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.%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%.
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