Title

ONSITE RESIDUES RECYCLING AND EFFICIENCY IN A DR- EAF BASED STEEL PLANT: ANALYSIS BY A VALUE-IN-USE MODELS

ONSITE RESIDUES RECYCLING AND EFFICIENCY IN A DR- EAF BASED STEEL PLANT: ANALYSIS BY A VALUE-IN-USE MODELS

Authorship

Araujo, Denilson Rodrigues de; Júnior, José Henrique Noldin; D’Abreu, José Carlos; Aragão, Ricardo Vescovi; Sampaio, Ronaldo Santos

Araujo, Denilson Rodrigues de

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Júnior, José Henrique Noldin

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D’Abreu, José Carlos

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Aragão, Ricardo Vescovi

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Sampaio, Ronaldo Santos

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DOI

10.5151/2594-5300-0005

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Abstract

The introduction of a new ironmaking technology (TECNORED) for onsite recovery and recycling of the steelmaking residues generated at a typical DR (direct reduction) integrated mini-mill has been simulated by “Value In Use” models, followed by an assessment of the pros and cons of this approach. The idea in this preliminary study was to optimize overall production cost, ensure a stable supply of high-quality and low cost virgin iron units to the melt-shop and avoid any residues disposal. To achieve these goals, a Tecnored plant has been considered “over-the-fence” the steel plant, receiving all iron and carbon enriched residues from both the DR plant and the melt-shop operations, then supplying hot metal to be used as part of the metallic charge input of the EAFs. Different scenarios have been envisaged.

The introduction of a new ironmaking technology (TECNORED) for onsite recovery and recycling of the steelmaking residues generated at a typical DR (direct reduction) integrated mini-mill has been simulated by “Value In Use” models, followed by an assessment of the pros and cons of this approach. The idea in this preliminary study was to optimize overall production cost, ensure a stable supply of high-quality and low cost virgin iron units to the melt-shop and avoid any residues disposal. To achieve these goals, a Tecnored plant has been considered “over-the-fence” the steel plant, receiving all iron and carbon enriched residues from both the DR plant and the melt-shop operations, then supplying hot metal to be used as part of the metallic charge input of the EAFs. Different scenarios have been envisaged.

Keywords

DRI, EAF, tecnored

DRI, EAF, tecnored