ISSN 2594-357X
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Abstract
The Corex process is beside the Finex technology the only economic and ecologic industrially realized alternative to the blast furnace route for the production of hot metal. Based on the nature of the Corex process using pure oxygen for the smelting process export gas with a high calorific value is produced which can be used for various purposes. Existing Corex plants at Saldanha, JSW, Baosteel and Essar have already implemented different applications for export gas utilization to fully utilize the benefits of the Corex process for economic and efficient hot metal and steel production. Current trends in iron and steelmaking clearly show an increasing demand for utilizing the Corex export gas for the production of DRI. Integrated plant concepts based on a Corex/Midrex DR plant combination offer solutions for future challenges of the iron- and steelmaking industry, which include: economical hot metal and DRI production based on coal; low raw material costs, sustainable raw material availability; integrated energy solutions; and environmental friendly high grade steel production. A further aspect of the combination is the possibility to charge the hot metal from Corex and the DRI in hot condition from the Midrex plant to a Simetal EAF for highest efficient steel production. The new Simetal Fast DRI EAF especially developed for DRI charge to an EAF is maximizing the productivity due to minimized power-off times. Many references for the input of hot metal and hot/cold DRI reflecting the market demand for increased input of scrap substitutes are available.
The Corex process is beside the Finex technology the only economic and ecologic industrially realized alternative to the blast furnace route for the production of hot metal. Based on the nature of the Corex process using pure oxygen for the smelting process export gas with a high calorific value is produced which can be used for various purposes. Existing Corex plants at Saldanha, JSW, Baosteel and Essar have already implemented different applications for export gas utilization to fully utilize the benefits of the Corex process for economic and efficient hot metal and steel production. Current trends in iron and steelmaking clearly show an increasing demand for utilizing the Corex export gas for the production of DRI. Integrated plant concepts based on a Corex/Midrex DR plant combination offer solutions for future challenges of the iron- and steelmaking industry, which include: economical hot metal and DRI production based on coal; low raw material costs, sustainable raw material availability; integrated energy solutions; and environmental friendly high grade steel production. A further aspect of the combination is the possibility to charge the hot metal from Corex and the DRI in hot condition from the Midrex plant to a Simetal EAF for highest efficient steel production. The new Simetal Fast DRI EAF especially developed for DRI charge to an EAF is maximizing the productivity due to minimized power-off times. Many references for the input of hot metal and hot/cold DRI reflecting the market demand for increased input of scrap substitutes are available.
Keywords
Corex; Midrex; Simetal EAF; Export gas utilization; Hot metal; DRI.
Corex; Midrex; Simetal EAF; Export gas utilization; Hot metal; DRI.
How to refer
Böhm, Christian;
Fritsch, Gerhard;
Sterrer, Wolfgang;
Wurm, Johann.
COREX® + MIDREX AN IDEAL CONCEPT FOR ECONOMIC AND ENVIRONMENTAL FRIENDLY STEEL PRODUCTION
,
p. 229-241.
In: 43º Seminário de Redução de Minério de Ferro e Matérias-Primas e o 14º Simpósio Brasileiro de Minério de Ferro,
São Paulo,
2013.
ISSN: 2594-357X
, DOI 10.5151/2594-357X-23809
