KaiFeng GaoDa New Type Refractory Material Factory
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(86)-189 3782 2293
Contact:A Lei
TEL:(86)-18937822293
Fax:(86)-371-2392 2186
Email:suwolf@faxmail.com
Add:West of XiaoWangTun ZhenBian Road KaiFeng City,HeNanProvince,China
Zip:475000
 
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Refractory for tundish con-casting

Product Description:

 

Physical & chemical indexes for tundish gate valve:

Quality
High Alumina
Name
GD-D253
GD-D262
GD-D270
Chemical analysis(%) Al2O3
53
62
70
SiO2
41
33
27
CaO
1.3
0.5
0.8
Liner change(%)1500° C×3h
+0.8
+0.72
+0.48
Bulk Density(g/cm3) 110° C×24h
2.45
2.38
2.64
1500° C×3h
2.35
2.28
2.60
Crushing strength(MPa) 110° C×24h
8.0
4.4
6.4
1500° C×3h
15.4
10.3
17.7
Modulus of rupture at elevated temp(MPa)1400° C
2.5
3.4
4.9
Features
Building Block
use
Gate valve

 

 

Physical & chemical indexes of tundish castable for feteling:
Quality
High Alumina
Name
GD-A53
GD-A62
GD-A70
Chemical analysis(%) Al2O3
53
62
70
SiO2
41
33
27
Liner change(%)( )° C×3h
(1500)+0.20
(1500)+0.59
+0.30
Bulk Density(g/cm3) 110° C×24h
2.50
2.70
2.70
( )° C×3h
(1500)2.40
(1500)2.67
(1500)2.65
Bending strength(MPa) 110° C×24h
8.8
7.4
5.0
1500° C×3h
(1500)19.6
(1500)17.7
(1500)15.6
Modulus of rupture at elevated temp(MPa)1400° C
2.5
3.4
4.9
Features
casting
use
Castable for ladle lid

Physical & chemical indexes for tundish coasting:
Quality Magnesia
Name GD-2T84 GD-2T85 GD-2T87 GD-2T80 GD-2T87B GD-2T93
Chemical analysis(%) Al2O3 1 1 2 10 - -
SiO2 2 5 5 6 5 2
MgO 84 85 87 80 87 93
Grain size mm(%) +0.5mm 41 40 30 31 10 40
-0.074 40 22 35 50 50 2
Bulk Density(g/cm3) 110° C×24h 1.97 1.72 1.80 1.32 1.80 1.90
1500° C×3h 2.02 1.79 2.00 1.40 1.90 2.00
Bending strength(MPa) 110° C×24h 1.97 1.72 1.80 1.32 1.80 1.90
1500° C×3h 2.02 1.79 2.00 1.40 1.90 2.00
Modulus of rupture at elevated temp(MPa) 110° C×24h 1.97 1.72 1.80 1.32 1.80 1.90
1500° C×3h 2.02 1.79 2.00 1.40 1.90 2.00
Features Atmospheric temperature~250° C Atmospheric temperature~150° C Atmospheric temperature~150° C Atmospheric temperature~100° C - -
use Dry gunning Wet gunning Smear with hands Not dry
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