The Al₂O₃ and K₂O content in the silica composition of the region indicates the presence of kaolin in the raw mineral, which is also confirmed by XRD analysis. These minerals are very fine-grained and, after washing in the processing unit, are separated from the silica product and settle in sedimentation ponds.
This product has a particle size below 30 µm and exhibits high plasticity and M.O.R (Modulus of Rupture) both in the dry state and after firing. The presence of K₂O ensures complete sintering at temperatures above 1150 °C, making it suitable as a component in the formulation of porcelain tiles and sanitary ceramics.
Purchase of Coated Silica
SFJ-CL: Strong Chemical Bonding for Performance Beyond Expectations
SFJ-CL, or coated silica, is not an ordinary micronized silica; it is an innovative solution designed to overcome key challenges in the polymer and composite industries. The common issue of poor compatibility between mineral fillers (silica) and organic matrices (polymers) often leads to reduced mechanical properties and durability in the final product. SFJ-CL addresses this problem by creating a strong “chemical bridge” between silica and polymer chains.
During production, high-purity micronized silica particles are carefully coated with silane coupling agents. This hydrophobic coating not only facilitates particle dispersion within the polymer matrix but also forms a strong covalent bond, providing your product with exceptional performance characteristics.
Chemical Specifications – Product Code: CL
| Chemical Property | Percentage (%) | Technical Significance (Why It Matters) |
|---|---|---|
| SiO₂ (Base Silica) | 82.4 | Provides the primary mineral framework, ensuring consistent fundamental properties of the final product. |
| Al₂O₃ (Alumina) | 10.5 | Structural reinforcement: enhances mechanical strength and abrasion resistance in end-use compounds. |
| CaO (Calcium Oxide) | 1.76 | Controls alkalinity: influences pH and reactivity, improving thermal stability and overall performance. |
| Fe₂O₃ (Iron Oxide) | 0.73 | Color and brightness control: managed iron content makes it suitable for applications where pure whiteness is not critical. |
| Surface Treatment – Silane Coupling Agent | — | Core functionality: forms a chemical bridge between the inorganic silica phase and the organic polymer phase, delivering strong bonding, excellent dispersion, and hydrophobicity. |
| Oil Absorption (OAN) – Reduced | — | Improves processability: lower oil absorption decreases compound viscosity, enabling faster and easier manufacturing. |
Sample Code: CL
| Mesh | mm | μ (میکرون) | Sample % | Total (%) Sample |
|---|---|---|---|---|
| 10 | 2 | 2000 | 0 | 0 |
| 14 | 1.4 | 1400 | 0 | 0 |
| 18 | 1 | 1000 | 0 | 0 |
| 35 | 0.5 | 500 | 0 | 0 |
| 40 | 0.4 | 400 | 0 | 0 |
| 50 | 0.3 | 300 | 0 | 0 |
| 80 | 0.17 | 177 | 0 | 0 |
| 100 | 0.15 | 150 | 0 | 0 |
| 120 | 0.12 | 120 | 0 | 0 |
| 170 | 0.09 | 90 | 0 | 0 |
| 230 | 0.06 | 60 | 0 | 0 |
| 400 | 0.03 | 30 | 0 | 0 |
| Pan | Pan | Pan | 100 | 100 |
