Radomiro Tomic Division, Codelco
Calama, 2,500 metres above sea level, Antofagasta Region.
Pre-feasibility engineering study in the disciplines of mechanical and piping, civil, electrical, instrumentation and control, fire fighting network.
The advances made in Chile in recent years in chloride leaching of copper have allowed a significant development of projects, where the benefits of higher extraction, faster kinetics and lower consumption of sulphuric acid for secondary sulphides, led the Radomiro Tomic Division (DRT) to request Pares&Alvarez a study to develop and identify the modifications needed for the early addition of chloride to a Primary Leaching process.
For the development of this engineering, the business plan and the characteristics of the ore that will enter the plant from the year 2024 were considered, which projects a decrease in copper solubility, so it is necessary to develop this study to review the incorporation in the short term of chloride and thus improve the projected recovery of copper.
Given the above, Pares&Alvarez carried out the engineering to design the chloride addition system in the form of brine and a preliminary diagnosis to determine the maximum chloride concentration at which it can operate in DRT’s hydrometallurgical plant, indicating the materiality changes required in the equipment and piping in the hydrometallurgy plant, due to the projected corrosive conditions.