An Analysis of the Structure of Iron Ore Sinter Cake

Eiki Kasai, Yasuo Omori, William J. Rankin, Roy R. Lovel

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

Physical properties of sinter cake such as strength and permeability are strongly related to its structure. In this investigation, the 3-dimensional structure of voids in sinter cakes prepared from raw mix with a range of coke contents was quantified using image analysis. The physical properties were then compared with the measured structural parameters. The results obtained are of a preliminary nature and the interpretations are not conclusive. However, a possible way to evaluate sinter strength was identified which utilizes the measured values of void fraction and specific surface area of the sinter cake. The work also showed that when a sinter cake is considered to be a packed bed, the “apparent” diameters of the particles used for estimating gas flow resistance across the bed and heat exchange rates between gas and solid are different for the respective transport phenomena. A theoretical analysis of the magnitudes of forces acting on granules was made to identify the causes of the rearrangement of a bed during sintering.

Original languageEnglish
Pages (from-to)635-641
Number of pages7
JournalIsij International
Volume29
Issue number8
DOIs
Publication statusPublished - 1989

Keywords

  • Heat exchange rate
  • Image analysis
  • Iron ore
  • Permeability
  • Pore
  • Sinter
  • Sinter cake
  • Structure
  • Void fraction

ASJC Scopus subject areas

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

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