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Operation at high pellet ratio and without external slag formers: trials in an experimental blast furnace
LKAB.
LKAB.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
2009 (English)In: Steel Research International, ISSN 1611-3683, E-ISSN 1869-344X, Vol. 80, no 6, p. 379-389Article in journal (Refereed) Published
Abstract [en]

Blast furnaces that operate with pellets and sinter normally use high basicity sinter and acid pellets to balance the slag chemistry. When external additives are used, irregular slag formation occurs due to their uneven distribution in the burden. If basic sinter is used together with a large amount of acid pellets, all additives are incorporated in the iron bearing materials with an improved burden mixture as a consequence. During a campaign in the LKAB Experimental Blast Furnace, pellets and sinter were operated at an ultra low slag volume. A high amount of pellets was balanced with high basicity sinter. An improved blast furnace operation is shown when operating at ultra low slag volume and without external slag formers. During the test period, the blast furnace operation was smooth and stable, and the reductant rate was decreased.

Place, publisher, year, edition, pages
2009. Vol. 80, no 6, p. 379-389
Keywords [en]
Technology - Chemical engineering
Keywords [sv]
Teknikvetenskap - Kemiteknik
National Category
Metallurgy and Metallic Materials
Research subject
Process Metallurgy
Identifiers
URN: urn:nbn:se:ltu:diva-6718DOI: 10.2374/SRI09SP025ISI: 000267546800013Scopus ID: 2-s2.0-67749122351Local ID: 4ffee070-7ab0-11de-9f57-000ea68e967bOAI: oai:DiVA.org:ltu-6718DiVA, id: diva2:979604
Note
Validerad; 2009; 20090727 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Wikström, Jan-OlovBjörkman, Bo

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CiteExportLink to record
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  • apa
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