The steel scrap index (S), as the criterion for defining the degree of availability of steel scrap for steel industry, is shortly defined.
说明了废钢指数（S）是衡量钢铁工业废钢资源充足程度的判据。
Based on the technical and economic index of EAF steel making and quality of steel, the characteristics of DRI and other scrap substitutes are reviewed in this paper.
本文从电炉炼钢的技术经济指标和钢质量等方面，论述了直接还原铁及其它金属炉料的使用特点。
Based on the technical and economic index of EAF steel making and quality of steel, the characteristics of DRI and other scrap substitutes are reviewed in this paper.
本文从电炉炼钢的技术经济指标和钢质量等方面，论述了直接还原铁及其它金属炉料的使用特点。
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