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Magnesia-based Bricks
The magnesia-based bricks we export mostly are magnesia brick, magnesia-chromite brick, magnesia-alumina brick, magnesia-alumina-chromite brick and magnesia-carbon brick.
1. Magnesia Brick
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This product takes periclase as main mineral phase which is featured by good volume stability and anti-corrosion ability. It is widely used in high temperature industrial furnaces of iron & steel and non-ferrous metal melting fields. |
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| Specs \ Brand |
MZ-87 |
MZ-89 |
MZ-91 |
MZ-95 |
MZ-96 |
MZ-97 |
MZ-98 |
| MgO ≥(%) |
87 |
89 |
91 |
94.5 |
95.5 |
96.5 |
97.5 |
| CaO ≤ (%) |
3 |
3 |
3 |
2 |
2 |
2 |
2 |
| Cold Crushing Strength ≥
MPa |
39.2 |
49 |
58.8 |
39.2 |
39.2 |
39.2 |
44.1 |
| Apparent Porosity ≤ % |
20 |
20 |
18 |
20 |
20 |
18 |
18 |
| Initial Softening Temperature under load 0.2MPa ≥ºC |
1520 |
1540 |
1550 |
1620 |
1650 |
1680 |
1700 |
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2. Magnesia-Chromite Brick
2.1 Magnesia-Chromite Brick
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This product takes dead burned magnesite and chromium oxide as feed materials and is made through high pressure shaping and high temperature firing. It is featured by low heat expansion coefficient, good thermal shocking resistance and anti-corrosion ability. It is widely used in
open hearth furnace, cement rotary kiln and other industrial furnaces.
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| Specs \ Brand |
MGe-20 |
MGe-16 |
MGe-12 |
MGe-8 |
| MgO ≥(%) |
40 |
45 |
55 |
60 |
| Cr2O3 ≥(%) |
20 |
16 |
12 |
8 |
| Cold Crushing Strength ≥
MPa |
24.5 |
24.5 |
24.5 |
24.5 |
| Apparent Porosity ≤ % |
23 |
23 |
23 |
24 |
| Initial Softening Temperature under load 0.2MPa ≥ºC |
1550 |
1550 |
1550 |
1530 |
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2.2 Direct-Bonded Magnesia-Chromite Brick
Thisrefining furnace, electric arc furnace, glassmaking furnace and cement rotary kiln.
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Specs \ Brand
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DBMK-A |
DBMK-B |
SBMK-C |
| MgO ≥(%) |
80 |
80 |
80 |
| Cr2O3 ≥(%) |
6-8 |
6-8 |
6-8 |
| SiO2 ≤ (%) |
2.0 |
2.5 |
3.0 |
| Cold Crushing Strength ≥
MPa |
40 |
40 |
40 |
| Apparent Porosity ≤ % |
18 |
18 |
18 |
| Initial Softening Temperature under load 0.2MPa ≥ºC |
1680 |
1650 |
1620 |
3. Magnesia-Alumina Brick
It takes dead burned magnesite as main feed material adding some industrial grade aluminium oxide or bauxite (Al2O3≥90%) through processes of blending, shaping and firing in tunnel kiln. Its matrix (ground mass) is mainly periclase - magnesia-alumina spinel. It is featured by
very good property of anti-spalling and mostly used in the roof of open hearth furnace and high temperature position of other industrial furnaces.
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Specs \ Brand
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ML-80A |
ML-80B |
ML-84 |
ML-85A |
ML-85B |
| MgO, %,
≥ |
80 |
80 |
84 |
85 |
85 |
| Al2O3, %,
≥ |
5-10 |
5-108 |
6-8 |
4-8 |
4-8 |
| Initial Softening Temperature under load 0.2MPa ≥ºC |
1600 |
1500 |
1630 |
1650 |
1630 |
| Apparent Porosity ≤ % |
18 |
20 |
17 |
18 |
19 |
| Cold Crushing Strength ≥
MPa |
39.0 |
29.4 |
45 |
45 |
38 |
| Anti Thermal Shocking Times ≥ |
3 |
3 |
4 |
3 |
3 |
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4. Magnesia-Alumina-Chromite Brick
This product is made just by adding small amount of chromium oxide in the course of making magnesia-alumina brick and fired under high temperature which is featured by good high- temperature strength, good property of anti-spalling and higher initial softening temperature under load. It is ideal
material for making the roof of open hearth furnace.
| Brand\Specs |
MgO
%, ≥ |
Al2O3
%, ≥ |
Cr2O3
%, ≥
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Initial Softening Temperature under load 0.2MPa ≥ºC |
Apparent Porosity ≤ % |
Cold Crushing Strength ≥
MPa |
| MLGZ-95 |
89 |
6 |
1 |
1630 |
14-15 |
50-80 |
5. Magnesia-Carbon Brick (Click for entering) >>
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