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>Refractory materials > Magnesia bricks |
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Magnesia
bricks |
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Magnesia bricks Dense sintered magnesia is used
as raw material for making regular magnesia bricks. They have high
refractoriness and are resistant to corrosion and widely use in
Ihe checker chamber of glass tank furnace, non-ferrous metal netallurgical
furnace, open hearth furnace, iron mixer, Ferro alloy furnace, electric
furnace and so on. The magnesia bricks with Mgo content over95%
are produced with the magnesia made by two-step bruning pro-cess
or electro fused magnesia and fired un-der high temperature. They
possess high di-rect bonding rate and strong corrosion resis-tance
ability and are widely used in various kinds of high tempera-ture
kilns and furnace.
| sort |
Magnesia Bricks |
| Brand Specification |
QMZ 89 |
QMZ 91 |
QMZ95 |
QMZ96 |
QMZ97 |
QMZ98 |
QDMZ95 |
QDMZ96 |
QDMZ97 |
QDMZ98 |
QMGZ12 |
| MgO % ≥ |
89 |
91 |
94.5 |
95.5 |
96.5 |
97.5 |
95 |
96 |
97 |
97.5 |
75 |
| CaO % ≥ |
2.5 |
2.5 |
2.0 |
1.8 |
1.5 |
1.2 |
2.0 |
1.7 |
1.4 |
1.2 |
ZrO2≥10 |
| SiO2i % ≥ |
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2.5 |
1.5 |
1.0 |
2.5 |
2.0 |
1.5 |
1.0 |
9.0 |
| Refractoriness Under Load C≥ |
1540 |
1550 |
1620 |
1650 |
1680 |
1700 |
1650 |
1660 |
1680 |
1700 |
1700 |
| Apparent porosily % ＋ |
19 |
19 |
18 |
18 |
17 |
17 |
16 |
16 |
16 |
16 |
16 |
| Cold Crushing Strength Mpa ≥ |
55 |
55 |
55 |
55 |
55 |
60 |
60 |
60 |
60 |
60 |
60 |
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