Kinetics of Heterogeneous Reactions in Hydrometallurgy

The following sections are included:

• Rate Controlling Processes

  • Introduction

  • Transport and Chemical Control

  • The Nernst Theory for Transport Control

  • Hydrodynamic Theory for Transport Control

• Experimental Methods for Studying Leaching Kinetics

  • Introduction

  • Use of an Exposed Face of Mounted Solid

  • Use of an Exposed Face of a Rotating Disc

  • Use of Particulate Solid

  • Electrochemical Methods of Following Leaching Reactions Involving Oxidation or Reduction

• Kinetics of Leaching Ground Ores and Concentrates

  • The Problem of Non-uniform Particle Size

  • Equations for Modelling Leaching Kinetics

  • Calculation of the Rate of Dissolution of Zinc Calcine in Dilute Acid Solutions

• Kinetics of Reactions in Which Metals are Precipitated from Solutions by Gases

  • Introduction

  • Reduction of Nickel Salts in Aqueous Solutions by Hydrogen

  • Reduction of Cobalt Salts in Aqueous Solutions by Hydrogen

  • Reduction of Copper (II) Acetate in Aqueous Solutions by Hydrogen

  • Reduction Reactions between Metal Salts and Carbon Monoxide in Hydrometallurgy