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Comparison of calculated equilibrium and operation data for blast furnace with focus on silicon
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Tillämpad processmetallurgi.
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Tillämpad processmetallurgi.
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Tillämpad processmetallurgi.
2009 (engelsk)Inngår i: Ironmaking & steelmaking, ISSN 0301-9233, E-ISSN 1743-2812, Vol. 36, nr 5, s. 341-353Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

An investigation of reactions involving blast furnace hot metal, slag and gas at equilibrium was carried out. Performed calculations were based on estimated total gas pressures, measured temperatures and hot metal and slag compositions. Calculated element contents of liquid phases were found to be very similar to their corresponding values determined through measurement when formation of the gas phase was suppressed. This resulted in higher equilibrium CO partial pressures compared to the measured total gas pressure in the bustle ring. When only equilibrium conditions were considered, the predicted amount of silicon was much higher than the measured. A comparison of activity coefficients of elements in the hot metal using different calculation models was also carried out. Two different models based on dilute solutions were compared with the TCFe3 database developed for the software Thermo-Calc, which can handle higher alloying concentrations. Considerably different calculation results were found among the different models studied.

sted, utgiver, år, opplag, sider
2009. Vol. 36, nr 5, s. 341-353
Emneord [en]
Ironmaking, Blast furnace chemistry, Thermodynamics, Calculation, Slags, Cast iron, Gases
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-32354DOI: 10.1179/174328109X401596ISI: 000268731000004Scopus ID: 2-s2.0-68649112150OAI: oai:DiVA.org:kth-32354DiVA, id: diva2:410665
Merknad
QC 20110414Tilgjengelig fra: 2011-04-14 Laget: 2011-04-13 Sist oppdatert: 2017-12-11bibliografisk kontrollert

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Gustavsson, JoelAndersson, Margareta A.T.Jönsson, Pär
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