采购干磨钾长石粉:
①钾≥9%,钠2.4%,铁≤0.3%,钙≤0.12%,铝≥16.5%,镁≤0.1%,钙≤0.08%,硅≤71%,钛≤0.2%,目数325目
②钾≥5%,钠≤4.2%,铁≤0.7%,铝≥15%,目数325目