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| Δείκτης Εργασίας Bond× | Ανάλυση Πλυσιμότητας× | |
|---|---|---|
| Πεδίο | Μεταλλευτική Μηχανική | Μεταλλευτική Μηχανική |
| Οικογένεια | Process / pipeline | Process / pipeline |
| Έτος προέλευσης≠ | 1952 | 1950 |
| Δημιουργός≠ | Fred C. Bond | Mining Industry Practice (1930s-1960s) |
| Τύπος≠ | Empirical method for grinding energy estimation | Separation analysis by density fractionation |
| Θεμελιώδης πηγή≠ | Bond, F. C. (1952). The third theory of comminution. Transactions of the American Institute of Mining and Metallurgical Engineers, 193, 484-494. link ↗ | McCullough, R. B. (1963). The theoretical basis and practical application of coal washability studies. Transactions of the Society of Mining Engineers, 226, 13-26. link ↗ |
| Εναλλακτικές ονομασίες | Bond Work Index, BWI, Bond Index Test | Coal Washability, Density Separation Analysis, Float-Sink Analysis |
| Συναφείς | 3 | 3 |
| Σύνοψη≠ | The Bond Work Index, introduced by Fred C. Bond in 1952, is an empirical parameter that characterizes the resistance of an ore to grinding in a tumbling mill. It is defined as the kilowatt-hours per short ton (kWh/st) of electrical energy required to reduce a coarse ore from theoretically infinite size to 80% passing 100 micrometers. The Bond Index is foundational in mineral processing plant design and cost estimation worldwide. | Washability analysis is a laboratory method that determines the feasibility and efficiency of density-based separation for coal or mineral beneficiation. By fractionating ore or coal into density bins using sink-float tests and assaying each fraction, engineers can optimize design of separation plants (dense-medium cyclones, jigs, spirals) and predict clean product quality. Washability curves are essential tools for pre-feasibility and detailed design studies. |
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