High-purity amorphous silica derived from rice husks (SiO₂ 87–92%). SILCOSIS HIGH grade — low carbon content, consistent particle size distribution, and excellent performance as a filler and refractory additive.
Rice husk ash is an amorphous biogeneous silica produced by the controlled combustion of rice husks. The resulting product is predominantly composed of amorphous silica (SiO₂) with minor amounts of Tridymite and Cristobalite. It is characterised by its white powder or flake appearance, low bulk density, and excellent chemical purity.
Rawchem supplies the SILCOSIS HIGH grade — a premium product meeting stringent chemical and physical specifications for use in construction, refractory, rubber, agriculture, and various industrial applications. Its high silica content and low impurity profile make it ideal as a functional filler and active additive.
SILCOSIS HIGH grade specifications. Contact us for full certificates of analysis.
| Parameter | Specification |
|---|---|
| Grain Size > 0.5 mm | Max. 20% |
| Grain Size > 0.1 mm | Max. 80% |
| Grain Size <0.1–0.063 mm | Max. 15% |
| Grain Size < 0.063 mm | Max. 5% |
| Moisture (at 105°C) | 1.50–2.00% |
| Bulk Density | 180–220 g/L |
| Carbon Content | Under 5% |
| Appearance | Powder / Flakes |
| Packaging | 10 kg plastic bags in 500 kg jumbo bag |
| Parameter | Specification |
|---|---|
| SiO₂ | 87–92% |
| Al₂O₃ | ≤ 2% |
| Fe₂O₃ | < 0.5% |
| Loss on Ignition | ≤ 1% |
| Mineralogical Composition | Amorphous Silica, Tridymite & Cristobalite |
| Product Code | SILCOSIS HIGH |
Construction materials, refractory, rubber, agriculture, filtration and more.
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