Estimación de la gravedad específica en el proyecto Coroccohuayco - Tintaya - Cusco

Abstract

The objective of this study is to evaluate and classify more accurately the quality of material and undermine an important parameter is the Specific Gravity, so the importance of knowing the best distribution of Specific Gravity in the block model project Coroccohuayco. The Coroccohuayco project has a complex geology and has great variability in Specific Gravity values in the respective domains of estimation. This study was conducted using data from samples of drill core, was revised and modified the systematic sampling of determining the Specific Gravity for domain estimation (considered lithology, alteration and mineralization), methods of determination of Gravity Specific (Jolly and Paraffin method) assurance and quality control (QA / QC). To perform the step of estimating the Specific Gravity is included a database and lithology model, validated respectively. Data analysis (EDA) was performed to determine the distribution and behavior of Specific Gravity, which is mainly, controlled by the lithology of the reservoir, secondarily alteration and mineralization. With the results of EDA estimation domains, which were used in this study was defined. Variographic analysis and modeling was performed (correlogramas was used) for each of the domains of estimation. This process is performed by using the Supervisor V8.1 software. Types of interpolators which was used for each estimation domain (inverse distance and ordinary kriging), the software was used Minesight was also defined. The types of variance were used validations visual validation, correction and graphics drift volume. With the results obtained, the correct distribution of the Specific Gravity of the block model for each domain, Coroccohuayco project estimation is known. The values of the Specific Gravity of blocks, product estimation, helps geometallurgical models that considered key parameters as rock, tonnage, grade and hardness more reliable as the Specific Gravity is an important parameter for geometallurgy. Tonnage values obtained from the different types of material to mine are closer to the real, thus reporting tonnage resource estimate - law and report the value of refined copper to be issued will be more real and reliable. This estimate of the Specific Gravity assists the Office of Planning to be closer to reality at different stages of project planning Coroccohuayco results.