Coals for COREX{reg_sign}: New possibilities for the coal industry

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:43212

Heckman, H; Flickenschild, J ^[1]

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1. Deutsche Voest-Alpine Industrieanlagenbau GmbH, Duesseldorf (Germany)

The difficulty of bringing the emissions released from the coking plants into compliance with ever more stringent environmental regulations will lead to a reduction of coking plant capacity; therefore, there is an increased discrepancy between coke demand and coke supply. Hence, coke-based ironmaking is expected to become more expensive to operate. Coal producers worldwide have a strong interest in pursuing all possibilities to save and extend the utilization of coal in the steel industry. A proven possibility to this end is provided by the COREX{reg_sign} process. The commercially effective and environmentally friendly COREX{reg_sign} process is a smelting reduction process which produces hot metal by direct use of lump coal while the conventional blast furnace requires coke as a primary fuel. Coke can be made from metallurgical grade coking coals only. As the coking requirement of coals is not a prerequisite for the COREX{reg_sign} process, a wide spectrum of coals is made accessible for the ironmaking industry. As a by-product, the COREX{reg_sign} technology produces a very clean gas of medium calorific value which can be used with high efficiency in combined cycle power plants or as a reducing gas in downstream direct reduction plant. The paper describes the increasing importance of the COREX process in iron making, requirements for coals used in the process, by-products, and environmental benefits.

• OSTI ID: 43212
• Report Number(s): CONF-940930--
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
AIR POLLUTION ABATEMENT
CARBON DIOXIDE
CHARS
COAL
DEVOLATILIZATION
ENVIRONMENTAL IMPACTS
FUEL SUBSTITUTION
GASIFICATION
IN-SITU PROCESSING
INTERMEDIATE BTU GAS
IRON ORES
PRODUCTION
REDUCTION
SMELTING
SYNTHESIS GAS
TECHNOLOGY ASSESSMENT