Converter steelmaking is the main stage in ore-based production using blast furnace hot metal and steel scrap as charge materials. Over 70% of steel is produced via basic oxygen converters today. The converter process was developed in the middle of nineteenth century by blowing air through pig iron melt for decarburisation. The subsequent innovation was basic lining and the Thomas process. The next problem, the switch from air to oxygen was hard and did not succeed on an industrial scale until the 1950s when oxygen blowing via top lance was developed. Oxygen bottom blowing was then solved by applying annular nozzles with hydrocarbon cooling. Current technologies combine benefits of top and bottom blowing in hybrid processes. In this review, the history of converter processes is briefly surveyed. Recent progress and challenges, e.g. better utilisation of post combustion for scrap melting, are discussed. Continuous converting and the future role of converter process are also highlighted.
AbildgaardO, de LassatY, MalgariniG, MirabileM, BorgianniC, PoosA, VannsonP, SteffenR, WelbournB.1997. European direct steel feasibility study. Brussels: European Commission, EUR 17824.
2.
AukrustE.1994. AISI direct steelmaking program. Final Technical Report. DOE/ID/12847-7 (DE94017940); p. 155.
3.
BarracgloughRF.1990. Steelmaking 1850–1900. London: The Institute of Metals.
4.
BarthO.1942. Metallurgian oppikirja – osa 2 (textbook on metallurgy, part 2 ironmaking and steelmaking). 1st ed. Turku: Otava; p. 272.
5.
BerthetA, KrugJC, RouanetJ, VayssiereP.1971. The industrial development of irsid continuous steelmaking process. Proceedings of international conference on the Science and Technology of Iron and Steel; Sept. 7–11; Tokyo. Part I; p. 272–277.
6.
BessemerH.1989. Sir Henry Bessemer, F.R.S. An autobiography. London: The Institute of Metals. First printed at The Bedford Press, 20–21, Bedfordbury Strand, London WC, 1905.
7.
BoomR.Mastering the heat in the Fe-C-O converter: evolution of process control in fifty years of oxygen steelmaking. Proceedings 4th European Oxygen Steelmaking Conference; May 12–15, 2003; Graz, Austria; p. 19–37.
8.
BouverPHF.1992. Operating and marketing results of the production of intermediate-carbon ferrochromium in a CLU converter. INFACON 6. Proceedings of the 6th International Ferroalloys Conferenge, Capetown. Volume I, SAIMM; p. 119–122.
9.
BrooksGA, RossNG, WornerHK.1997. Continuous steelmaking: a balance between intensity and refining. AIST Steelmaking Conf. Proceedings; p. 631–636.
10.
BrotzmannK.1979. Basic oxygen steelmaking – a new technology emerges?London: The Metals Society; p. 41.
11.
ChatterjeeA, MariqueC, NillesP.1984. Fundamentals of steelmaking metallurgy. Ironmaking Steelmaking. 11(3):117–131.
12.
CobbHM, editor. 2012. Dictionary of metals, appendix I: metals history timeline. Materials Park (OH): ASM International; p. 304.
13.
DaviesDRG, RhydderchMJ, ShawLJ.1967. Spray steelmaking at Millom. J Iron Steel Inst. 205:810–813.
14.
DuboisCA, BosquetJP, ChapellierP, DidryG, MailhanJC, GrisvardC, HuberJC.2000. Startup of a post-combustion lance at Sollac Lorraine. EOSC’00, 3rd European Oxygen Steelmaking Conference Proceedings, 30/11/2000 - 1/12/2000, Birmingham, UK.
15.
ECSC. 2002. Research project ‘Development of a combined post-combustion model (CPM) for smelting reduction processes’. ECSC 7210-AA/419, 1994–1997.
16.
EketorpS.1971. Continuous iron- and steelmaking – fundamentals and technical possibilities. Proceedings of International Conference on the Science and Technology of Iron and Steel; Sept 7–11, 1970; Tokyo. Part I; p. 282–287.
17.
EketorpS.1983. Process metallurgy – discussions of present systems and their future possibilities. Part 1. Compendium of lectures at the Beijing University of Iron and Steel Technology; Sept–Oct 1983. Stockholm: Royal Institute of Technology.
18.
FarrandBL, WoodJE, GoetzFJ.1992. Post combustion trials at Dofascós KOBM furnace. In: 75 Steelmaking Conference Proceedings; Toronto Canada; Iron & Steel Society; p. 173–179.
