A collaborative model planning to coordinate mining and smelting furnace

International audienceIn this paper, we are interested in the tactical planning problem of mines and smelting furnace. The problem concerns a set of mines with one smelting furnace. We are faced to a multi-actor’s context for which a global optimization is not possible due to the independence of the services. This problem is solved using a set of local optimization model of mines bloc extraction and a model of smelting furnace. This paper begin with the state of the art related to the principal problems in mining process. It justifies the novelty of our work. Indeed, this paper aims to discuss on the impact of sharing information between downstream processes and upstream processes. Consequently, after the state of the art, the classical planning process using local optimization and the information sharing process are presented. In the following part, profits generated and related to different contexts: value-creation and approach are compared. At the end of the paper, conclusion and future extensions are presented

Planification sous incertitude d'un complexe minier

Most manufacturing products are composed of metals, themselves produced from mining or recycling of metal alloys.Our study is part of the context of mining. This activity generates huge profits through two processes: the upstream process and the downstream process. The upstream process is the headquarters of the extraction activities while the downstream process is the seat of the transformation activities. Because of the huge profits generated by the mining activity, one of the primary concerns of the decision-makers is to ensure a stable income for the activity. Therefore, we must ensure the robustness of the mining production chain. The robustness of the mining production chain means a stability of the chain in the face of hazards outside from the mining system.It should be noted that the processes of the mining chain are realized in an unique reality. Hence, we are interested in the New Caledonian mining process (French archipelago of the South Pacific) in which maritime transport is essential. This specificity places the mining system in an environment subject to climatic hazards. In this context, we are interested in the hazards caused by the hurricane event; a frequent phenomenon in this part of the globe.In order to ensure the robustness of the mining production chain, we propose to coordinate upstream and downstream processes via the exchange of key information between upstream and downstream processes and also at the very heart of the upstream process ie between mines. Moreover, the consideration of cyclonic hazards is done by a scenario approach.In order to solve the question of mining planning under uncertainty in order to ensure the robustness of the entire mining system: a bibliographic study has made it possible to highlight the component processes of the global chain. This study also identified two types of uncertainty: ore supply uncertainty and uncertainty in the distribution of the mineral product. Climate hazards are poorly studied, as is the exchange of key information between upstream and downstream processes.As a perspective, we propose: knowledge propagation in the mining context then we propose the consideration of other sources of ore likely to modify the current definition of the mining chain and finally the taking into account of the appropriate weightings between the scenarios describing expert knowledge of a hazard affecting the mining chain.La plupart des produits manufacturiers sont composés de métaux, eux-mêmes produits à partir de l’extraction minière ou du recyclage d’alliages métalliques.Notre étude s’inscrit dans le contexte de l’exploitation minière. Cette activité génère des profits colossaux grâce à deux processus : le processus amont et le processus avale. Le processus amont est le siège des activités d’extraction tandis que le processus aval est le siège des activités de transformation. Du fait des profits colossaux générés par l’activité d’exploitation minière, une des préoccupations premières des décideurs est d’assurer un revenu stable pour l’activité. Par conséquent, on doit assurer la robustesse de la chaîne de production minière. Par robustesse de la chaîne de production minière on entend une stabilité de la chaîne face aux aléas extérieurs au système minier.Il faut noter que les processus de la chaîne minière se réalisent dans une réalité propre. De ce fait, nous nous intéressons au processus minier calédonien (archipel français du pacifique sud) dans lequel le transport maritime est primordial. Cette spécificité inscrit le système minier dans un environnement sujet aux aléas climatiques. Dans ce contexte, nous nous intéressons aux aléas causés par l’occurrence d’ouragan ; phénomène fréquent dans cette partie du globe.Afin d’assurer la robustesse de la chaîne de production minière, nous proposons d’assurer une coordination entre processus amont et aval via l’échange d’information clé entre les processus amont et aval et également au cœur même du processus amont i.e. entre les mines. Ajoutons, que la prise en compte des aléas cycloniques se fait par une approche par scénario.Afin de résoudre la question de la planification minière sous incertitude dans le but d’assurer la robustesse de l’ensemble du système minier : une étude bibliographique a permis de mettre en exergue les processus composant de la chaîne globale. Cette étude a également permis d’identifier deux types d’incertitude : l’incertitude liée à l’approvisionnement de minerai et l’incertitude liée à la distribution du produit minier. Les aléas climatiques sont peu étudiés, de même que l’échange d’information clé entre processus amont et processus aval.En guise de perspective, nous proposons : la propagation et la représentation de la connaissance entre processus amont et aval

