ZE XI MINERAL CO., LTD
Silica Fume (Microsilica)
Silica Fume (Microsilica) is an ultra-fine amorphous silicon dioxide material collected as a by-product during silicon metal or ferrosilicon production. With extremely fine particle size and high pozzolanic reactivity, silica fume is widely used in refractory castables, steelmaking, foundry applications and high-performance concrete including UHPC.
Technical Specifications
| Property | Silica Fume 96% | Silica Fume 98% |
|---|---|---|
| SiO₂ (%) | > 96.0 | > 98.0 |
| C (%) | < 2.0 | < 1.5 |
| Fe₂O₃ (%) | < 1.0 | < 1.0 |
| Moisture (%) | < 2.0 | < 1.0 |
| LOI (%) | < 2.0 | < 2.0 |
| Bulk Density (Undensified, kg/m³) | 200–350 | 200–350 |
| Bulk Density (Densified, kg/m³) | 600–750 | 600–750 |
Applications
Silica Fume is extensively used in refractory castables, ladle and tundish mixes, UHPC and high-performance concrete, oil-well cementing, shotcrete, metallurgical slag conditioning, and durability enhancement of concrete structures.
Packaging
Available in 20 kg paper bags, 500 kg jumbo bags and 900–1000 kg jumbo bags. Customized packaging solutions are available upon request.