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

doi:10.1007/s11663-012-9685-8

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 journal › Article › peer-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 language	English
Pages (from-to)	703-709
Number of pages	7
Journal	Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Volume	43
Issue number	4
DOIs	https://doi.org/10.1007/s11663-012-9685-8
Publication status	Published - 2012 Aug 1

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

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Removal of sulfur from CaF ₂ containing desulfurization slag exhausted from secondary steelmaking process by oxidation. / Hiraki, Takehito; Kobayashi, Junichi; Urushibata, Satomi; Matsubae, Kazuyo ; Nagasaka, Tetsuya.

In: Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, Vol. 43, No. 4, 01.08.2012, p. 703-709.

Research output: Contribution to journal › Article › peer-review

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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.",

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AU - Nagasaka, Tetsuya

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