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Direct-bonded magnesia-chrome Brick
It directly combines the characteristics of magnesia-chrome bricks: excellent high temperature performance and corrosion resistance. Mainly used in new dry process cement kiln firing zone, glass kiln regenerator lattice and other industrial kiln refractories; high strength, corrosion resistance, good slag resistance and thermal stability. Mainly used in non-ferrous converter, glass kiln and cement kiln firing zone.
| Items | Direct-bonded magnesia-chrome Brick | |||||||
HTBDCr-4 | HTBDCr-6 | HTBDCr-8A | HTBDCr-8B | HTBDCr-9A | HTBDCr-9B | HTBDCr-12 | HTBDCr-26 | |
MgO% ≥ | 80 | 75 | 80 | 75 | 70 | 70 | 60 | 55 |
SiO2% ≥ | 2.5 | 2.8 | 1.5 | 2 | 2.8 | 3.0 | 1.8 | 2.0 |
Cr2O3% ≤ | 4 | 6 | 8 | 8 | 9 | 9 | 12 | 26 |
Apparent porosity % ≤ | 18 | 18 | 17 | 18 | 19 | 19 | 18 | 20 |
Cold Crushing strength Mpa ≥ | 40 | 40 | 40 | 45 | 40 | 40 | 40 | 40 |
Refractoriness under load 0.2Mpa ≥ | 1600 | 1600 | 1700 | 1650 | 1600 | 1580 | 1650 | 1700 |
Thermal shock resistance(1100℃air cool times) | ≥ 5 | ≥ 5 | ≥ 5 | ≥ 5 | ≥ 5 | ≥ 5 | ≥ 5 | / |
