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Low-thermal-conductivity refractory material for high-temperature pipeline system and preparation method of low-thermal-conductivity refractory material
The invention relates to a low-thermal-conductivity refractory material for a high-temperature pipeline system and a preparation method of the low-thermal-conductivity refractory material. The refractory material can be selected from the following components in percentage by mass: 10%-30% of microporous sintered corundum, 10%-15% of mullite, 10%-45% of andalusite, 30%-36% of andalusite powder and 4%-10% of aluminum hydroxide. According to the refractory material, the andalusite is taken as a main material, and the microstructure that the andalusite is a meshy mullite mixed with a high-purity quartz phase is fully utilized, so that the heat conduction is favorably reduced; and in addition, microporous sintered corundum with the microporous structure is adopted as a part of raw materials and is matched with micron-sized aluminum hydroxide, and a microporous effect is created by utilizing gaps left by high-temperature gas-phase volatilization of the aluminum hydroxide, so that the thermal conductivity of the refractory material is reduced, and the thermal shock resistance stability is improved.
本发明涉及一种高温管道系统用低导热耐火材料及其制备方法，所述耐火材料可选自包括以质量分数计的如下组分：10％～30％的微孔烧结刚玉、10％～15％的莫来石、10％～45％的红柱石、30％～36％的红柱石粉、4％～10％的氢氧化铝。该耐火材料以红柱石作为主材料，充分利用红柱石是网状的莫来石中间夹杂高纯石英相的微观结构，有利于降低导热；此外采用具有微孔结构的微孔烧结刚玉为部分原料，并搭配微米级氢氧化铝，利用氢氧化铝高温气相挥发留下空隙，营造微孔效果，从而降低耐火材料的导热性并提高抗热震稳定性。
Low-thermal-conductivity refractory material for high-temperature pipeline system and preparation method of low-thermal-conductivity refractory material
The invention relates to a low-thermal-conductivity refractory material for a high-temperature pipeline system and a preparation method of the low-thermal-conductivity refractory material. The refractory material can be selected from the following components in percentage by mass: 10%-30% of microporous sintered corundum, 10%-15% of mullite, 10%-45% of andalusite, 30%-36% of andalusite powder and 4%-10% of aluminum hydroxide. According to the refractory material, the andalusite is taken as a main material, and the microstructure that the andalusite is a meshy mullite mixed with a high-purity quartz phase is fully utilized, so that the heat conduction is favorably reduced; and in addition, microporous sintered corundum with the microporous structure is adopted as a part of raw materials and is matched with micron-sized aluminum hydroxide, and a microporous effect is created by utilizing gaps left by high-temperature gas-phase volatilization of the aluminum hydroxide, so that the thermal conductivity of the refractory material is reduced, and the thermal shock resistance stability is improved.
本发明涉及一种高温管道系统用低导热耐火材料及其制备方法，所述耐火材料可选自包括以质量分数计的如下组分：10％～30％的微孔烧结刚玉、10％～15％的莫来石、10％～45％的红柱石、30％～36％的红柱石粉、4％～10％的氢氧化铝。该耐火材料以红柱石作为主材料，充分利用红柱石是网状的莫来石中间夹杂高纯石英相的微观结构，有利于降低导热；此外采用具有微孔结构的微孔烧结刚玉为部分原料，并搭配微米级氢氧化铝，利用氢氧化铝高温气相挥发留下空隙，营造微孔效果，从而降低耐火材料的导热性并提高抗热震稳定性。
Low-thermal-conductivity refractory material for high-temperature pipeline system and preparation method of low-thermal-conductivity refractory material
一种高温管道系统用低导热耐火材料及其制备方法
DONG HONGQIN (Autor:in) / FAN XIAOLE (Autor:in) / LI JIANTAO (Autor:in)
30.11.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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