Solubility and complex formation of gold in geochemical and technological systems at parameters of a hydrothermal process
Application of physical and chemical modeling of gold solubility in hydrothermal solutions for natural objects facilitates managing gold-bearing ore concentration by hydrometallurgy methods at high temperature and pressure. The study shows that to raise efficiency of gold leaching from ores it is appropriate to minimize sedimentation factors (increasing pH, reducing pCО2) and to intensify dissolution factors (increasing T, P, pО2 and varying salt composition of a solution).