Properties of sinter produced from mini-pellets consisting of coarse iron ore particles and adhering fine mixtures having quaternaly calcium ferrite composition

Takaho Otomo, Noboru Taguchi, Yasuo Omori, Eiki Kasai

Research output: Contribution to journalArticlepeer-review

Abstract

A wide range of sintering experiments were carried out in order to use a large quantity of fine iron ore for the sintering process and to improve the properties of product sinter. Modeled mini-pellets (named duplex pellets) which consisted of coarse iron ore particles as cores and fine mixture, of which chemical composition was specified to a quaternary (CaO-SiO2-Al2O3-Fe2O3) calcium ferrite, as shell layer were used in the present experiments. The effect of ratio of shell in pellet and of iron ore characteristics on the sintering process and metallurgical properties of the product sinter were examined. The maximum bed temperature decreased with increasing ratio of shell in pellet from 50 to 80 mass%. Reduction degradation property of product sinter was improved with increasing ratio of shell in pellet. When the ratio of shell was 80 mass%, reduction degradation property of product sinter was improved by the use of fine iron ore with good reactivity with limestone.

Original languageEnglish
Pages (from-to)683-690
Number of pages8
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume76
Issue number5
DOIs
Publication statusPublished - 1990

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Properties of sinter produced from mini-pellets consisting of coarse iron ore particles and adhering fine mixtures having quaternaly calcium ferrite composition'. Together they form a unique fingerprint.

Cite this