Screens and cyclones in closed grinding circuits
Dynamic separators are efficient dry classifiers because new designs during the last 50 years have reduced the by-pass and improved the partition curve. By contrast cyclones have been used as classifiers in wet grinding circuits for 50 years but without serious change and the early problems which we...
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ftunivqespace:oai:espace.library.uq.edu.au:UQ:704852 2023-05-15T17:05:00+02:00 Screens and cyclones in closed grinding circuits Dündar, Hakan Kalugin, Alexander Delgado, Marco Palomino, Alberto Türkistanli, Ali Aquino, Benigno Lynch, Alban Juan Yianatos 2014-01-01 https://espace.library.uq.edu.au/view/UQ:704852 eng eng Gecamin 1904 Earth-Surface Processes 1906 Geochemistry and Petrology 1909 Geotechnical Engineering and Engineering Geology 2210 Mechanical Engineering Conference Paper 2014 ftunivqespace 2020-08-06T04:57:38Z Dynamic separators are efficient dry classifiers because new designs during the last 50 years have reduced the by-pass and improved the partition curve. By contrast cyclones have been used as classifiers in wet grinding circuits for 50 years but without serious change and the early problems which were caused by high and variable by-pass, and different mineral specific gravities, still exist. High frequency screens are now used for wet separation and the operating characteristics of closed grinding circuits using cyclones or screens are discussed. Data come from circuits at the Condestable, Cerro Lindo, El Brocal and Catalina Huanca mines in Peru, the Eczacibasi mine in Turkey, and the Apatit mine in central Kola Peninsula in Russia. All classifier data are described by their partition curves and all mill data by their breakage rates. With cyclones the by-pass, d50, and sharpness of the partition curve change as operating conditions change but with high frequency screens the values vary little because the by-pass is low, the sharpness is high, and d50 depends on the aperture size. Data from all plants indicate that lower by-pass and sharper separation improve breakage rates and throughputs. An initial model of the screen is proposed. Conference Object kola peninsula The University of Queensland: UQ eSpace Kola Peninsula Catalina ENVELOPE(-59.633,-59.633,-62.333,-62.333) |
institution |
Open Polar |
collection |
The University of Queensland: UQ eSpace |
op_collection_id |
ftunivqespace |
language |
English |
topic |
1904 Earth-Surface Processes 1906 Geochemistry and Petrology 1909 Geotechnical Engineering and Engineering Geology 2210 Mechanical Engineering |
spellingShingle |
1904 Earth-Surface Processes 1906 Geochemistry and Petrology 1909 Geotechnical Engineering and Engineering Geology 2210 Mechanical Engineering Dündar, Hakan Kalugin, Alexander Delgado, Marco Palomino, Alberto Türkistanli, Ali Aquino, Benigno Lynch, Alban Screens and cyclones in closed grinding circuits |
topic_facet |
1904 Earth-Surface Processes 1906 Geochemistry and Petrology 1909 Geotechnical Engineering and Engineering Geology 2210 Mechanical Engineering |
description |
Dynamic separators are efficient dry classifiers because new designs during the last 50 years have reduced the by-pass and improved the partition curve. By contrast cyclones have been used as classifiers in wet grinding circuits for 50 years but without serious change and the early problems which were caused by high and variable by-pass, and different mineral specific gravities, still exist. High frequency screens are now used for wet separation and the operating characteristics of closed grinding circuits using cyclones or screens are discussed. Data come from circuits at the Condestable, Cerro Lindo, El Brocal and Catalina Huanca mines in Peru, the Eczacibasi mine in Turkey, and the Apatit mine in central Kola Peninsula in Russia. All classifier data are described by their partition curves and all mill data by their breakage rates. With cyclones the by-pass, d50, and sharpness of the partition curve change as operating conditions change but with high frequency screens the values vary little because the by-pass is low, the sharpness is high, and d50 depends on the aperture size. Data from all plants indicate that lower by-pass and sharper separation improve breakage rates and throughputs. An initial model of the screen is proposed. |
author2 |
Juan Yianatos |
format |
Conference Object |
author |
Dündar, Hakan Kalugin, Alexander Delgado, Marco Palomino, Alberto Türkistanli, Ali Aquino, Benigno Lynch, Alban |
author_facet |
Dündar, Hakan Kalugin, Alexander Delgado, Marco Palomino, Alberto Türkistanli, Ali Aquino, Benigno Lynch, Alban |
author_sort |
Dündar, Hakan |
title |
Screens and cyclones in closed grinding circuits |
title_short |
Screens and cyclones in closed grinding circuits |
title_full |
Screens and cyclones in closed grinding circuits |
title_fullStr |
Screens and cyclones in closed grinding circuits |
title_full_unstemmed |
Screens and cyclones in closed grinding circuits |
title_sort |
screens and cyclones in closed grinding circuits |
publisher |
Gecamin |
publishDate |
2014 |
url |
https://espace.library.uq.edu.au/view/UQ:704852 |
long_lat |
ENVELOPE(-59.633,-59.633,-62.333,-62.333) |
geographic |
Kola Peninsula Catalina |
geographic_facet |
Kola Peninsula Catalina |
genre |
kola peninsula |
genre_facet |
kola peninsula |
_version_ |
1766059375212888064 |