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>Refractory materials >Magnesia-chrome refractories |
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Magnesia-chrome
refractories |
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Burnt magnesia-chrome bricks are made from high quality mag-nesia
and chrome concentrate, cr2o3 content can be adjusted accord ing
to different requirements. The bricks have good thermal stability
and high temperature performance, and are widely used in cement
kilns and non-ferrous rnetal metallur-gical furnaces and so on.
High temperature burnt directly bonded magnesia-chrome bricks, semi-rebonded
magne-sia-chrome bricks and rebonded magnesia-chrome bricks are
made from low impurity raw materials. All or part of raw ma-terials
are preburnt or electro fused. The best proportioning, high pressure
moulding, ultra high temperature and good vol-ume stability. The
bricks are widely used in large cement ro-tary kiln, and secondary
refining units such as RH, VOD, AOD furnaces, non-ferrous metal
met-allurgical furnaces, glass tanks and so on.
magnesia-chrome specifications
| Sort |
Magnesia-Chrome Brick |
| Brand Speification |
QMGe 8A |
QMGe 8B |
QMGu 12A |
QMGe 12B |
QMGe I6A |
QMGe 16B |
QMGe 20A |
QMGe 20B |
QMGe 22 |
| MgO %≥ |
65 |
60 |
60 |
55 |
50 |
45 |
45 |
40 |
46 |
| Cr2O3 %≥ |
8 |
8 |
12 |
12 |
16 |
16 |
20 |
20 |
22 |
| Apparent Porosity%≤ |
20 |
20 |
20 |
20 |
20 |
23 |
20 |
23 |
20 |
| Cold Crushing Strength Mpa ≥ |
35 |
30 |
35 |
30 |
35 |
30 |
35 |
30 |
35 |
| Refractoriness Under Load C ≥ |
1620 |
1550 |
1620 |
1580 |
1620 |
1580 |
1640 |
158O |
ifiOU |
Rebonded magnesia-chrome specifications
| Sort |
Rebonded Magnesia-Chrome Bricks |
| Brand Specification |
QDMGe 16A |
QDMGe 16B |
QDMGe 20A |
QDMGc 2 0B |
QDMGe 24 |
QDMGe 26 |
| MgO % ≥ |
65 |
60 |
60 |
60 |
52 |
50 |
| Cr2O3i % ≥ |
16 |
16 |
20 |
20 |
22 |
24 |
| SiO2 % ≤ |
1.2 |
1.6 |
1.2 |
1.l |
1.2 |
1.2 |
| Apparent Porosity % ≤ |
16 |
16 |
16 |
16 |
16 |
16 |
| Cold Crushing Strength Mpa ≥ |
45 |
40 |
45 |
40 |
45 |
45 |
| Refractoriness Under Load C ≥ |
1750 |
1700 |
1750 |
1700 |
1750 |
1750 |
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