目前世界上最大的平炉容量是500到600吨。为了避免庞大的注锭吊车和钢水(?)所引起的厂房及设备制造和浇注操作上的一系列严重困难,在这种极大吨位的平炉上,都采用了双槽出钢。在太原钢铁公司创造了平炉三槽出钢的重要先进经验以后,鞍钢已经成功地将这个方法推广到全国最大的平炉上,取得良好成绩。(图1)这座平炉设计容量是500吨,使用三个200吨的钢水缶进行三槽出钢,扩装至600吨。在这座平炉上,除了将衬砖适当减薄,将门坎及炉顶相应提高,从而使炉膛扩大到600吨以外,其他部份与500吨炉相同。炉后钢水缶座由两个增加到三个,同时,将炉后铁 The world’s largest hearth capacity is 500 to 600 tons. In order to avoid a series of serious difficulties in the manufacture and pouring operation of the plant and equipment caused by the huge injection-spindle cranes and molten steel (?), Double-groove tapping was adopted in this extremely large tonnage open hearth furnace. After Taiyuan Iron & Steel Company created the important advanced experience of open-hearth three-slot tapping, Ansteel has succeeded in extending this method to the largest open hearth furnace in the country and achieved good results. (Fig. 1) The hearth has a design capacity of 500 tons and uses three 200-tonne steel 缶 for three-slot tapping and expansion to 600 tons. In this open hearth, in addition to the appropriate thinning of the lining bricks, the threshold and the roof increased accordingly, so that the expansion of the furnace to 600 tons, the other parts of the same with 500 tons furnace. After the molten steel mantle seat increased from two to three, at the same time, the furnace after the iron