Refractory Materials
Well-T’s colloidal silica improves strength, density, workability, and high-temperature stability across castables, precast shapes, and other refractory systems.
Our portfolio includes low-sodium, ammonium-stabilized, large-particle, and modified grades for a wide range of operating conditions.
Key Advantages
Lower Impurity, Higher Stability
High-purity processing reduces low-melting phases and improves structural stability, helping extend refractory service life in demanding high-temperature environments.
Optimized for High-Temperature Conditions
Low-sodium and ammonium-stabilized grades minimize impurity-related risks, supporting reliable performance under harsh operating conditions.
Tailored Performance
With adjustable particle size, surface chemistry, and stabilization options, Well-T provides customized solutions for different refractory formulations and processes.
Featured Products
| Product | Features | Density (g/cm³) | Particle Size (m²/g) | Surface Area (nm) | SiO₂% | Na₂O% | pH | Viscoity (mm²/s) |
|---|---|---|---|---|---|---|---|---|
| SMALL PARTICLE SERIES (2) | ||||||||
 S-1430 | Sodium-Stabilized High Surface Area | 1.2 | 10-16 | 250 | 30% | ≤0.5 | 9.0-10.5 | ≤8 |
| S-1440 | Sodium-Stabilized High Surface Area | 1.3 | 10-16 | 250 | 40% | ≤0.5 | 9.0-10.5 | ≤12 |
| LARGE PARTICLE SERIES (1) | ||||||||
| SD-10050 | Sodium-Stabilized High Solids Content | 1.4 | 90-110 | 50 | 50% | ≤0.3 | 9.0-10.5 | ≤7 |
| NON SODIUM STABILIZED (1) | ||||||||
| SA-1440 | Ammonia-Stabilized | 1.3 | 10-16 | 200 | 40% | ≤0.1 | 9.0-10.5 | ≤16 |
Well-T in Action
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30 years of experience. Tailored solutions for your colloidal silica challenges.
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