一、绪言日本转炉炼钢法的发展,随着高炉的大型化、转炉容量趋向大型化,现在250～300吨的转炉正在出现。炼钢引进计算机操作,缩短了精炼时间,显著提高了生产率。铸锭方法进展到连续铸锭、特别是宽板坯的连铸发展到1.5～2.0米/分的快速浇注以及多炉连铸法等,使生产率得到了进一步的提高。在日本已有几个公司随着大型高炉、大 First, the introduction of the Japanese converter steelmaking law, with the large-scale blast furnace, converter capacity tends to large, and now 250-300 tons of converter is emerging. Steelmaking introduces computer operations, shortening the refining time and significantly increasing productivity. The ingot casting method has progressed to the continuous ingot casting, especially the continuous casting of wide slab to the rapid pouring of 1.5-2.0 m / min and the continuous casting of multiple furnaces, which further enhanced the productivity. Several companies in Japan have been with large blast furnaces