19.
FritzE, GebertW.2005. Milestones and challenges in oxygen steelmaking. Can Metall Q. 44(2):249–260. doi: 10.1179/cmq.2005.44.2.249
20.
FruehanRJ, MatwayRJ.2005. Optimization of post combustion in steelmaking. Final Report. AISI/DOE Technology Roadmap Program; p. 24.
21.
GayeH, GrosjeanJC, HuinD, RothJL, ZbaczyniakY.1990. Studies on post-combustion in an oxygen converter: mechanisms and operations, 3rd international Oxygen Steelmaking Congress; May 15–17, London.
22.
GeckH-G, ChitilM.1986. Development of the Klöckner steel production process. Contract No. 7210-CB/101. Final Report EUR 9814. Published 1996-08-02 CD-NA-09-814-EN-C; p. 28.
23.
GossNP, BloughAK.1971. Continuous steel making in rotary reactor system. Proceedings of International Conference on the Science and Technology of Iron and Steel; Sept 7–11, 1970; Tokyo. Part I; p. 287289–277.
24.
GouH, IronsGA, LuWK.1992. Mathematical modelling of post-combustion in Dofasco's K-OBM; 75th Steelmaking Conf; Apr 5–8, Toronto; p. 181–185.
25.
GraefR, DickW, von BogdandyL.1957. Rotor steelmaking process. J Met. 9(11):1135–1139.
26.
GranhedS.2004. Bessemer och Thomasprocesserna; in: Järn- och stålframställning – Utvecklingen i Sverige 1850 till 2000. Del 2. Jernkontorets bergshistoriska skriftserie 41.
27.
HabashiF.1994. A history of metallurgy. Métallurgie Extractive Québec, Enr. Canada.
28.
HamagamiK, GotohS, AsahoR, KugaM.1992. Operational results of bottom blown converter with post-combustion lance; 18th OBM/Q-BOP Meeting, Salzburg; Sep 14–17.
HauttmannHF.1953. Properties of LD-steels; in: one year LD-Steel. Vöest 1953. VUB, Innsbruck-Linz; p. 11–15.
31.
HiraiM, TsujinoR, MukaiT, HaradaT, OmoriM.1987. Mechanism of post combustion in the converter. Trans Iron Steel Inst Jpn. 27:805–813. doi: 10.2355/isijinternational1966.27.805
32.
HöferF, PatelP, SelenzHJ.1992. Fundamentals of post-combustion in steelmaking vessels. Steel Res. 63(4):172–178. doi: 10.1002/srin.199200494
33.
HolappaL, JalkanenH.2003. Copper and steel converting – a critical comparison. Yazawa Int. Symposium on Metallurgical and Materials Processing, Principles and Technologies, TMS. vol. 2: High-temperature Metals Production; Mar 2–6; San Diego, CA; p. 401–416.
34.
IbarakiT, YamauchiM, MatsuoM, KatayamaH.1995. Experimental operation of smelting reduction with a 100-t smelter. II. Post-combustion and dust; I&SM; Mar 1995; p. 91–98.
35.
JalkanenH, HolappaL.2013. Converter steelmaking. In: SeetharamanS, HolappaL, editors. Treatise on process metallurgy, Vol. 3: industrial processes, part 1 ferrous process metallurgy. Oxford: Elsevier; p. 223–270.
36.
KnuppelH, BrotzmannK, FassbiederHG, SavardG, LeeR.1972. Method for refining pig iron into steel, U.S. Patent, No. 3706549; Dec 19 1972.
37.
KriegerW.2003. 50 years LD steelmaking – 50 years of innovation. Proc. 4th European Oxygen Steelmaking Conference; May 12–15 2003; Graz, Austria; p. 3–17.
38.
KrivskyWA.1973. The Linde argon-oxygen process for stainless steel; A case study of major innovation in a basic industry. Metall Trans. 4:1439–1447.
39.
LassilaI, HolappaL, ValovirtaE.2004. Investigation on post combustion phenomena in BOF by in-situ gas analysis. Scanmet II, 2nd Int. Conf. On Process Development in Iron and Steelmaking; Jun 6–8, 2004; Luleå, Sweden; p. 225–232.
40.
