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.
结果显示该渣使炼钢的产量、质量及其它技术经济指标均有明显提高。
It is shown that the slag exerted significant effects on the improvement in the productivity and quality as well as other technical and economic index of steelmaking.
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