Tratamiento metalúrgico de los óxidos Waelz mediante lixiviación alcalina utilizando carbonato amónico

  1. Meseguer, V. 1
  2. Lozano, L. J. 1
  3. de Juan, D. 1
  1. 1 Grupo de Investigación INQUICA. Dpto. de Ingeniería Química Cartagena. Universidad de Murcia
Revista:
Revista de metalurgia

ISSN: 0034-8570

Any de publicació: 1997

Volum: 33

Número: 2

Pàgines: 101-112

Tipus: Article

DOI: 10.3989/REVMETALM.1997.V33.I2.868 DIALNET GOOGLE SCHOLAR lock_openAccés obert editor

Altres publicacions en: Revista de metalurgia

Resum

A method to carry out the treatment of the Waelz oxides is proposed, and the principal stages implicated are studied laboratory-scale. The process consists of the oxides leaching with an ammonium carbonate/ammonia solution, followed the recovery of the zinc leached by means of its precipitation as zinc basic carbonate. The process stages that have been studied are: Waelz oxides leaching, loaded leach purification, zinc precipitation, zinc basic carbonate washing and zinc basic carbonate transformation. The designed treatment presents a null environmental impact, and more than 90 % of the zinc contained in the Waelz oxides, as well as 80 % of the copper and cadmium contents could be recovered. Also, the process presents great flexibility as soon as zinc could be recovered in the most convenient form (zinc metal, oxide or salt).