Magnesia Chromite Brick
Other name: Magnesia Chrome brick
Model Number: HCR8A, HCR12A, HCR9A, HCR6, HCR4, HCR Ge
Certification: ISO 9001-14001
Minimum Order Quantity: 5MT
Direct bonded magnesia-chromite brick
Introduction:
Direct
bonded magnesia-chromite brick is made of chromium concentrate and high
purity sintered or fused magnesia, by high temperature or super
temperature sintering.
Advantages:
Low apparent porosity, high cold crushing strength, strong wear
resistance, erosion resistance, excellent thermal shock resistance
Application:
Calcining zone of more than 1000t/d NSP cement rotary kiln, lime kiln
Special magnesia-chromite brick
Introduction:
Super magnesia-chromite brick is made of high purity compound spinel, by high pressure molding and high temperature sintering.
Advantages:
Excellent resistance to peeling and erosion, excellent cold crushing strength and thermal stability, strong thermal shock resistance, low Cr2O3 content
Application:
Calcining zone of more than 4000t/d NSP cement rotary kiln, lime kiln
Magnesia-chromite brick phycial and chemical
| Item | HCR 8A | HCR 12A | HCR 9A | HCR 6 | HCR 4 | HCR Ge |
| MgO min% | 82 | 75 | 70 | 75 | 80 | 80 |
| Cr₂O₃ min% | 8 | 12 | 9 | 6 | 4 | 3~5 |
| SiO₂ MAX% | 1.5 | 1.5 | 2.8 | 2.8 | 2.5 | 1.5 |
| Apparent porosity MAX % | 17 | 17 | 19 | 18 | 18 | 18 |
| Bulk Density g/cm³ | 3 | 3.05 | 3 | 2.95 | 2.93 | 3 |
| Cold Crushing Strength Mpa ≥ | 45 | 45 | 40 | 40 | 40 | 45 |
| Refractoriness under load of 0.2Mpa(℃) | 1700 | 1700 | 1600 | 1600 | 1600 | 1650 |
| Thermal shock stability (950℃ air cold) > | 80 | 80 | 60 | 60 | 60 | 80 |
| Thermal Conductivity (1000℃)W/m.k ≤ | 2.8 | 2.8 | 2.8 | 2.9 | - | - |
| Therm.Exp (1400℃) % | 1.5 | 1.5 | 1.5 | 1.4 | - | - |
