Der RecoDust-Prozess – Behandlung von zinkhaltigen Stahlwerksstäuben und weiteren Nebenprodukten aus integrierten Hüttenwerken

Reiter, Wolfgang; Lasser, Marlene; Rieger, Johannes; Raupenstrauch, Harald; Tappeiner, Tamara

doi:10.1007/s00501-020-00996-x

Berg Huettenmaenn Monatsh

2020

DOI: 10.1007/s00501-020-00996-x

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Der RecoDust-Prozess – Behandlung von zinkhaltigen Stahlwerksstäuben und weiteren Nebenprodukten aus integrierten Hüttenwerken

Wolfgang Reiter¹,

Marlene Lasser

Johannes Rieger³

et al.

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Cited by 2 publications

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Residue Valorization in the Iron and Steel Industries: Sustainable Solutions for a Cleaner and More Competitive Future Europe

Rieger¹,

Colla

Matino

et al. 2021

Metals

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The steel industry is an important engine for sustainable growth, added value, and high-quality employment within the European Union. It is committed to reducing its CO2 emissions due to production by up to 50% by 2030 compared to 1990′s level by developing and upscaling the technologies required to contribute to European initiatives, such as the Circular Economy Action Plan (CEAP) and the European Green Deal (EGD). The Clean Steel Partnership (CSP, a public–private partnership), which is led by the European Steel Association (EUROFER) and the European Steel Technology Platform (ESTEP), defined technological CO2 mitigation pathways comprising carbon direct avoidance (CDA), smart carbon usage SCU), and a circular economy (CE). CE approaches ensure competitiveness through increased resource efficiency and sustainability and consist of different issues, such as the valorization of steelmaking residues (dusts, slags, sludge) for internal recycling in the steelmaking process, enhanced steel recycling (scrap use), the use of secondary carbon carriers from non-steel sectors as a reducing agent and energy source in the steelmaking process chain, and CE business models (supply chain analyses). The current paper gives an overview of different technological CE approaches as obtained in a dedicated workshop called “Resi4Future—Residue valorization in iron and steel industry: sustainable solutions for a cleaner and more competitive future Europe” that was organized by ESTEP to focus on future challenges toward the final goal of industrial deployment.

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Residue Valorization in the Iron and Steel Industries: Sustainable Solutions for a Cleaner and More Competitive Future Europe

Rieger¹,

Colla

Matino

et al. 2021

Metals

Self Cite

View full text Add to dashboard Cite

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Recovery of Valuable Materials with the RecoDust Process

Reiter¹,

Rieger²,

Raupenstrauch

et al. 2023

Metals

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The RecoDust process is a pyrometallurgical process for treating steel mill dusts that cannot be recycled internally due to their zinc content, providing numerous benefits compared to conventional processes. State-of-the-art processes often face the problem of recycling only zinc, but not iron, which is frequently landfilled and withdrawn from a closed loop. Furthermore, these processes are also often limited to a specific zinc content in the feedstock. Within the described RecoDust smelting campaigns, basic oxygen converter dust with about 15 wt.% zinc was taken as feedstock. After high-temperature treatment of the input material, the RecoDust slag (RDS) has a zinc content of 0.4 wt.% and the crude zinc oxide (CZO) has a ZnO content of up to 80 wt.%. The RDS is suitable for use in the sinter plant as a secondary raw material. To investigate the influence of adding RDS to a common sintering mixture, sintering pot tests followed by RDI (reduction disintegration indices) tests were carried out. The influence of the admixture of RDS on the RDI values is not detectable. The CZO was fed into a soda extraction system for halogen removal. The halogen removal of this two-stage leaching was highly efficient with over 90% for chlorine.

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Der RecoDust-Prozess – Behandlung von zinkhaltigen Stahlwerksstäuben und weiteren Nebenprodukten aus integrierten Hüttenwerken

Cited by 2 publications

References 2 publications

Residue Valorization in the Iron and Steel Industries: Sustainable Solutions for a Cleaner and More Competitive Future Europe

Residue Valorization in the Iron and Steel Industries: Sustainable Solutions for a Cleaner and More Competitive Future Europe

Recovery of Valuable Materials with the RecoDust Process

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