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  Active Alumina Series
  Inert Fillers, Various Alumina Spheres
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Inert Filler and Various Alumina Spheres
Type
Al2O3
Content %
SiO2
Content %
Fe2O3
Content %
 Volume Density kg/l
Refract-
oriness
Refracto-
riness
under Load 0.2Mpa
Wet Porosity %
compre-
ssion strength Mpa
Size Φ/mm
J-30
≥30
65
<0.8
≥1.4
1500
1450
<25
10
6
J-45
≥45
35-40
<0.7
≥1.4
1550
1500
<23
10
6
J-75
≥75
18-20
0.3
≥1.8
1650
1600
22
20
18
J-85
≥85
10-13
0.3
≥1.8
1700
1650
21
20
20
J-95
≥95
3
0.3
≥2.8
1790
1700
20
30
25
J-99
≥99
<0.2
0.3
≥3.0
1800
1790
19
50
28

α-1Hole

75
20-25
0.4
1.0-1.5
1650
1600
20
16
18

α-3Hole
75
20-25
0.4
1.0-1.4
1600
1550
21
15
18

α-4Hole
75
20-25
0.4
1.0-1.3
1600
1550
21
15
18

α-5Hole
85
12-15
0.4
1.0-1.1
1600
1550
20
15
20

α-6Hole
85
12-15
0.3
0.9-1.0
1600
1500
20
14
20

α-7Hole
90
5-10
0.3
0.8-0.9
1600
1500
20.5
12
19

Note:
Hermetically packed in paper plates (or iron)drums with net weight of 50¡À0.25kg per drum.
Product sizes range within Φ 1-100mm (sphere);special shapes of (column, wheel , circle, etc.)can be designed and manufactured for user demand.

 
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