Bonification process through flotation of phosphated ores...

B - Operations – Transporting – 03 – D

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361/17

B03D 1/02 (2006.01)

Patent

CA 1040755

PRECIS DE LA DIVULGATION: Procédé de valorisation, par flottation, des minerais de phosphates à gangue carbonatée, ou contenant des carbonates. Conformément à l'invention, l'on réalise la séparation des phosphates et des carbonates que contient le minerai à traiter, en soumettant celui-ci à un traitement de flottation inversée, à l'aide d'une association de réactifs comprenant un collecteur de flottation des carbonates, et des agents de modification de propriétés physico-ohimiques superficielles des particules phosphatées, qui dépriment ces dernières. Application à l'en- richissement de minerais de phosphates sédimentaires et cristal- lins à gangue contenant des carbonates ainsi qu'éventuellement des silicates et des silico-aluminates.

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