44-46 % Chrome Ore Powder 2500 mesh for Chrome-magnesia Refractory Brick
In the production of chrome-magnesia bricks, 2500 mesh chromium ore powder is mainly used in the following aspects:
1. Improve density
Fine particle filling: 2500 mesh chromium ore powder has fine particles, which can effectively fill the pores in the brick body and improve density.
Reduce porosity: High fineness helps to reduce porosity and enhance the mechanical strength and corrosion resistance of the brick body.
2. Improve sintering performance
Promote sintering: Fine particles increase the specific surface area, which helps the diffusion of materials during the sintering process and promotes densification.
Reduce sintering temperature: High fineness particles can achieve good sintering at a lower temperature and save energy.
3. Enhance slag erosion resistance
Uniform distribution: Fine particles of chromium ore powder are evenly distributed in the brick body, improving the ability to resist slag erosion.
Chemical stability: Chromium ore powder has stable chemical properties and can effectively resist slag erosion.
4. Optimize physical properties
Improve strength: Fine particle filling and good sintering significantly improve the mechanical strength of the brick body.
Enhance thermal shock stability: Uniform microstructure helps improve thermal shock resistance.
5. Improve process performance
Improve plasticity: Fine particles increase the plasticity of raw materials and facilitate molding.
Reduce cracking: Uniform particle distribution reduces the risk of cracking during drying and sintering.
6. Reduce costs
Reduce dosage: High-fineness chromium ore powder can reduce dosage without affecting performance and reduce raw material costs.
Improve yield rate: Optimizing process performance helps to improve yield rate and reduce scrap.
Chemical composition of 44-46 % Chrome Ore Powder 2500 mesh for Chrome-magnesia Refractory Brick：
| Chemical | Standard Value | Typical Value |
| Cr2O3 | ≥46.0% | 46.36% |
| SiO2 | ≤1.0% | 0.94% |
| FeO+Fe2O3 | 26-28% | 27.01% |
| AL2O3 | ≤15.5% | 13.62% |
| TiO2 | ≤1.0% | 0.63% |
| CaO | ≤0.3% | 0.12% |
| MgO | ≤10% | 9.35% |
| Na2O | ≤0.5% | 0.12% |
| MnO | ≤0.5% | 0.32% |
| ZnO | ≤0.2% | 0.088% |
| NiO | ≤0.2% | 0.107% |
| P | ≤0.003% | / |
| S | ≤0.003% | / |
Production details of 44-46 % Chrome Ore Powder 2500 mesh for Chrome-magnesia Refractory Brick：
