MECHANISMS KNOWLEDGE OF THE FLOW AND WEAR IN THE BLAST FURNACE CRUCIBLE WITH THE NODAL WEAR MODEL
DOI:
https://doi.org/10.7494/mafe.2011.37.2.123Keywords:
blast furnace, hearth, wear, dead manAbstract
The presence of thermocouples in the lining of crucibles has become a general practice in the new construction of blast furnaces. The Nodal Wear Model (NWM) has also emerged as an instrument that, while using experimental data, obtains nodal variables whose experimental measurement is not possible: global coefficient of pig-iron/refractory heat transfer [formula] and nodal temperature Ti. Starting from these nodal properties, the wear of the lining or the growth of scabs may be controlled, independently of the mechanisms responsible for them. In the same way, the properties and influence zone of the dead man in the hearth of the blast furnace may be calculated, along with those regions where the fluid is allowed to move without any other restrictions than the ones of the corresponding viscous flow (raceway hearth region).
Downloads
References
Omori ¥.: Blast furnace phenomena and modelling, Ed. Elsevier, England (1987) 345-352, 395-405
Habashi F. Handbook of Extractive Metallurgy, Metal Industry: Ferrous Metals. Vol. I. Ed. Wiley-VCH, Germany (1997) 57-104
Bennett J.P., Smith J.D.: American Ceramic Society, Ceramic Transactions, 125 (2001) 135-154
ferdeja L.F., Sancho J.P., Ballester A. Materiales Refractarios y Ceramicos, Ed. Sintesis, Madrid (2008) 19-22, 156-176
Rontem M.A., JimenezJ., Mochón J., Menendez J.L., Formoso A., Bueno F: Rev. Metal, Madrid, 36 (2000) 1, 40-46
Parra R., Ferdeja L.F., Barbes M.F., Goni C, Bazdn V:. JOM, 57 (2005) 10, 29-36
Goni C, Barbes M.F., Bazdn V., Brandaleze E., Parra R., Yerdeja L.F.: J. Ceram. Soc. Jpn, 114 (2006) 8, 665-668
Liingen H.B., Riither H.P., Clixby G., Cassella G.: Investigations on blast furnace wear phenomena espe-cially in the heart, European Commission. Technical Steel Research. EUR 19347 EN (2000) 193
Miilheims K., Pritchard W.D.N., Steiler J.M., Schulte M:. Wear blast furnace heart, European Commission. Technical Steel Research. EUR 20109 EN (2002) 272
Sancho J.P., Yerdeja L.F., Ballester A.: Metalurgia Extractiva: Procesos de obtención, Ed. Sintesis, Madrid (2000) 55-74
Zadmi S.A., Yenturni M.J., Sert D.: Rev. Metall-Paris, Journees Siderurgiąues ATS-2002, 99 (2002) 11, 18-19
Havelange O.,Danloy G., Venturini J.M., Pierret H., Riither H.P., Mielenz O., Kóchner H., Alexander J.A., Post J.R., Clixby G.: Determination of coke bed voidage in the blast furnace hearth, European Commission. Technical Steel Research. EUR 20942 EN (2004) 194
Danloy G., Falzetti M., Formoso A., Herfurth E., Vega J. Modeling of gas and char flows at high PCI through experimental and theoretical studies of the raceway and the dead man, European Commission. Technical Steel Research. EUR 20094 EN/DE (2002) 224
Alcock C.B.: Principles of pyrometallurgy, Academic Press, London (1976) 98-99
Ballester A., Yerdeja L.F., Sancho J.P.: Metalurgia Extractiva: Fundamentos, Ed. Sintesis, Madrid (2000) 235-238
Poirier D.R., Geiger G.H.: Transport phenomena in materials processing, TMS, Pennsylvania (1994) 93-98
Jimenez J., Mochon J., Sainz de Ayala J. ISIJ Int., 44 (2004) 3, 518-526
Martin R., Barbes M.A., Barbes M.F., Marinas E., Ayala N., Mochón J., Yerdeja L.F., Garda F. R. Metal, Madrid, 45 (2009) 4, 295-304
Barbes M.F., Barbes M.A., Marinas E., Ferndndez B., Martin R., Mochón J., Verdeja L.F.: Boi. Soc. Esp. Ceram, V., 48 (2009) 3, 153-156