Integrated scheduling of a multi-site mining supply chain with blending, alternative routings and co-production
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2023
- ISIDORE Id: 10670/1.4025d6...
- halshs: halshs-03612471
- doi: 10.1080/00207543.2022.2049909
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info:eu-repo/semantics/altIdentifier/doi/10.1080/00207543.2022.2049909
http://creativecommons.org/licenses/by-nc/ , info:eu-repo/semantics/OpenAccess
Mots-clés
Integrated scheduling multi-site blending alternative routings co-production mining supply chainSujets proches
BlendingCiter ce document
Hajar Hilali et al., « Integrated scheduling of a multi-site mining supply chain with blending, alternative routings and co-production », HAL SHS (Sciences de l’Homme et de la Société), ID : 10.1080/00207543.2022.2049909
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Résumé
This paper proposes a multi-site global optimisation model of blending operations, alternative routings and order scheduling with a co-production flow. It is performed in a phosphoric supply chain owning three open-pit mines of different geological structures and chemical compositions, each having a dry blending plant. One main challenge of the phosphate industries is to produce merchantable ores (MO) that verify a quality charter (chemical composition) with chemical heterogeneous source ores (SO). Thus, a process of SO blending followed by a treatment is mostly necessary to obtain the required MO. Six alternative routings exist to produce an MO; one of them involving a calcination plant generates a co-product. The model objective is to determine the least costly production programme of a set of MO orders to be delivered within precise time windows, in given quantities and compliance with a specific quality charter, by assigning for each MO its blending plant, routing, blend of SOs and production schedule; it also defines the feeding of the blending plants. A real case study illustrates the proposed model.
