堆积密度1.53~1.99g/cm3,颗粒密度3.95~4.0g/cm3 ,基本粒度为45-55%,努谱硬度 2000 - 2200 Kg/mm2,莫氏硬度 9.0
硅>98%,铁0.02%
半透精砂#板材砂#滤料#填充料8-16 16-26 26-40 40-70 70-120
硅>97%
硅99.86%,铝0.03%,铁0.003%
硅99.886%,未酸洗,只做了磁选,未烘干
硅99.50%,铁0.019%,烧白96.6