Evaluation of grinding circuits for iron ore.

dc.contributor.authorCarvalho, Marly Ávila de
dc.contributor.authorPereira, Carlos Alberto
dc.contributor.authorNogueira, Francielle Câmara
dc.date.accessioned2019-05-28T14:02:25Z
dc.date.available2019-05-28T14:02:25Z
dc.date.issued2019
dc.description.abstractGrinding has become one of the most important unitary operations for producing pellet feed for direct reduction from low-grade ores and small liberation size, such as compact itabirites. The aim of this study was to evaluate and compare two grinding circuits in an industrial iron ore plant, by evaluating the current operation through sampling, industrial data analysis and mass balancing. The flows analyzed were the grinding circuit, flotation throughput and desliming hydrocyclone overflow. In total, two grinding circuits were tested. One circuit had two mills installed in series, with the first mill operating in an open circuit and the second mill, in a reverse closed circuit. The second grinding circuit involved two mills operating in parallel, both in direct closed circuits. The results indicated that the parallel circuit produced 20% less slime than the series circuit, with an additional 4.3% throughput in the flotation feed. No circuit produced particles (> 0.15mm). The parallel circuit spent less 8.3% of energy by not using one of the hydrocyclone batteries.pt_BR
dc.identifier.citationCARVALHO, M. A. de; PEREIRA, C. A.; NOGUEIRA, F. C. Evaluation of grinding circuits for iron ore. REM - International Engineering Journal, Ouro Preto, v. 72, n. 1, p. 161-166, jan./mar. 2019. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2019000100161>. Acesso em: 12 fev. 2019.pt_BR
dc.identifier.doihttp://dx.doi.org/10.1590/0370-44672018720037pt_BR
dc.identifier.issn1807-0353
dc.identifier.urihttp://www.repositorio.ufop.br/handle/123456789/11348
dc.language.isoen_USpt_BR
dc.rightsabertopt_BR
dc.rights.licenseA REM - International Engineering Journal - autoriza o depósito de cópia de artigos dos professores e alunos da UFOP no Repositório Institucional da UFOP. Licença concedida mediante preenchimento de formulário online em: 12 set. 2013.pt_BR
dc.subjectCompact itabiritept_BR
dc.titleEvaluation of grinding circuits for iron ore.pt_BR
dc.typeArtigo publicado em periodicopt_BR

Arquivos

Pacote original

Agora exibindo 1 - 1 de 1
Nenhuma Miniatura Disponível
Nome:
ARTIGO_EvalutionGrindingCircuits.pdf
Tamanho:
1.45 MB
Formato:
Adobe Portable Document Format

Licença do pacote

Agora exibindo 1 - 1 de 1
Nenhuma Miniatura Disponível
Nome:
license.txt
Tamanho:
924 B
Formato:
Item-specific license agreed upon to submission
Descrição: