天然石英砂、玻璃原料等,含硅99.2%-99.5%,含铁600ppm-80ppm,目数20-120,非石英石机制砂非海砂
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