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A Study on the Supersonic Jet Nozzle to Improve of the Operating Efficiency of the Converter Process
전로 공정 조업 효율 향상을 위한 초음속 제트 노즐 연구
Jae-Hong Kwon, Ji-A Lee, Kyeng-Uk Lee, Jeong-Whan Han
권재홍, 이지아, 이경욱, 한정환
Korean J. Met. Mater. 2020;58(8):550-559.   Published online 2020 Jul 27
DOI: https://doi.org/10.3365/KJMM.2020.58.8.550

Abstract
Recently, various worldwide studies have been conducted to improve converter operation by modifying the lance nozzle. In this study, a numerical analysis of the lance nozzle was conducted to improve the dephosphorization efficiency, and to reduce blowing time. The lance nozzle was designed in the form of an abnormal expansion..... More

                        
Corrosion Behavior of SiC and Si3N4 by Alkali Gas
알칼리 가스에 의한 SiC 및 Si3N4의 침식 거동
Ju-Hun Kim, Kang-Min Kim, Ji-A Lee, Jeong-il Kim, Jeong-Whan Han
김주훈, 김강민, 이지아, 김정일, 한정환
Korean J. Met. Mater. 2020;58(1):17-25.   Published online 2019 Dec 12
DOI: https://doi.org/10.3365/KJMM.2020.58.1.17

Abstract
Studies of effective furnace cooling technology and refractory materials have extended the lifetime of a blast furnace to more than 15 years. On the other hand, the replacement of refractories in the blast furnace results in considerable cost and time loss for stopping the blast furnace operation. Various kinds of..... More

                        
Effect of Basicity on the Reduction Behavior of Carbon Composite Iron Oxide Briquette
탄재내장 산화철 브리켓의 환원거동에 미치는 염기도 영향
Jae-Hong Kwon, Eui-Hyuk Kwon, Ki-Woo Lee, Kang-Min Kim, Ji-A Lee, Jeong-Whan Han
권재홍, 권의혁, 이기우, 김강민, 이지아, 한정환
Korean J. Met. Mater. 2016;54(11):846-854.   Published online 2016 Nov 5
DOI: https://doi.org/10.3365/KJMM.2016.54.11.846

Abstract
The world is gradually running short of high quality iron resources. This forces ironmaking processes to focus on the use of low quality iron ores. Carbon composite iron oxide briquettes (CCB) are one of the alternative choices. CCB enables the utilization of low quality powdered iron ores and coal, and..... More

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