Special ReportGlobal Competitiveness Through Hybridization of FINEX and CEM Processes
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Under the current oversupply and strengthenedenvironmental regulations, it is burdensome forsteelmakers to consider new investment in themaxi-mill (combination of a traditional BF andhot-rolling mill). In the mini-mill process, thereare some limitations in producing flat steel productsdue to harmful tramp elements in raw materialsof scrap and high electricity costs.
The needs of diversification of raw materials and flexibility ofprocess will accelerate the development of an alternative midi-mill ironmaking routeby hybridization of individually optimized steelmaking technologies. The recentconcept for hybridization is comprised of the FINEX and CEM technologies withparticular attention on a sustainable midi-mill process with high flexibility.The hybridization of the FINEX and CEM processes can provide high versatility bycombining the advantages of their technological characteristics.
Future process should adopt a process route that lies somewhere between themaxi-mill and mini-mills, that is, a midi-mill configuration with a production capacityover 2 MTPY and operational flexibility. FINEX has more flexibility in raw materials andoperations than the blast furnace route andhigher productivity than the EAF route. CEMcan achieve high throughput and meet product
requirements by converting from batch rollingto endless rolling. The midi-mill process routeof the FINEX and CEM combination can satisfythe needs to build a steel plant which is medium-scale, economically competitive, raw materialand operational flexibility, and eco-friendly.