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Abstract: 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.
Fuente: Metals 2021, 11(6), 970
Publisher: MDPI
Publication date: 17/06/2021
No. of pages: 11
Publication type: Article
DOI: doi.org/10.3390/met11060970
ISSN: 2075-4701
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GARCÍA, GLORIA G.
OLIVA, JOSEP
GUASCH, EDUARD
HERNAN FRANCISCO ANTICOI SUDZUKI
COELLO VELÁZQUEZ, ALFREDO L.
MENÉNDEZ AGUADO, JUAN M.
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