Skip to Main content Skip to Navigation

Exploitation sélective de gisements massifs de métaux non ferreux

Abstract : Mines are presently facing particularly tough markets: indeed the prices of mineral raw materials tend to go down on the long term and, for some products, become exceedingly unstable. This situation induces mining companies to look for new exploiting strategies, with two separate goals in mind: first gain a better profit from their ore body, then improve their capacity to react and adapt to changing conditions.
Cut off grade may be an opportunity to meet these goals. This important parameter makes a difference between ore and waste. It is used at the project evaluation stage to define the industrial ore body.
In this document, we develop the idea that implementing cut off on the basis of small selection blocs can be interesting. Indeed cut off could be more reactive in the short terme and its implementation would be far more efficient (for an equivalent metal recovery, the tonnage of material to be exploited would be much less). A model for the determination of the optimal cut off grade for this type of exploitation, called selective mining, is proposed. It is derived from the bottlenecks model, used for cut off grades evaluation at the project stage. The difficulties engendered by the implementation of selective mining are also discussed. This includes problems related to geological estimation, as well as short term planning problems.
Complete list of metadata
Contributor : Bibliothèque MINES ParisTech Connect in order to contact the contributor
Submitted on : Friday, March 18, 2011 - 3:48:07 PM
Last modification on : Wednesday, November 17, 2021 - 12:31:19 PM
Long-term archiving on: : Sunday, June 19, 2011 - 2:45:41 AM


  • HAL Id : pastel-00578193, version 1


Damien Goetz. Exploitation sélective de gisements massifs de métaux non ferreux. Géologie appliquée. École Nationale Supérieure des Mines de Paris, 2000. Français. ⟨NNT : 2000ENMP1213⟩. ⟨pastel-00578193⟩



Record views


Files downloads