2006•China Nonferrous MetallurgyRequires access
Experimental investigation on chloride leaching of chalcopyrite
Wan Xin-ju
Open publisher page 0 citations
Abstract
This paper describes the experimental investigation on mechanism of nitric-acid catalyzing and oxidizing and chloride leaching of chalcopyrite and exploration on factors that affect the oxidizing and leaching reactions. The investigation results show that the optimum conditions for catalyzing and oxidizing with nitric acid lie in a acidity of 0.50 mol/L, a temperature of 95 ℃ and a nitric acid ratio of 0.5-1.0%. By adopting this new separation process with leaching and oxidizing, the copper leaching rate can reach 97% and iron removal efficiency by oxidizing reach 97% within 4.5 hours, thus achieving overall optimization of chalcopyrite leaching.