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Characteristics
MASRAM 85 as the unshaped refractories for high and
low frequency induction furnace is mixed a SPINEL
manufactured specially, a high quality Magnesia and
Alumina in order to supplement the demerits of existing
magnesia base or magnesia-alumina base refractories.
And customer are able to operate introduction furnace
under safe condition because of MASRAM's small
infiltration of slag and ground metal, low erosion, low
occurrence of crack and preservation of sufficient safety
layer(powder layer).
Properties
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Division
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A type
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B type
|
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Chemical Composition
(%)
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Al2O3
|
85.5
|
88.2
|
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MgO
|
14.1
|
11.23
|
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CaO
|
0.03
|
0.19
|
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SiO2
|
0.1
|
0.08
|
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Fe2O3
|
0.1
|
0.10
|
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Na2O3
|
0.17
|
0.20
|
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Particle size distribution
(%)
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5-3 m/m
|
10
|
10
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3-1 m/m
|
18
|
30
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-1 m/m
|
72
|
60
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100
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100
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SPINEL ratio within raw materials (%)
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20~40
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20 ~ 40
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TAP Density (g/㎤)
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2.90 ~ 2.94
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2.90 ~ 2.94
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Permanent Linear Change (1400°C after)
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+0.1 ~ +0.3
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+0.1 ~ +0.3
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Max Operating Temperature
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1,750°C
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1,750°C
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Building Amount (/㎥)
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2.94 Ton
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2.94 Ton
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Uses
- Monolithic refractories for induction furnace
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