Coke production capacity within Arcelor is not self sufficient for the total hot metal production. Reduction of coke consumption at the blast furnaces, thanks to high coal injection, becomes a major stake for many plants. For this reason, pulverized coal injection was started up in 2004 at the German Arcelor plants, namely Bremen BF2 and Eisenhuttenstadt BF5, with a ramp up to over 180 kg/thm in less then one year. A Working Group, gathering all the plants as well as R&D, defined the blast furnace operating conditions leading to stable and efficient operation at high coal rate. Specific actions have already been implemented or are under progress. At Florange BF3 PCI trials at 220 kg/thm were successful. At Dunkerque BF4 and Gent BFA and B, the PCI rate exceeds regularly 210 kg/thm on monthly basis. This paper describes some aspects of the learning curve of PCI at the Arcelor blast furnaces.
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