美国共和钢铁公司芝加哥厂两座200吨氧气底吹转炉中的第一座已于1977年3月投产。该转炉的高度与直径之比约为1～1.2,炉容积为180米~3,采用水冷托圈,转炉倾动机构由四台电机驱动,还装有可升降的水冷烟气收集罩。造渣剂,如石灰粉和萤石,与氧气一道经过转炉底部的喷咀吹入炉内。在冶炼时吹入其他固体物料的装置设在装料跨附近。因此,不需要高架料仓和装置氧枪的 The first of two 200-ton oxygen bottom blown converters at the Chicago-based U.S. Republican steel plant was commissioned in March 1977. The converter height to diameter ratio of about 1 to 1.2, the furnace capacity of 180 meters to 3, the use of water-cooled ring, the converter tilting mechanism driven by the four electric motors, but also equipped with lifting water cooled flue gas collection hood. Slagging agents, such as lime powder and fluorite, are blown into the furnace together with oxygen through a nozzle at the bottom of the converter. Devices that blow in other solid materials during smelting are located near the charge. Therefore, no overhead silos and equipment lances are required