Phosphorus distribution behavior of solid iron reduced from molten Al2O3-CaO-FetO-MgO-SiO2 system at 1 623 k

Nobuhiro Maruoka, Shintaro Narumi, Shin Ya Kitamura

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

During conventional iron making, the temperature exclusively determines the oxygen potential in a blast furnace hearth because of carbon saturation. Consequently, impurities such as phosphorus are reduced and remain in the iron because of the excessively low oxygen partial pressure, which can be controlled using gaseous reductants such as hydrogen and carbon monoxide to produce solid iron because of the low carbon content. We previously investigated the equilibrium distribution of phosphorus between the solid iron and molten slag at 1 623 K by varying the oxygen partial pressure and the basicity of the slag, and the phosphorus content in the solid iron was sufficiently low under the experimental conditions. In this study, the phosphorus distribution behavior was investigated when solid iron was obtained by reducing Al2O3-CaO-FetO-MgO-SiO2 molten oxide, and the system was evaluated based on Fe loss.

Original languageEnglish
Pages (from-to)419-427
Number of pages9
JournalIsij International
Volume55
Issue number2
DOIs
Publication statusPublished - 2015

Keywords

  • Active carbon recycling energy system
  • Direct steelmaking
  • Phosphorus distribution ratio
  • Reduction kinetics

ASJC Scopus subject areas

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

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