H. W. Morse, H. A. Tobelmann
This paper examines the chemical and physical factors governing the leaching of copper ores, with emphasis on mixed oxidized–sulfide ores treated in modern heap and plant operations. It reviews the principal oxidized and sulfide copper minerals of commercial importance and identifies sulfuric acid and acidified ferric sulfate as the most practical solvents, while noting limitations of ferrous sulfate and ammonia-based systems. Controlled laboratory experiments on relatively pure mineral specimens (primarily at 35°C) are summarized to determine dissolution rates, acid consumption, and dissolution mechanisms under varying particle sizes, reagent concentrations, and agitation conditions. Detailed data are presented for key minerals including azurite, malachite, chrysocolla, dioptase, tenorite, cuprite, covellite, chalcopyrite, enargite, tennantite, and tetrahedrite. The study shows that many oxidized minerals dissolve rapidly in sulfuric acid, whereas certain silicates (e.g., dioptase) and sulfides require more stringent conditions or oxidizing agents. These results provide fundamental design and operating guidance for selecting leaching methods and predicting extraction efficiency in commercial copper leaching plants.
@article{a4362f88-a96d-452e-aec1-4445500b993d,
title={Chemical and Physical Features of Copper Leaching},
author={H. W. Morse and H. A. Tobelmann},
year={1926},
language={en}
}TY - JOUR TI - Chemical and Physical Features of Copper Leaching AU - H. W. Morse AU - H. A. Tobelmann PY - 1926 LA - en ER -
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