1985年全世界LD转炉的总年产能力为5.38亿吨,三年来基本上没有变化。这一期间许多工业化国家关停(不是更换)了一些LD转炉,但后进国家增加了一些转炉容量。工艺的改进主要是靠底吹、搅拌、冒气泡来提高钢的质量和产量。有的是通过喷嘴或多孔砖、刻槽砖喷入氧气或其他气体,有 The total annual capacity of LD converters in the world was 538 million tons in 1985, basically unchanged for three years. Many industrialized countries shut down (not replace) some LD converters during this period, but later-stage countries added some converter capacity. Improve the process is mainly by blowing the bottom, stirring, bubble to improve the quality and output of steel. Some are through the nozzle or perforated brick, notch brick spray into oxygen or other gases, there