各种规格石英砂、硅微粉、尾泥,普通石英砂、铸造砂SiO2≥98—99%,Fe2O3≤0.02—0.04%,耐火度1750--1800℃;精制石英砂:SiO2≥99.5%,Fe2O3≤0.015—0.02%。
硅99.95%,铝0.006%,铁0.0053%,镁0.0012%,钙0.009%,钾0.0069%,白度96
硅99.26%,铝0.14%,铁0.26%,钠0.13%
硅99.2%,铝0.37%,铁0.316%
硅99.5%,铁0.05%
40-140目,铁100ppm
4N高纯石英砂,70-140目,硅99.991%,白度93