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1982年6月在施罗曼-西马克公司的克劳茨塔尔-布什钢铁厂(SMS)12吨直流电弧炉原型通过几个试验炉次,基本上证实了操作的适用性以后已投入试生产。这是世界上第一座实际用于炼钢生产的直流电弧炉。先前所建造的这种炉子只是周期性地作为研究工作用的试验设备。
In June 1982, a prototype of the Schroedermann-SMS production line of the Schluman-Schmidt mill passed several test furnaces, basically confirming that the operational suitability had been put into trial production . This is the world’s first DC electric arc furnace actually used in steelmaking. The furnaces built earlier have only been periodically used as experimental equipment for research work.