Lixiviación de metales pesados a partir de escorias de acero

J. F. P Gomes; C. G. Pinto

doi:10.3989/revmetalm.2006.v42.i6.39

Leaching of heavy metals from steelmaking slags

Authors

J. F. P Gomes Centro de Tecnologias Ambientais, Instituto de Soldadura e Qualidade, Tagus Park. Universidade Lusófona de Humanidades e Tecnologias
C. G. Pinto Centro de Tecnologias Ambientais, Instituto de Soldadura e Qualidade, Tagus Park

DOI:

https://doi.org/10.3989/revmetalm.2006.v42.i6.39

Keywords:

Steelmaking slags, Leaching tests, Environmental impact

Abstract

Leaching tests with EAF and Ladle slags were performed, using a flow through test and the standard batch test DIN 38414-S4. The previous method was used to simulate the leaching behaviour of steel slags under landfill. The chemical analysis of the leachates during this period shows, in general, for both types of slag, an increase of heavy metal releases with ageing. Standard test method DIN 38414-S4 was used to evaluate leachability of heavy metals by water in unprocessed slags. After more than one year of trials, slag samples submitted to these trials presented very low total leaching levels. The most extracted elements are calcium and magnesium. Nevertheless, in flow-through test, calcium and magnesium leached from solid slags are below 0.5% and all other metals below 0.1%. Leachates obtained with DIN 38414-S4 present, as expected, higher leaching values; however, these are inferior to 5 % (Ca) and 1% (other elements).

Downloads

Download data is not yet available.

References

[1] R. Anigstein, Potential Recycling of Scrap Metal from Nuclear Facilities, Vol.1, Part I, United States Environmental Protection Agency, Raleigh, USA, 2001, pp. 4-1/4-30.

[2] H. Motz, Proc. 3rd European Slag Conference, EUROSLAG Ed., Brussels, Belgium, 2003, pp. 120-123.

[3] R. Miller AND R. Donahue, Soils in Our Environment, 7th Edition, Prentice Hall, London, United Kingdom, 1995, pp. 230-235.

[4] M. Martin, F. López, A. López-Delgado, C. Pérez AND F. Alguacil, Rev. Metal Madrid 41 (2005) 324-328.

[5] M. Martin, F. López and F. Alguacil, Rev. Metal. Madrid 41 (2005) 292-297.

[6] P. Navarro, C. Vargas and F. Alguacil, Rev. Metal. Madrid 41 (2005) 107-110.

[7] P. Navarro, C. Vargas, R. Alvarez and F. Alguacil, Rev. Metal. Madrid 41 (2005) 12-20.

[8] P. Navarro, C. Vargas, E. Araya, I. Martin AND F. Alguacil, Rev. Metal. Madrid 41 (2005) 409-412.

[9] Compendium of Waste Leaching Tests, Report EPS 3/HA/7, Environment Canada, Ottawa, Canada, 1990, pp. 30-40.

[10] Climatologia - Portugal, Instituto de Meteorologia, www.meteo.pt, pp.1.

[11] DIN 38414-S4, Deutsche Norm, Teil 4 Okt, 1984, pp. 464-475,

[12] Summary report on RTD on iron and steel slag: Development and perspectives, European Commission, Brussels, Belgium, 1999, pp. 10-20.

Downloads

Published

2006-12-30

How to Cite

Gomes, J. F. P., & Pinto, C. G. (2006). Leaching of heavy metals from steelmaking slags. Revista De Metalurgia, 42(6), 409–416. https://doi.org/10.3989/revmetalm.2006.v42.i6.39

Download Citation

Issue

Vol. 42 No. 6 (2006)

Section

Articles

License

This work is licensed under a Creative Commons Attribution 4.0 International License.

© CSIC. Manuscripts published in both the printed and online versions of this Journal are the property of Consejo Superior de Investigaciones Científicas, and quoting this source is a requirement for any partial or full reproduction.

All contents of this electronic edition, except where otherwise noted, are distributed under a “Creative Commons Attribution 4.0 International” (CC BY 4.0) License. You may read the basic information and the legal text of the license. The indication of the CC BY 4.0 License must be expressly stated in this way when necessary.

Self-archiving in repositories, personal webpages or similar, of any version other than the published by the Editor, is not allowed.