Pressure leaching of copper arsenic-containing mattes with copper sulfate solutions
https://doi.org/10.17073/0021-3438-2015-6-4-9
Abstract
The topicality is shown to improve the processing technology of complex polymetallic raw material containing a considerable amount of toxic impurities of arsenic and lead. Results on pressure leaching the mattes acquired after reduction smelting the dusts of OAO Sredneural’skii Copper Smeltery (SUMZ) by solutions of copper sulfate are discussed. These mattes contain a considerable amount of lead and arsenic. According to the data of X-ray phase analysis of matte samples, phases of sulfides (PbS, PbS·As2S3, Cu2S, FeS, and (Zn,Fe)S) and arsenides (FeAs2, Cu3As, FeAs, and Cu0,85As0,15), as well as inclusions of metallic copper, are revealed in them. Optimal parameters of matte leaching by copper sulfate solutions are the temperature of 150–180 °C, acidity from 5 to 30 g/dm3, and copper concentration of 14–32 g/dm3. This process made it possible to extract 85 % As into the solution, while copper and lead remained in the cake in this case.
Keywords
About the Authors
K. A. Karimov
Уральский федеральный университет (УрФУ) им. первого Президента России Б.Н. Ельцина, г. Екатеринбург
Russian Federation
Russian Federation
Post-graduate Student, Principal Engineer, Department «Metallurgy and heavy non-ferrous metals», Ural Federal University (UrFU) (620002, Russia, Ekaterinburg, Mira str., 19).
S. S. Naboichenko
Уральский федеральный университет (УрФУ) им. первого Президента России Б.Н. Ельцина, г. Екатеринбург
Russian Federation
Russian Federation
Corresponding Member of the RAS, Dr. Sci. (Eng.), Prof., Head of Department «Metallurgy and heavy non-ferrous metals», UrFU
V. I. Neustroev
Уральский федеральный университет (УрФУ) им. первого Президента России Б.Н. Ельцина, г. Екатеринбург
Russian Federation
Cand. Sci. (Eng.), Associate Prof., Department «Metallurgy and heavy non-ferrous metals», UrFU
Russian Federation
Cand. Sci. (Eng.), Associate Prof., Department «Metallurgy and heavy non-ferrous metals», UrFU
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Review
For citations:
Karimov K.A., Naboichenko S.S., Neustroev V.I. Pressure leaching of copper arsenic-containing mattes with copper sulfate solutions. Izvestiya. Non-Ferrous Metallurgy. 2015;(6):4-9. (In Russ.) https://doi.org/10.17073/0021-3438-2015-6-4-9
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