Silica fume for furnaces refractory materials

Silica fume for furnaces refractory materials:This microsilica is generally added to cement used in the construction of kilns in factories. Enhancement of hardness and compressive strength. Silica fume for refractory castables fills the voids and defects in the refractory material, improves the denseness and hardness of the material, and at the same time generates a high-strength silicate phase through the reaction, which enhances the compressive strength and abrasion resistance of the material. Improvement of heat insulation performance. The radiation effect and thermal conductivity of silica fume are very low, which effectively improves the thermal insulation performance of refractory materials and realises the thermal insulation of refractory materials. In addition, there is a reduction in the rate of burnout, enhancement of the integrity of the refractory material and resistance to spalling, etc.