TY  - JOUR
TT  - Electrochemical Behavior of Chalcopyrite In Acidic Solutions
AU  - Gök, Özge
AU  - Güler, Erkan
AU  - Seyrankaya, Abdullah
PY  - 2012
DA  - July
JF  - MT Bilimsel
PB  - Mayeb Basın Yayın İnsan Kaynakları Ltd. Şti.
WT  - DergiPark
SN  - 2146-9431
SP  - 35
EP  - 47
IS  - 2
KW  - Atmosferik liç
KW  - kalkopirit
KW  - metal-eksikli sülfürler
KW  - yüzey pasivasyonu
N2  - The copper production usually involves subjecting the sulfudic flotation concentrates to smelting. Recently due to increase in environmental limitations and impurities in ore formation, hydrometallurgical routes are preffered as an alternative to pyrometallurgical processes. The copper hydrometallurgical investigations have been made since 1970’s. Despite reasonable technical success, the process was not proved economically. Since then the integration of solvent extraction and electrowinning technology has led to renewed interest in this area in 1990’s. Thus, the detail investigations have been conducted on the complex chalcopyrite ore under atmospheric pressure to elucidate the reaction mechanism, formation of intermediate sulfides and their effects on leach kinetics. In this study, the compilation of the studies including various observations and outcomes, are presented. The general conclusion is that the electrode potential, temperature and concentration ratio of Fe3+/Fe2+ are responsible for the formation of metaldeficient sulfides on mineral surface. These species hinder the dissolution rate by preventing the ion diffusion through the mineral surface. The methods applied to overcome this drawback are also discussed in the present study
UR  - https://dergipark.org.tr/tr/pub/mtb/article/354950
L1  - https://dergipark.org.tr/tr/download/article-file/366561
ER  -