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Traitement des phosphates de Bled El Hadba

Traitement des phosphates de Bled El Hadba

Nacer BEZZI

105,32 €
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2025
Materia
Ciencia: cuestiones generales
ISBN:
9786208980573
105,32 €
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La mine de Bled El Hadba est l’une des plus grandes réserves de phosphates en Algérie, avec un potentiel de plus de 800 millions de tonnes. L’année 2024 a été marquée par le début de sa première phase d’exploitation. Son faisceau phosphaté de 30 m d’épaisseur, comprend la superposition de trois couches de phosphates bien distinctes sur les plans chimique, minéralogique et pétrographique. Ainsi, il est nécessaire de prendre en compte les caractéristiques de chacune d’elles et non pas de faire une moyenne. La caractérisation par différentes techniques (DRX, FX, MEB, BET, ATG, etc.) a permis de définir les mailles de libération optimales des éléments phosphatés, d’identifier les phases minéralogiques existantes, de suivre l’évolution de la composition chimique en fonction de la taille des grains et d’évaluer le comportement thermique des carbonates dolomitiques. Ces données sont des outils précieux pour la mise au point d’un procédé de traitement approprié. Les essais de traitement parcalcination et par flottation ont abouti à des performances prometteuses en termes de séparation des phosphates de la gangue carbonatée.

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