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Flexibility of dynamic blending with alternative routings combined with security stocks: a new approach in a mining supply chain

Author

Listed:
  • Ahlam Azzamouri

    (EMINES School of Industrial Management [UM6P] - UM6P - Université Mohammed VI Polytechnique [Ben Guerir])

  • Mouna Bamoumen

    (CREM - Centre de recherche en économie et management - UNICAEN - Université de Caen Normandie - NU - Normandie Université - UR - Université de Rennes - CNRS - Centre National de la Recherche Scientifique)

  • Hajar Hilali

    (CREM - Centre de recherche en économie et management - UNICAEN - Université de Caen Normandie - NU - Normandie Université - UR - Université de Rennes - CNRS - Centre National de la Recherche Scientifique)

  • Vincent Hovelaque

    (CREM - Centre de recherche en économie et management - UNICAEN - Université de Caen Normandie - NU - Normandie Université - UR - Université de Rennes - CNRS - Centre National de la Recherche Scientifique)

  • Vincent Giard

    (LAMSADE - Laboratoire d'analyse et modélisation de systèmes pour l'aide à la décision - Université Paris Dauphine-PSL - PSL - Université Paris Sciences et Lettres - CNRS - Centre National de la Recherche Scientifique)

Abstract
In the OCP phosphate supply chain, source ores (SOs) are extracted according to a tactical extraction programme, constrained by geological conditions that constantly limit and modify the variety of available SOs. Then SOs are blended to get merchantable ores (MOs) respecting composition constraints and ordered by internal (phosphoric acid plant) or external (export) customers. The blending process is performed in a dry blending plant, possibly followed by treatments in a washing plant which modifies the SOs weights and compositions. The choice of alternative routings and blends depends on orders book and SOs availability in the dry blending area or present on mine. To improve the performance in meeting a rolling 4-weeks orders book, a quadratic model was created and implemented. It optimises jointly: (i) for each order, the routing and the SOs quantities used in the dry blending plant; (ii) the SOs quantities transferred from the mine; (iii) security stocks to face some unforeseen change in the MO book order, and the slight instability of the SO chemical composition that triggers a SO multiplication to be contained. The performance of the linearised model has led the relevant OCP site to develop and use an extended version of this model.
(This abstract was borrowed from another version of this item.)

Suggested Citation

  • Ahlam Azzamouri & Mouna Bamoumen & Hajar Hilali & Vincent Hovelaque & Vincent Giard, 2021. "Flexibility of dynamic blending with alternative routings combined with security stocks: a new approach in a mining supply chain," Post-Print halshs-02938787, HAL.
    • Handle: RePEc:hal:journl:halshs-02938787
    DOI: 10.1080/00207543.2020.1814443
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    Cited by:

    1. Najat Bara & Frédéric Gautier & Vincent Giard, 2020. "Usage Des Pénalités Dans Les Modèles Économiques De Management Industriel," Post-Print hal-03005697, HAL.

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