Chrome corundum bricks are made of α-Al2O3 as raw material, with appropriate amount of chromium oxide powder and chrome corundum clinker fine powder added, and then formed and fired at high temperature. The main mineral composition is α-Al2O3-Cr2O3 solid solution, the secondary mineral is composed of a small amount of composite spinel (or no composite spinel), and the chromium oxide content is 1% to 30% of the refractory bricks.
| Fused Chrome Corundum Brick | KR-G92-Cr | |
|---|---|---|
| Chemical Composition（%） | Al2O3 | ≥92 |
| SiO2 | ≤1.0 | |
| Fe2O3 | ≤0.3 | |
| CaO | ≤1.2 | |
| Na2O | – | |
| ZrO2 | ≥3 | |
| Cr2O3 | ≥3 | |
| Apparent Porosity (%) | ≤15 | |
| Bulk density（g/cm3） | ≥3.25 | |
| Pressure strength（Mpa） | ≥180 | |
| High temperature flexural strength（1250℃ Mpa) | ≥9.5 | |
| Refractoriness（℃） | ≥1900 | |
| Load softening temperature（0.2Mpa T0.6 ℃） | ≥1680 | |
| Burning line rate of change % （1500℃×2h) | ≤±1.2 | |
1.High refractoriness 2.Load Softening Temperature 3.Excellent thermal shock resistance 4.Excellent slag resistance 5.Excellent slag resistance 6.Low Thermal Conductivity
1.Metallurgical industry: steelmaking furnace, refining furnace, etc.; 2.Glass industry: glass kiln; 3.Ceramic industry: high temperature kiln, which can resist high temperature erosion and scouring and increase the service life of the furnace.