A mine planning model to satisfy long-term grade targets
| Autor: | M. Rimes, Jim Everett |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Stripping ratio
Visual Basic Computer science engineering.material Geotechnical Engineering and Engineering Geology Industrial engineering Term (time) Tonnage Resource (project management) Mining engineering Iron ore Geochemistry and Petrology Production schedule Earth and Planetary Sciences (miscellaneous) engineering Macro computer computer.programming_language |
| Zdroj: | Applied Earth Science. 119:183-187 |
| ISSN: | 1743-2758 0371-7453 |
| DOI: | 10.1179/1743275811y.0000000010 |
| Popis: | This paper describes a technique to predict the head grades and likely variances from target grade that can be achieved from mining an iron ore deposit. The method develops a production schedule from a block model. The example used was created from a wide-spaced drilling program and was classified as an Inferred Resource, but the method can be applied to any block model based on the available combination of Proved and Probable reserves. Marketing contracts require examination whether the target grade, i.e. Fe, P, SiO2, Al2O3, can be kept constant, or must be revised during the life of the mine. A model (written in Excel using Visual Basic macros, details available from the first author) develops a feasible, close to optimal, mine plan from block model data. Cut-off grades for minable ore are chosen. The model evaluates ore tonnage, grade and stripping ratio against depth. Outputs at this stage include plots of slices through the ore body, at nominated x, y and z coordinates, showing ore grade, was... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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