Undensified Micro Silica For Refractory

We are offering our client an excellent quality range of Undensified Micro Silica for Refractory. Microsilica is a very fine pozzolanic material, composed of amorphous silica produced by electric arc furnaces as a byproduct of the production of elemental silicon or ferro silicon alloys. Microsilica is also called as silica fume, fumed silica, silica dust, which is widely used in concretea s field and refractorya s field. The microsilica used in refractory has a minimum of 92% content of silica, the average content of SiO2 is around 93%.And this densified microsilica reaches national first grade standard,80% of granularity is less than 0.1 um with a maximum of 0.3 um.

Application in refractory :
Microsilica in refractory is a highly effective pozzolanic material, the functions of adding microsilica are as follow:
1) enhancing the fluid of pouring refractory
2) reducing the volume of used water
3) be easy to shape
4) raising the production efficiency
5) microstructure for gap filling