... 9% 2. low ion impurities, 3.stable particle size distributions, 4.low price, Fused Silica is produced by fusing and transforming ... crystalline silica at 1700ºC-2500ºC high ... high-temperature refractories.Application:solar crucible, the matarial of fused silica powder, quartz glass handicraft, quartz glass tube, etc. ...