Share This Article:

Leaching of Sphalerite with Hydrogen Peroxide and Nitric Acid

Full-Text HTML Download Download as PDF (Size:63KB) PP. 167-177
DOI: 10.4236/jmmce.2006.52012    6,523 Downloads   8,773 Views Citations

ABSTRACT

The leaching of powdered sphalerite using hydrogen peroxide and nitric acid has been investigated. The important variables such as concentrations of hydrogen peroxide and nitric acid as well as stirring speed and particle size were examined. The effect of reaction temperature was also examined on the leaching reaction process. The hydrogen peroxide and nitric acid concentrations have significant effects on the leaching of sphalerite. The leaching of sphalerite is dependent on temperature and stirring speed and inversely proportional on the ore particle size. The apparent activation energy is found to be 28.7kJmol-1 suggesting that the reaction is chemical - control at the surface of the particles.

Cite this paper

A. Adebayo, K. Ipinmoroti and O. Ajayi, "Leaching of Sphalerite with Hydrogen Peroxide and Nitric Acid," Journal of Minerals and Materials Characterization and Engineering, Vol. 5 No. 2, 2006, pp. 167-177. doi: 10.4236/jmmce.2006.52012.

Copyright © 2020 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.