Development metallurgy guidelines for copper heap leach

This paper outlines a comprehensive, cost-effective testing program for the acid-ferric sulfate heap leaching of oxide, supergene and primary copper ores. It is based on extensive experience in copper heap leaching and uses the many technological advances in the field developed over the past several decades. The approach described requires firstly a detailed resource characterization for optimal leaching performance, addressing factors such as geology, mineralogy, and hydrodynamics. Diagnostic methods are suggested for evaluating acid consumption, managing the solution, and handling impurities that may affect leaching efficiency. Furthermore, the work showcases the scale-up of laboratory testing procedures to predict performance in field applications, thus ensuring more effective implementation of copper heap leaching projects. By bridging the gap between laboratory results and field experience, this paper aims to facilitate the practical application of heap leaching methodologies, ultimately enhancing project success in copper recovery. It serves as a critical guide for metallurgists and engineers involved in the development and optimization of heap leach operations.