Abstract
Softening and melting experiments were conducted on four kinds of imported lump ores named A-D, under different temperature intervals within the self-developed visualization high temperature furnace. By calculating the reduction and shrinking degree under different intervals, softening and melting indexes were determined. These ores all expanded firstly followed by shrinkage with the temperature increasing. The difference of lump ore’s own characteristic led to different softening and melting behavior. The results showed that the looser the structure was, the better the reducibility will be. The compact structure and good reducibility led to high expansion rate. The beginning softening temperature declined and the ending softening temperature increased because of high porosity, which resulted in wide softening temperature interval. The charging ratio of lump ore A should be improved. Lump ore B should be distributed in the center of the blast furnace. Lump ores C and D should be used less.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Yutaka J, et al., “Subjects for Achievement of Blast Furnace Operation With Low Reducing Agent Rate,” ISIJ International, 45 (10) (2005), 1379.
Ritz V J, Kortmann H A, and Koch K., “Reduction. Softening and Melting Properties of Pellets, Sinters, Lumpy Ore and Mixed Blast Furnace Burden” (Paper presented at the 2nd International Congress on the Science and Technology of Ironmaking and 57th Ironmaking Conference, Toronto, Canada, 1998), 1635.
Nogueira P F, and Fruehan R J. “Fundamental Studies on Blast Furnace Burden Softening and Melting” (Paper presented at the 2nd International Meeting on Ironmaking and the 1st International Symposium on Iron Ore, Rio de Janeiro, Brazil, 2004), 893.
Mousa E, Senk D, and Babich A, “Reduction of Pellets-Nut Coke Mixture Under Simulating Blast Furnace Condition,” Steel Research International, 81 (9) (2010), 706.
Loo C E, Matthews L T, and O’dea D P, “Lump Ore and Sinter Behavior during Softening and Melting,” ISIJ International, 51 (6) (2011), 930–938.
Kaushik P., and Fruehan R J, “Mixed Burden Softening and Melting Phenomena in Blast Furnace Operation, Part 3-Mechanism of Burden Interaction and Melt Exudation Phenomenon,” Ironmaking and Steelmaking, 34 (1) (2007), 10.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2016 TMS (The Minerals, Metals & Materials Society)
About this chapter
Cite this chapter
Qi, Z., Wu, S., Kou, M., Liu, X., Wang, L., Wang, Y. (2016). Studying on Softening and Melting Behavior of Lump Ore in Blast Furnace. In: Hwang, JY., et al. 7th International Symposium on High-Temperature Metallurgical Processing. Springer, Cham. https://doi.org/10.1007/978-3-319-48093-0_88
Download citation
DOI: https://doi.org/10.1007/978-3-319-48093-0_88
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48617-8
Online ISBN: 978-3-319-48093-0
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)