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一、前言自1865年平炉炼钢法问世以来,已经历120年了。这期间,平炉炼钢法经过发生、发展的过程,并曾达到兴旺时期,1955年平炉钢占全世界总产钢量的81%。但是,自20世纪50年代出现氧气顶吹转炉炼钢法以后,平炉炼钢逐渐走向衰退,到1983年,平炉钢仅占世界总产钢量的21.0%,而氧气转炉钢却上升到55.2%。平炉炼钢法所以走下坡路,主要原因是它同转炉炼钢相比,显出生产率低,投
I. Introduction Since the advent of open hearth steelmaking in 1865, it has been 120 years. During this period, open hearth steelmaking process took place, the process of development, and has reached a prosperous period, 1955 open hearth steel accounted for 81% of the world total steel production. However, after the oxygen top-blown converter steelmaking method emerged in the 1950s, open hearth steelmaking gradually declined. By 1983, open hearth steel accounted for only 21.0% of the world’s total steel output, while that of oxygen converter steel rose to 55.2% . Flat hearth steelmaking so downhill, the main reason is that it compared with the converter steelmaking, showing the low productivity, investment