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AMR series of magnesia-chrome bricks are composite basic refractory products, made from magnesite and chromite burned at high temperature or ultra-high temperatures. 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 and cement kilns. |
Magnesia-Chrome Brick |
Brand |
HG-8A |
HG-8B |
HG-12A |
HG-12B |
HG-16A |
HG-16B |
HG-20A |
HG-20B |
HG-22 |
MgO % Min. |
65 |
60 |
60 |
55 |
50 |
45 |
45 |
40 |
46 |
Cr2O3 % Min. |
8 |
8 |
12 |
12 |
16 |
16 |
20 |
20 |
22 |
Apparent Porosity % Max. |
20 |
20 |
20 |
20 |
20 |
23 |
20 |
23 |
20 |
Cold Crushing Strength MPa Min. |
35 |
30 |
35 |
30 |
35 |
30 |
35 |
30 |
35 |
Refractoriness under Load ℃ Min. |
1620 |
1550 |
1620 |
1580 |
1620 |
1580 |
1640 |
1580 |
1600 |
Direct-Bonded Magnesite-Chrome Bricks |
Brand |
HDB-4 |
HDB-6 |
HDB-8A |
HDB-8B |
HDB-12A |
HDB-12B |
HDB-16A |
HDB-16B |
HDB-18A |
HDB-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 |
Brand |
HSR-16A |
HSR-16B |
HSR-20A |
HSR-20B |
HR-16A |
HR-16B |
HR-20A |
HR-20B |
HR-24 |
HR-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 |
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