Title

IMPLEMENTATION OF PYREJET™ TECHNOLOGY IN ELECTRIC ARC FURNACES AT SIDERURGICA BARRA MANSA

IMPLEMENTATION OF PYREJET™ TECHNOLOGY IN ELECTRIC ARC FURNACES AT SIDERURGICA BARRA MANSA

Authorship

MORAES, GERSON CRUZ DE; FILHO, WALDIR DO AMARAL; GRANT, MICHAEL; SHIFRIN, VAL; POPENOV, ALEX; DELABROY, OLIVIER; OLIVEIRA, FRANCISCO

MORAES, GERSON CRUZ DE

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FILHO, WALDIR DO AMARAL

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GRANT, MICHAEL

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SHIFRIN, VAL

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POPENOV, ALEX

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DELABROY, OLIVIER

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OLIVEIRA, FRANCISCO

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DOI

10.5151/2594-5300-C01773

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Abstract

Siderurgica Barra Mansa (SBM) is a Brazilian long product steel producer located in the state of Rio de Janeiro. The melt shop operates two 50 t EAFs and one billet continuous caster. A drastic reduction in electrical consumption was required due to severe energy crises that occurred in Brazil in 2001. SBM made a tremendous effort to reduce electrical consumption to under 400 kWh/t in the beginning of 2001. In August 2001 SBM implemented PYREJET™ technology from Air Liquide on both furnaces in an attempt to further reduce conversion cost and to increase productivity. Within one month after the implementation the following results were achieved: • 20% reduction in Electrical Energy consumption • 20% reduction in Electrode consumption • 15% reduction in Power On time • Around 0,5% increase in Metallic yield • Over 30% decrease in Refractory consumption PYREJET™ is multi-function injector located on the sidewall of the EAF for completely automated injection of fuel, oxygen and carbon for the EAF process. This technology was pioneered by ACI in 1994-1995. Currently almost 20 EAFs worldwide are equipped with PYREJET™ systems.

Siderurgica Barra Mansa (SBM) is a Brazilian long product steel producer located in the state of Rio de Janeiro. The melt shop operates two 50 t EAFs and one billet continuous caster. A drastic reduction in electrical consumption was required due to severe energy crises that occurred in Brazil in 2001. SBM made a tremendous effort to reduce electrical consumption to under 400 kWh/t in the beginning of 2001. In August 2001 SBM implemented PYREJET™ technology from Air Liquide on both furnaces in an attempt to further reduce conversion cost and to increase productivity. Within one month after the implementation the following results were achieved: • 20% reduction in Electrical Energy consumption • 20% reduction in Electrode consumption • 15% reduction in Power On time • Around 0,5% increase in Metallic yield • Over 30% decrease in Refractory consumption PYREJET™ is multi-function injector located on the sidewall of the EAF for completely automated injection of fuel, oxygen and carbon for the EAF process. This technology was pioneered by ACI in 1994-1995. Currently almost 20 EAFs worldwide are equipped with PYREJET™ systems.

Keywords

PYREJET, ELECTRIC ARC FURNACE, ENERGY CONSUMPTION, PRODUCTIVITY, STEELMAKING

PYREJET, ELECTRIC ARC FURNACE, ENERGY CONSUMPTION, PRODUCTIVITY, STEELMAKING