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Article

Variability Study of Bond Work Index and Grindability Index on Various Critical Metal Ores

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Escuela Politécnica de Mieres, University of Oviedo, Gonzalo Gutiérrez Quirós, 33600 Mieres, Spain
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Departament D’Enginyeria Minera, Industrial i TIC, Universitat Politècnica De Catalunya Barcelona Tech, Av. Bases De Manresa, 08242 Manresa, Spain
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Escuela Politecnica de Ingenieria de Minas y Energia, Universidad de Cantabria, Ronda Rufino Peón, 39316 Torrrelavega, Spain
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CETAM, Universidad de Moa Dr. Antonio Núñez Jiménez, Moa 83300, Cuba
*
Author to whom correspondence should be addressed.
Academic Editor: Jean François Blais
Metals 2021, 11(6), 970; https://doi.org/10.3390/met11060970
Received: 14 May 2021 / Revised: 11 June 2021 / Accepted: 14 June 2021 / Published: 17 June 2021
(This article belongs to the Special Issue Grinding and Concentration Technology of Critical Metals)
It is a well-known fact that the value of the Bond work index (wi) for a given ore varies along with the grinding size. In this study, a variability bysis is carried out with the Bond standard grindability tests on different critical metal ores (W, Ta), ranging from coarse grinding (rod mills) to fine grinding (ball mills). The relationship between wi and grinding size did not show a clear correlation, while the grindability index (gpr) and the grinding size showed a robust correlation, fitting in all cases to a quadratic curve with a very high regression coefficient. This result suggests that, when performing correlation studies among ore grindability and rock mechanics parameters, it is advised to use the grindability index instead of the Bond work index. View Full-Text
Keywords: grindability; comminution; Bond work index grindability; comminution; Bond work index
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MDPI and ACS Style

García, G.G.; Oliva, J.; Guasch, E.; Anticoi, H.; Coello-Velázquez, A.L.; Menéndez-Aguado, J.M. Variability Study of Bond Work Index and Grindability Index on Various Critical Metal Ores. Metals 2021, 11, 970. https://doi.org/10.3390/met11060970

AMA Style

García GG, Oliva J, Guasch E, Anticoi H, Coello-Velázquez AL, Menéndez-Aguado JM. Variability Study of Bond Work Index and Grindability Index on Various Critical Metal Ores. Metals. 2021; 11(6):970. https://doi.org/10.3390/met11060970

Chicago/Turabian Style

García, Gloria G., Josep Oliva, Eduard Guasch, Hernán Anticoi, Alfredo L. Coello-Velázquez, and Juan M. Menéndez-Aguado 2021. "Variability Study of Bond Work Index and Grindability Index on Various Critical Metal Ores" Metals 11, no. 6: 970. https://doi.org/10.3390/met11060970

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