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dc.contributor.authorAzzamouri, Ahlam
dc.contributor.authorBamoumen, Mouna
dc.contributor.authorHilali, Hajar
dc.contributor.authorHovelaque, Vincent
hal.structure.identifierLaboratoire d'analyse et modélisation de systèmes pour l'aide à la décision [LAMSADE]
dc.contributor.authorGiard, Vincent
dc.subjectDynamic blendingen
dc.subjectalternative routingsen
dc.subjectsafety stocken
dc.subjectrisk managementen
dc.titleFlexibility of dynamic blending with alternative routings combined with security stocks: a new approach in a mining supply chainen
dc.typeArticle accepté pour publication ou publié
dc.description.abstractenIn 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.en
dc.relation.isversionofjnlnameInternational Journal of Production Research
dc.relation.isversionofjnlpublisherTaylor & Francisen
dc.subject.ddclabelGestion des stocksen

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