红柱石加入量对焦宝石基浇注料性能的影响

研究了红柱石加入量对焦宝石基浇注料性能的影响。结果表明, 试样的体积密度随红柱石加入量的增加而增大; 经过1 500 ℃热处理后, 试样的膨胀率随红柱石加入量的增加而增大; 试样的强度随红柱石加入量的增加而增大, 但过多的红柱石会对试样的强度产生负面影响; 经过1 000 ℃热处理后试样的磨损量随红柱石含量的增加而减小, 经过1 300 ℃热处理后试样的磨损量随红柱石含量的增加而增大; 当热处理温度大于1 300 ℃后, 试样的热膨胀系数随红柱石加入量的增加而增大。试样的抗热震性能随红柱石加入量的增大而改善。在本实验条件下, 红柱石加入量为6%时, 材料的性能最好。

Effects of Andalusite Addition on Properties of Calcined Flint Clay Based Castable Refractory

Effect of andalusite addition on properties of calcined flint clay based castable refractory was investigated. Results showed as follows: A andalusite addition increasing, the bulk density of sample increased, the expansion rate of sample increased after a heat treatment at 1 500 ℃.  The strength also increased, but excessive addition of andalusite could result in the strength slightly deteriorate. The abrasion value decreased after a heat treatment at 1 000 ℃ while increased after a heat treatment at 1 300 ℃.  The thermal expansion coefficient of specimens increased after a heat treatment at more than 1 300 ℃.  The thermal shock resistance of specimens was also improved. In this experiment, materials showed the best properties with andalusite addition of 6%.