silica fume

white microsilica with SiO2 up to 92%-96%. As a by-product of zirconia, it has excellent features both in silica and zirconia, such as high SiO2 content, fine granularity, large surface area, and good fluidity to enhance the wear resistance, durability and reinforcement performance in the fields of injection materials, concrete, refractory, ceramics and electronic materials.