he slide gate way of blocking slag has prominent advantages about reducing phosphorus, improve the alloy yield, reducing the inclusion in steel, improving cleanness of molten steel, reducing the ladle slag viscosity and prolonging the service life of the ladle. The nozzle control the flow of molten steel in an efficient manner and improve the effect of slag.
The nozzle pressed by high tonnage pressing machine and treated with medium or high temperature. It can be divided into MgO-C based, Al2O3-C based, Al2O3-ZrO2 based according to different raw materials.
Item
|
Technical Quality Index
|
A
|
B
|
Chemical Composition
|
Al2O3 %
|
≥85
|
≥80
|
C %
|
3~6
|
3~6
|
Physical Properties
|
Porosity
|
≤12
|
≤14
|
Density
|
≥2.9
|
≥2.85
|
Cold Crushing Strength
|
≥100
|
≥90
|