An integrated coal injection system for blast furnace at ILVA Taranto

Conference · Fri Jan 01 04:00:00 EST 1993 · Proceedings, Ironmaking Conference; (United States)

OSTI ID:6185652

Salvatore, E; Calcagni, M; Capriulo, R ^[1]; Eichinger, F; Rafi, M

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1. ILVA, Taranto (Italy)

ILVA decided to introduce PCI (Pulverized Coal Injection) to reduce the cost of hot metal by using non-coking coal, reducing purchased coke and closing down of aged coke batteries. Also by producing less coke, more time would be available for repair and rebuilding of existing batteries. Coal injection started at Taranto blast furnaces Nos. 4, 2, 5 and 1 in September, October, November, 1991 and January, 1992 respectively. A central grinding and injection station supplies coal to the blast furnaces. The hot metal capacity of these furnaces amounts to 28,000 t per day altogether. With a specific injection rate of 200 kg/thm for each blast furnace, in total 234 t of fine coal per hour is ground and injected. Plant concept is based on the latest development in pneumatic conveying and injection technique developed by Kst Stahltechnik. PCI project was an important contribution to ILVA philosophy of green production of iron making aiming at replacing 35% of coke production by PCI. Energy saving also leads to less dependence on foreign energy market and better energy balance in the plant. Economic evaluation study revealed that injection level of 150 kg per thm will result in reduction of total cost of fuel by 16% and that of hot metal by 5%.

• OSTI ID: 6185652
• Report Number(s): CONF-9303222--
• Conference Information: Journal Name: Proceedings, Ironmaking Conference; (United States) Journal Volume: 52
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010500* -- Coal
Lignite
& Peat-- Products & By-Products
BLAST FURNACES
CARBONACEOUS MATERIALS
COAL
COKE
DATA
DESIGN
ENERGY CONSERVATION
ENERGY SOURCES
FOSSIL FUELS
FUEL FEEDING SYSTEMS
FUEL SYSTEMS
FUELS
FURNACES
INFORMATION
MATERIAL SUBSTITUTION
MATERIALS
NUMERICAL DATA
PERFORMANCE
PNEUMATIC TRANSPORT
PRODUCTIVITY
PULVERIZED FUELS
TRANSPORT