, Volume 24, Issue 4, pp 563-570

Leaching of Cu2O with aqueous solution of sulfur dioxide

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

Abstract

Leaching of Cu2O with aqueous SO2 solution is significant, since during the dissolution process, precipitation of copper as Chevreul’s salt also takes place under appropriate conditions. The dissolution is controlled by surface reactions and proceeds through both aqueous SO2 and acid dissolution paths. An overall rate equation based on the above premise has been found to agree well with the experimental data. At pH values higher than 1.8, precipitation of copper as Chevreul’s salt takes place after about 10 minutes of leaching. The extent of the precipitation depends upon the pH, SO2 concentration, initial Cu2+ concentration, and sulfate concentration in the leaching solution.