Short-term Lining Temperature Changes during Tapping in a Blast Furnace
2010 (English)In: Steel Research International, ISSN 1611-3683, Vol. 81, no 9, 724-734 p.Article in journal (Refereed) Published
The following paper presents a three-dimensional heat transfer model of the blast furnace hearth. The model has been developed with the objective of studying the short term changes in lining temperature during regular tappings. It is based on the actual conditions of Blast Furnace No. 2 at SSAB Oxelosund in Sweden. The model was evaluated and analysed using thermocouple data from the operating furnace. The study showed that a layer of tap clay around the tap hole had a significant effect on the heat transfer by reducing the heat variations in the lining. More specifically, a layer of 10-15 cm gave the best correlation between calculated and thermocouple data. A simulation was performed where the melt temperature and the tap cycle duration was based on process data from the operating furnace. Moreover, the size of the area subjected to changes due to the regular tappings was defined. It was found to be the region within an angle of 13 degrees from the tap hole, 0.9 m above and 0.8 m below the tap hole.
Place, publisher, year, edition, pages
2010. Vol. 81, no 9, 724-734 p.
Blast furnace, mathematical model, heat transfer, taphole, tap cycles, tap clay
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-13976DOI: 10.1002/srin.201000035ISI: 000281912200005ScopusID: 2-s2.0-77956577386OAI: oai:DiVA.org:kth-13976DiVA: diva2:328736
QC 20100706. Uppdaterad från accepted till published (20101203).2010-07-062010-07-062010-12-03Bibliographically approved