RecoDust—An Efcient Way of Processing Steel Mill Dusts

Harald Raupenstrauch, Klaus Doschek-Held, Johannes Rieger, Reiter Wolfgang

Publikation: Beitrag in FachzeitschriftArtikelForschungBegutachtung

4 Zitate (Scopus)

Abstract

RecoDust is believed to be an efficient way of processing steel mill dusts to produce reusable secondary raw material resources. The rising costs of the steel production process and the increasing public attention towards environmental protection have caused steel plants worldwide to focus on emission-reduction processes and circular economy. As a reusable secondary raw material resource, the steel mill dust contains a high amount of iron and zinc. Nowadays, most of the steel mill dusts are processed under the Waelz-Process. However, this process is limited or impossible without additional dust treatment and can only be operated economically with zinc contents over 20 wt%. In the future, RecoDust in combination with dry slag granulation will become an efficient technique for processing lower zinc-containing materials of a steel mill. A challenging area in the field of RecoDust is the melting/reduction phase to separate volatile components and the slag treatment. A previous study was limited to the recovery of zinc. This paper compares the energy consumptions of the primary metal production to the recycling and of the RecoDust process to the Waelz-Process and outlines a new approach to RecoDust slag treatment.

OriginalspracheEnglisch
Seiten (von - bis)310-318
Seitenumfang9
FachzeitschriftJournal of Sustainable Metallurgy
Jahrgang5.2019
Ausgabenummer15 September
Frühes Online-Datum5 Apr. 2019
DOIs
PublikationsstatusVeröffentlicht - 5 Apr. 2019

Bibliographische Notiz

Funding Information:
Open access funding provided by Montanuniversitaet Leoben. The authors gratefully acknowledge the funding support of, K1-MET GmbH, the metallurgical competence center. The research program of the K1-MET competence center is supported by COMET (Competence Center for Excellent Technologies), the Austrian program for competence centers. COMET is funded by the Federal Ministry for Transport, Innovation, and Technology; the Federal Ministry for Digital and Economic Affairs, the provinces of Upper Austria, Tyrol, and Styria, as well as the Styrian Business Promotion Agency (SFG). Besides the public funding, the project is financed by voestalpine Stahl, and voestalpine Stahl Donawitz.

Publisher Copyright:
© 2019, The Author(s).

Schlagwörter

  • RecoDust
  • Zinkrückgewinnung
  • Trockenschlackengranulation
  • Stahlwerksstaub

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