Investigação de viabilidade técnico-econômica de uma Jazida de ouro, a partir de um modelo de blocos

Abstract

Gold mining has occurred since the dawn of civilization, currently having a wide application, such as use in electronics. Thus, when there is a deposit that can be extracted with this material, it is necessary to have an adequate planning, the maximization of resources, associated with less environmental degradation and operational risk. The objective of this work was to generate cash flow parameters, project the mine's useful life and, finally, to give operational characteristics to the pits generated. In this sense, it was established from a block model provided by Mineração Aricá, from Baixada Cuiabana, a workflow through pre-adjusted algorithms, especially from Lerchs-Grossmann. The software used helped to carry out analyzes of cash flow, cut-off, in addition to operationalization. This happened through parameter and economy entries. The results were translated into two profitable and operational pits with a cut-off of 0.14g /t, and a useful life of 22.11 months, according to the company's production rate and final reserve, after all procedures. It was concluded through the development of the economic parameters and pit geometry, the technical, economic and operational feasibility of the object of study, in addition to providing a basis for mine exhaust planning.