publication . Conference object . 1998

Recovery of copper and precious metals from chalcopyrite low grade ores - choice between flotation or microorganisms leaching

Krstev, Boris; Golomeov, Blagoj; Konzulov, Gerasim; Gocev, Zivko;
Open Access
  • Published: 01 Jan 1998
  • Country: Former Yugoslav Republic of Macedonia
Abstract
The conventional flotation technologies cannot provide fair results when to applied to very low grade ores or to "refractory" ores. This class include intimate and nonuniform mineral associations, with partialy oxidized minerals and high secondary mineral content and also high soluble salt content, pre-activated minerals because of the excessive permeability of the deposit and of the intense circulation of waters with heavy metal ions etc. Bacterial oxidation as a means to the recovery of metals from sulphidic deposits has been used for thousands of year. One of the major use of biooxidation is the leaching of copper or the liberation of refractory gold where th...
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free text keywords: Other engineering and technologies
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