ELECTRIC ARC FURNACE DUST: CHARACTERIZATION OF FLOWABILITY

1 LANZERSTORFER Christof
Co-authors:
2 BRUNNER Christian
Institutions:
1 University of Applied Sciences Upper Austria, Wels, Austria, EU, c.lanzerstorfer@fh-wels.at
2 Primetals Technologies Austria GmbH, Linz, Austria, EU, christian.a.brunner@primetals.com
Conference:
32nd International Conference on Metallurgy and Materials, Orea Congress Hotel Brno, Czech Republic, EU, May 17 - 19, 2023
Proceedings:
Proceedings 32nd International Conference on Metallurgy and Materials
Pages:
26-32
ISBN:
978-80-88365-12-9
ISSN:
2694-9296
Published:
13th June 2023
Metrics:
229 views / 231 downloads
Abstract

Considerable amounts of dust are generated as by-product in electric arc furnace (EAF) steel production. Dry off-gas de-dusting systems, usually dust filters are used to collect these dusts from the off-gas. In the design and operation of storage and transport equipment for the collected dusts the flow properties of the dusts play an important role. The properties relevant for particle flow – angle of internal friction, wall friction angle, bulk density and time consolidation - of EAF filter dusts originating from eight steel mills were investigated. The results showed significant differences between the EAF dusts from different steel mills. The variations of the various parameters are shown and some consequences for the design of EAF dust silos and filter hoppers are discussed.

Keywords: Steel mill, electric arc furnace, dust storage, flow properties

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