Kinetics of dissolution of SiO gas in liquid Fe–C alloys

Joon Seok Oh; Hyun Soo Kim; Jeoungho Lee; Sukkwang Jung; Joonho Lee

doi:10.2355/isijinternational.ISIJINT-2018-463

Kinetics of dissolution of SiO gas in liquid Fe–C alloys

Joon Seok Oh, Hyun Soo Kim, Jeoungho Lee, Sukkwang Jung, Joonho Lee

Department of Materials Science and Engineering

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

4 Citations (Scopus)

Abstract

The dissolution rate of SiO gas in liquid iron (Fe-2 wt% C and Fe-4 wt% C alloys) was investigated at 1 843, 1 868, and 1 893 K. SiO gas was generated from a silica-graphite particle mixture, and then, it was introduced onto the surface of liquid iron through an alumina lance with CO carrier gas. The effect of gas-phase mass transfer on the dissolution rate of SiO gas was minimized by adjusting the CO gas flow rate. The rate of silicon transfer remained almost constant regardless of the initial carbon content in liquid iron, whereas it increased with increasing temperature. From the experimental results, it was concluded that the adsorption of SiO gas onto the surface of liquid iron was the rate-determining step.

Original language	English
Pages (from-to)	2246-2252
Number of pages	7
Journal	ISIJ International
Volume	58
Issue number	12
DOIs	https://doi.org/10.2355/isijinternational.ISIJINT-2018-463
Publication status	Published - 2018 Dec

Keywords

Hot metal
Ironmaking process
Rate-determining step
Si transfer
SiO gas

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.2355/isijinternational.ISIJINT-2018-463

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title = "Kinetics of dissolution of SiO gas in liquid Fe–C alloys",

abstract = "The dissolution rate of SiO gas in liquid iron (Fe-2 wt% C and Fe-4 wt% C alloys) was investigated at 1 843, 1 868, and 1 893 K. SiO gas was generated from a silica-graphite particle mixture, and then, it was introduced onto the surface of liquid iron through an alumina lance with CO carrier gas. The effect of gas-phase mass transfer on the dissolution rate of SiO gas was minimized by adjusting the CO gas flow rate. The rate of silicon transfer remained almost constant regardless of the initial carbon content in liquid iron, whereas it increased with increasing temperature. From the experimental results, it was concluded that the adsorption of SiO gas onto the surface of liquid iron was the rate-determining step.",

keywords = "Hot metal, Ironmaking process, Rate-determining step, Si transfer, SiO gas",

author = "Oh, {Joon Seok} and Kim, {Hyun Soo} and Jeoungho Lee and Sukkwang Jung and Joonho Lee",

note = "Funding Information: This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20172010106300), and POSCO (POSCO research grant). Publisher Copyright: {\textcopyright} Iron and Steel Institute of Japan. All Rights Reserved.",

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doi = "10.2355/isijinternational.ISIJINT-2018-463",

language = "English",

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AU - Oh, Joon Seok

AU - Kim, Hyun Soo

AU - Lee, Jeoungho

AU - Jung, Sukkwang

AU - Lee, Joonho

N1 - Funding Information: This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20172010106300), and POSCO (POSCO research grant). Publisher Copyright: © Iron and Steel Institute of Japan. All Rights Reserved.

PY - 2018/12

Y1 - 2018/12

N2 - The dissolution rate of SiO gas in liquid iron (Fe-2 wt% C and Fe-4 wt% C alloys) was investigated at 1 843, 1 868, and 1 893 K. SiO gas was generated from a silica-graphite particle mixture, and then, it was introduced onto the surface of liquid iron through an alumina lance with CO carrier gas. The effect of gas-phase mass transfer on the dissolution rate of SiO gas was minimized by adjusting the CO gas flow rate. The rate of silicon transfer remained almost constant regardless of the initial carbon content in liquid iron, whereas it increased with increasing temperature. From the experimental results, it was concluded that the adsorption of SiO gas onto the surface of liquid iron was the rate-determining step.

AB - The dissolution rate of SiO gas in liquid iron (Fe-2 wt% C and Fe-4 wt% C alloys) was investigated at 1 843, 1 868, and 1 893 K. SiO gas was generated from a silica-graphite particle mixture, and then, it was introduced onto the surface of liquid iron through an alumina lance with CO carrier gas. The effect of gas-phase mass transfer on the dissolution rate of SiO gas was minimized by adjusting the CO gas flow rate. The rate of silicon transfer remained almost constant regardless of the initial carbon content in liquid iron, whereas it increased with increasing temperature. From the experimental results, it was concluded that the adsorption of SiO gas onto the surface of liquid iron was the rate-determining step.

KW - Hot metal

KW - Ironmaking process

KW - Rate-determining step

KW - Si transfer

KW - SiO gas

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U2 - 10.2355/isijinternational.ISIJINT-2018-463

DO - 10.2355/isijinternational.ISIJINT-2018-463

M3 - Article

AN - SCOPUS:85058960314

SN - 0915-1559

VL - 58

SP - 2246

EP - 2252

JO - ISIJ International

JF - ISIJ International

IS - 12

ER -

Kinetics of dissolution of SiO gas in liquid Fe–C alloys

Abstract

Keywords

ASJC Scopus subject areas

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