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Article Dans Une Revue International Journal of Production Research Année : 2023

Integrated scheduling of a multi-site mining supply chain with blending, alternative routings and co-production

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.
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Dates et versions

halshs-03612471 , version 1 (27-04-2022)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

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Hajar Hilali, Vincent Hovelaque, Vincent Giard. Integrated scheduling of a multi-site mining supply chain with blending, alternative routings and co-production. International Journal of Production Research, 2023, 61 (6), pp.1829-1848. ⟨10.1080/00207543.2022.2049909⟩. ⟨halshs-03612471⟩
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