Removal of sulfur from CaF 2 containing desulfurization slag exhausted from secondary steelmaking process by oxidation

Takehito Hiraki, Junichi Kobayashi, Satomi Urushibata, Kazuyo Matsubae, Tetsuya Nagasaka

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The oxidation behavior of sulfur in desulfurization slag generated from the secondary steelmaking process with air has been investigated in the temperature range of 973 K to 1373 K (700 °C to 1100 °C). Although a high removal rate of sulfur is not achieved at temperatures lower than 1273 K (1000 °C) because of the formation of CaSO 4, most of the sulfur is rapidly removed from slag as SO 2 gas in the 1273 K to 1373 K (700 °C to 1100 °C) range. This finding indicates that the desulfurization slag generated from the secondary steelmaking process can be reused as a desulfurized flux through air oxidation, making it possible to reduce significantly the amount of desulfurization slag for disposal.

Original languageEnglish
Pages (from-to)703-709
Number of pages7
JournalMetallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Volume43
Issue number4
DOIs
Publication statusPublished - 2012 Aug 1

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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