Micro silicon powder, also known as silica fume, is formed by oxidation at a high temperature of 2000 degrees. Ultra fine high-purity amorphous silica, observed under an electron microscope, has a spherical shape, amorphous and non crystalline, with an average particle size of 0.2 microns. Has excellent physical and chemical properties Micro silicon powder has been used to improve refractory materials for more than 40 years. The use of micro silicon powder in refractory materials will have the following characteristics:

1. Improve the fluidity of refractory castables, reduce water consumption, make them easier to form, and greatly improve production efficiency;

2. Due to the filling effect of its ultrastructure, the density and strength of refractory materials are significantly improved;

3. Micro silicon powder has high activity, and in the presence of Al2O3 component, it is more likely to generate mullite phase, which significantly improves the high-temperature strength and thermal shock resistance of refractory materials.