often lead to a reduction in the strength of the material in order to obtain a lower bulk density; limited by the characteristics of the bulk material, the thermal conductivity of the material increases rapidly with the increase of the use temperature Large, which weakens the thermal insulation effect of the material at high temperature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A high-infrared reflectance forsterite light-weight refractory and thermal insulation material and a preparation method thereof. The specific steps of the preparation method described in this embodiment are:

[0034] Step 1. Mix 70~80wt% of titanium dioxide, 10~20wt% of magnesium hydroxide and 8~10wt% of magnesium chloride hexahydrate, press molding under the condition of 50~80MPa, and then in nitrogen atmosphere and 800~1000℃ Heat treatment under conditions for 0.5~1 hour to obtain heat treatment material I. Then, the heat-treated material I is crushed, ground, and sieved to obtain material A with a particle size of 0.088-1 mm and material B with a particle size of less than 0.088 mm.

[0035] Step 2. Mix 20~30wt% anhydrous potassium carbonate, 60~70wt% titanium dioxide and 8~10wt% glucose powder, press and form under the condition of 50~80MPa, and then in argon atmosphere and 1000~1200 Heat treatment at ℃ for 1~2 hours to obtain heat treatment material II. Then, th...

Embodiment 2

[0040] A high-infrared reflectance forsterite light-weight refractory and thermal insulation material and a preparation method thereof. The specific steps of the preparation method described in this embodiment are:

[0041]Step 1. Mix 80~85wt% of metatitanic acid, 10~15wt% of magnesium carbonate and 5~8wt% of industrial dextrin powder, press molding under the condition of 80~100MPa, and then in argon atmosphere and 500~ Heat treatment at 800°C for 1 to 2 hours to obtain heat treatment material I. Then, the heat-treated material I is crushed, ground, and sieved to obtain material A with a particle size of 0.088-1 mm and material B with a particle size of less than 0.088 mm.

[0042] Step 2. Mix 30~40wt% potassium sulfate, 50~60wt% metatitanic acid and 8~10wt% glucose powder, press and form under the condition of 80~100MPa, and then under the condition of nitrogen atmosphere and 800~1000℃ Under heat treatment for 0.5~1 hour, heat treatment material II was obtained. Then, the ...

Embodiment 3

[0047] A high-infrared reflectance forsterite light-weight refractory and thermal insulation material and a preparation method thereof. The specific steps of the preparation method described in this embodiment are:

[0048] Step 1. Mix 80~85wt% of metatitanic acid, 5~10wt% of magnesium sulfate and 8~10wt% of glucose powder, press and form under the condition of 50~80MPa, and then in argon atmosphere and 500~800℃ Heat treatment under conditions for 1-2 hours to obtain heat treatment material I. Then, the heat-treated material I is crushed, ground, and sieved to obtain material A with a particle size of 0.088-1 mm and material B with a particle size of less than 0.088 mm.

[0049] Step 2. Mix 25~35wt% of potassium chloride, 60~70wt% of metatitanic acid and 5~8wt% of industrial dextrin powder, press and form under the condition of 50~80MPa, and then in argon atmosphere and 800 Heat treatment at ~1000°C for 1 to 2 hours to obtain heat treatment material II. Then, the heat-treat...

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Abstract

The invention relates to a high-infrared-reflectivity forsterite lightweight refractory and thermal insulation material and a preparation method thereof. According to the technical scheme, the method comprises the following steps: uniformly mixing a titanium-containing raw material, a magnesium-containing raw material and a binding agent, molding, carrying out heat treatment, and grinding, thus obtaining an A material with a particle size of 0.088-1mm and a B material with a particle size of less than 0.088mm; uniformly mixing a potassium-containing raw material, a titanium-containing raw material and a binding agent, molding, carrying out heat treatment, and grinding, thus obtaining a C material with a particle size of 0.088mm; uniformly mixing the A material, the B material, the C material and a potassium-containing raw material, carrying out heat treatment, and grinding, thus obtaining a D material with a particle size of 0.088-1mm and an E material with a particle size of 0.088mm; and finally, mixing forsterite particles, fine forsterite powder, the A material, the D material, the E material, a magnesium-containing raw material, a silicon-containing raw material and a potassium-containing raw material, molding, drying, carrying out heat treatment, cooling, soaking and drying. The prepared high-infrared-reflectivity forsterite lightweight refractory and thermal insulation material is low in volume density, high in compression strength, and low in high-temperature heat conductivity coefficient.

Description

technical field [0001] The invention belongs to the technical field of lightweight refractory and thermal insulation materials. In particular, it relates to a high-infrared reflectivity forsterite light-weight refractory and thermal insulation material and a preparation method thereof. Background technique [0002] The development of high-temperature industry has put forward higher requirements for thermal insulation materials, such as high efficiency, energy saving, high strength, low conductivity, waterproof, etc. For this reason, people have been seeking and researching materials with low thermal conductivity, high infrared reflectivity and micropores. A new thermal insulation material for high temperature industry. [0003] Forsterite is one of the common minerals under the surface, which has the advantages of high temperature resistance, excellent corrosion resistance and high chemical stability. Thermal insulation materials with forsterite as the main crystal phase h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 王周福万俊刘浩王玺堂马妍
Owner WUHAN UNIV OF SCI & TECH
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