Using microflotation method, this study explored the collectorless flotation of Chalcocite and its dependence on the redox potential of pulp . Electrochemical studies were performed by cyclic voltammetry  in specific potential ranges and at different pH values. The results show that significant floatability of Chalcocite occurs in the specific reducing conditions. By increasing potentials, on t...

Control over the doping density in copper sulfide nanocrystals is of great importance and determines its use in optoelectronic applications such as NIR optical switches and photovoltaic devices. Here, we demonstrate that we can reversibly control the hole carrier density (varying from >1022 cm-3 to intrinsic) in copper sulfide nanocrystals by electrochemical methods. We can control the type of ...

Exploration for copper has long been a focus humankind. Developments in modern technologies have generated even more demand this most useful metal. The cuprous sulphide, chalcocite (Cu--2S)...

kinetics of the chemical leaching of chalcocite from a low-grade copper ore in a ferric sulfate medium was investigated using the constrained least square optimization technique. the experiments were carried out for different particle sizes in both the reactor and column at constant eh, ph, and temperature. the leaching rate increased with increase in the temperature. about 50% of the cu recove...

Field experiments in copper smelting were carried out order to test assumptions about the production processes employed at Vilabouly Complex (VC), an Iron Age extraction and site central Laos. VC is one of only three primary sites known Southeast Asia appears be a major mining locale. Analytical results on assemblage (ores, crucibles, slag fragments alloy objects), along with geological informa...

supergene oxidation-leaching and secondary sulfide enrichment in the sarcheshmeh porphyry cu-mo deposit generated a supergene profile to depths of 20 to 80 meters with oxide ore reserve about 22 mt. @1.08% cu and sulfides ore [email protected]% cu. geochemical distribution and behavior of trace metals associated with cu namely mo, au, and ag in the supergene profile of the sarcheshmeh were po...