Effect of process variables on oxidative pressurized acid leaching of copper electrorefining anode slimes

Extraction of Cu, Ni, As and Te from copper electrorefining anode slimes was studied. Such parameters as sulfuric acid concentration, temperature and oxygen partial pressure had a positive effect on the oxidative pressurized acid leaching in the decreasing order in contrast to the solids concentrati...

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Bibliographic Details
Main Authors: Seisko, Sipi, Aromaa, Jari, Latostenmaa, Petri, Forsen, Olof, Lundstrom, Mari
Format: Conference Proceeding
Language:English
Subjects:
Anode sludge
Arsenic
Copper
Electrorefining
Leaching
Nickel
Parameters
Partial pressure
Pressure effects
Process variables
Regression analysis
Slimes
Solids
Statistical analysis
Sulfuric acid
Sulfuric acid leaching
Tellurium
Temperature effects
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Summary:Extraction of Cu, Ni, As and Te from copper electrorefining anode slimes was studied. Such parameters as sulfuric acid concentration, temperature and oxygen partial pressure had a positive effect on the oxidative pressurized acid leaching in the decreasing order in contrast to the solids concentration. For nickel extraction, temperature, sulfuric acid concentration, combined effect of temperature and sulfuric acid concentration as well as solids concentration and sulfuric acid concentration had a positive effect, in a decreasing order. In the case of arsenic extraction, combined effect of temperature and sulfuric acid concentration, temperature as well as sulfuric acid concentration had positive in the decreasing order. During tellurium extraction, none of the parameters investigated gave the statistically valid response. Basing on the regression analysis, appropriate models for the dissolution of copper and arsenic could be build.
ISSN:2267-1242
2555-0403
2267-1242
DOI:10.1051/e3sconf/20160801006