Design of bed structure aiming the control of void structure formed in the sinter cake

Eiki Kasai, Sergey Komarov, Koichi Nushiro, Masanori Nakano

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

Design of bed structure is a promising approach to maintain/increase the productivity of sinter under the condition of increasing use of iron ores having high combined water content. In this paper, a new process image, MEBIOS, is illustrated and further "in situ" observation of the change in the void structure of the sintering bed by using X-ray CTS and a numerical simulation have been conducted in order to preliminary evaluate the possibility of this proposal. X-ray CTS observation suggests that the existence of pellets of 15mm in size does not significantly affect the formation of macroscopic void network in the sintering bed and not lead to inhomogeneous sintering, A series of the laboratory-scale of sinter pot experiment was also carried out to obtain parameters for the simulation. The gas flow near the pellet surface and the differences in the temperature profiles among the pellet center and surface were simulated by using the numerical model although further studies are necessary, e.g., on the considering ways of structural changes of void in the sintering bed, reduction and oxidation reactions and a mesh generation method properly representing the contraction of bed height.

Original languageEnglish
Pages (from-to)538-543
Number of pages6
JournalIsij International
Volume45
Issue number4
DOIs
Publication statusPublished - 2005 Jun 22

Keywords

  • Aging bed
  • Bed structure
  • Induction bed
  • Iron ore sintering
  • Numerical simulation
  • Sinter cake
  • Void network
  • X-ray CTS

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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