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Vapor pressures and temperatures at different positions in corundum castables during heating
Pages: 338-340
Year: Issue:  5
Journal: Refractories

Keyword:  corundum castablesheatingvapor pressuretemperature;
Abstract: 将纯铝酸钙水泥和SiO2微粉复合结合的刚玉质浇注料振动浇注成100 mm×100 mm× 100 mm的试样,并在距试样上表面不同深度(分别为40、50、60 mm)处埋入压力引管和热电偶,养护24h后脱模,然后以5℃·min-1的加热速度升温,记录炉温从100℃升温至约450℃过程中试样内部不同深度处的蒸汽压力和温度.结果表明:1)当炉温升至约400℃时,试样内部不同深度处的蒸汽压力均达到最大,对应的试样内部温度比较接近,约为260℃;炉温超过400℃后,试样内部的蒸汽压力迅速降低.2)在受热过程中,试样的最大蒸汽压力出现在试样中心位置.
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