| 摘要 |
The invention relates to refractory material and in particular to lining parts of the pusher ovens used in steelworks, the lining parts being made of a cast refractory material having a chemical composition ZrO2, SiO2, Al2O3 and Na2O (or other metal oxide) in defined proportions, but containing substantially no mullite, and furthermore has a crystallographic composition Corundum, Zirconia, Vitreous phase of defined proportions to inhibit cracking and preserve abrasion resistance.
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