Treatment of aluminium dust by aqueous dissolution

Authors

  • F. A. López Dpto. Metalurgia Primaria y Reciclado de Materiales. Centro Nacional de Investigaciones Metalúrgicas. CSICes
  • J. Medina Dpto. de Física de la Materia Condensada, Cristalografía y Mineralogía. Facultad de Ciencias. Universidad de Valladolid
  • H. Tayibi Dpto. Metalurgia Primaria y Reciclado de Materiales. Centro Nacional de Investigaciones Metalúrgicas. CSIC
  • C. Peña Dpto. Metalurgia Primaria y Reciclado de Materiales. Centro Nacional de Investigaciones Metalúrgicas. CSIC
  • A. López-Delgado Dpto. Metalurgia Primaria y Reciclado de Materiales. Centro Nacional de Investigaciones Metalúrgicas. CSIC

DOI:

https://doi.org/10.3989/revmetalm.2004.v40.i5.294

Keywords:

Aluminium dust, hazardous residue, hydrolysis, evolved gases, reactivity.

Abstract


Aluminium dust from aluminium remelting industry is a hazardous residue because of its high reactivity in the presence of water. In order to apply the new European Directive about landfill of waste, a study of its hydrolysis was carried out. The influence of temperature, time and pH on the hydrolysis of the aluminium dust was studied. The hydrolysed solids were characterized by XRD and AAS; in the aqueous solutions the pH and the ionic conductivity were determined. The evolved gases were analysed by mass spectrometry. The reactivity of the dust, before and after hydrolysis, was investigated by analysing the ammonia, hydrogen sulphide and metallic aluminium. By hydrolysis at 60 °C and 48 h a much lower reactive material was obtained which could be disposed with minimal environmental impact.

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Published

2004-10-30

How to Cite

López, F. A., Medina, J., Tayibi, H., Peña, C., & López-Delgado, A. (2004). Treatment of aluminium dust by aqueous dissolution. Revista De Metalurgia, 40(5), 389–394. https://doi.org/10.3989/revmetalm.2004.v40.i5.294

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