Honsin series of magnesia-chrome bricks are composite basic refractory products, made by magnesite and chromite which are burned at high temperature or ultra-high temperature. The products show the features of excellent resistance against slag, high fired strength, good erosion resistance and thermal shock resistance. They can be applied in AOD/VOD refining furnace, DH/RH degassing device, and lining of nonferrous metal converter.
Typical product characteristics tables :
Direct-Bonded Magnesiate-Chrome Bricks | ||||||||||
Brand | DB-4 | DB-6 | DB-8A | DB-8B | DB-12A | DB-12B | DB-16A | DB-16B | DB-18A | DB-18B |
MgO % Min. | 80 | 75 | 74 | 74 | 66 | 66 | 60 | 60 | 58 | 58 |
Cr2O3 % Min. | 4 | 6 | 8 | 8 | 12 | 12 | 16 | 16 | 18 | 18 |
SiO2% Max. | 2.0 | 2.0 | 1.5 | 2.0 | 1.5 | 2.0 | 1.5 | 2.0 | 1.5 | 2.0 |
Apparent Porosity % Max. | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 |
Cold Crushing Strength MPa Min. | 40 | 40 | 40 | 35 | 40 | 35 | 40 | 35 | 40 | 35 |
Refractoriness under Load ℃ Min. | 1600 | 1600 | 1600 | 1600 | 1600 | 1600 | 1600 | 1600 | 1600 | 1600 |
Semi-Rebonded MgO-Cr2O3 brick |
Rebonded MgO-Cr2O3 brick |
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Brand | SR-16A | SR-16B | SR-20A | SR-20B | R-16A | R-16B | R-20A | R-20B | R-24 | R-26 |
MgO % Min. | 60 | 60 | 55 | 55 | 65 | 60 | 60 | 60 | 52 | 50 |
Cr2O3% Min. | 16 | 16 | 20 | 20 | 16 | 16 | 20 | 20 | 22 | 24 |
SiO2% Max. | 1.5 | 1.8 | 1.5 | 1.8 | 1.2 | 1.6 | 1.2 | 1.2 | 1.2 | 1.2 |
Apparent Porosity % Max. | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 16 |
Cold Crushing Strength MPa Min. | 40 | 35 | 40 | 35 | 45 | 40 | 45 | 40 | 45 | 45 |
Refractoriness under Load ℃ Min. | 1750 | 1700 | 1750 | 1700 | 1750 | 1700 | 1750 | 1700 | 1750 | 1750 |