烧1200℃白度83.5,含铝>37%
铝(Al2O3)36.31%,铁(Fe2O3)0.95%,白度80,烧失量14.02%,强度5.9%
铝(Al2O3)含量36.31%,铁(Fe2O3)含量0.95%,烧失量14.02%,白度83.4