| Título: | The application of the sag power index to ore body hardness characterization for the design and optimization of autogenous grinding circuits / |
| Autores: | Amelunxen, Peter |
| Fecha: | 2003 |
| Publicador: | McGill University - MCGILL |
| Fuente: |
 |
| Tipo: | Electronic Thesis or Dissertation |
| Tema: | Engineering, Metallurgy. |
| Descripción: | The SAG Power Index test (SPI) is a tool for forecasting autogenous mill performance. Much effort has been directed towards the development of the process models relating SPI to throughput estimates, but little has been directed towards ore body modeling. Blending studies are presented showing that the SPI is not additive, affecting the geostatistical procedures. A method is given to ensure that additivity is respected during geostatistical interpolation. A procedure for relating mean SPI precision to sample spacing is given. This procedure is combined with a study of the process model error to estimate the precision of the mean throughput forecasts. A case study from Chino Mines is discussed. The relative throughput error is between 20 and 26 percent for perfect knowledge of SPI. For 100 m sample spacing at Chino, one third of the error is due to the process models and the rest to the SPI estimates. |
| Idioma: | en |
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