Accéder directement au contenu Accéder directement à la navigation
Communication dans un congrès

A circular economy classification of mine waste

Abstract : Circular economy is a framework for an array of critical changes in the global economy trends, aimed at reducing its pressure on the Earth's resources, on the environment and on the climate. A continuous decrease is observed in minable grades for most commodities, implying that waste rates increase in ore beneficiation. The move from underground to open pit extraction increases also massively the amount of waste rock. Waste is one of the biggest costs and burdens of mining. A systematic increase of waste recycling, reducing together the need in primary resources and the waste generation, is critical for mining future. Waste reprocessing aims at better recovery of primary commodities, recovery of overlooked or critical metals, and extracting reusable mineral fractions. Recovery and reuse do not always pay for themselves but reduce the cost of site remediation. Mine waste has a higher sustainability potential when compared with mineral extraction, especially in energy and land use. It however often contains residual metals and undesirable or potentially toxic elements. Reuse options for residual mineral fractions include civil engineering, cement and building materials. Waste classification by hazardousness or by ore grade is not suitable for their development. A new classification is proposed for reusable mineral fractions, based on physical and chemical properties and on suitability for the main potential applications.
Type de document :
Communication dans un congrès
Liste complète des métadonnées

https://hal-brgm.archives-ouvertes.fr/hal-01839205
Contributeur : Bruno Lemiere <>
Soumis le : vendredi 13 juillet 2018 - 20:46:21
Dernière modification le : jeudi 2 avril 2020 - 10:46:02
Archivage à long terme le : : lundi 15 octobre 2018 - 19:19:37

Fichiers

RFG1505.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

  • HAL Id : hal-01839205, version 1

Collections

Citation

Bruno Lemiere. A circular economy classification of mine waste. Resources for Future Generations - RFG2018, Jun 2018, Vancouver, Canada. ⟨hal-01839205⟩

Partager

Métriques

Consultations de la notice

44

Téléchargements de fichiers

18