Slag Stopping Dart

In the converter steel-making processing, a lot of steel-slag in melting state is produced. Traditional slag-stopping technology uses the slag-stopping balls to control molten steel in tapping holes. Because the balls go adrift to the steel-tapping hole, meanwhile, as the slag is very viscous, slag-stopping ball can’t reach the hole. Or it can’t blank off the steel-tapping hole effectively while the liquid steel drains away.The efficiency of the slag-stopping ball is less than 70%. Using the slag-stopping plug in tapping process, its efficiency can be improved 98%, with slag thickness <=20mm. This new technology can significantly improve steel quality by reducing P and S, save energy by cutting down heat loss of steel fluid, and ameliorate operational safety as well.

Chemical specs

Name Type Plug body Position rod
MgO M-1??? 85% 88%
Al2O3 A-1??? 80% 85%
Physical specs
Type Density Anti-pressing strength Anti-heating strength
Plug body Position rod Plug body Position rod Plug body Position rod
M-1 2.6g/cm3 2.8g/cm3 110???×24h 40Mpa 40Mpa 1790??? 1790???
1500???×3h 60Mpa 50Mpa
A-1 2.6g/cm3 2.8g/cm3 110???×24h 50Mpa 50Mpa 1790??? 1790???
1500???×3h 70Mpa 60Mpa
Notes:
1. M-1 type is Magnesium based plug, A-1 is Aluminium based plug;
2. The plug’s size can be customized made by client’s requirements;
3. Steel length and size of the position rod will be made by client’s drawings.