Sudário, Flávia Emery PereiraLuz, José Aurélio Medeiros da2015-04-132015-04-132012SUDÁRIO, F. E. P.; LUZ, J. A. M. da. Modelling of binary mixture comminution. Latin American Applied Research, v. 42, p. 177-184, 2012. Disponível em: <http://www.laar.uns.edu.ar/indexes/artic_v4202/Vol42_02_177.pdf>. Acesso em: 06 mar. 2015.1851-8796http://www.repositorio.ufop.br/handle/123456789/5057This paper treats on grindability differences of mineral mixtures to achieve a preliminary selective particle size contrast by comminution in order to improve further sorting operation. Quartz and calcite had been chosen as example of binary system. The theoretical basis for this work was inspired by the optimization study carried out by Ray and Szekely (1973), through an algebraic model based on evolution of log-normal distribution of particle size during comminution. On the other hand, the present work has described grindability differences through the classical Rosin-Rammler size distribution. The study of the evaluation of binary mixture differences was realized by sieving analyses and the estimation of Rosin-Rammler sharpness and median diameter. An objective function was conceived stressing the relationship between the expended energy in the grinding process and the optimum residence time. It is possible to use the results as a background for grinding optimization system, since that the penalty function inside objective function can be adequately calibrated as far as technical and economic impacts on further sorting separations are concerned.en-USGrindabilityGranular mediaRosin-RammlerUnit operationsArtigo publicado em periodicoO periódico Latin American Applied Research permite que o Repositório Institucional da Universidade Federal de Ouro Preto (UFOP) deposite uma cópia eletrônica dos artigos publicados por esse periódico em que ao menos um dos autores faça parte da comunidade cientifica da UFOP. Fonte: Licença concedida mediante preenchimento de formulário em 11 mar. 2015.