Electrorefining for copper tramp element removal from molten iron for green steelmaking

Paeng, Jaesuk; Judge, William D.; Azimi, Gisele

doi:10.1016/j.resconrec.2024.107654

Resources, Conservation and Recycling

2024

DOI: 10.1016/j.resconrec.2024.107654

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Electrorefining for copper tramp element removal from molten iron for green steelmaking

Jaesuk Paeng,

William D. Judge,

Gisele Azimi

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2024

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Technoeconomic Analysis of the Electrorefining Process for Copper and Carbon Removal from Scrap Steel for Green Steelmaking

Paeng,

Azimi

2024

Ind. Eng. Chem. Res.

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This study presents an economic assessment of integrating an electrorefining process into conventional electric arc furnace (EAF) mini-mills for the production of hot-rolled coil (HRC) steel with low copper (710 ppmw), sulfur (<10 ppmw), and carbon (197 ppmw) content from 100% scrap steel containing copper tramp elements (0.43 or 0.21 wt % Cu). The research extrapolates laboratory results to develop an industrial-scale combined process using electrorefining cells. Economic evaluations were performed through scenario, financial, and sensitivity analyses. The total levelized cost of HRC steel production from 100% scrap was estimated at $941.73 per tonne for 0.43 wt % Cu steel and $783.24 per tonne for 0.21 wt % Cu steel. The net profit (NPV) and internal rate of return (IRR) were low at the current HRC price, with figures of −$5.67 million and 4.9% for 0.43 wt % Cu steel, and $225 million and 9.8% for 0.21 wt % Cu steel. Sensitivity analysis shows that the NPV and IRR are significantly influenced by electrolyte material costs and scrap prices. The study highlights limitations of the proposed process and suggests future research directions to improve its technoeconomic viability.

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Technoeconomic Analysis of the Electrorefining Process for Copper and Carbon Removal from Scrap Steel for Green Steelmaking

Paeng,

Azimi

2024

Ind. Eng. Chem. Res.

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Electrorefining for copper tramp element removal from molten iron for green steelmaking

Cited by 1 publication

References 30 publications

Technoeconomic Analysis of the Electrorefining Process for Copper and Carbon Removal from Scrap Steel for Green Steelmaking

Technoeconomic Analysis of the Electrorefining Process for Copper and Carbon Removal from Scrap Steel for Green Steelmaking

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