Currently Zaldívar Mine has a mixed production process for obtaining copper, which has a secondary sulfide leaching stage and, in parallel, a flotation of fines from an ore classification before the leaching heaps construction stage.
The mineralogical characterization shows that minerals of the secondary sulfide type are processed and, subordinately, copper oxides. These minerals mostly contain chalcosine > covelin and brochanthite > chrysocolla, respectively. In the future, the processing of primary sulfides containing chalcopyrite > bornite is considered.
The production process of this company does not currently have instrumentation to obtain reliable and online data of the mineral grade at any point of the process (mine, leaching heaps, flotation, dump and dam). This information is relevant for the reconciliation of metallurgical balances, block models and short and medium term planning.
The challenge seeks technological solutions that measure copper grade in the ore at the following points:
Background – Previous experiences
Sampling Tower Installation (CAPEX)
Key performance indicators
Area of interest
Geology Metallurgy Planning
Processes involved Mine:
Crushing – Plant