Melt type silica powder

First, fused silica powder Overview: Fused Silica is made of high quality natural quartz powder processing technology through a unique process and formed by high-temperature treatment, the molecular structure of the arrangement by the ordered into disordered arrangement. Color white, high purity and has the following features: low coefficient of linear expansion; good electromagnetic radiation; resistance to chemical corrosion stable chemical properties; reasonable and orderly, controllable particle size distribution. Fused silica powder using a very wide range. Second, the fused silica powder performance parameters: chemical composition Specifications SiO2% ≥99.80 300 mesh to 5000 mesh according to customer demand, production-related specifications. Fe2O3% ≤0.010 Al2O3% ≤0.10 Moisture% ≤0.08 LOI% ≤0.10 Na + ppm ≤2 Cl-ppm ≤2 Fe2 + .3 + ppm ≤5 Conductivity μs / cm ≤3 physical properties of amorphous crystalline melting point ℃ Boiling point ℃ 2230 1713 Density, g / cm 2.20 Mohs hardness