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Prediction of mill ...
Prediction of mill structure behaviour in a tumbling mill
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- Jonsén, Pär (författare)
- Luleå tekniska universitet,Material- och solidmekanik
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- Pålsson, Bertil I. (författare)
- Luleå tekniska universitet,Industriell miljö- och processteknik
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- Tano, Kent (författare)
- Technology and Business Development, LKAB, SE-98381 Malmberget, Sweden
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- Berggren, Andreas (författare)
- Technology and Development, Boliden Minerals, SE-93681 Boliden, Sweden
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(creator_code:org_t)
- Elsevier BV, 2011
- 2011
- Engelska.
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Ingår i: Minerals Engineering. - : Elsevier BV. - 0892-6875 .- 1872-9444. ; 24:3-4, s. 236-244
- Relaterad länk:
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http://ltu.diva-port...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Computational demands and the lack of detailed experimental verification have limited the value of distinct element method (DEM) modelling approaches in mill simulation studies. This paper presents the results of a study in which the deflection of a lifter bar in a pilot ball mill is measured by an embedded strain gauge sensor and compared to deflections predicted from finite element (FE) simulations. The flexible rubber lifter and the lining in a tumbling mill are modelled with the finite element method (FEM) and the grinding medium is modelled with DEM. The deflection profile obtained from DEM-FE simulation shows a reasonably good correspondence to pilot mill measurements. To study the charge impact on the mill structure two different charges are used in the simulations. The approach is a contribution to the validation of DEM-FE simulations and an introduction to the description of a bendable rubber lifter implemented in a DEM-FEM mill model. It opens up the possibility to predict contact forces for varying mill dimensions and liner combinations. FEM is especially valuable in this case, since there are readily available libraries with material models.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Nyckelord
- Hållfasthetslära
- Solid Mechanics
- Mineralteknik
- Mineral Processing
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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