Results 31 to 40 of about 277 (107)

Modeling Iron Ore Breakage with the Tavares Model and DEM Simulation of a Laboratory Jaw Crusher

Chemical Engineering &Technology, Volume 48, Issue 7, July 2025.
Physical characteristics, DEM contact and Tavares Breakage parameters were measured for an itabirite iron ore. Comparison of experiments in a laboratory jaw crusher to simulations showed good agreement of throughputs, marginal underpredictions of power, while some overpredicted product fineness.
Alan A.A. Tino, Gabriel K.P. Barrios, Luís Marcelo Tavares   +2 more
wiley   +1 more source

O PAPEL DA DINÂMICA DO RELEVO NA EVOLUÇÃO DE COURAÇAS NO VALE DO RIO CONCEIÇÃO, QUADRILÁTERO FERRÍFERO – MG

Revista Brasileira de Geomorfologia, 2019
Estudos petrológicos utilizando análises macromorfológicas, micromorfológicas, mineralógicas e microquímicas foram realizados para identificar possíveis variações faciológicas de couraças nos distintos níveis deposicionais fluviais do vale da bacia do ...
Wilton Franklin Alves de Figueiredo Filho, Fabio Soares de Oliveira, Luiz Fernando de Paula Barros, Henrique Amorim Machado, Antônio Pereira Magalhães Junior   +4 more
doaj   +1 more source

Application of Zipf’s law to estimate undiscovered gold endowment in the Quadrilátero Ferrífero Province, Brazil

Journal of the Geological Survey of Brazil, 2019
Ore-forming processes act as self-organizing critical systems. These systems exist in an unbalanced nature, such that energy-release can occur as a scale-invariant power-law behavior when a certain threshold is exceeded.
Iago Sousa Lima Costa, Guilherme Ferreira da Silva, Marcos Vinícius Ferreira   +2 more
doaj   +1 more source

MORFOGÊNESE NO QUADRILÁTERO FERRÍFERO/MG NO QUATERNÁRIO SUPERIOR: PROCESSOS FLUVIAIS E CONDICIONANTES PALEOAMBIENTAIS NA BACIA DO RIO DAS VELHAS

Revista Brasileira de Geomorfologia, 2018
Visando aprofundar a compreensão da geomorfologia regional, diversos levantamentos de níveis e sucessões deposicionais fluviais foram empreendidos no Quadrilátero Ferrífero nas últimas décadas. Entretanto, faltam estudos mais regionalizados, que analisem
Luiz Fernando de Paula Barros, Antônio Pereira Magalhães Junior   +1 more
doaj   +1 more source

Determinação de manganês em presença de ferro: análise de solo por ativação neutrônica instrumental

Revista Brasileira de Ciência do Solo, 2012
A técnica analítica nuclear de ativação neutrônica é multielementar, precisa, exata e, além de outras características, tem sido indicada como técnica primária na determinação elementar principalmente de solo.
Leonardo Alves da Costa, Maria Ângela de Barros Correia Menezes   +1 more
doaj   +1 more source

CARTOGRAPHIC VISUALIZATION OF MORPHOLOGICAL AND HIERARCHICAL RELATIONS IN CITY NETWORKS: A BASIS FOR UNDERSTANDING THE URBAN SYSTEMS OF THE QUADRILÁTERO FERRÍFERO

Revista Brasileira de Cartografia, 2018
The present work investigates the urban agglomerates that compose and structure the urban system of Quadrilátero Ferrífero region, which is part of the peri-metropolitan space of Belo Horizonte.
Alfio Conti, Gustavo Adolfo Tinoco Martínez   +1 more
doaj  

Detrital zircon records of the Paleo-Mesoproterozoic rift-sag Tamanduá Group in its type-section, Northern Quadrilátero Ferrífero, Minas Gerais, Brazil

Brazilian Journal of Geology, 2020
The Quadrilátero Ferrífero metallogenetic province is located in the southernmost portion of the São Francisco craton, SE Brazil. The Tamanduá and Cambotas ridges stand out topographically in the northeastern portion of Quadrilátero Ferrífero and show NE-
Luiz Fernandes Dutra, Sérgio Patusco Dias, Maximiliano Martins, Cristiano Lana, Ana Carolina Batista, Tulio Delôgo Tavares   +5 more
doaj   +1 more source

The advertisement call, color patterns and distribution of Ischnocnema izecksohni (Caramaschi and Kisteumacher, 1989) (Anura, Brachycephalidae)

Papéis Avulsos de Zoologia, 2012
Ischnocnema izecksohni inhabits the gallery forests from the Quadrilátero Ferrífero, Southern Espinhaço range, state of Minas Gerais, southeastern Brazil, and it is considered endemic to this region. Its closest related species is I.
Pedro P. G. Taucce, Felipe S. F. Leite, Patrícia S. Santos, Renato N. Feio, Paulo C. A. Garcia   +4 more
doaj   +1 more source

Sedimentology and chronology of unconsolidated alluvial fans of the Quadrilátero Ferrífero (Central Brazil): implications for landscape dynamics in the Late Quaternary

Revista Brasileira de Geomorfologia
This paper identifies and discusses the paleoenvironmental characteristics of the Quadrilátero Ferrífero based on studies of unconsolidated alluvial fans and the chronological organization of their respective sedimentary facies. These alluvial fans were
Fabrício Antonio Lopes, Paulo de Tarso Amorim Castro, Alex de Carvalho, Cláudio Eduardo Lana   +3 more
doaj   +1 more source

Sedimentary and U-Pb detrital zircons provenance of the Paleoproterozoic Piracicaba and Sabará groups, Quadrilátero Ferrífero, Southern São Francisco craton, Brazil

Brazilian Journal of Geology
The Quadrilátero Ferrífero is an important mineral province located in Southern São Francisco craton, SE Brazil. Its prominent feature is the Gandarela syncline that was formed as part of the regional deformation event in the southernmost part of the ...
Luiz Fernandes Dutra, Maximiliano Martins, Cristiano Lana   +2 more
doaj   +1 more source