Chromium Ore Powder for Producing magnesia-chrome bricks and Aluminum-chrome Bricks 3-5 microns
Introduction
Our high-purity chromium ore powder (3-5 microns) is specially processed for manufacturing magnesia-chrome (MgO-Cr₂O₃) and aluminum-chrome (Al₂O₃-Cr₂O₃) refractory bricks. With a controlled ultrafine particle size and optimized chemical composition, this material enhances the performance of refractory products in extreme thermal and corrosive environments.
Key Specifications
| Cr2O3 | ≥46.0% |
| SiO2 | ≤1.0% |
| FeO | ≤26.5% |
| CaO | ≤0.30% |
| MgO | ≤10.0% |
| Al2O3 | ≤15.5% |
| P | ≤0.003% |
| S | ≤0.003% |
| Cr/Fe | 1.55:1 |
| Bulk Density | 2.5-3g/cm3 |
| Color | Black |
| PH | 7-9 |
| The amount of the acid | ≤ 2 ML |
| Percent soil | ≤0.1 |
| Percent Moisture | ≤0.1 |
| The sintered | 1600℃ |
| Percentage of free acid present in the
sand |
0 |
| filling density | 2.6g/cm3 |
| sintering point | > 1,800℃ |
| melting temperature | 2,180℃ |
Applications in Refractory Bricks
1. Magnesia-Chrome Bricks (MgO-Cr₂O₃)
Used in:
- Steelmaking (EAF, ladles, AOD converters)
- Non-ferrous metal smelting (copper, nickel)
- Cement rotary kilns
Benefits:
✔ Improved thermal shock resistance
✔ Enhanced corrosion resistance against basic slags
✔ Higher mechanical strength at elevated temperatures
2. Aluminum-Chrome Bricks (Al₂O₃-Cr₂O₃)
Used in:
- Glass furnaces
- Petrochemical reactors
- Waste incineration systems
Benefits:
✔ Superior oxidation resistance
✔ Excellent alkali and acid slag resistance
✔ Longer service life in cyclic heating conditions
Advantages of Our Chromium Ore Powder
✅ Ultrafine & Uniform Particle Size – Ensures better sintering and densification in refractory matrices.
✅ High Chemical Purity – Low impurities minimize unwanted reactions.
✅ Optimized for Refractory Bonding – Enhances direct bonding with MgO or Al₂O grains.
✅ Cost-Effective Performance – Extends refractory lifespan, reducing downtime and maintenance costs.
Conclusion
Our 3-5 micron chromium ore powder is an ideal raw material for producing high-performance magnesia-chrome and aluminum-chrome bricks, offering exceptional thermal stability, corrosion resistance, and mechanical durability. Suitable for demanding industrial applications, it ensures reliable performance in extreme conditions.
For customized specifications or technical support, please contact us for further details.
