Title

EAF ENERGY OPTIMIZATION AT NUCOR YAMATO STEEL

EAF ENERGY OPTIMIZATION AT NUCOR YAMATO STEEL

Authorship

Pujadas, Andrè; Jackson, Steve; Iacuzzi, Massimo

Pujadas, Andrè

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Jackson, Steve

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Iacuzzi, Massimo

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DOI

10.5151/2594-5300-2004-9264-0004

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Abstract

This document will outline and focus on the use of chemical energy in the Electric Arc Furnaces at Nucor Yamato Steel Arkansas (U.S.A.). The paper will describe some of the technologies adopted, such as the use of MODULE oxygen and carbon injection technology, foamy slag practices and post combustion. A mass and energy balance is presented, an overview of these results will also be presented and discussed. Nucor Yamato Steel, located in Blytheville (Arkansas-USA), has an annual capacity of 2,800,500 stons. The annual capacity includes the production of structural steel (hot rolled wide flange structural steel shapes, standard channel and miscellaneous channel shapes, angle, car building shapes, H-piling and hot rolled steel sheet piling sections). The meltshop operates two 150 ton (charge tons) AC EAFs, the nominal diameter of the furnace is 22ft (6700mm), melting transformer rated 90 MVA each having an average active power input of 78 MW.

This document will outline and focus on the use of chemical energy in the Electric Arc Furnaces at Nucor Yamato Steel Arkansas (U.S.A.). The paper will describe some of the technologies adopted, such as the use of MODULE oxygen and carbon injection technology, foamy slag practices and post combustion. A mass and energy balance is presented, an overview of these results will also be presented and discussed. Nucor Yamato Steel, located in Blytheville (Arkansas-USA), has an annual capacity of 2,800,500 stons. The annual capacity includes the production of structural steel (hot rolled wide flange structural steel shapes, standard channel and miscellaneous channel shapes, angle, car building shapes, H-piling and hot rolled steel sheet piling sections). The meltshop operates two 150 ton (charge tons) AC EAFs, the nominal diameter of the furnace is 22ft (6700mm), melting transformer rated 90 MVA each having an average active power input of 78 MW.

Keywords

oxygen and carbon injection technology; chemical energy; energy and mass balance;

oxygen and carbon injection technology; chemical energy; energy and mass balance;