Research on thermal shock resistance of mullite-bauxite-silicon carbide castable refractory |
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| Authors: | Wei Zhang Wenyong Dai Nobuaki Chiyoda |
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| Institution: | 1. Plibrico (Dalian) Industries Co., Ltd, Dalian, 116600, China
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| Abstract: | Effects of different silicon carbide contents on thermal shock resistance properties of mullite-bauxite castable refractory
were analyzed respectively by taking the mullite, bauxite as main raw materials and taking calcium aluminate cement as a binding
system. After 24 h curing in mould and another 24 h curing at 110° after demoulding, the samples were heated at 1000, 1300
and 1500° for 3 h in air, respectively. The bulk density, thermal expansion coefficient and thermal shock resistance were
examined. The results showed that there was a great effect of content of SiC on bulk density, thermal expansion coefficient
and thermal shock resistance of mullite-bauxite castable. Under the experimental conditions, the castable performed the best
thermal shock resistance when w(SiC)=5%–10%. |
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| Keywords: | silicon carbide mullite bauxite thermal shock resistance heating |
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