【摘要】 有害杂质在废钢循环使用过程中的富集严重地限制了废钢资源在纯净钢生产领域内的有效利用、迄今从钢液中分别脱除残余元素的各种尝试成本高、效率低，且实现工业化困难．针对此现状本文提出渣化还原工艺流程，用氧化法产生富ＦｅＯ熔渣作为后续的氢还原工序中的纯净原料，这样就有可能用低级混杂废钢生产出满足残余元素总量控制要求的特殊钢种同时，Ｃｕ等杂质在残液中的富集和浓缩也有利于降低其提取难度和回收成本更多还原

【Abstract】 The enrichment of harmful impurities during the recycle of scrap limits the effective use of scrap source in clean steel production. Attempts so far to separate residual elements one by one from steel bath seems expensive, low efficient and difficult for industrial application. This paper put forward consequently the "slagging-reduction process", in which melting FeO will be obtained with oxidizing method as pure raw material for following hydrogen-based reduction procedure. This will be a way to use low-class mixed scrap in production of special steel, whose total content of residual elements is strictly restrained. Moreover, the enrichment and concentration of impurities like Cu can make their extraction and recycle easier and cheaper.更多还原