| 摘要 |
<p>The present invention relates to linings for pusher ovens of fused cast refractory materials having the following chemical and crystallographic compositions, by weight: Chemical Analysis ZrO2 10 to 28% preferably 18 to 23% SiO2 3 to 12% preferably 5 to 7% Al2O3 60 to 80% preferably 70 to 75% Na2O 0.3 to 1.5% preferably 0.4 to 0.8% Fe2O3, TiO2, CaO and MgO up to 5% in total, preferably less than 2%, but with the proviso that the weight ratio SiO2/Na2O is not more than 16. The lining has improved abrasion resistance.</p> |
