Magnesia chrome bricks properties
High refractoriness and refractoriness under load.
Good resistance to the corrosion of glass liquid, molten steel and slag.
Good thermal shock resistance and spalling resistance.
Good mechanical strength, low creep rate.
Good volume stability.
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info@rsrefractories.comMagnesia chrome bricks are basic refractory bricks in which periclase and magnesia chrome spinel are primary crystalline phases. The sintering temperature of magnesia chrome bricks is 1550~1600℃. RS company produces all grades of magnesia chrome bricks, including general application magnesia chrome bricks, direct bonded magnesia chrome bricks, semi-rebonded magnesia chrome bricks, rebonded magnesia chrome bricks, high chrome bricks, chemical bonded magnesia chrome bricks, fused cast magnesia chrome bricks and so on. Besides, shaped magnesia chrome bricks, special shape magnesia chrome bricks can be produced according to customer’s requirement. We also offer refractory products design and manufacturing service according to customer’s actual applications.
Common magnesite chrome brick
|
Items |
Physical and Chemical characters |
|||||
|
MGe-16A |
MGe-16B |
MGe-12A |
MGe-12B |
MGe-8A |
MGe-8B |
|
|
MgO % ≥ |
60 |
45 |
60 |
55 |
65 |
60 |
|
Cr2O3 % ≥ |
16 |
16 |
12 |
12 |
8 |
8 |
|
Apparent Porosity % ≤ |
19 |
22 |
19 |
21 |
19 |
21 |
|
Cold Crushing Strength MPa≥ |
35 |
25 |
35 |
30 |
35 |
30 |
|
Refractoriness Under Load °C≥ |
1650 |
1550 |
1650 |
1550 |
1650 |
1530 |
Direct-Bonded magnesite chrome brick
|
Items |
Physical and Chemical characters |
||||||
|
ZMGe-16A |
ZMGe-16B |
ZMGe-12A |
ZMGe-12B |
ZMGe-8A |
ZMGe-8B |
ZMGe-6 |
|
|
MgO % ≥ |
60 |
58 |
68 |
65 |
75 |
70 |
75 |
|
Cr2O3 % ≥ |
16 |
16 |
12 |
12 |
8 |
8 |
6 |
|
SiO2 % |
1.5 |
2.5 |
1.5 |
2.5 |
1.5 |
2.5 |
2.5 |
|
Apparent Porosity % ≤ |
18 |
18 |
18 |
18 |
18 |
18 |
18 |
|
Cold Crushing Strength MPa ≥ |
40 |
40 |
45 |
45 |
45 |
45 |
45 |
|
Refractoriness Under Load °C ≥ |
1700 |
1650 |
1700 |
1650 |
1700 |
1650 |
1700 |
Magnesia Chrome Bricks Applications
The refractoriness under load of magnesia chrome bricks is higher than 1550℃, and their high temperature volume stability is good, thermal shock property is better than magnesia bricks. Ordinary magnesia chrome bricks feature in simple production craft and low price, they are widely used in rotary cement kiln(Cr2O3 content is usually below 14%), glass kiln regenerator, steel smelting furnace lining, refining steel ladle permanent lining, nonferrous metals smelting furnaces, lime kiln, metal mixer, high temperature refractory material sintering kiln working lining and so on.
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