what is silica fume?

Silica fume is also called micro-silica fume or agglomerated silica fume. When iron alloy is smelting ferrosilicon and industrial silicon (metal silicon), a large amount of highly volatile SiO2 and Si gas is produced in the submerged thermal electric furnace. It is formed by rapid oxidation, condensation and precipitation. It is a by-product of large-scale industrial smelting. The whole process needs to be recycled with dust removal and environmental protection equipment. Because of its low density, it also needs to be encrypted with encryption equipment.

In terms of particle size, silicon micropowder is processed from natural quartz, and the particle size is relatively large. 10000 mesh, etc. is a powder state. The fineness of micro-silica fume is less than 1μm, accounting for more than 80%, and the average particle size is 0.1-0.3μm, which is a gray state.

Application of micro silica fume:

1. Cement or concrete admixtures

2. Refractory additives

3. Metallurgical pelletizing binder

4. Chemical product dispersant