... particle size distributions, 4.low price, Fused Silica is produced by fusing and transforming crystalline silica at 1700ºC-2500ºC high temperature ... refractories.Application:solar crucible, the matarial of fused silica powder, quartz glass handicraft, quartz glass tube, etc.SPECIFICATIONS:SIO2 – 99.9% MIN , AL2O3 ... 40mesh ,125mesh, 200mesh, 325mesh,etc. or according to your requirements. fused silica