International Journal of Metalcasting

, Volume 8, Issue 3, pp 13–22 | Cite as

Studies of a Quenched Cupola

  • Ricardo E. Aristizábal
  • Paula A. Pérez
  • Seymour Katz
  • Mark E. Bauer


Cupola furnace operation is among the most complex processes employed in the foundry. In the past, the inner processes of the cupola have been inferred from the inputs and the outputs of the furnace. The lack of experimental information related to the internal conditions of the cupola has left unanswered questions related to important processes, such as: the oxidation of iron and alloying elements, slag formation, iron carburization and coke behavior. In order to obtain needed experimental information of the internal cupola processes a lined, 310mm (12″) internal diameter cupola furnace was quenched with water while in full operation. Afterward the materials inside were carefully removed and analyzed using a variety of characterization techniques.1–4 The quenching experiment provided a large amount of valuable information, which has provided a better understanding of the internal cupola processes. It is hoped that this study will generate ideas for the improvement of cupola performance which include cost and energy savings as well as the reduction of carbon emissions. This paper summarizes the most important findings of the quenched cupola experiment.


cupola furnace foundry coke carburization coke crystallinity alloy oxidation 


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  1. 1.
    Aristizabal, R.E., Silva, C.M., Perez, P.A., Katz, S., “Studies of a Quenched Cupola Part I: Overview of Experimental Studies,” AFS Transactions, vol. 117, pp. 681–691 (2009).Google Scholar
  2. 2.
    Aristizabal, R.E., Silva, C.M., Perez, P.A., Stanek, V., Katz, S., “Studies of a Quenched Cupola Part II: The Behavior of C, Si, Mn and S in the Metallic Charge,” AFS Transactions, vol. 117, pp. 693–708 (2009).Google Scholar
  3. 3.
    Aristizabal, R.E., Silva, C.M., Perez, P.A., Katz, S., “Studies of a Quenched Cupola Part III: Behavior of Silicon Carbide and Slags,” AFS Transactions, vol. 117, pp. 709–725 (2009).Google Scholar
  4. 4.
    Aristizabal, R.E., Perez, P.A., Machado, H.D., Perez, A.M., Katz, S., “Studies of a Quenched Cupola Part IV: Coke Behavior,” AFS Transactions, vol. 121, pp. 475–485 (2013).Google Scholar
  5. 5.
    AFS, Cupola Model, Simulation Software USA, Developed by V. Stanek (2010).Google Scholar
  6. 6.
    Walton, W.H., “Feret’s Statistical Diameter as a Measure of Particle Size,” Nature, vol. 162, pp. 329–330 (1948).CrossRefGoogle Scholar
  7. 7.
    Johnson, J.J., Katz, S., “An X-Ray Diffraction Method for the Determination of Temperatures in Coke Reactions,” Advances in X-Ray Analysis, Plenum Publishing Corp., vol. 28 (1985).Google Scholar
  8. 8.
    Gupta, S., Sahajwalla, V., Burgo, J., Chaubal, P., Youmans, T., “Carbon structure of coke at high temperatures and its influence on coke fines in blast furnace dust,” Metall. Mater. Trans. B., vol. 36, issue 3, pp. 385–394 (2005).CrossRefGoogle Scholar
  9. 9.
    Wu, C., Wiblen, R., Sahajwalla, V., “Influence of ash on mass transfer and interfacial reaction between natural graphite and liquid iron,” Metall. Mater. Trans. B., vol. 31, issue 5, pp. 1099–1104 (2000).CrossRefGoogle Scholar
  10. 10.
    Lu, L., Sahajwalla, V., Harris, D., “Coal char reactivity and structural evolution during combustion — factors influencing blast furnace pulverized coal injection operation,” Metall. Mater. Trans. B., vol. 32, issue 5, pp. 811–820 (2011).CrossRefGoogle Scholar
  11. 11.
    Gupta, S., Al-Omari, Y., Sahajwalla, V., French, D., “Influence of carbon structure and mineral association of coals on their combustion characteristics for pulverized coal injection (PCI) application,” Metall. Mater. Trans. B., vol. 37, issue 3, pp. 457–473 (2006).CrossRefGoogle Scholar
  12. 12.
    Khanna, R., McCarthy, F., Sun, H., Sahajwalla, V., Simento, N., “Dissolution of carbon from coal-chars into liquid iron at 1550°C,” Metall. Mater. Trans. B, vol. 36B, pp. 719–729 (2005).CrossRefGoogle Scholar

Copyright information

© American Foundry Society 2014

Authors and Affiliations

  • Ricardo E. Aristizábal
    • 1
  • Paula A. Pérez
    • 1
  • Seymour Katz
    • 2
  • Mark E. Bauer
    • 3
  1. 1.Department of Metallurgical and Materials Engineering, GIPIMMEUniversity of AntioquiaMedellínColombia
  2. 2.S. Katz AssociatesBloomfieldUSA
  3. 3.General MotorsSaginawUSA

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