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 Home > Product Information > Sekyung Corporation > Refractory |
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ALUMINA SPINEL FOR INDUCTION FURNACE
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It is a spinel with special mixing ratio and selected raw materials high purity and density will bring more benefits of
very low infiltration/ erosion, low crack appearance, also this safety layer (powder layer) will bring safety operation
for longer time than any other magnesia or magnesia-alumina base refractories for property. |
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| ◎ PROPERTIES |
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Division |
A type |
B type |
C type |
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Chemical
Composition
(%) |
Al 2 O 3 |
85.5 |
88.2 |
86.8 |
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MgO |
14.1 |
11.23 |
12.83 |
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CaO |
0.03 |
0.19 |
0.09 |
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SiO 2 |
0.1 |
0.08 |
0.06 |
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Fe 2 O 3 |
0.1 |
0.10 |
0.04 |
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Na 2 O 3 |
0.17 |
0.20 |
0.15 |
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Particle size
distribution
(%) |
5-3 m/m |
10 |
10 |
12 |
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3-1 m/m |
18 |
30 |
30 |
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-1 m/m |
72 |
60 |
58 |
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계 |
100 |
100 |
100 |
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SPINEL ratio within raw materials (%) |
20~40 |
20 ~ 40 |
20 ~ 40 |
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TAP Density (g/ ㎤ ) |
2.90 ~ 2.94 |
2.90 ~ 2.94 |
2.90 ~ 2.94 |
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Permanent Linear Change (1400℃ after) |
+0.1 ~ +0.3 |
+0.1 ~ +0.3 |
+0.1 ~ +0.3 |
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Max Operating Temperature |
1,750℃ |
1,750℃ |
1,750 ° c |
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Building Amount (/ ㎥ ) |
2.94 Ton |
2.94 Ton |
2.94 Ton |
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