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Ordinary magnesium chromium bricks
Numbering
Affiliate classification Direct-bonded magnesite chrome brick
Weight 0
Product Description
Product Overview:
Direct-bonded magnesite chrome brick uses high-purity magnesite and chrome concentrate as the main raw materials. It is fired at a temperature above 1700 ℃, and most of its refractory grains are in direct contact. Divided into Direct-bonded magnesite chrome brick for cement kiln and Direct-bonded magnesite chrome brick for glass kiln according to application. Direct-bonded magnesite chrome brick for cement kiln is divided into two grades of low chromium type and medium chromium type according to Cr2O3 content. Glass Direct-bonded magnesite chrome brick for kiln is high-chromium type DMC-12.
Physical and chemical indicators：
| Item | For cement kilnsDirect-bonded magnesite chrome brick | For glass kilnDirect-bonded magnesite chrome brick | ||
| Medium chromium type | Low chromium type | DMC-12 | ||
| MgO % ≥ | 73 | 80 | 70 | |
| Cr2O3 % | 7～10 | 2～5 | ≥12 | |
| SiO2 % ≤ | 1.8 | 2.0 | ||
| Bulk Density g/cm³ ≥ | 3.0 | |||
| Apparent porosity % ≤ | 18 | 18 | ||
| Compressive strength at room temperature Mpa ≥ | 50 | 55 | 45 | |
| Load softening start temperature T0.6 ℃ ≥ | 1650 | 1600 | 1650 | |
|
Thermal shock stability Times ≥ |
1100℃,Water cooling | 5 | 5 | |
| 950℃,Air chill | 30 | |||