Chemistry of Leaching Processes

The following sections are included:

• Introduction

• Leaching of Oxides and Silicates

  • Reactions of Oxides not Involving Oxidation or Reduction

  • Reactions of Oxides Involving Oxidation

  • Electrochemical Model for the Oxidation Leaching of Uranium Dioxide

  • Leaching of Silicates

• Leaching of Sulphides

  • Thermodynamics of the Metastable S–H₂O System

  • Leaching of Iron-Containing Sulphides in Alkaline Solutions

  • Oxidative Leaching of Chalcocite in Acidic Solutions

  • Oxidative Leaching of Bornite in Acidic Solutions

  • Oxidative Leaching of α-Chalcopyrite and Mooihoekite (γ-Chalcopyrite) in Acidic Solutions

  • Diffusion of Cations in Copper-Containing Sulphides