Organic binders for iron ore pelletization and steelmaking

Book · Fri Dec 01 04:00:00 EST 1995

OSTI ID:129112

Karkoska, D; Sankey, E ^[1]; Anderson, R ^[2]

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1. Allied Colloids, Suffolk, VA (United States)
2. Eveleth Mines, MN (United States)

Historically, bentonite has been used in the agglomeration process in North American iron ore plants. In 1986, Eveleth Mines replaced bentonite with Peridur, a carboxy methyl cellulose organic binder used in conjunction with 1% limestone. Since May of 1993, Allied Colloids` Alcotac FE8 has been used by Eveleth as the replacement for bentonite. This paper discusses the performance benefits obtained when bentonite was replaced with an organic binder. These totally synthetic binders are used in conjunction with limestone. The benefits of organic binders are: improved metallurgical parameters of the fired pellet, especially the reducibility, which results in more efficient use of gases in the blast furnace; reduced silica in the pellet, in the case of Eveleth Mines this was a reduction of 0.5%, a lower silica pellet reduces slag in the blast furnace; increased production in both the agglomeration/induration and steelmaking processes; and a decrease in coke consumption.

• OSTI ID: 129112
• Report Number(s): CONF-9504182--; ISBN 0-932897-99-1
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
BINDERS
BLAST FURNACES
CHEMICAL COMPOSITION
COKE
ENERGY EFFICIENCY
EXPERIMENTAL DATA
FUEL CONSUMPTION
IRON ORES
MATERIAL SUBSTITUTION
METAL INDUSTRY
MOLECULAR STRUCTURE
PELLETIZING
PERFORMANCE
PRODUCTIVITY
SILICON OXIDES
SLAGS