Kinetics of Dry-Batch Grinding in a Laboratory-Scale Ball Mill of Sn–Ta–Nb Minerals from the Penouta Mine (Spain)
The optimization of processing plants is one of the main concerns in the mining industry, since the comminution stage, a fundamental operation, accounts for up to 70% of total energy consumption. The aim of this study was to determine the effects that ball size and mill speed exert on the milling ki...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-12-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/10/12/1687 |
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| author | Jenniree V. Nava Teresa Llorens Juan María Menéndez-Aguado |
| author_facet | Jenniree V. Nava Teresa Llorens Juan María Menéndez-Aguado |
| author_sort | Jenniree V. Nava |
| collection | DOAJ |
| description | The optimization of processing plants is one of the main concerns in the mining industry, since the comminution stage, a fundamental operation, accounts for up to 70% of total energy consumption. The aim of this study was to determine the effects that ball size and mill speed exert on the milling kinetics over a wide range of particle sizes. This was done through dry milling and batch grinding tests performed on two samples from the Penouta Sn–Ta–Nb mine (Galicia, Spain), and following Austin methodology. In addition, the relationships amongst Sn, Ta and Nb content, as metals of interest, the specific rate of breakage <i>S<sub>i</sub></i>, the kinetic parameters, and the operational conditions were studied through X-Ray fluorescence (XRF) techniques. The results show that, overall, the specific rate of breakage <i>S<sub>i</sub></i> decreases with decreasing feed particle size and increasing ball size for most of the tested conditions. A selection function, <i>α<sub>T</sub></i>, was formulated on the basis of the ball size for both Penouta mine samples. Finally, it was found that there does exist a direct relationship amongst Sn, Ta and Nb content, as metals of interest, in the milling product, the specific rate of breakage <i>S<sub>i</sub></i> and the operational–mineralogical variables of ball size, mill speed and feed particle size. |
| first_indexed | 2024-03-10T14:00:07Z |
| format | Article |
| id | doaj.art-7af0e237e72447f3a063524df9cd3057 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T14:00:07Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-7af0e237e72447f3a063524df9cd30572023-11-21T01:16:15ZengMDPI AGMetals2075-47012020-12-011012168710.3390/met10121687Kinetics of Dry-Batch Grinding in a Laboratory-Scale Ball Mill of Sn–Ta–Nb Minerals from the Penouta Mine (Spain)Jenniree V. Nava0Teresa Llorens1Juan María Menéndez-Aguado2Strategic Minerals Spain, S.L. Ctra. OU-0901 Km 14, Penouta Mine, Viana do Bolo, 32558 Ourense, Galicia, SpainStrategic Minerals Spain, S.L. Ctra. OU-0901 Km 14, Penouta Mine, Viana do Bolo, 32558 Ourense, Galicia, SpainEscuela Politécnica de Mieres, University of Oviedo, Gonzalo Gutiérrez Quirós, 33600 Mieres, Asturias, SpainThe optimization of processing plants is one of the main concerns in the mining industry, since the comminution stage, a fundamental operation, accounts for up to 70% of total energy consumption. The aim of this study was to determine the effects that ball size and mill speed exert on the milling kinetics over a wide range of particle sizes. This was done through dry milling and batch grinding tests performed on two samples from the Penouta Sn–Ta–Nb mine (Galicia, Spain), and following Austin methodology. In addition, the relationships amongst Sn, Ta and Nb content, as metals of interest, the specific rate of breakage <i>S<sub>i</sub></i>, the kinetic parameters, and the operational conditions were studied through X-Ray fluorescence (XRF) techniques. The results show that, overall, the specific rate of breakage <i>S<sub>i</sub></i> decreases with decreasing feed particle size and increasing ball size for most of the tested conditions. A selection function, <i>α<sub>T</sub></i>, was formulated on the basis of the ball size for both Penouta mine samples. Finally, it was found that there does exist a direct relationship amongst Sn, Ta and Nb content, as metals of interest, in the milling product, the specific rate of breakage <i>S<sub>i</sub></i> and the operational–mineralogical variables of ball size, mill speed and feed particle size.https://www.mdpi.com/2075-4701/10/12/1687ball millkinetic grindingspecific grinding rateSn–Ta–NbPenouta Mine |
| spellingShingle | Jenniree V. Nava Teresa Llorens Juan María Menéndez-Aguado Kinetics of Dry-Batch Grinding in a Laboratory-Scale Ball Mill of Sn–Ta–Nb Minerals from the Penouta Mine (Spain) Metals ball mill kinetic grinding specific grinding rate Sn–Ta–Nb Penouta Mine |
| title | Kinetics of Dry-Batch Grinding in a Laboratory-Scale Ball Mill of Sn–Ta–Nb Minerals from the Penouta Mine (Spain) |
| title_full | Kinetics of Dry-Batch Grinding in a Laboratory-Scale Ball Mill of Sn–Ta–Nb Minerals from the Penouta Mine (Spain) |
| title_fullStr | Kinetics of Dry-Batch Grinding in a Laboratory-Scale Ball Mill of Sn–Ta–Nb Minerals from the Penouta Mine (Spain) |
| title_full_unstemmed | Kinetics of Dry-Batch Grinding in a Laboratory-Scale Ball Mill of Sn–Ta–Nb Minerals from the Penouta Mine (Spain) |
| title_short | Kinetics of Dry-Batch Grinding in a Laboratory-Scale Ball Mill of Sn–Ta–Nb Minerals from the Penouta Mine (Spain) |
| title_sort | kinetics of dry batch grinding in a laboratory scale ball mill of sn ta nb minerals from the penouta mine spain |
| topic | ball mill kinetic grinding specific grinding rate Sn–Ta–Nb Penouta Mine |
| url | https://www.mdpi.com/2075-4701/10/12/1687 |
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