Innovations in World Cokemaking Technologies: A Report on the ESTAD 2019 Steel Conference
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Innovations in World Cokemaking Technologies: A Report on the ESTAD 2019 Steel Conference V. I. Rudykaa, *, S. A. Kravchenkoa, *, M. A. Solovjova, **, and V. P. Malynaa, *** a
Giprokoks, Kharkov, Ukraine *e-mail: [email protected] **e-mail: [email protected] ***e-mail: [email protected] Received March 3, 2020; revised March 3, 2020; accepted March 23, 2020
Abstract—New developments in coke production are reviewed on the basis of papers presented at ESTAD 2019. Examples of new designs for coke batteries and ancillary equipment are presented, noting improvements in performance. Keywords: coke, coal blend, blend components, coke batteries, coking pressure, bricklaying repair DOI: 10.3103/S1068364X20060071
ESTAD 2019 (the Fourth European Steel Technology and Application Days) was held in Düsseldorf, Germany, on June 24–28, 2019, in parallel with the METEC trade fair. The organizer was the Steel Institute VDEh. Partners in conference organizations were the Austrian Society for Metallurgy and Materials (ASMET), the Swedish Steel Producers’ Association (Jernkontoret), and the Italian Association for Metallurgy (AIM). Specialists from many countries attended ESTAD 2019. In all 670 papers were presented at 150 sessions, on the following themes: — iron production; — steel production; — rolling and forging of metals; — steel materials and their use, coating application, additional machining of metals; — Industry 4.0; — energy considerations and environmental protection. The presentations at ESTAD 2019 are of great interest for the development of European and world metallurgy. In the sessions on iron production, the following topics were considered: — Industry 4.0 and iron casting; — coke production; — sinter and pellet production; — blast-furnace production; — direct reduction of iron (DRI) and reduction by melting.
In the sessions on coke production, 17 papers were presented, on topics such as the following: — experience in coal blend preparation for coking; fundamentals of coke production; — the latest technological developments; — coke plant operation; — processing and use of coke-oven gas, use of coking byproducts. We now briefly review the papers on coke production. EXPERIENCE IN COAL BLEND PREPARATION FOR COKING, ANALYSIS OF COKING COAL, COKE QUALITY 1. Hyundai Steel (South Korea) presented a paper regarding a new approach to assessing the effect of oxidized high-fluidity coal on the coke’s CSR value [1]. To decrease the cost of the coke, less expensive coal may be introduced in the coal blend. The blend of clinkering coal and poorly clinkering coal must ensure the required coke quality. The rheological properties of the coal blend are critical here: specifically, the fluidity, dilation, and plasticity. The prediction of coke strength may be based primarily on the fluidity. It also indicates the degree of oxidation of the coal. Coal deteriorates under the action of the atmosphere; this is known as weathering. For highly oxidized coal, the reflection coefficient is high. However, this does not imply the
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