ISSN 2594-5300
27º Seminário de Aciaria — Vol. 01 , num. 27 (1996)
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Abstract
The results of recent research, development and implementation activities for lower cost electric steelmaking are outlined for the following four areas: Water-Cooled Oxygen / Carbon Lance. The water-cooled O₂/C lances can be inserted into the furnace at the slag door side as well as into the furnace oriel. Advantages include improved kinetics through the unique lance tip design and minimum space requirements of the manipulator. DC ARC Technology. Extremely attractive furnace operating costs are the result of the low electrode consumption rate and the consequence of the installed Fin-Type Anode, which provides for an operational lifetime of more than 1500 heats. Furthermore, the quick-change anode replacement system maximizes furnace availability. K-ES Technology. Fossil fuel additions, oxygen injection and the maximum application of post-combustion increase furnace productivity and reduce electric energy consumption by more than 25%. Shaft Furnace Technology. Electric arc furnaces with an integrated scrap preheating shaft reduce investment costs and operational costs due to lower energy requirements, lower electrode consumption, higher metallic yield and minimized dust emissions. The usage of hot metal in modern electric steelmaking is also discussed, highlighting benefits such as lower energy consumption and smoother furnace operation compared to other scrap substitutes.
The results of recent research, development and implementation activities for lower cost electric steelmaking are outlined for the following four areas: Water-Cooled Oxygen / Carbon Lance. The water-cooled O₂/C lances can be inserted into the furnace at the slag door side as well as into the furnace oriel. Advantages include improved kinetics through the unique lance tip design and minimum space requirements of the manipulator. DC ARC Technology. Extremely attractive furnace operating costs are the result of the low electrode consumption rate and the consequence of the installed Fin-Type Anode, which provides for an operational lifetime of more than 1500 heats. Furthermore, the quick-change anode replacement system maximizes furnace availability. K-ES Technology. Fossil fuel additions, oxygen injection and the maximum application of post-combustion increase furnace productivity and reduce electric energy consumption by more than 25%. Shaft Furnace Technology. Electric arc furnaces with an integrated scrap preheating shaft reduce investment costs and operational costs due to lower energy requirements, lower electrode consumption, higher metallic yield and minimized dust emissions. The usage of hot metal in modern electric steelmaking is also discussed, highlighting benefits such as lower energy consumption and smoother furnace operation compared to other scrap substitutes.
Keywords
electric steelmaking, EAF, DC arc furnace, shaft furnace, hot metal
electric steelmaking, EAF, DC arc furnace, shaft furnace, hot metal
How to cite
Muller, Heinz; Hofer, Ludwig; Knapp, Hubert; Kaell, Norbert.
ADVANCED TECHNOLOGICAL SOLUTIONS IN ELECTRIC STEELMAKING,
p. 375-394.
In: 27º Seminário de Aciaria,
Porto Alegre, Brasil,
1996.
ISSN: 2594-5300, DOI 10.5151/2594-5300-27Aciaria-375-394
