Change in the structure and pressure drop of sintering bed with the addition of FeO as agglomeration agent

Kazuya Fujino, Taichi Murakami, Eiki Kasai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Considering the remarkable growth of steel produstion, lower grade iron ore resources have been required to be extensively utilized. In addition, lowering of coke consumption in the sintering process is another demand from the viewpoints of energy FeO bearing materials, e. g., millscale and partially reduced iron are focused as a altenative agglomeration agents of coke. Fundamental study on changes in structure and pressure drop of the sintering bed was carried out using lab-scale differential type sintering simulator. In the experiment, Coke, Metallic iron, FeO and CaO particles and model mini-pellet (Alumina Cored pellet: ACP) made of alumina ball as a nuclei particle and fine mixture of CaO and Fe2O3 as adhering shell are used as raw materials. When using (ACP + Coke), pressure drop increased until ACP started to melt. Then, it decreased gradually. (ACP + Metallic iron) showed similar behavior to (ACP + Coke) at the first step but it increase again and showed a second peak. (ACP + FeO) did not show significant change in pressure drop and structure of the bed through melting process. In contrast, such changes were clearly observed in the case of CaO addition. These results shows that existing state of CaO component strongly affects the structural change of sintering bed.

Original languageEnglish
Title of host publication6th Int. Congress on the Science and Technology of Ironmaking 2012, ICSTI 2012 - Including Proceedings from the 42nd Ironmaking and Raw Materials Seminar, and the 13th Brazilian Symp. on Iron Ore
Pages1233-1241
Number of pages9
Publication statusPublished - 2012 Dec 1
Event6th International Congress on the Science and Technology of Ironmaking 2012, ICSTI 2012 - Rio de Janeiro, Brazil
Duration: 2012 Oct 142012 Oct 18

Publication series

Name6th Int. Congress on the Science and Technology of Ironmaking 2012, ICSTI 2012 - Including Proceedings from the 42nd Ironmaking and Raw Materials Seminar, and the 13th Brazilian Symp. on Iron Ore
Volume2

Other

Other6th International Congress on the Science and Technology of Ironmaking 2012, ICSTI 2012
CountryBrazil
CityRio de Janeiro
Period12/10/1412/10/18

Keywords

  • Bed permeability
  • Existing state of CaO
  • FeO
  • Sinter
  • Sintering simulator

ASJC Scopus subject areas

  • Metals and Alloys

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