High Grade Composite Silica Ramming Mass

Properey

FGGD-1

FGGD-2

FGGD-2A

FGGD-3

FGGD-4

FGGD-5

Chemical composition(%)

SiO2≥

90

91

91

92

92

92

Al2O3≤

0.5

0.5

0.5

0.5

0.5

0.55

SiC≥

7

6

5

5

4

4

Cold crushing strength(MPa)

1250℃×3h
After firing at

15

15

12

12

10

10

Apparent porosity after burnt(%)

1250℃×3h
After firing at

26

26

25

24

24

24

Linear changing after burnt(%)

1250℃×3h
After firing at

-0.5～+0.7

-0.3～+0.9

Bulk density(g/cm³)

1250℃×3h
After firing at

2.3

2.25

2.25

2.2

2.2

2.2

Refractoriness≥(℃）

1750

1700

1700

1750

1750

1750

Max. grain size of aggregate(mm)

5

4.5

4.5

4.2

4.2

4.2

Amount for construction(kg/m³)

2450

2450

2450

2450

2400

2400

Method of construction

Jolt or  ramming

Application

Melting furnace for nonferrous metals be the same with  150KW  hereinbefore inductance furnace

Characteristic

Cost down Heat preservationEconomy electricity Nostickslag 
Fast drying Chemical bonded Corrosion resistance 
Interfusion resistance