TY - GEN
T1 - Dissolution of copper and selenium from copper anode slimes
AU - Kilic, Yasin
AU - Timur, Servet
PY - 2011
Y1 - 2011
N2 - In this study, the recovery process of copper and selenium from copper anode slimes, supplied from Sarkuysan Co. in Turkey, has been investigated by employing hydrometallurgical methods under different conditions and parameters. The applied process is composed of three major stages: Characterization of anode slime, decopperization in H2SO4 medium, dissolving selenium in NaOH solution from decopperized anode slimes. The phase composition and chemical analysis of anode slime were determined with X-ray diffraction (XRD) and atomic absorption spectrometry (AAS) methods, respectively. After characterization step, the decopperization of anode slime was performed by utilizing the dissolution technique in H2SO4 medium. The effects of oxygen flow rate and process temperature on the stage of decop-perization were studied. 93.8 % Cu recovery was achieved at a reaction temperature of 80 °C, a flow rate of 2 L/min. oxygen, a stirring speed of 800 rpm, a solid-to-liquid ratio of 1:5, the concentration of 2 M H 2SO4 and the reaction duration of 2 hours. Cu 2Se was detected with the X-ray diffraction technique as a remaining phase of copper in the anode slime after decopperization process. Subsequently, decopperized anode slimes were treated by NaOH solution in order to dissolve selenium. The influences of NaOH concentration, reaction temperature and amounts of KMnO4 additions on the dissolution of selenium were examined. The maximum recovery of 86.8 % selenium was accomplished in 4 M NaOH solution, at reaction temperature of 90 °C, the flow rate of 2 L/min oxygen, a stirring speed of 800 rpm, a solid-to-liquid ratio of 1:10 and in 3 hours of treatment.
AB - In this study, the recovery process of copper and selenium from copper anode slimes, supplied from Sarkuysan Co. in Turkey, has been investigated by employing hydrometallurgical methods under different conditions and parameters. The applied process is composed of three major stages: Characterization of anode slime, decopperization in H2SO4 medium, dissolving selenium in NaOH solution from decopperized anode slimes. The phase composition and chemical analysis of anode slime were determined with X-ray diffraction (XRD) and atomic absorption spectrometry (AAS) methods, respectively. After characterization step, the decopperization of anode slime was performed by utilizing the dissolution technique in H2SO4 medium. The effects of oxygen flow rate and process temperature on the stage of decop-perization were studied. 93.8 % Cu recovery was achieved at a reaction temperature of 80 °C, a flow rate of 2 L/min. oxygen, a stirring speed of 800 rpm, a solid-to-liquid ratio of 1:5, the concentration of 2 M H 2SO4 and the reaction duration of 2 hours. Cu 2Se was detected with the X-ray diffraction technique as a remaining phase of copper in the anode slime after decopperization process. Subsequently, decopperized anode slimes were treated by NaOH solution in order to dissolve selenium. The influences of NaOH concentration, reaction temperature and amounts of KMnO4 additions on the dissolution of selenium were examined. The maximum recovery of 86.8 % selenium was accomplished in 4 M NaOH solution, at reaction temperature of 90 °C, the flow rate of 2 L/min oxygen, a stirring speed of 800 rpm, a solid-to-liquid ratio of 1:10 and in 3 hours of treatment.
KW - Anode slime
KW - Recovery
KW - Selenium
UR - http://www.scopus.com/inward/record.url?scp=84875421981&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84875421981
SN - 9783940276360
T3 - Proceedings - European Metallurgical Conference, EMC 2011
SP - 57
EP - 70
BT - Proceedings - European Metallurgical Conference, EMC 2011
T2 - European Metallurgical Conference, EMC 2011
Y2 - 26 June 2011 through 29 June 2011
ER -