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ALUMINA SPINEL FOR INDUCTION FURNACE

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.

 
 
◎ PROPERTIES

Division

A type

B type

C type

Chemical

Composition
(%)

Al 2 O 3

85.5

88.2

86.8

MgO

14.1

11.23

12.83

CaO

0.03

0.19

0.09

SiO 2

0.1

0.08

0.06

Fe 2 O 3

0.1

0.10

0.04

Na 2 O 3

0.17

0.20

0.15

Particle size

distribution
(%)

5-3 m/m

10

10

12

3-1 m/m

18

30

30

-1 m/m

72

60

58

100

100

100

SPINEL ratio within raw materials (%)

20~40

20 ~ 40

20 ~ 40

TAP Density (g/ ㎤ )

2.90 ~ 2.94

2.90 ~ 2.94

2.90 ~ 2.94

Permanent Linear Change (1400℃ after)

+0.1 ~ +0.3

+0.1 ~ +0.3

+0.1 ~ +0.3

Max Operating Temperature

1,750℃

1,750℃

1,750 ° c

Building Amount (/ ㎥ )

2.94 Ton

2.94 Ton

2.94 Ton

 
Origin : Korea