在工农业生产一派大好形势下,铸钢生产发展很快,因而电炉炼钢主要材料之一的废钢供应紧张,研究少用废钢或不用废钢就成了发展铸钢生产的重要课题。经过无产阶级文化大革命战斗洗礼的我厂炼钢工人,路线斗争觉悟空前提高,1973年以来为了解决废钢不足的问题,成功地进行了铸铁屑炼钢的科学试验工作,并已在生产中应用。从1972年2月开始试验,到1974年末共使用了铸铁屑9500吨,占炼钢用料25％,与废钢 Under the favorable situation of industrial and agricultural production, the production of cast steel has been developing rapidly. As a result, the supply of scrap steel, one of the main materials of electric furnace steelmaking, has become an important issue for the development of steel production. After the battle of the proletarian cultural revolution, our factory steel-making workers realized an unprecedented increase in awareness of the route struggle. Since 1973, we have successfully conducted scientific experiments on iron scrap steelmaking and have applied it in production. From February 1972 test began, to the end of 1974 a total of 9,500 tons of cast iron filings, accounting for 25% of steel materials, and scrap