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Charge and structur...
Charge and 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 (författare)
- Luleå tekniska universitet,Industriell miljö- och processteknik
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- Tano, Kent (författare)
- Luleå tekniska universitet,Institutionen för samhällsbyggnad och naturresurser
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- Berggren, Andreas (författare)
- Technology and Development, Boliden Minerals, SE-93681 Boliden, Sweden
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(creator_code:org_t)
- London : Research Publishing Services, 2010
- 2010
- Engelska.
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Ingår i: The Fifth International Conference on Discrete Element Methods. - London : Research Publishing Services. - 9780955117985 ; , s. 490-495
- Relaterad länk:
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https://ltu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- The grinding process in tumbling mills is complex and to include all phenomena that occur in a single numerical model is today not possi-ble. 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 ele-ment (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 modelled with the distinct element method (DEM). The deflection profile obtained from DEM-FE simulation shows a reasonably good correspondence to pilot mill measurements. The approach presented here is a contribution to the validation of DEM-FE simulations and an introduction to the description of a bend-able 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. This is a fol-low-up work to previous preliminary result from a mono-size ball charge interaction study
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)
- kon (ämneskategori)
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