Printed circuit board (PCB) is the essential part of electronic devices and has an important
source of base and precious metals with high economic potential. In this study, selective …

Cyanide tailings are the hazardous waste discharged after gold cyanidation leaching. The
recovery of gold and iron from cyanide tailings was investigated with a combined direct …

Production of gold from copper-rich gold ores has received particular attention due to some
technical and economic challenges associated with the ready dissolution of most copper …

In recent years, the demand for silver has increased due to its use in green technologies
such as photovoltaic cells and electric vehicles (EVs). Due to environmental concerns …

The green transition's push for electrification has substantially increased the demand for
copper, making it a critical raw material. This extravagant demand has made it profitable to …

In the current study, the leaching conditions of chalcopyrite/pyrite concentrate were
optimized by sulfuric acid and hydrogen peroxide using response surface methodology …

The production of gold from refractory gold ores has been increasing due to the exhaustion
of free milling gold ores. The presence of cyanicides (eg, copper minerals) and …

Recovery of gold from copper-rich gold ores has proved challenging. Dissolved copper in
cyanide-deficit leach solutions severely interferes with adsorption of gold resulting in low …

The green transition's push for electrification has substantially increased the demand for
copper, making it a critical raw material. This extravagant demand has made it profitable to …

Abstract ENGLISH SUMMARY: In South Africa, particularly in the Witwatersrand area where
mining has occurred since 1886, there has been a decrease in high–grade, free milling …