Heikkilä, A., Iljana, M., Bartusch, H. and Fabritius, T. (2020), Reduction of Iron Ore Pellets, Sinter, and Lump Ore under Simulated Blast Furnace Conditions. steel research int.. doi:10.1002/srin.202000047
Reduction of iron ore pellets, sinter, and lump ore under simulated blast furnace conditions
|Author:||Heikkilä, Anne1; Iljana, Mikko1; Bartusch, Hauke2;|
1Process metallurgy research unit/University of Oulu, P. O. Box 4300, FI-90014 University of Oulu, Finland
2VDEh-Betriebsforschungsinstitut GmbH, Germany
|Online Access:||PDF Full Text (PDF, 2.8 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2020100277886
John Wiley & Sons,
|Publish Date:|| 2020-10-02
A blast furnace (BF) is the dominant process for making iron in the world. The BF is charged with metallurgical coke and iron burden materials including iron ore pellets, sinter, and lump ore. While descending in the BF the charge materials reduce. The iron‐bearing materials should reduce fast and remain in the solid form until as high a temperature as possible to ensure reaction contact with reducing gas and iron oxides. Herein, the reducibility of the iron ore pellet, sinter, and lump ore in the BF shaft are focused on. The experiments are conducted isothermally with a blast furnace simulator (BFS) high‐temperature furnace at four different temperatures (700, 800, 900, and 1000 °C) for 300 min. The experimental atmosphere consists of CO, CO₂, H₂, H₂O, and N₂ simulating the conditions in the BF shaft. It is found that lump ore has lowest reduction rate in all test conditions, and at lower temperatures iron ore pellets reduce faster than sinter, and this is reversed at higher temperatures. Furthermore, the reduction rate of sinter and iron ore pellets begins to resemble each other at higher temperatures.
Steel research international
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
216 Materials engineering
The work presented here was conducted with a financial grant from the Research Fund for Coal and Steel (RFCS) of the European Community with grant agreement no. 709816 and project title “Online Blast Furnace Stack Status Monitoring."
© 2020 The Authors. Published by WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.