Slag Ball

Slag Ball Introduction:

Slag Ball is made of light burnt magnesia, magnesite powders and shaped through presses. Skimming Ball / Skimming Cone are mainly used for the slag splashing, which can effectively improve the performance of Converter. During the tapping process, the molten steel level will decrease gradually. When it reaches a critical value, swirls will emerge in the upper area of tapping hole and draw the slag into the ladles. When the slag limiting ball is put into swirls, the ball will be lay in the upper area of tapping hole, thus the slag can be prevented from flowing into the ladle. The molten steel will flow out from the gaps between the limiting balls and tapping holes, so as to decrease total flowing slag amount.

The density of the slag ball is between molten steel and slag, and it is put into the furnace near the tap hole near the end of tapping. With the decrease of the liquid level of molten steel, the slag ball sinks to block the tap hole, so as to prevent the slag from entering the ladle. The reasonable density of slag ball is 4.2 ~ 4.59/cm3. The slag retaining ball has a spherical structure, and its center is made of cast iron block, raw iron chip pressing block or small waste steel billet, and its exterior is covered with refractory clay. High alumina refractory concrete or magnesia refractory clay with high alumina refractory concrete or refractory brick powder as admixture can be used. The diameter of the slag ball should be slightly larger than the diameter of the tapping hole to play the role of slag blocking. Slag-blocking balls are usually put into use between 2/3 and 3/4 of the steel output, and the hit rate of slag-blocking is high. The slag is too sticky, which affects the slag blocking effect. The slag viscosity is high, so the slag blocking ball can be put in early to improve the hit rate of slag blocking.

Slag Ball Advantages:

1.high strength

2.high throwing accuracy

3.slag control efficiency