Finex
The Finex process is a further development of the Corex - SR process. It does not require the preparation in sintering and pelletizing systems that is necessary in the classic blast furnace process . Instead, the fine ore is dried in a fluidized bed dryer. It then enters a multi-stage fluidized bed reactor , where it is reduced to D irect R educed I ron (DRI) using a reducing gas . The DRI is now becoming H ot C ompacted I ron(HRI) and then introduced into a melter gasifier, where it is melted into pig iron. The thermal energy required for smelting and metallurgical reactions is generated by gasifying coal with oxygen; the resulting reducing gas is used in the fluidized bed to reduce the ore. At the end of the process, pig iron and slag are tapped like a blast furnace . In addition, the Finex process produces gas with a high calorific value, which can be used for generating electrical energy and as heating gas. Through the direct use of coal and fine ore, the environmentally harmful coke production is reducedand fine ore sintering is saved.
See also
Individual evidence
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