Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Aki Kärnä"'
Autor:
Timo Fabritius, Mika Järvinen, Aki Kärnä, Petri Sulasalmi, Pentti Kupari, Ville-Valtteri Visuri, Eetu-Pekka Heikkinen
Publikováno v:
Metallurgical and Materials Transactions B. 48:1850-1867
In an earlier work, a fundamental mathematical model was proposed for side-blowing operation in the argon–oxygen decarburization (AOD) process. The purpose of this work is to present a new model, which focuses on the reactions during top-blowing in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a602b64934163f0ef2d7c2f8d06a077
https://doi.org/10.1007/s11663-017-0960-6
https://doi.org/10.1007/s11663-017-0960-6
Autor:
Aki Kärnä, Petri Sulasalmi, Eetu-Pekka Heikkinen, Ville-Valtteri Visuri, Timo Fabritius, Mika Järvinen, Pentti Kupari
Publikováno v:
Metallurgical and Materials Transactions B. 48:1868-1884
In earlier work, a fundamental mathematical model was proposed for side-blowing operation in the argon oxygen decarburization (AOD) process. In the preceding part “Derivation of the Model,” a new mathematical model was proposed for reactions duri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::56c98e201643c2de2bc00e50d4abc334
https://doi.org/10.1007/s11663-017-0961-5
https://doi.org/10.1007/s11663-017-0961-5
Autor:
Aki Kärnä, Petri Sulasalmi, Mika Järvinen, Ville-Valtteri Visuri, Seppo Ollila, Timo Fabritius
Publikováno v:
Metallurgical and Materials Transactions B. 47:3544-3556
This paper proposes a novel method for modeling the reduction stage of the CAS-OB process (composition adjustment by sealed argon bubbling–oxygen blowing). Our previous study proposed a model for the heating stage of the CAS-OB process; the purpose
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75f8f09bbfa8f9862ca269f4a133f54d
https://doi.org/10.1007/s11663-016-0769-8
https://doi.org/10.1007/s11663-016-0769-8
Autor:
Aki Kärnä, Petri Sulasalmi, Eetu-Pekka Heikkinen, Timo Fabritius, Pauli Torvinen, Juha Koskinen, Ville-Valtteri Visuri
Publikováno v:
steel research international. 91:2000054
Stainless steelmaking produces different types of slags which need to be cooled, stored, and pretreated before further use. In current practice, the slag is cooled in an air atmosphere, but water cooling has been envisaged to speed up cooling. The ai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a10e3b89967d412005771a9b0c291f3e
https://doi.org/10.1002/srin.202000054
https://doi.org/10.1002/srin.202000054
Autor:
Aki Kärnä, Petri Sulasalmi, Ville-Valtteri Visuri, Eetu-Pekka Heikkinen, Timo Fabritius, Cataldo De Blasio, Mika Järvinen
Publikováno v:
ISIJ International. 56:1543-1552
The objective of this paper was to present a new law of mass action based rate expression for mass transfer limited reversible reactions. A simple reaction model was derived for parallel oxidation of silicon,chromium and carbon under conditions relev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4814a69ad1e963c2172194d459c0da5f
https://doi.org/10.2355/isijinternational.isijint-2016-241
https://doi.org/10.2355/isijinternational.isijint-2016-241
Publikováno v:
STEEL RESEARCH INTERNATIONAL. 86(11):1370-1378
While many metallurgical processes involve the use of top lances, little is known about the heat and mass transfer coefficients of such instruments due to difficulties in measurement procedures. This paper presents a new gas heat and mass transfer co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37572595877f56e1e93be38ba97b010c
https://doi.org/10.1002/srin.201400206
https://doi.org/10.1002/srin.201400206
Publikováno v:
steel research international. 86:212-222
Computational fluid dynamics (CFD) simulations have been carried out to study interfacial velocity and its effect on slag emulsification at the steel–slag interface. The multiphase volume of fluid (VOF) method was used to track the interface betwee
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88df3bb58be3bc20f789794297833cd4
https://doi.org/10.1002/srin.201400026
https://doi.org/10.1002/srin.201400026
Autor:
Mika Järvinen, Aki Kärnä, Petri Sulasalmi, Sauli Pisilä, Timo Fabritius, Ville-Valtteri Visuri, Eetu-Pekka Heikkinen
Publikováno v:
Materials Science Forum. 762:236-241
This paper summarizes and discusses our recent work on modelling of several steelmaking processes. The work started by developing a detailed sub-model for a single gas bubble reacting in liquid steel. The key feature in this model was an approach bas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b33ae8d1a186d187bd7e778bb4f3189f
https://doi.org/10.4028/www.scientific.net/msf.762.236
https://doi.org/10.4028/www.scientific.net/msf.762.236
Publikováno v:
Materials Science Forum. 762:686-690
Numerical models of steelmaking processes are essential tools for process development and optimisation. A usable model is detailed enough to provide reliable results and not to slow to run. In order to make a fast and accurate model of a single proce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d52124e1e3065681fd0ffce78b44d8a5
https://doi.org/10.4028/www.scientific.net/msf.762.686
https://doi.org/10.4028/www.scientific.net/msf.762.686
