Huachen Refractory
Magnesia chrome refractory brick plant from China
Phone/WhatsApp
008618939512185
Email :info@hcrefractory.com
www.magnesiachromebrick.com
Huachen Refractory
Magnesia chrome refractory brick plant from China
Direct rebonded magnesia chrome brick
Other name: Direct rebonded Mgo-CrO refractory brick
Model Number: DMC12A,DMC9A,DMC12B,DMC9B,DMC20C,DMC18C,DMC16C,DMC12C
Certification: ISO9001-14001
Minimum Order Quantity: 5 MT
Direct rebonded magnesia chrome brick
Direct rebonded magnesia chrome brick Introduction
Direct rebonded magnesia chrome refractory bricks uses high purity sintered magnesia and chromium concentrate as main raw materials, manufactured by sintering at high temperature or ultra-high temperature. In order to form direct bonded, the SiO2 content in raw materials is best to low, and that the sintering temperature must be raised to about 1700℃.
Direct rebonded magnesia chrome brick Features
Direct rebonded magnesia chrome refractory bricks for RH furnace have the advantages of less impurities, lower porosity, high strength, strong abrasion resistance, high corrosion resistance, high thermal shock-resistance and flake resistance.
Direct rebonded magnesia chrome brick Physical and Chemical Index
Index | DMC12A | DMC9A | DMC12B | DMC9B | DMC20C | DMC18C | DMC16C | DMC12C |
MgO(%) ≥ | 65 | 70 | 65 | 75 | 55 | 60 | 65 | 70 |
Cr2O3(%) ≥ | 12 | 9 | 12 | 9 | 20 | 18 | 16 | 12 |
SiO2(%) ≤ | 2.5 | 2.2 | 2.0 | 1.8 | 2.5 | 2.4 | 2.4 | 2.0 |
Apparent porosity(%) ≤ | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 |
Bulk density(g/cm3) ≥ | 3.00 | 3.00 | 3.05 | 3.05 | 3.15 | 3.10 | 3.05 | 3.00 |
Cold Crushing Strength MPa ≥ | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 |
Refractoriness Under Load 0.2MPa℃ | 1650 | 1650 | 1680 | 1680 | 1700 | 1700 | 1700 | 1680 |
Thermal Shock Resistance 950℃ Air cooling, 1100℃ Water cooling (times) ≥ | 4 | 4 | 6 | 6 | 6 | 6 | 6 | 6 |
Direct rebonded magnesia chrome brick Application
Refractory direct bonded magnesia chrome bricks are mainly used as permanent linings in lower vessel and snorkel etc. Besides, direct bonded magnesia chrome bricks are also used for VOD furnace barrel.
