Add time:08/27/2019         Source:sciencedirect.com

Single mineral flotation of chalcopyrite, molybdenite and pyrite with a regular collector (potassium amyl xanthate) and a selective collector (N-isopropoxypropyl-N′-ethoxycarbonyl thiourea) for chalcopyrite in both de-ionized water and synthetic sea water were investigated in this study. The results indicated a wider effective pH range for separation of pyrite from chalcopyrite and molybdenite with N-isopropoxypropyl-N′-ethoxycarbonyl thiourea than with potassium amyl xanthate in de-ionized water flotation. The separation can be achieved in low alkaline conditions only with the selective thiourea collector in synthetic sea water flotation in this study. The results of the mixed minerals flotation in synthetic sea water confirmed the successful separation of pyrite from chalcopyrite and molybdenite by N-isopropoxypropyl-N′-ethoxycarbonyl thiourea at pH 9. In addition, time-of-flight secondary ion mass spectrometry (ToF-SIMS) analysis revealed the mechanism of separation.

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