MackeyPJ, BrimacombeJK.1992. Solid-liquid and gas-liquid interactions in a bath-smelting reactor. Proc. Savard/Lee International Symposium on Bath Smelting. The Met. Society of AIME, Warrendale, PA; p. 353–375.
41.
MaubonA.1979. Recent developments of LWS operation and experiments in progress. In: Basic Oxygen Steelmaking – a new technology emerges. London: The Metals Society; p. 53–56.
42.
MichaelisEM.1979. Introductory address: a review of progress from Bessemer and Thomas to LD, LD-AC, OLP, Graef-Rotor, Kaldo, OBM/QBOP, and LWS. In: Basic oxygen steelmaking–a new technology emerges. London: The Metals Society; p. 1–10.
43.
MouselR.1979. LD-AC steelmaking at ARBED. In: Basic oxygen steelmaking – a new technology emerges. London: The Metals Society; p. 34–40.
44.
NakagawaR, UedaT, YoshimatsuS, SatoA, MitsuiT, UeharaI, FukuzawaA.1971. Continuous steelmaking in NRIM. Proceedings of International Conference on the Science and Technology of Iron and Steel; Sept. 7–11, 1970; Tokyo. Part I; p. 290–293.
45.
PatilBV, ChanAH, ChouletRJ.1998. Refining of stainless steels. chapter 12. In: FruehanRJ, editor. The making, shaping, and treating of steel: steelmaking and refining volume. Pittsburgh, PA: The AISE Steel Foundation; p. 715–718.
46.
RamacciottiA, PraitoniA, SpaggiariT, ImbertiB, de RosaG.1971. Rotovert: a new steelmaking process. Proceedings of International Conference on the Science and Technology of Iron and Steel; Sept 7–11, 1970; Tokyo. Part I; p. 297–300.
47.
RhydderchMJ.1967. Spray steelmaking. J Iron Steel Inst. 205:814–817.
48.
SandlöbesS, SenkD, SanchoL, DiazA.2011. In-situ measurement of CO- and CO2-concentrations in BOF off-gas. Steel Res Int. 82(6):632–637. doi: 10.1002/srin.201000223
49.
SavardG, LeeR.1966. Improvements in metallurgical process, French Patent, No.1450718, 18 July 1966.
50.
SrinivasanS, RanganathanS.2004. Indiás legendary wootz steel. Bangalore: National Institute of Advanced Studies, and Indian Institute of Science.
TakahashiK, TanabeH, IwasakiK, MuroyaM, KikuchiI, KawakamiM.1990, November. Key factors to improve post-combustion in pressurized converter type smelting reduction vessel. Tetsu-to-Hagané. 76(11):123–128. doi: 10.2355/tetsutohagane1955.76.11_1887
53.
TakashibaN, NiraM, KojimaS, TakeH, YoshikawaF.1989. Development of the post combustion technique in combined blowing converter. Tetsu-to-Hagané. 75:89–96. doi: 10.2355/tetsutohagane1955.75.1_89
54.
TomàsE.1999. The Catalan process for the direct production of malleable iron and its spread to Europe and the Americas. Institut d'Estudis Catalans, Barcelona. Contrib Sci. 1(2):225–232.
55.
TrenklerHA.1953. The metallurgical principles of steel refining with pure oxygen by the LD-process. In: One Year LD-Steel. Vöest 1953. VUB, Innsbruck-Linz; p. 17–34.
56.
TylecoteRF.1984. History of metallurgy, 3rd impression. London: The Metals Society; p. 182.
57.
UmezawaT.1992. Scrap melting process – current status and future prospects. Tetsu-to-Hagane. 78(4):12–18. doi: 10.2355/tetsutohagane1955.78.4_520
58.
WiborghJG.1904. Järnets metallurgi. Föreläsningar. Stockholm: Albert Bonniers Förlag.
WornerHK, BakerFH.1971. WORCRA steelmaking. Proceedings of International Conference on the Science and Technology of Iron and Steel; Sept. 7–11, 1970; Tokyo. Part I; p. 277–282.
61.
ZhangL, OetersF.1991. A model of post-combustion in iron-bath reactors, part 1: theoretical basis, part 2: results for combustion with oxygen. Steel Res. 62(3):95–106. doi: 10.1002/srin.199101258
62.
ZimmermannR, GüntherK.1975. In: Metallurgie und Werkstofftechnik, Band 2. VEB. Deutscher Verlag für Grundstoffindustrie, Leipzig DDR; p. 197–200.
