Study of the removal mechanism of magnesium from Al-Si liquid alloys using silica base minerals injection

Authors

  • R. Muñoz-Arroyo Centro de Investigación y de Estudios Avanzados del IPN
  • J. C. Escobedo-Bocardo Centro de Investigación y de Estudios Avanzados del IPN
  • H. M. Hernández-García Centro de Investigación y de Estudios Avanzados del IPN
  • D. A. Cortés-Hernández Centro de Investigación y de Estudios Avanzados del IPN
  • M. Terrones-Maldonado Instituto Potosino de Investigación en Ciencia y Tecnología
  • A. Rodríguez-Pulido Instituto Potosino de Investigación en Ciencia y Tecnología
  • J. L. Hernández-Piñero Universidad Autónoma de Nuevo León

DOI:

https://doi.org/10.3989/revmetalm.0949

Keywords:

Zeolite, Silica, Aluminum, Magnesium, Minerals

Abstract


In order to eliminate magnesium from an A 380 Al-Si alloy at 750°C, the submerged powder injection method, using an inert carrier gas (Ar), was applied. The injected powders in the liquid aluminum bath were zeolite, silica and mixtures of zeolite-silica minerals. For each experiment the response variables were: eliminated magnesium versus injection time and quantity of drosses produced. Chemical analysis by atomic absorption spectrometry showed that mixtures of silica-zeolite 66:34 wt% have the best results with regarding to the removal magnesium from 1 to 0.0066 wt%. During the elimination of magnesium complex stoichiometry compounds were formed due to the reactions among zeolite, water steam and liquid aluminum. These compounds were analyzed by XRD, SEM and TEM. The results obtained, along with using the FactSage 6 thermodynamic software, allowed to elucidate the reaction mechanism between the minerals used and liquid aluminum.

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References

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Published

2010-08-30

How to Cite

Muñoz-Arroyo, R., Escobedo-Bocardo, J. C., Hernández-García, H. M., Cortés-Hernández, D. A., Terrones-Maldonado, M., Rodríguez-Pulido, A., & Hernández-Piñero, J. L. (2010). Study of the removal mechanism of magnesium from Al-Si liquid alloys using silica base minerals injection. Revista De Metalurgia, 46(4), 351–359. https://doi.org/10.3989/revmetalm.0949

Issue

Vol. 46 No. 4 (2010)

Section

Articles

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