Modelagem e controle em colunas de extração mineral

Abstract

This work seeks to be the main objective to develop a mathematical model that can be used as a tool to control flow in columns of mineral extraction. The model was developed from the analysis of data obtained from leaching tests of oxidized copper ore in mineral extraction columns, and therefore an empirical method. We analyzed the variation of the height of the fluid due to leaching time. Through the application of mathematical elements, in particular the inverse Laplace transform has been possible to develop a model that can be used to control flow in columns, it becomes possible to estimate the optimal time of contact between the fluid and ore leaching. The proposed model will serve as support for future work aimed at exploitation of minerals via leaching, and the sizing of columns of mineral extraction. The results of this study can serve as a basis for future deepen the studies focused on the use of low-grade ores, it is expected to be possible to obtain a reduction in operating costs resulting from the extraction of minerals with these characteristics.