High-Alumina Minerals for Refractory Performance
QT RefracMax™ is a high-alumina kaolin developed for refractory products requiring excellent thermal stability and resistance to high-temperature deformation.
Our refractory-grade mineral portfolio is engineered for consistent mineralogy and reliable service life across fire bricks, castables, mortars, and kiln furniture manufacturing.
Explore Industrial MineralsApplication Areas
Refractory Products
- Fire Bricks
- Refractory Mortars
- Castables
- Kiln Furniture
- High Temperature Refractories
- Insulating Refractories
Industrial & Furnace Applications
- Ladle Linings
- Furnace Linings
- Ceramic Fiber Products
- Ramming Mass
- Blast Furnace Linings
- Crucibles
Featured Product
QTM RefracMax™ is a high-alumina kaolin developed for refractory products requiring excellent thermal stability and resistance to high-temperature deformation.
| Parameter | Typical Value |
| SiO₂ | 44–46 % |
| Al₂O₃ | 36–40 % |
| Fe₂O₃ | ≤0.70 % |
| TiO₂ | ≤0.50 % |
| Loss on Ignition (LOI) | 13–15 % |
| Property | Typical Value |
| Brightness | 85–90 % |
| Moisture | <1.0 % |
| Loss on Ignition (LOI) | 13–15 % |
Grade Selection
Five calibrated grades — from fire bricks to premium high-temperature refractories.
| Product Grade | Al₂O₃ (%) | Fe₂O₃ (%) | Refractoriness | Application |
|---|---|---|---|---|
| QTM-RF 100 | 36 | 0.70 | Good | Fire Bricks |
| QTM-RF 200 | 37 | 0.55 | Better | Refractory Mortars |
| QTM-RF 300 | 38 | 0.45 | High | Castables |
| QTM-RF 400 | 39 | 0.35 | Very High | Kiln Furniture |
| QTM-RF 500 | 40 | 0.25 | Premium | High Temperature Refractories |
Key Properties
Excellent Thermal Stability
High-alumina composition resists deformation and maintains structural integrity under extreme, sustained furnace temperatures.
Low Shrinkage
Controlled mineralogy minimizes shrinkage during firing, preserving dimensional accuracy in refractory shapes and castables.
High Refractoriness
Elevated alumina content delivers superior resistance to high-temperature deformation across the grade portfolio.
Improved Service Life
Consistent batch-to-batch mineralogy extends the operational life of furnace linings, kiln furniture, and refractory castables.
Our Various Applications
Seeking the Right Refractory Mineral Grade?
Our technical team can advise on the right grade and specification for your refractory manufacturing application.
Contact Our Technical Team