LONGKETER supplying a comprehensive range of Mag Chrome Brick
Types: Common mag chrome bricks; direct-bonded magnesia chrome bricks, semi-rebonded magnesia chrome bricks; re-bonded magnesia chrome bricks.
Raw material: dead burnt magnesite, fused magnesite, pure chromite etc.
Mag Chrome Brick is mainly used in metallurgical industry, such as for building open-hearth furnace top, electric furnace top,refining furnaces for special steel grades etc.
Besides, Magnesia Chrome Brick also can be used for burning zone in rotary cement kiln and regenerative chamber in glass furnace.
Key Features for Mag Chrome Brick
•High Refractoriness
•High Temperature Strength
•Strong Basic Slag Erosion Resistance
•Good Thermal Shock Resistance
•Certain Resistance to Acid Slag
•Good Refractoriness
•Good Corrosion Resistance e.g. Basic Steelmaking Slags, Sodium Hydroxide, Fe, Co, Ni
•Low Electrical Conductivity
•Transparency to Infrared
Magnesia series bricks are also called basic bricks. The main content is MgO and main raw materials including dead burnt magnesia or fused magnesia.
Basic bricks here including magnesia fire bricks/magnesite bricks, magnesia carbon bricks, magnesia chrome bricks, magnesia spinel bricks and magnesia dolomite bricks/magnesia calcium bricks.
Producing process: Raw material Grinding---batching-- Shaped with hydraulic press-- fired in 1700C tunnel kiln--inspection and packaging in warehouse
Basic bricks are widely used in Iron and steel industry, non-ferrous industry, working linings of cement rotary kilns, glass furnaces, lime furnace etc.
Properties:
High hot strength and super resistance to basic foreign substance, steel mill slag, Alkaline Oxide. Good for thermal spalling abrasion and liquid metal penetration resistance
High melting point, high thermal conductivity and heat storage capacity. Used in heat storage and preheater plants
Good volume stability and low porosity
Thermal shock resistance and hydrated resistance of basic bricks are weak. So basic bricks are generally used to stable temperature zone and when packed, water-proof package are necessary.Besides, we advise the bricks are used as soon as possible, storing time could be 6-12 months at most.
Magnesia Chrome Brick Product Data：
|
Index |
Magnesite-Chrome Brick |
Directed Bonded Magnesite-Chrome Brick |
Semi-Rebonded Magnesite-Chrome Brick |
|||||||||||||
|
DMC-B |
DMC-C |
|||||||||||||||
|
MGe-20 |
MGe-16 |
MGe-12 |
DMC12B |
DMC9B |
DMC6B |
DMC4B |
DMC20C |
DMC18C |
DMC16C |
DMC12C |
ZMC-35 |
ZMC-28 |
ZMC-20 |
ZMC-18 |
ZMC-15 |
|
|
MgO% |
≥40 |
≥50 |
≥60 |
≥65 |
≥75 |
≥80 |
≥82 |
≥55 |
≥60 |
≥65 |
≥70 |
≥50 |
≥55 |
≥55 |
≥66 |
≥60 |
|
Cr2O3% |
≥20 |
≥16 |
≥12 |
≥12 |
≥9 |
≥6 |
≥4 |
≥20 |
≥18 |
≥16 |
≥12 |
35-37 |
28-30 |
20-22 |
18-20 |
15-18 |
|
SiO2 |
– |
– |
– |
≤2.0 |
≤1.8 |
≤1.5 |
≤1.5 |
≤2.5 |
≤2.4 |
≤2.4 |
≤2.0 |
– |
– |
– |
– |
– |
|
Refractoriness Under Load 0.2MPa℃ |
≥1700 |
≥1650 |
≥1580 |
1680 |
1680 |
1650 |
1650 |
1700 |
1700 |
1700 |
1680 |
1700 |
1700 |
1700 |
1700 |
1700 |
|
Apparent porosity% |
≤18 |
≤18 |
≤18 |
≤18 |
≤18 |
≤17 |
≤17 |
≤18 |
≤18 |
≤18 |
≤18 |
≤16 |
≤16 |
≤16 |
≤16 |
≤16 |
|
Cold Crushing Strength Mpa |
≥40 |
≥40 |
≥40 |
≥40 |
≥40 |
≥40 |
≥40 |
≥40 |
≥40 |
≥40 |
≥40 |
≥45 |
≥45 |
≥45 |
≥40 |
≥40 |
|
Bulk density(Kg/m3) |
|
|
|
3050 |
3050 |
3000 |
3000 |
3150 |
3100 |
3050 |
3000 |
3350 |
3250 |
3200 |
3100 |
3050 |
|
Thermal Shock Resistance (950℃ Air cooling ) |
– |
– |
– |
60 |
60 |
60 |
60 |
60 |
60 |
60 |
60 |
40 |
40 |
40 |
40 |
40 |
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