Diagnóstico mineralógico-metalúrgico y diseño experimental de beneficio para material de mina de la concesión 501423 El Tierrero 2 , distrito minero Nambija.

Abstract

Abstract: The general objective of this thesis was to develop a mineralogical-metallurgical diagnosis of the ore from the "El Tierrero 2" sector, located in the Nambija mining district. This was achieved by applying mineralogical characterization processes, analyzing the particle size distribution of gold, and evaluating recovery methods, with the aim of defining the optimal conditions for ore processing. Mineralogical characterization was performed using X-ray diffraction (XRD), X-ray fluorescence (XRF), and the analysis of thin sections and polished sections. Additionally, particle size analysis and a valued mesh assay were conducted to determine the gold fraction in the different size fractions. Finally, the data obtained were used to evaluate gold recovery through Knelson gravimetric concentration assays and cyanidation leaching. The results obtained confirmed that mineralogy, particle size distribution, and gold liberation percentage directly influence the efficiency of metallurgical processes. Furthermore, the metallurgical balance showed inconsistencies caused by the nugget effect. Therefore, the head grade was recalculated to achieve a more accurate reconciliation of the ore's behavior. It is concluded that the combination of mineralogical characterization and metallurgical assays facilitated the definition of technical criteria for optimizing ore processing and represents a starting point for future research and practices in the Nambija mining district.