Silica Fume vs Fumed Silica
Micro silica fume ①Appearance and basic chemical composition: Appearance is gray or off-white powder, refractoriness > 1600 ℃. Bulk density: 1600~1700 kg/cm3. The chemical composition is as follows: SiO2 content: 75～98% Al2O3 content: 1.0±0.2% Fe2O3 content: 0.9±0.3% ② Fineness and specific surface area: The fineness of silica fume is less…