dc.contributor | Douglas Batista Mazzinghy | |
dc.contributor | http://lattes.cnpq.br/6028428212680670 | |
dc.contributor | Alizeibek Saleimen Nader | |
dc.contributor | Giorgio Francesco Cesare de Tomi | |
dc.contributor | Ricardo Alves da Silva | |
dc.contributor | Carlos Enrique Arroyo Ortiz | |
dc.contributor | Leandro de Vilhena Costa | |
dc.creator | Jônatas Franco Campos da Mata | |
dc.date.accessioned | 2023-02-15T17:00:42Z | |
dc.date.accessioned | 2023-06-16T16:55:58Z | |
dc.date.available | 2023-02-15T17:00:42Z | |
dc.date.available | 2023-06-16T16:55:58Z | |
dc.date.created | 2023-02-15T17:00:42Z | |
dc.date.issued | 2022-09-22 | |
dc.identifier | http://hdl.handle.net/1843/50088 | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/6684048 | |
dc.description.abstract | Strategic mine planning is critical to the success of a mining project. Global optimization
is a methodology derived from Direct Block Scheduling (DBS), presenting formulations
capable of presenting the final pit and mine sequencing in a single step. In the literature,
there are few studies that consider the geometallurgical variable comminution specific
energy in mine planning. The use of this variable allows greater reliability in decision
making, as the rock hardness influences the operational costs. The research developed a
methodology for the use of the comminution specific energy. Six scenarios were
developed: A1, A2 and A3, which used the Marvin block model; B1, B2 and B3, built
using a model owned by BNA Mining Solutions. A1 detailed strategies to maximize the
Net Present Value (NPV) and meet the operational constraints of the deposit. The A3
scenario obtained gains in NPV and production of 9.66% and 5.18%, respectively,
compared to A2 due to ore stockpiles and fixed mass movement for different periods. The
B2 scenario, that considered geometallurgical variables, found lower NPV and production
results in, respectively, 13.57% and 6.97% were compared to scenario B1, where such
variables were not taken into account, resulting in low reliability and adherence to
operational reality. On the other hand, B3 obtained gains of 5.84% in NPV and 5.45% in
production compared to B2, due to the use of ore stockpiles and fixed mass movement
ranges in certain periods. | |
dc.publisher | Universidade Federal de Minas Gerais | |
dc.publisher | Brasil | |
dc.publisher | ENG - DEPARTAMENTO DE ENGENHARIA METALÚRGICA | |
dc.publisher | Programa de Pós-Graduação em Engenharia Metalúrgica, Materiais e de Minas | |
dc.publisher | UFMG | |
dc.rights | http://creativecommons.org/licenses/by-nc-nd/3.0/pt/ | |
dc.rights | Acesso Aberto | |
dc.subject | Planejamento estratégico de lavra | |
dc.subject | Energia específica | |
dc.subject | Sequenciamento direto de blocos | |
dc.subject | Otimização global | |
dc.title | Metodologia para utilização da energia específica de cominuição no planejamento de lavra | |
dc.type | Tese | |