Global mine planning Under uncertainty

La plupart des produits manufacturiers sont composés de métaux, eux-mêmes produits à partir de l’extraction minière ou du recyclage d’alliages métalliques.Notre étude s’inscrit dans le contexte de l’exploitation minière. Cette activité génère des profits colossaux grâce à deux processus : le processus amont et le processus avale. Le processus amont est le siège des activités d’extraction tandis que le processus aval est le siège des activités de transformation. Du fait des profits colossaux générés par l’activité d’exploitation minière, une des préoccupations premières des décideurs est d’assurer un revenu stable pour l’activité. Par conséquent, on doit assurer la robustesse de la chaîne de production minière. Par robustesse de la chaîne de production minière on entend une stabilité de la chaîne face aux aléas extérieurs au système minier.Il faut noter que les processus de la chaîne minière se réalisent dans une réalité propre. De ce fait, nous nous intéressons au processus minier calédonien (archipel français du pacifique sud) dans lequel le transport maritime est primordial. Cette spécificité inscrit le système minier dans un environnement sujet aux aléas climatiques. Dans ce contexte, nous nous intéressons aux aléas causés par l’occurrence d’ouragan ; phénomène fréquent dans cette partie du globe.Afin d’assurer la robustesse de la chaîne de production minière, nous proposons d’assurer une coordination entre processus amont et aval via l’échange d’information clé entre les processus amont et aval et également au cœur même du processus amont i.e. entre les mines. Ajoutons, que la prise en compte des aléas cycloniques se fait par une approche par scénario.Afin de résoudre la question de la planification minière sous incertitude dans le but d’assurer la robustesse de l’ensemble du système minier : une étude bibliographique a permis de mettre en exergue les processus composant de la chaîne globale. Cette étude a également permis d’identifier deux types d’incertitude : l’incertitude liée à l’approvisionnement de minerai et l’incertitude liée à la distribution du produit minier. Les aléas climatiques sont peu étudiés, de même que l’échange d’information clé entre processus amont et processus aval.En guise de perspective, nous proposons : la propagation et la représentation de la connaissance entre processus amont et aval.Most manufacturing products are composed of metals, themselves produced from mining or recycling of metal alloys.Our study is part of the context of mining. This activity generates huge profits through two processes: the upstream process and the downstream process. The upstream process is the headquarters of the extraction activities while the downstream process is the seat of the transformation activities. Because of the huge profits generated by the mining activity, one of the primary concerns of the decision-makers is to ensure a stable income for the activity. Therefore, we must ensure the robustness of the mining production chain. The robustness of the mining production chain means a stability of the chain in the face of hazards outside from the mining system.It should be noted that the processes of the mining chain are realized in an unique reality. Hence, we are interested in the New Caledonian mining process (French archipelago of the South Pacific) in which maritime transport is essential. This specificity places the mining system in an environment subject to climatic hazards. In this context, we are interested in the hazards caused by the hurricane event; a frequent phenomenon in this part of the globe.In order to ensure the robustness of the mining production chain, we propose to coordinate upstream and downstream processes via the exchange of key information between upstream and downstream processes and also at the very heart of the upstream process ie between mines. Moreover, the consideration of cyclonic hazards is done by a scenario approach.In order to solve the question of mining planning under uncertainty in order to ensure the robustness of the entire mining system: a bibliographic study has made it possible to highlight the component processes of the global chain. This study also identified two types of uncertainty: ore supply uncertainty and uncertainty in the distribution of the mineral product. Climate hazards are poorly studied, as is the exchange of key information between upstream and downstream processes.As a perspective, we propose: knowledge propagation in the mining context then we propose the consideration of other sources of ore likely to modify the current definition of the mining chain and finally the taking into account of the appropriate weightings between the scenarios describing expert knowledge of a hazard affecting the mining chain

Robust optimization for mine planning

International audienceIn this paper, we are interested in mine planning under uncertainty on the capacity of extraction in a mine complex. Indeed, in real life there is always a gap between planned activities and activities carried out during the period. In this paper, we focus on the activity of extraction. In order to achieve this challenge, we proposed a model to represent the mining complex. This model takes into account the uncertainty on the capacity by the use of scenarios. In order to face the uncertainty on the capacity of extraction we propose a robust approach with the MaxMin decision criterion. To the best of our knowledge, while the bulk of the literature treats the optimization in mining complex with stochastic approaches, this paper uses a robust approach under uncertainty. A case study using data from a nickel laterite company is used in order to implement the proposed model under uncertainty on capacity

A Collaborative Planning Model to Coordinate Mining and Smelting Furnace

Part 10: Performance and OptimizationInternational audienceIn this paper, we are interested in the tactical planning problem of mines and smelting furnace. The problem concerns a set of mines with one smelting furnace. We are faced to a multi-actor’s context for which a global optimization is not possible due to the independence of the services. This problem is solved using a set of local optimization model of mines bloc extraction and a model of smelting furnace. This paper begin with the state of the art related to the principal problems in mining process. It justifies the novelty of our work. Indeed, this paper aims to discuss on the impact of sharing information between downstream processes and upstream processes. Consequently, after the state of the art, the classical planning process using local optimization and the information sharing process are presented. In the following part, profits generated and related to different contexts: value-creation and approach are compared. At the end of the paper, conclusion and future extensions are presented

Journal of swine health and production

In this paper we are interested in the mine planning. The aims of this paper is to propose a new model of global optimization for bloc extraction and smelting furnace and then evaluate the advantage to use a global model rather than a set of local optimization. In fact, organizing a global optimization between mines extraction site and smelting furnace require a reorganization of the mines planning service and the smelting furnace planning service. Show the advantage of a global optimization approach is the first step of the process of a global optimization. The proposed model is capable of optimizing mining complexes and takes into account the possibility to produce different types of products thanks to production policies dictated by the processing plant