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Physical Modeling Study on the Mixing in the New IronArc Process
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Materialens processteknologi.ORCID-id: 0000-0002-9413-4098
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Materialens processteknologi.ORCID-id: 0000-0003-4384-7984
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap.ORCID-id: 0000-0002-1203-0181
ScanArc Plasma Technol AB, SE-81321 Hofors, Sweden..
Vise andre og tillknytning
2018 (engelsk)Inngår i: Steel Research International, ISSN 1611-3683, E-ISSN 1869-344X, Vol. 89, nr 7, artikkel-id 1700555Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

IronArc is a newly developed technology for pig iron production with the aim to reduce the CO2 emission and energy consumption, compared to a conventional blast furnace route. In order to understand the fluid flow and stirring in the IronArc reactor, water modeling experiments are performed. Specifically, a down scaled acrylic plastic model of the IronArc pilot plant reactor is used to investigate the mixing phenomena and gas penetration depth in the liquid bath. The mixing time is determined by measuring the conductivity in the bath, after a sodium chloride solution is added. Moreover, the penetration depth is determined by analyzing the pictures obtained during the experimental process by using both a video camera and a high speed camera. The results show that the bath movements are strong and that a circular movement of the surface is present. The mixing in the model for the flow rate of 282 NLmin(-1) is fast. Specifically, the average mixing times are 7.6 and 10.2s for a 95% and a 99% homogenization degree, respectively. This is 15% and 18% (per degree of homogenization) faster compared to the case when using 3 gas inlets and the same flow rate.

sted, utgiver, år, opplag, sider
WILEY-V C H VERLAG GMBH , 2018. Vol. 89, nr 7, artikkel-id 1700555
Emneord [en]
Blast Furnace, CO2 Reduction, IronArc Process, Ironmaking, Mixing, Pig Iron Production
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-232398DOI: 10.1002/srin.201700555ISI: 000437843900001Scopus ID: 2-s2.0-85044956607OAI: oai:DiVA.org:kth-232398DiVA, id: diva2:1235657
Forskningsfinansiär
Swedish Energy Agency
Merknad

QC 20180726

Tilgjengelig fra: 2018-07-26 Laget: 2018-07-26 Sist oppdatert: 2018-07-26bibliografisk kontrollert

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Bölke, KristoferErsson, MikaelNi, PeiyuanJönsson, Pär

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