Influence of calcium-magnesium filler in double-layer dam in tundish on inclusions in molten steel
Double-layer dam with filler is a new type of the flow control device in tundish.Selecting appropriate filler can remove the inclusions in molten steel preferably.The calcium-magnesium refractory was used as the filler of a double-layer dam,and the effect of w (CaO) of the calciummagnesium refractory on removal of inclusions in molten steel was studied.The results showed that the inclusions per unit area in the steel sample was reduced by 12.92 ％ when the calcium-magnesium refractory with 20 ％ w (CaO) was filled in.The inclusions per unit area in the steel sample was reduced by 25.84 ％ when the calcium-magnesium refractory with 30 ％ w(CaO) was filled in.It could be concluded that the effectiveness of the inclusion removal in the tundish could be strengthened when the calcium-magnesium refractory was used as the filler of the double-layer dam.
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