DEM Modelling and Simulation of Banana Screen Classification Efficiency

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Davoodi, Ali,1984Chalmers tekniska högskola,Chalmers University of Technology (författare)

DEM Modelling and Simulation of Banana Screen Classification Efficiency

Artikel/kapitelEngelska2015

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2015

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LIBRIS-ID:oai:research.chalmers.se:ccca13a7-c5e4-4a8b-8bf7-f998c68cf5f8
https://research.chalmers.se/publication/225130URI
https://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-14950URI

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Språk:engelska
Sammanfattning på:engelska

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Ämneskategori:kon swepub-publicationtype
Ämneskategori:vet swepub-contenttype

Anmärkningar

Banana screens are popular and frequently used in minerals processing. The screens are characterized by a high separation capacity and low maintenance need. The operation of screening usually takes place after crushing operation. The banana screens have multiple panels with variable slope which enables the feed material to flow rapidly resulting in a high screening rate. The difference between banana screens and other screens is that in banana screens the screen cut size varies with the changing slope of the decks. There are a number of factors affecting the screening operation; the deck panel slope progression, screen deck material, aperture shape, vibrational motion, open area, thickness of deck, feed rate and material properties.The aim of this paper is to simulate the screening performance by using the Discrete Element Method (DEM) and to analyse different motions that affect screening operation efficiency. Three decks with different slopes have been used and two different motions, linear and elliptical, have been evaluated at one feed rate. Figure 1 shows the overview of DEM simulation of screening process. Design of Experiment (DoE) has been used to evaluate the factors that control the value of parameters. The results show that the classification efficiency can be evaluated by conventional comparison between the feed particle size distribution and each of the product streams. The resolution of the model also enables the calculation of a critical efficiency criteria position along the screen deck. This position can be used to define a screening robustness factor. The passage probability and stratification behaviour can also be evaluated.

Ämnesord och genrebeteckningar

TEKNIK OCH TEKNOLOGIER Maskinteknik hsv//swe
ENGINEERING AND TECHNOLOGY Mechanical Engineering hsv//eng
DEM
Banana screen
Discrete Element Method
Classification Efficiency
Separation.

Biuppslag (personer, institutioner, konferenser, titlar ...)

Quist, Johannes,1985Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)jquist (författare)
Hulthén, Erik,1980Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)huleri (författare)
Bengtsson, Magnus,1973Chalmers tekniska högskola,Chalmers University of Technology(Swepub:hb)mnbe (författare)
Evertsson, Magnus,1967Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)cme (författare)
Chalmers tekniska högskolaChalmers University of Technology (creator_code:org_t)

Sammanhörande titlar

Ingår i:Minerals Engineering0892-6875

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Minerals Engineering (Sök värdpublikationen i LIBRIS)

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Av författaren/redakt...: Davoodi, Ali, 19 ...; Quist, Johannes, ...; Hulthén, Erik, 1 ...; Bengtsson, Magnu ...; Evertsson, Magnu ...

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Maskinteknik

Artiklar i publikationen: Minerals Enginee ...

Av lärosätet: Chalmers tekniska högskola; Högskolan i Borås

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