The steelmaking industry produces large quantities of zinc-bearing wastes of varying forms that cannot be treated through integrated steelmaking processes. Simultaneously, by-products of the zinc industry containing great amounts of iron and zinc are stored or landfilled. The amount of zinc in these materials is generally below that which is of value to be recycled directly to the zinc smelter, consequently a method of concentration is required. Tata Steel owns and operates the pilot HIsarna ironmaking plant which, due to its high raw materials flexibility, is attractive for the purpose of processing secondary iron sources. Furthermore, it can facilitate the simultaneous recovery of a zinc-enriched flue dust. The high temperature behaviour of various waste materials will be presented with regards to their recyclability in the HIsarna furnace. Blast furnace (BF) sludge and basic oxygen furnace (BOF) sludge from Tata Steel IJmuiden have been studied along with ‘goethite’ waste produced by Nyrstar. The various input materials have been comprehensively characterised and their reduction/vaporisation behaviour recorded. Mixed samples have been produced and tested in order to define the most appropriate form of delivery of these materials to the HIsarna furnace.

Original languageEnglish
Title of host publicationPbZn 2020
Subtitle of host publication9th International Symposium on Lead and Zinc Processing
EditorsA. Siegmund, S. Alam, J. Grogan, U. Kerney, E. Shibata
Place of PublicationCham, Switzerland
PublisherSpringer
Pages811-819
ISBN (Electronic)978-3-030-37070-1
ISBN (Print)978-3-0303-7069-5
DOIs
Publication statusPublished - 2020
Event9th International Symposium on Lead and Zinc Processing, PbZn 2020, held in conjunction with the 149th Annual Meeting and Exhibition, TMS 2020 - San Diego, United States
Duration: 23 Feb 202027 Feb 2020

Publication series

NameMinerals, Metals and Materials Series
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Conference

Conference9th International Symposium on Lead and Zinc Processing, PbZn 2020, held in conjunction with the 149th Annual Meeting and Exhibition, TMS 2020
CountryUnited States
CitySan Diego
Period23/02/2027/02/20

    Research areas

  • Dusts, HIsarna, Recycling, Self-reduction, Zinc

ID: 70198188