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Contact:A Lei
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Refractory for steel ladle

Product Description:

 

Physical-chemical characteristics of steel ladle:

Quality Alumina-spinel Alumina-magnesia Alumina
Name GD-AM93 GD-AM89 GD-AM88 GD-AM92 GD-AM68 GD-A84 GD-A81
Chemical analysis(%) Al2O3 93 89 88 92 68 84 81
MgO 3 7.5 10 5 19 - -
ZrO2 - - - - - - -
SiO2 - - 1 - 9 8 9
Bulk Density(g/cm3) 110° C×24h 2.96 2.92 3.10 3.05 2.72 2.70 2.43
1500° C×3h 2.89 2.80 2.88 2.83 2.52 3.00 2.59
Apparent poposity(%) 110° C×24h 17.6 17.2 17.2 16.0 22.9 23.4 28.1
1500° C×3h 22.5 23.1 22.7 24.3 27.0 18.6 29.9
Crushing strength(MPa) 110° C×24h 42.0 22.0 28 40 10.1 18.8 11.9
1500° C×3h 104.0 49.0 90 85 30.5 79.6 24.0
after-expansion after burnt(%)1500° C×3h +0.2 +0.11 +2.28 +1.78 +2.00 -2.0 -2.5
Application area Normal place on side face Side face Dumped side Side face Side face Permanent Permanent

 

 

Physical-chemical characteristics of steel ladle gunning:
Quality High Alumina Magnesia-Alumina Magnesia-calciam Magnesia
Name GD-GP77A GD-GP73M GD-GP70M GD-GP80M GD-GP92M
Chemical analysis(%) Al2O3 77 15 20 1 -
SiO2 15 9 6 3 4
ZrO2 - - - (CaO)13 -
MgO - 73 70 80 92
Bulk Density(g/cm3) 110° C×24h 2.75 2.35 2.25 2.07 2.40
1500° C×3h 2.72 2.29 2.43 2.22 2.32
Apparent poposity(%) 110° C×24h 20.8 24.0 28.6 28.4 26.5
1500° C×3h 22.2 27.5 29.0 31.3 30.2
Crushing strength(MPa) 110° C×24h 3.4 8.3 8.3 1.4 2.3
1500° C×3h 46.6 15.2 35.8 15.5 13.0
Liner change(%)1500° C×3h +0.12 +0.25  

-0.80

 

-0.93 -0.1
use Use for cold Use for Hot Use for Hot

Physical & chemical indexes of Refractory Mortars:
Quality
Magnesia
High Alumina
Name
MAGSET
ALVSET
BM-90
HMO
Refractoriness ° C(SK)
38
>37
Chemical analysis(%)
Al2O3
-
93
SiO2
-
6
ZrO2
-
-
MgO
89
-
Grain size(%)
+0.5mm
<2
0.5
-0.075mm
>65
55
Cold rupture bonding strength(MPa)
110° C×24h
1.5
1.9
1400° C×3h
-
20.0
1500° C×3h
17.7
-
main use
Special parpose for busicity
Special parpose for high alumina
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