Semi-Autogenous Wet Grinding Modeling with CFD-DEM
The paper highlights the features of constructing a model of a wet semi-autogenous grinding mill based on the discrete element method and computational fluid dynamics. The model was built using Rocky DEM (v. 4.4.2, ESSS, Brazil) and Ansys Fluent (v. 2020 R2, Ansys, Inc., United States) software. A l...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-05-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/11/5/485 |
| _version_ | 1797535419539128320 |
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| author | Vladislav Lvov Leonid Chitalov |
| author_facet | Vladislav Lvov Leonid Chitalov |
| author_sort | Vladislav Lvov |
| collection | DOAJ |
| description | The paper highlights the features of constructing a model of a wet semi-autogenous grinding mill based on the discrete element method and computational fluid dynamics. The model was built using Rocky DEM (v. 4.4.2, ESSS, Brazil) and Ansys Fluent (v. 2020 R2, Ansys, Inc., United States) software. A list of assumptions and boundary conditions necessary for modeling the process of wet semi-autogenous grinding by the finite element method is presented. The created model makes it possible to determine the energy-coarseness ratios of the semi-autogenous grinding (SAG) process under given conditions. To create the model in Rocky DEM the following models were used: The Linear Spring Rolling Limit rolling model, the Hysteretic Linear Spring model of the normal interaction forces and the Linear Spring Coulomb Limit for tangential forces. When constructing multiphase in Ansys Fluent, the Euler model was used with the primary phase in the form of a pulp with a given viscosity and density, and secondary phases in the form of air, crushing bodies and ore particles. The resistance of the solid phase to air and water was described by the Schiller–Naumann model, and viscosity by the realizable k-epsilon model with a dispersed multiphase turbulence model. The results of the work methods for material interaction coefficients determination were developed. A method for calculating the efficiency of the semi-autogenous grinding process based on the results of numerical simulation by the discrete element method is proposed. |
| first_indexed | 2024-03-10T11:45:10Z |
| format | Article |
| id | doaj.art-557d38f68dac4285986b568c14dd51c0 |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-10T11:45:10Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-557d38f68dac4285986b568c14dd51c02023-11-21T18:10:17ZengMDPI AGMinerals2075-163X2021-05-0111548510.3390/min11050485Semi-Autogenous Wet Grinding Modeling with CFD-DEMVladislav Lvov0Leonid Chitalov1Mineral Processing Department, Saint Petersburg Mining University, 199106 Saint Petersburg, RussiaMineral Processing Department, Saint Petersburg Mining University, 199106 Saint Petersburg, RussiaThe paper highlights the features of constructing a model of a wet semi-autogenous grinding mill based on the discrete element method and computational fluid dynamics. The model was built using Rocky DEM (v. 4.4.2, ESSS, Brazil) and Ansys Fluent (v. 2020 R2, Ansys, Inc., United States) software. A list of assumptions and boundary conditions necessary for modeling the process of wet semi-autogenous grinding by the finite element method is presented. The created model makes it possible to determine the energy-coarseness ratios of the semi-autogenous grinding (SAG) process under given conditions. To create the model in Rocky DEM the following models were used: The Linear Spring Rolling Limit rolling model, the Hysteretic Linear Spring model of the normal interaction forces and the Linear Spring Coulomb Limit for tangential forces. When constructing multiphase in Ansys Fluent, the Euler model was used with the primary phase in the form of a pulp with a given viscosity and density, and secondary phases in the form of air, crushing bodies and ore particles. The resistance of the solid phase to air and water was described by the Schiller–Naumann model, and viscosity by the realizable k-epsilon model with a dispersed multiphase turbulence model. The results of the work methods for material interaction coefficients determination were developed. A method for calculating the efficiency of the semi-autogenous grinding process based on the results of numerical simulation by the discrete element method is proposed.https://www.mdpi.com/2075-163X/11/5/485AGSAGFEMDEMCFDRocky DEM |
| spellingShingle | Vladislav Lvov Leonid Chitalov Semi-Autogenous Wet Grinding Modeling with CFD-DEM Minerals AG SAG FEM DEM CFD Rocky DEM |
| title | Semi-Autogenous Wet Grinding Modeling with CFD-DEM |
| title_full | Semi-Autogenous Wet Grinding Modeling with CFD-DEM |
| title_fullStr | Semi-Autogenous Wet Grinding Modeling with CFD-DEM |
| title_full_unstemmed | Semi-Autogenous Wet Grinding Modeling with CFD-DEM |
| title_short | Semi-Autogenous Wet Grinding Modeling with CFD-DEM |
| title_sort | semi autogenous wet grinding modeling with cfd dem |
| topic | AG SAG FEM DEM CFD Rocky DEM |
| url | https://www.mdpi.com/2075-163X/11/5/485 |
| work_keys_str_mv | AT vladislavlvov semiautogenouswetgrindingmodelingwithcfddem AT leonidchitalov semiautogenouswetgrindingmodelingwithcfddem |