Blast-furnace ironmaking -- Existing capital and continued improvements are a winning formula for a bright future

Book · Fri Dec 01 04:00:00 EST 1995

OSTI ID:129071

Oshnock, T W; Colinear, J A ^[1]

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1. U.S. Steel, Monroeville, PA (United States)

Throughout the years the blast-furnace process has been improved upon significantly. Increases to the hot-blast temperature, improvements to the physical, chemical, and metallurgical properties of coke and burden materials, the use of more fuel injectants, and improvements to the design of the furnace facilities have led to significant decreases in furnace coke rate, increases in productivity, and increases in furnace campaign life. As a result, many of the alternative cokeless reduction processes have not replaced blast-furnace hot-metal production in North America. In the future, these continued blast-furnace improvements will potentially result in coke rates decreasing to 400 pounds per net ton of hot metal (lb/NTHM) as more pulverized coal is injected. These improvements, coupled with the fact that existing blast furnaces and coke plants can be refurbished for approximately $110 per annual ton of hot metal [$100 per annual net ton of hot metal (NTHM)], will result in extending the life of the North American blast furnaces well into the twenty-first century.

• OSTI ID: 129071
• Report Number(s): CONF-9504182--; ISBN 0-932897-99-1
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
BITUMINOUS COAL
BLAST FURNACES
CAPITALIZED COST
COKE
COKING PLANTS
COMPILED DATA
CONSUMPTION RATES
COOLING SYSTEMS
FORECASTING
FUEL OILS
FUEL SUBSTITUTION
HISTORICAL ASPECTS
LINERS
METAL INDUSTRY
NATURAL GAS
OPTIMIZATION
OXYGEN ENRICHMENT
PRODUCTIVITY
SERVICE LIFE
SPECIFICATIONS
TAR
TECHNOLOGY UTILIZATION
WASTE MANAGEMENT