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文章指出,电弧炉炉顶中插电极用的孔一般比电极直径大30—50毫米,因此炉内气体就可以通过电极周围的空隙逸出,使热损失增加,
The article points out that the hole in the top of the electric arc furnace plug electrode generally 30-50 mm larger than the electrode diameter, so the furnace gas can escape through the gap around the electrode, the heat loss increases,