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, add a variety of non-oxide additives, and combine with carbon binder made of non-burning carbon composite refractory.
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.Excellent high-temperature performance.
2.Strong slag resistance.
3.Good thermal shock resistance.
4.Low creep at high temperatures.
(1) Converter, electric arc furnace, lining, ladle slag line, refining furnace, etc.
(2) Oxygen converter lining, metallurgical furnace, cement furnace, ceramic furnace working lining and other parts.
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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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High alumina poly light brick is a high quality lightweight refractory material.
Alumina content is 48%-60% Refractoriness is above 1770℃
