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| Rosin-Rammler-fördelningen× | Bonds "Work Index"× | |
|---|---|---|
| Ämnesområde | Gruvteknik | Gruvteknik |
| Familj | Process / pipeline | Process / pipeline |
| Ursprungsår≠ | 1933 | 1952 |
| Upphovsperson≠ | Paul Rosin and Erich Rammler | Fred C. Bond |
| Typ≠ | Empirical probability distribution for crushed material fineness | Empirical method for grinding energy estimation |
| Ursprungskälla≠ | Rosin, P., & Rammler, E. (1933). The laws governing the fineness of powdered coal. Journal of the Institute of Fuel, 7, 29-36. link ↗ | Bond, F. C. (1952). The third theory of comminution. Transactions of the American Institute of Mining and Metallurgical Engineers, 193, 484-494. link ↗ |
| Alias | Rosin-Rammler Model, RRS Distribution, Weibull Distribution (particle size) | Bond Work Index, BWI, Bond Index Test |
| Närliggande | 3 | 3 |
| Sammanfattning≠ | The Rosin-Rammler Distribution, introduced by Paul Rosin and Erich Rammler in 1933, is an empirical probability distribution that describes the particle size distribution of ground or crushed materials. It characterizes fineness by two parameters: the characteristic size (d-prime) and the uniformity index (n). This distribution is remarkably accurate for mineral processing streams and is ubiquitous in comminution engineering. | 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. |
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