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Added: October 4, 20242024-10-04T07:36:36-04:00 2024-10-04T07:36:36-04:00In: General Information

Connaissez-vous le Complexe S11D Eliezer Batista de Vale à Canaã dos Carajás, Brésil?

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Le complexe S11D de Vale, situé à Canaã dos Carajás, au Brésil, est une installation minière massive qui comprend un port, un chemin de fer, une usine et une mine. La mine utilise une technologie sans camion et peut produire 90 millions de tonnes par an (MTPA). Des convoyeurs connectés qui s’étendent sur 30 km (18,6 miles) transportent les extraits directement de la mine vers l’usine de traitement. Cette nouvelle technique consomme 70 % de carburant en moins et réduit également la quantité de déchets, tels que les pneus, les filtres et les lubrifiants. Sa durée de vie est de trente ans.

Le gisement de minerai est relié à la ligne ferroviaire principale de Carajás par une voie ferrée de 101 kilomètres (63 miles). L’extension et la rénovation de la voie ferrée portent sa capacité à 230 MTPA. Selon l’Institut ILOS, c’est le chemin de fer le plus efficace du Brésil. Avec quatre locomotives et trois cent trente wagons, le train de minerai peut transporter trente-trois mille tonnes de minerai de fer. Ce chemin de fer traverse un terrain difficile, avec des sections où il y avait un risque de chute de pierres et d’autres débris sur les voies. Des filets de protection contre les chutes de pierres sont utilisés à divers endroits tout au long de l’extension afin de protéger et de contenir les roches.

Le minerai de fer à haute teneur avec une fraction ultrafine peut être recyclé et réutilisé grâce à des processus d’humidité naturelle, ce qui élimine également le besoin de bassins de décantation. On prévoit un retour de 300 MT sur la durée de vie de la mine.

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