Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention relates to the technical field of refractory materials, in particular to an amorphous high-alumina refractory material and a preparation method thereof. The material comprises 45-85% offused corundum-based aluminum-magnesium spinel, 10-30% of graphite, and 5-20% of quartz, 5-15% of zirconium oxide, wherein the fused corundum-based aluminum-magnesium spinel comprises more than 85% byweight of alumina and less than 10% by weight of magnesium oxide. The preparation method comprises the following steps: adding graphite, quartz and zirconium oxide into a heat treatment furnace, mixing, heating until the quartz begins to melt, keeping the temperature for 5-30 minutes, and cooling; putting the raw material subjected to heat treatment into a ball mill for ball milling to obtain a mixed raw material with the particle size of 0.5-5mm; and stirring the fused corundum-based aluminum-magnesium spinel in a stirrer for 5-10 minutes, adding the ball-milled raw materials into the stirrer, and mixing for 5-30 minutes. Zirconium oxide and graphite are compounded through quartz, so that the furnace lining has extremely high corrosion resistance, meanwhile, the graphite with high thermal conductivity transfers heat of zirconium oxide and quartz out, thermal expansion of zirconium oxide is reduced, and cracking and damage of the furnace lining are prevented.
本发明涉及耐火材料技术领域，尤其涉及一种不定型高铝质耐火材料及其制备方法，电熔刚玉基铝镁尖晶石45~85%、石墨10~30%、石英5~20%、氧化锆5~15%，所述电熔刚玉基铝镁尖晶石中氧化铝的重量百分含量大于85%，氧化镁的重量百分含量小于10%，工艺如下：将石墨、石英和氧化锆加入热处理炉中，混合并升温至石英开始融化，保温5~30分钟后降温；再将经过热处理的原料放入球磨机中球磨，得到粒径为0.5~5mm的混合原料；然后将电熔刚玉基铝镁尖晶石在搅拌机中搅拌5~10分钟后，将球磨后的原料加入搅拌机中混合5~30分钟。本发明通过石英将氧化锆和石墨复合，使炉衬具有极高的耐腐蚀性同时高导热率的石墨将氧化锆和石英的热量传递出去，减小氧化锆的热膨胀，防止炉衬开裂、破损。
The invention relates to the technical field of refractory materials, in particular to an amorphous high-alumina refractory material and a preparation method thereof. The material comprises 45-85% offused corundum-based aluminum-magnesium spinel, 10-30% of graphite, and 5-20% of quartz, 5-15% of zirconium oxide, wherein the fused corundum-based aluminum-magnesium spinel comprises more than 85% byweight of alumina and less than 10% by weight of magnesium oxide. The preparation method comprises the following steps: adding graphite, quartz and zirconium oxide into a heat treatment furnace, mixing, heating until the quartz begins to melt, keeping the temperature for 5-30 minutes, and cooling; putting the raw material subjected to heat treatment into a ball mill for ball milling to obtain a mixed raw material with the particle size of 0.5-5mm; and stirring the fused corundum-based aluminum-magnesium spinel in a stirrer for 5-10 minutes, adding the ball-milled raw materials into the stirrer, and mixing for 5-30 minutes. Zirconium oxide and graphite are compounded through quartz, so that the furnace lining has extremely high corrosion resistance, meanwhile, the graphite with high thermal conductivity transfers heat of zirconium oxide and quartz out, thermal expansion of zirconium oxide is reduced, and cracking and damage of the furnace lining are prevented.
本发明涉及耐火材料技术领域，尤其涉及一种不定型高铝质耐火材料及其制备方法，电熔刚玉基铝镁尖晶石45~85%、石墨10~30%、石英5~20%、氧化锆5~15%，所述电熔刚玉基铝镁尖晶石中氧化铝的重量百分含量大于85%，氧化镁的重量百分含量小于10%，工艺如下：将石墨、石英和氧化锆加入热处理炉中，混合并升温至石英开始融化，保温5~30分钟后降温；再将经过热处理的原料放入球磨机中球磨，得到粒径为0.5~5mm的混合原料；然后将电熔刚玉基铝镁尖晶石在搅拌机中搅拌5~10分钟后，将球磨后的原料加入搅拌机中混合5~30分钟。本发明通过石英将氧化锆和石墨复合，使炉衬具有极高的耐腐蚀性同时高导热率的石墨将氧化锆和石英的热量传递出去，减小氧化锆的热膨胀，防止炉衬开裂、破损。
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