Magnesia carbon brick is a non-burning carbon composite refractory with high melting point basic oxide magnesium oxide (melting point 2800℃) and high melting point carbon material which is difficult to be penetrated by slag as raw materials, adding various non-oxide additives and combining with carbon binder.
As a kind of composite refractory material, magnesia carbon brick effectively utilizes the strong slag resistance of magnesia and the high thermal conductivity and low expansion of carbon to compensate for the poor spalling resistance of magnesia.
(1)Good thermal shock resistance
(2)Good thermal conductiviy
(3) Strong slag resistance
(4) Good chemical stability
(5) Long service life
Metallurgical industry、chemical industry、aerospace and nuclear industry
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Item |
Index |
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|
MT-5A |
MT-8A |
MT-10A |
MT-12A |
MT-14A |
MT-16A |
MT-18A |
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|
Chemical composition/%≥ |
MgO |
85.0 |
82.0 |
80.0 |
78.0 |
76.0 |
74.0 |
72.0 |
|
C |
5.0 |
8.0 |
10.0 |
12.0 |
16.0 |
16.0 |
18.0 |
|
|
Apparent porosity/%≤ |
5.0 |
4.5 |
4.0 |
4.0 |
3.5 |
3.5 |
3.0 |
|
|
Body density（g/cm3≥） |
3.10 |
3.05 |
3.02 |
2.97 |
2.95 |
2.92 |
2.89 |
|
|
Cold pressing strength/Mpa |
50.0 |
45.0 |
40.0 |
40.0 |
38.0 |
35.0 |
35.0 |
|
|
High temperature folding strength/Mpa（1400°C ×0.5h）≥ |
6.0 |
6.0 |
10.0 |
8.0 |
10.0 |
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