Key features of alumina/magnesia/graphite refractories for steel ladle lining

Resende, W. S.; Stoll, Raphael; Justus, S. M.; Andrade, Ricardo Magnani; Longo, Elson; Baldo, J. B.; Leite, Edson R.; Paskocimas, C. A.; Soledade, L. E. B.; Gomes, Jose Ernane Cardoso; Varela, J. A.

doi:10.1016/s0955-2219(00)00004-2

Cited by 26 publications

(13 citation statements)

References 3 publications

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“…These resulted in the AFT decrease correspondingly. The Ca 2 Al 2 SiO 7 formed in the HS mixed ashes when the CM reached 50%, and the low MP eutectic formation of CaAl 2 Si 2 O 8 and Ca 2 Al 2 SiO 7 (MP: 1265 °C) made the AFT decrease . Furthermore, when P 2 O 5 were in the range of low mass ratio (0–5%), with the increasing P 2 O 5 content, SiO 2 , FeAl 2 O 4 , CaAl 2 Si 2 O 8 , and Ca 2 Al 2 SiO 7 might react with phosphorous minerals, and led to the formation of amorphous matter, which made the AFT decrease further.…”

Section: Resultsmentioning

confidence: 99%

Investigation on Ash-Fusion Characteristics of Livestock Manure and Low-Rank Coals

Zhao

Fan

et al. 2020

Energy Fuels

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Large amounts of livestock manure are produced annually, and cogasification offers a promising method for large-scale and clean use of manure. To investigate the ash-fusion characteristics (AFC) of livestock manure and coal, and their variation mechanisms, the AFCs of two coals (Yima long-flame coal and Husheng lignite), two manures (cattle manure (CM), and swine manure (SM)), and their mixtures were explored. An increase in the ash mass ratio of the CM or SM increased the sintering temperature (T s) of two mixed coal ashes (the SM enhanced the T s more than that of the CM); however, their ash-fusion temperature (AFT) decreased first and then increased (the turning points for the Yima long-flame coal ash mixture were CM: ∼60% and SM: ∼40%, and those for the Husheng lignite were SM: ∼70% and SM: ∼50%). The T s was induced by partial particle surface fusion, and was related to the formation of a low melting eutectic (e.g., binary systems for K2SiO3–Na2Si2O5 and Na2S–FeS) and their contents. The AFT indicated that the bulk melting property was determined mainly by ash composition, especially for a basic/acid ratio. The disappearance of mullite and the formation of high melting-point phosphates (e.g., KCaPO4, K2CaP2O7, and Ca2.71Mg0.27(PO4)2) resulted in AFT fluctuations of the mixtures.

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Section: Resultsmentioning

confidence: 99%

Investigation on Ash-Fusion Characteristics of Livestock Manure and Low-Rank Coals

Zhao

Fan

et al. 2020

Energy Fuels

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“…These ternary phases are responsible for the appearance of liquid at temperatures near 1250 • C. 8 Meanwhile, the binary phase CS (CaSiO 3 ) was identified in AMC1. This phase involves liquid formation at temperatures higher than 1400 • C. 37 The high SiO 2 concentration close to the aggregates was a consequence of the dissolution of the finest particles in the matrix, being the components with a higher content of silica: bauxite in AMC3 and sintered magnesia in AMC2.…”

Section: Corrosion Testmentioning

confidence: 99%

“…In this sense, the more efficient and sure way to achieve these goals is to have basic information about the corrosion processes and the factors determining them, although these aspects have hardly been explored with regard to these types of refractories. 8,9 In this context, this paper focused on the evaluation of the chemical wear on three commercial AMC bricks with http://dx.doi.org/10.1016/j.jeurceramsoc.2014. 11.024 0955-2219/© 2014 Elsevier Ltd. All rights reserved.…”

Section: Introductionmentioning

confidence: 99%

Chemical wear of Al 2 O 3 –MgO–C bricks by air and basic slag

Muñoz

Galliano

Brandaleze

et al. 2015

Journal of the European Ceramic Society

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“…• Desarrollo de un refractario basado en MgO-C, para uso en la línea de escoria de cucharas de acero (9) .…”

Section: Otros Proyectos Realizadosunclassified

Innovaciones en la gestión y calidad de los revestimientos refractarios en la Compañía Siderúrgica Nacional (Brasil)

Justus¹,

Andrade²,

Silva³

et al. 2002

Bol. Soc. Esp. Ceram. Vidr.

