Date of Award
Bachelor of Science in Metallurgical Engineering
Doctor C. L. Wilson
Professor J. U. MacEwan
Sulphide ores of copper are insoluble in dilute sulphuric acid leaching solutions, but a very high extraction can be obtained if the copper ore is in the oxidized condition. The problem is to convert the sulphide into the oxide form. This can be done by giving the sulphide ore an oxidizing-sulphatizing roast. Copper sulphate is soluble in water, so acid will be saved in the leaching process if copper sulphate is present. The iron in the copper sulphide ores is present as pyrite, or in combinations as bornite, or chalcopyrite.
Greenough, Jack S., "The Recovery of Copper in Sulphide Ores by Roasting, Leaching, and Electrolysis" (1932). Bachelors Theses and Reports, 1928 - 1970. 21.