赞砂 硅≥72.87%,铝≥16.43%,铁≤1.32%,钛≤0.07%,钙≤0.03%,镁≤0.03%,钾4.25%左右,钠≥0.66%左右,烧失≤4.28%,总量≥99.94,白度≥42.5/20.9,收缩≤4.8%《精准化验》
①钾砂,铝16%,钾4.5%,湿白20
②高温砂,铝17%,钾2%,湿白25
铝18%,铁0.61%,钾5.12%,钠0.4%,干白56.8,湿白43.3
铝39%,铁0.5%,钛0.8%,烧失14%
高铝砂粉,铝38%,铁0.8%,白度60
钾3%,钠5%,白度70,铝13%
钾4%,钠6%,铝18%,烧白43.2