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Lightweight corrosion-resistant aluminum-magnesium castable and preparation method thereof
The invention relates to a lightweight corrosion-resistant aluminum-magnesium castable and a preparation method thereof. According to the technical scheme, the lightweight corrosion-resistant aluminum-magnesium castable comprises the following components in percentage by weight: 64 to 81 percent of microporous corundum particles, 5 to 13 percent of corundum fine powder, 5 to 8 percent of alpha-alumina micro powder, 5 to 8 percent of magnesia fine powder and 3 to 7 percent of a bonding agent. The preparation method comprises the following steps: mixing the corundum fine powder, the alpha-alumina micro powder, the magnesia fine powder and the bonding agent according to the components and contents of the lightweight corrosion-resistant aluminum-magnesium castable, then adding a polycarboxylic water reducer in an amount which is 0.05 to 0.15 percent based on the weight of the lightweight corrosion-resistant aluminum-magnesium castable, and performing uniform mixing to obtain a premix; adding the microporous corundum particles into the premix, and performing uniform stirring to obtain the lightweight corrosion-resistant aluminum-magnesium castable. The lightweight corrosion-resistant aluminum-magnesium castable has the characteristics of small average aperture, low apparent porosity, stronger high-temperature strength, high volume stability, lower thermal conductivity and high slag penetration resistance, and is long in service life, and unit refractory material consumption can be effectively reduced.
Lightweight corrosion-resistant aluminum-magnesium castable and preparation method thereof
The invention relates to a lightweight corrosion-resistant aluminum-magnesium castable and a preparation method thereof. According to the technical scheme, the lightweight corrosion-resistant aluminum-magnesium castable comprises the following components in percentage by weight: 64 to 81 percent of microporous corundum particles, 5 to 13 percent of corundum fine powder, 5 to 8 percent of alpha-alumina micro powder, 5 to 8 percent of magnesia fine powder and 3 to 7 percent of a bonding agent. The preparation method comprises the following steps: mixing the corundum fine powder, the alpha-alumina micro powder, the magnesia fine powder and the bonding agent according to the components and contents of the lightweight corrosion-resistant aluminum-magnesium castable, then adding a polycarboxylic water reducer in an amount which is 0.05 to 0.15 percent based on the weight of the lightweight corrosion-resistant aluminum-magnesium castable, and performing uniform mixing to obtain a premix; adding the microporous corundum particles into the premix, and performing uniform stirring to obtain the lightweight corrosion-resistant aluminum-magnesium castable. The lightweight corrosion-resistant aluminum-magnesium castable has the characteristics of small average aperture, low apparent porosity, stronger high-temperature strength, high volume stability, lower thermal conductivity and high slag penetration resistance, and is long in service life, and unit refractory material consumption can be effectively reduced.
Lightweight corrosion-resistant aluminum-magnesium castable and preparation method thereof
GU HUAZHI (Autor:in) / HUANG AO (Autor:in) / ZOU YANG (Autor:in) / JIN LINWEN (Autor:in) / ZHANG MEIJIE (Autor:in)
22.07.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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