A CFD model for estimating refractory erosion and skull buildup in the blast furnace hearth

Lei Shao, Shan Yu, Seppo Louhenkilpi, Zong Shu Zou, Henrik Saxén

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference contributionScientificvertaisarvioitu

2 Sitaatiot (Scopus)

Abstrakti

It has been widely recognized that refractory wear and skull buildup play the biggest role in determining hearth durability and thus the campaign life of an ironmaking blast furnace. Studies have been mainly carried out either by addressing an inverse heat conduction problem without considering the effect of liquid flow within the hearth, or by utilizing a computational fluid dynamics (CFD) model in which skull formation is neglected or highly simplified. The present investigation aims at making use of the advantages of both approaches, developing a comprehensive CFD model for estimating the in-hearth refractory erosion and skull buildup. The hearth profile shaped by the liquid pool, solidified skull and remaining refractory are obtained through a customized iterative algorithm on the basis of calculated fluid flow and temperature distribution. The general structure and calculating procedures are described in detail in the paper, where a set of examples is performed to show the applicability and versatility of the model. The results of the model agree well with observations at industrial blast furnaces and the model is demonstrated to predict two erosion types that are commonly encountered in practice. AISTech 2015 Proceedings

AlkuperäiskieliEnglanti
OtsikkoAISTech 2015 - Proceedings of the Iron and Steel Technology Conference and ICSTI 2015
KustantajaAssociation for Iron and Steel Technology (AIST)
Sivut864-877
Sivumäärä14
Vuosikerta1
ISBN (elektroninen)9781935117476
TilaJulkaistu - 2015
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaIron and Steel Technology Conference - Cleveland, Yhdysvallat
Kesto: 4 toukok. 20157 toukok. 2015
Konferenssinumero: 7

Conference

ConferenceIron and Steel Technology Conference
LyhennettäAISTech
Maa/AlueYhdysvallat
KaupunkiCleveland
Ajanjakso04/05/201507/05/2015

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