Micro Silica: Explained In Short
by : Rahul Sharma
​Micro Silica:
- Silicon Dioxide (SiO2) – Amorphous > 85% from Silicon metal Alloys
- Silicon Dioxide (SiO2) – Amorphous < 85% from Ferro Silicon Metal Alloys
- Silicon Dioxide (SiO2) - Crystalline < 0.05%
- Colour - Gray to medium gray powder
- Specific Gravity - 2.10 to 2.40
- Solubility in water - Insoluble
- Bulk Density - Densified - 608 to 720 kg/m3
- Specific Surface Area
- Super Refractory Grade – 22-25 m2/g- Silicon Metal production
- Standard grade – 15-20 m2/g –Ferrosilicon production
- Dark colour – High carbon content
- Light colour – Low carbon content
- Particle size is almost 100 times finer than cement
