Analyzing furnace-lining integrity using nodal wear modeling

Parra‐Saldívar, Roberto; González, Luis Felipe Verdeja; Barbés, María Florentina; Goñi, Christian; Bazán, Vanesa

doi:10.1007/s11837-005-0148-4

Cited by 11 publications

(10 citation statements)

References 10 publications

(12 reference statements)

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“…By means of the application of the NWM to the PSC, different alternatives to magnesite-chrome bricks may be studied and simulated for the construction of the linings. 8 The first consequences of the research work of the Copper Group in the application of the NWM to the PSC aimed at increasing the number of cycles while maintaining the MgOCr 2 O 3 ெFeO system as the refractory system, are the following: a To situate a carbon product of high conductivity 25-50 Wெm 1 ெK 1 below the working refractory in contact with the steel shell. When increasing the thermal conductivity of the coatings, the nodal temperature drops, T i Fig.…”

Section: Discussionmentioning

confidence: 99%

The Mechanism of Thermal Spalling in the Wear of the Pierce-Smith Copper Converter

Goñi¹,

Barbés

Bazán

et al. 2006

J. Ceram. Soc. Japan

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The Nodal Wear Model NWM constitutes a working tool that may be employed to study the processes of differential corrosion in the Pierce-Smith converter PSC with the aim of achieving significant improvements in duration and productivity of the diverse lining alternatives that may be used. Both knowledge of the wear mechanisms as well as the definition of the corrosion equations are necessary to apply the NWM to the PSC. By means of the NWM, the outputs of corrosion in the tuyere zone of the PSC may be interpreted. The present paper analyzes the wear mechanism for thermal spalling. An equation is proposed which, as well as justifying the damage occasioned in the refractory bricks, it can also be used in the development of new designs.

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Section: Discussionmentioning

confidence: 99%

The Mechanism of Thermal Spalling in the Wear of the Pierce-Smith Copper Converter

Goñi¹,

Barbés

Bazán

et al. 2006

J. Ceram. Soc. Japan

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“…[9][10][11] Via the use of NWM, it is possible to achieve a suitable quantitative interpretation of the advantages and disadvantages that can lead to the presence of a high capacity coolant means in the coldest area of the refractory coating that connects to the installation's steel structure.…”

Section: New Proposalsmentioning

confidence: 99%

“…One fundamental hypothesis of NWM, and which justifies the differentials refractory wears that contact with fused, is that by which the speed of erosion, n eros , depends on the node temperature i, T i , and on the temperature differences that are reached between node, i, and its adjacent node, iϩ1, 9,10) : …”

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confidence: 99%

Results of the Application of the Mdn in the Improvement of the Design of an Electrical Furnace that produces Low Carbon Ferromanganese

et al. 2010

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“…Habitualmente, en los trabajos publicados anteriormente, se utilizaba el MDM para reproducir o justificar la degradación de los revestimientos bajo diferentes situaciones [3], [4] . Ahora, utilizando como punto de partida las variables, T i y h f g-i , se consigue obtener parámetros físicos relevantes relativos a las características del coque y arrabio en el crisol del horno alto.…”

Section: Rev Metal Madrid 45 (4)unclassified

Características sólido-fluido en el crisol del horno alto según el modelo de desgaste nodal (MDN)

Martín¹,

Barbés

Marinas

et al. 2009

Rev. metal.

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R Re es su um me en n La porosidad del coque aparece como unas de las variables que más pueden afectar a la producción de arrabio y a la correspondiente corrosión de los revestimientos. Hasta el momento, en la bibliografía existente sobre la corrosión de los revestimientos, siempre se asocia un mayor desgaste con el correspondiente incremento del flujo del fluido (arrabio) en el crisol. No obstante, no se tiene referencia de ningún modelo determinístico que pudiera relacionar, desde el punto de vista teórico, las siguientes variables: corrosión de los revestimientos, porosidad del coque inactivo y flujo del arrabio en el crisol. El Modelo de Desgaste Nodal (MDN), además de justificar los perfiles de corrosión de los revestimientos a lo largo de la campaña, puede ser un instrumento eficaz para interpretar la porosidad del coque y los gradientes de velocidad del arrabio que se generan dentro del crisol. P Pa al la ab br ra as s c cl la av ve e Horno alto; Crisol; Corrosión de los revestimientos; Porosidad del coque inactivo (hombre muerto).S So ol li id d--f fl lu ui id d c ch ha ar ra ac ct te er ri is st ti ic cs s a at t t th he e b bl la as st t f fu ur rn na ac ce e h he ea ar rt th h a ac cc co or rd di in ng g t to o t th he e n no od da al l w we ea ar r m mo od de el l ( (N NW WM M) ) A Ab bs st tr ra ac ct tThe coke porosity is one of the most important variables that can affect the pig iron production and the lining corrosion. Up to now, the existing bibliography about lining corrosion always connects a deeper wear to an increase in the fluid flow (pig iron) at the blast furnace hearth. However, there is no evidence of any deterministic model that could link, from the theoretical point of view, the following variables: lining corrosion, porosity of dead coke and flow of pig iron at the hearth. Besides justifying the lining corrosion profiles, the Nodal Wear Model (NWM) can be an effective instrument to interpret the coke porosity and the pig iron speed rates that are generated inside the hearth. K Ke ey yw wo or rd ds sBlast furnace; Hearth; Lining corrosion; Porosity of dead coke (dead man). 1. . I IN NT TR RO OD DU UC CC CI IÓ ÓN NCuando se trata de describir los mecanismos de corrosión que pueden desarrollarse en el crisol del horno alto, a lo largo de su campaña operativa, en los trabajos o ponencias especializadas se realizan, habitualmente, las siguientes consideraciones: -Se trata de un fenómeno complejo, en el que intervienen un gran número de variables, por lo que es difícil encontrar una explicación cuantitativa del desgaste que experimentan los materiales a lo largo de la vida operativa del crisol.-Es frecuente, por otra parte, que puedan operar en paralelo diferentes mecanismos de corrosión que dificultan la correcta participación e importancia de cada uno de ellos en el proceso de desgaste del revestimiento. -Se ha intentado siempre reproducir y simular, a escala de laboratorio, las condiciones operativas que pudieran llevarse a cabo en el crisol del horno (con velocidades relativas de circ...

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Analyzing furnace-lining integrity using nodal wear modeling

Cited by 11 publications

References 10 publications

The Mechanism of Thermal Spalling in the Wear of the Pierce-Smith Copper Converter

The Mechanism of Thermal Spalling in the Wear of the Pierce-Smith Copper Converter

Results of the Application of the Mdn in the Improvement of the Design of an Electrical Furnace that produces Low Carbon Ferromanganese

Características sólido-fluido en el crisol del horno alto según el modelo de desgaste nodal (MDN)

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