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El trabajo describe acciones realizadas en conjunto entre la Compañía Siderúrgica Nacional -(CSN)-Brasil y el Laboratorio Interdisciplinar de Electroquímica y Cerámica -LIEC de la Universidad Federal de Sao Carlos Brasil (UFSCar) -Brasil, en el área de I&D, para la gestión y mejora de la calidad de los revestimientos refractarios en las áreas de sinterización, hornos altos, líneas de trasferencia de aire caliente al horno alto, piqueras de arrabio, canales de colada, crisoles de horno alto, cucharas torpedo, etc., así como, el impacto económico generado por la implantación de las medidas adoptadas. The work describes actions carried out in colaboration among the National Steel Company -(CSN)-Brazil and the Interdisciplinary Laboratory of Electrochemistry and Ceramic -LIEC of the Federal University of Sao Carlos Brazil (UFSCarBrazil), in the area of I&D, for integral management and improvement of the quality and performance of the refractory linings in the sintering areas, blast furnace, hot air pipe lines transferency to the blast furnace, pig-iron ladles, running channels, blast furnaces hearths, torpedo car, etc., as well as, the economic impact generated by the installation of the adopted measures. INTRODUCCIÓNLa producción de acero a escala mundial, sigue aumentando lentamente, a pesar de las dificultades y crisis surgidas en algunas importantes zonas productoras, particularmente en el área del Pacífico. La tendencia global en la siderurgia mundial (con mayor énfasis en la Unión Europea), ha sido hacia la reducción progresiva de costos e incremento de la productividad. En todo caso este proceso sólo es posible si va acompañado de una mejora en el rendimiento de los materiales refractarios utilizados. Los refractarios requeridos deben poseer tres cualidades esenciales: elevada resistencia ante la corrosión, buenas propiedades termomecánicas y costo reducido. El desarrollo de materiales teniendo en cuenta estos factores de modo equilibrado exige un conocimiento profundo de los procesos de desgaste de cada tipo de material en cada instalación siderúrgica, con objeto de poder dimensionar y planificar correctamente la composición química, mineralógi-ca y microestructural de los mismos (1)(2)(3)(4)(5) . La Compañía Siderúrgica Nacional-CSN, es la empresa precursora de la industrialización del Brasil, ya que inició en 1946 la producción doméstica de acero a larga escala, y es actualmente, el mayor complejo siderúrgico integrado de América Latina. Posee yacimientos mineros, unidades industriales, vías férreas y puertos propios para la realización de sus operaciones. Actualmente es el complejo siderúrgico líder en el mercado brasileño, con una capacidad de producción de 5 millones de toneladas anuales de acero bruto. En su planta industrial (Usina Presidente Vargas) en Volta Redonda, Estado de Rio de Janeiro, esta empresa produce laminados a frío y en caliente, galvanizados y chapas metálicas para atender a la industria automotriz, de construcción civil, embalaje de utilidades domésticas, de máquinas y equipos, tubo...

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Key features of alumina/magnesia/graphite refractories for steel ladle lining

Cited by 26 publications

References 3 publications

Investigation on Ash-Fusion Characteristics of Livestock Manure and Low-Rank Coals

Investigation on Ash-Fusion Characteristics of Livestock Manure and Low-Rank Coals

Chemical wear of Al 2 O 3 –MgO–C bricks by air and basic slag

Innovaciones en la gestión y calidad de los revestimientos refractarios en la Compañía Siderúrgica Nacional (Brasil)

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