Silica Fume is also known as micro silica. It's one of the by-product while producing silicon metal and ferrosilicon products.
Product: | Silica Fume |
HS Code: | 28112200 |
Appearance: | Metallic dark grey color, micro powder form. |
Function: | Consists primarily of amorphous (non-crystalline) silicon dioxide. Due to its fine particles, large surface area,and the high silicon dioxode content, silica fume is a very reactive "pozzolan" (forms cementitious properties when mixed with water and calcium hydroxide) when used in concrete. |
Product Size Distribution: | As per list. |
General Packing: | 1MT per woven bag Or can be customized as per requirements. |
Application: | In the production of concrete in which its compressive strength, bond strength and abrasive resistance to improve the properties of the concrete, useful in supporting high rise building structures. |
Standard Material | % | % |
SF90 Grade | SF92 Grade | |
SiO2 | 90% min | 92% min |
Al2O3 | 1% max | 1% max |
Fe2O3 | 2% max | 2% max |
CaO | 3% max | 3% max |
MgO | 3% max | 3% max |
C | 3% max | 3% max |
Na2O | 3% max | 3% max |
K2O | 3% max | 3% max |
Moisture content @ 105C | 1.5% max | Not specified |
Loss on ignition @ 950C | 6% max | 6% max |
Grit size: | >45 Micron 5% | <45 Micron 90% |
Bulk density: (densified) | 600-750kg/m3 | 500-700kg/m3 |
Bulk density: (undensified) | 280-350kg/m3 | 250-400kg/m3 |