Distribution of lead and silver under lead blast furnace conditions

Authors

  • M. Pérez Metallurgy and Materials Department, IPN-ESIQIE, UPALM
  • A. Romero Metallurgy and Materials Department, IPN-ESIQIE, UPALM
  • A. Hernández Metallurgy and Materials Department, IPN-ESIQIE, UPALM
  • I. Almaguer Servicios Administrativos Peñoles S.A.
  • R. Benavides Servicios Administrativos Peñoles S.A.

DOI:

https://doi.org/10.3989/revmetalm.1150

Keywords:

Slag, Lead, Silver, Lead blast furnace, Solubility

Abstract


Two experimental studies of metal solubility in slags were carried out at 1473 K (1200 °C). In the first one the solubility of lead in the PbO-ZnO-CaO-SiO2-“Fe2O3” slag system under a reducing atmosphere (PCO/PCO2 = 2.45) was studied. In the second part, slags of the CaO-SiO2-“Fe2O3” system were equilibrated with Pb - 1.3 mass % Ag alloys under an inert atmosphere. In both cases the CaO/SiO2 mass ratio was from 1.0 to 1.6 and Fe/SiO2 mass ratio was 1.1 and 1.7. The lead solubility in the slags of both experimental parts diminishes with increasing the slag basicity (CaO/SiO2) and diminishing the Fe/SiO2 ratio. Lead oxide is the only compound that can be reduced under the reducing atmosphere and at the temperature at the tuyeres level, 1473 K. Silver solubility in slags decreases with increasing both CaO/SiO2 and Fe/SiO2 ratios in the slags of the CaO-SiO2-“Fe2O3” system.

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References

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Published

2012-06-30

How to Cite

Pérez, M., Romero, A., Hernández, A., Almaguer, I., & Benavides, R. (2012). Distribution of lead and silver under lead blast furnace conditions. Revista De Metalurgia, 48(3), 213–222. https://doi.org/10.3989/revmetalm.1150

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