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2011-Sustainable Industrial Processing Summit
|Flogen Star OUTREACH
|2291-1227 (Metals and Materials Processing in a Clean Environment Series)
The environment surrounding the iron and steel industry has changed greatly. This paper describes the technology adopted by the Japanese iron and steel industry to cope with changes in global demand, changes in the availability of coal and iron ore resources, correspondence to the extension of plant life, and energy conservation. In addition, efforts to reduce the amount of exhausted CO2 due to environmental concerns are discussed. ・Recent Production Conditions and Changes in Production StructureThe Japanese production of crude steel and pig iron and the transition of the number and the inner volume of the blast furnaces are introduced.・Changes in the Availability of Coal and Iron Ore Resources and Progress of Pretreatment TechnologiesChanges in circumstances of iron ore resources and the process of iron ore pretreatment technologies are presented. ・Correspondence to the extension of plant lifeThe technology for extension of blast furnace life and extension of coke oven life are described.・More Efficient Operation and Operational StabilityDevelopment of hybrid bonded lump ore, CO2 reduction in the sintering process, start up of SCOPE21 type new coke oven battery, improvement of productive efficiency of blast furnace, and NG injection to blast furnace are introduced.・Conservation of Energy and CO2 Reduction TechnologyInnovative iron-making process and COURSE 50 is described.