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Slag-Stopping Ball and Dart

Slag stopping ball is used for slag control during steel tapping. During the taping operation, it is threw into the molten steel, flows to the taphole and keep the slag from running out, while molten steel flows unstopped through the gap between the ball and taphole into steel ladle. By doing so, the slag proportion in tapped steel is significantly reduced.
Slag stopping dart plays the similar role as slag stopping ball. It consists of body part, which has the similar chemical components as slag stopping ball, and stick part, whose main component is alumina. It is thrown into the molten steel by slag stopper device during tapping process. In comparison to ball, it is easier for dart to find its way to taphole.

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