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PCI technology for ArcelorMittal blast furnaces

Aug 29, 2008

ArcelorMittal has awarded the Paul Wurth Group with a series of orders for engineering plants for the injection of pulverized coal into blast furnaces.

At ArcelorMittal Dofasco in Hamilton, ON, Canada the PCI plant is under construction and will be commissioned step by step in spring and summer 2009. It will serve the blast furnaces No. 2, 3 and 4 which jointly produce above 10,000 metric tons of hot metal per day.

Further, new PCI plants will be installed at the production sites of Indiana Harbor West, East Chicago, IN, United States and Kryviy Rih, Dnipropetrovsk region, Ukraine. The installation in the USA will feed the furnaces No. 3 and 4 with a total daily iron production of almost 11,000 tons; at Kriviy Rih a complete plant will operate solely for blast furnace No. 9, which is the largest ironmaking unit of the country, with a daily hot metal output of 10,570 tons. Both the Indiana Harbor West and the Kryviy Rih PCI applications shall be operative in the 4th quarter of 2009.

All three projects feature a common technology, the static distribution of the pulverized coal over the hot blast tuyeres of the furnaces. Besides of the process and plant engineering, Paul Wurth will deliver key components to a large extent, particularly for the injection sub-plants, as well as software and automation systems for grinding-drying and injection.

The injection of pulverized coal as an additional reducing agent into blast furnace is the commonly recognized technology for intensifying the blast furnace ironmaking process whilst saving metallurgical coke, thus also reducing the environmental impact of the entire steelmaking via the coking / blast furnace route.

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