Effect of Aspect Ratio on Iron-Ore Briquettes During Twin-Roll Briquetting

• Autorzy: Kim Kang-Min , Bae Jong-Ho , Han Jeong-Whan

Identyfikatory

DOI

10.24425/amm.2020.133695

• Języki publikacji: EN

Abstrakty

EN

In the ironmaking, sizes of raw materials such as iron ores and coke must be adjusted for subsequent process in the blast furnace. The depletion of high grade iron ore in recent years necessitates a technology that can utilize low-grade fine iron ores. Thus, steelmakers have been studying the sinter-briquette complex firing process that employs a method of charging the sinter feed together with briquettes made of fine iron ore. In this process, larger briquettes increase the briquette productivity per unit time but decrease the green strength of briquettes and they can break during transportation and charging. Thus, the briquette shape is very important. Therefore, in this study, we simulate a twin roll briquetting process using the DEM analysis and compared the compressive force distributions in the briquette for different aspect ratios. This study is a new attempt, because research cases by numerical methods on the same or similar systems are very rare. Consequently, the optimal aspect ratio is 0.5 at briquette height 20 mm, 2.0 at 30 mm, and 1.5 at 40 mm. Also, the average compressive force increased in proportion with the pocket height at the sameaspect ratio. Therefore, to increase the pocket depth for high productivity, the pocket height must also be increased for obtaining high strength briquettes.

Słowa kluczowe

EN

numerical analysis; discrete element method; roll briquetting

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2020
• Tom: Vol. 65, iss. 4
• Strony: 1335--1339
• Opis fizyczny: Bibliogr. 8 poz., fot., rys., tab., wzory

Twórcy

autor

Kim Kang-Min

• Inha University, Department of Materials Science and Engineering, 100 Inha-ro, Nam-gu, Incheon 22212, Republic of Korea

autor

Bae Jong-Ho

• Inha University, Department of Materials Science and Engineering, 100 Inha-ro, Nam-gu, Incheon 22212, Republic of Korea

autor

Han Jeong-Whan

• Inha University, Department of Materials Science and Engineering, 100 Inha-ro, Nam-gu, Incheon 22212, Republic of Korea

Bibliografia

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• [7] S. Ueda, T. Kon, H. Kurosawa, S. Natsui, T. Ariyama, H. Nogami, ISIJ Int. 55, 1232 (2015).
• [8] K. M. Kim, J. H. Bae, J. I. Park, J. W. Han, Met. Mater. Int., Online publication (2019).

Uwagi

EN

1. This research was financially supported by 2020 InHa University research fund.

PL

2. Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).