TY - JOUR
T1 - Removal of sulfur from CaF 2 containing desulfurization slag exhausted from secondary steelmaking process by oxidation
AU - Hiraki, Takehito
AU - Kobayashi, Junichi
AU - Urushibata, Satomi
AU - Matsubae, Kazuyo
AU - Nagasaka, Tetsuya
N1 - Funding Information:
This study was financially supported by Grant-In-Aid for scientific research (The Japan Society for Promotion of Science in 2009-2012, contract Number 21246114) and an ISIJ Research Promotion Grant (The Iron and Steel Institute of Japan in 2009–2010). T.N. deeply appreciates the great guidance, support, and encouragement given by Professor R.J. Fruehan, Professor A.W. Cramb (now Provost of Illinois Institute of Technology), Professor and Mrs. I. Jimbo (now Tokai University, Japan), Dr. Naoki Kikuchi (now JFE Steel, Japan), and Ms. M. Lesko, Center for Iron and Steelmaking Research, Carnegie Mellon University, Pittsburgh, PA. Careful correction of manuscript by Ms. Liz Webeck is also gratefully acknowledged.
PY - 2012/8
Y1 - 2012/8
N2 - 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.
AB - 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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U2 - 10.1007/s11663-012-9685-8
DO - 10.1007/s11663-012-9685-8
M3 - Article
AN - SCOPUS:84865318395
SN - 1073-5615
VL - 43
SP - 703
EP - 709
JO - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
JF - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
IS - 4
ER -