刚玉质浇注料加热过程中内部不同位置的蒸汽压力和温度  

Vapor pressures and temperatures at different positions in corundum castables during heating

作　　者：朱珠[1] 王战民[1] 曹喜营[1] 黄育飞[2] 赵瑾[1] 

机构地区：[1]中钢集团洛阳耐火材料研究院有限公司先进耐火材料国家重点实验室,河南洛阳471039 [2]河池学院,广西宜州546300

出　　处：《耐火材料》2013年第5期338-340,共3页Refractories

基　　金：国家自然科学基金资助项目(51172215)

摘　　要：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24 h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。The corundum castables specimens with dimensions of 100mm×100mm×100mm were pre-pared using tabular corundum,pure calcium aluminate cement and silica fume by vibration casting. Pres- sure pipes and thermocouples were embedded into the specimens with different depths （40,50 and 60 mm） from the specimen surface. After 24 h curing and demoulding,the specimens were heated up at 5v ,and the vapor pressures and temperatures in different depths in the specimens from 100-450 ℃ were recorded. The results show that：（1）when the furnace temperature reaches about 400 ℃,all the inter-nal vapor pressures in different depths in the specimens reach the highest, and the corresponding internal temperatures of the specimens are similar （about 260 ℃） ;when the furnace temperature exceeds 400 ℃, the internal vapor pressures decrease rapidly; （2）during heating, the highest vapor pressure appears in the center of the specimen.

关 键 词：刚玉浇注料 加热 蒸汽压力 温度 

分 类 号：TQ175[化学工程—硅酸盐工业]