Abstract

ROMERO BONILLA, Hugo I.; ROMERO SAGBAY, Diego A.  and  REDROVAN PESANTEZ, Felipe F.. Effect of the variation of the Z6, 404 and 1208 collectors in the bulk flotation of pyrite and auriferous arsenopyrite. Rev. Bol. Quim [online]. 2019, vol.36, n.2, pp.73-82. ISSN 0250-5460.

Abstract The objective of the present investigation was to determine the influence that the types of manifold mix had: (potassium ammonium xanthate Z6 primary collector + dithiophosphate 404 secondary collector) and (Z6 + dithiophosphate 1208 secondary collector) at different dosages in the flotation cell : 100% (normally used in the process); 50% and 150% in relation to the activator CuSO4.5H2O and the sparkling 350, in the percentage of gold recovery. Secondary collector concentrations of 10% and 100% purity were used. The percentage of the solid pulp of the mineral was also evaluated (27%, 30%, 33%, and 37%). Gold recovery was determined by measuring its concentration by atomic absorption spectrophotometry. It was determined that with 33% solids in the pulp, there is the highest percentage of gold recovery. Likewise, the replacement of the secondary dithiophosphate 404 collector with the dithiophosphate 1208 provided better recovery results when they were added at 10% and 100% purity concentrations. Additionally, it was possible to demonstrate that with the reduction of the amount of the Z6 collector and the activator, greater recovery was achieved with 100% dosage, which is what is normally used in the beneficiary plant where the experimentation was performed. Finally, it was statistically determined that the type of secondary collector does not influence the recovery percentage (p-value> 0.05). Whereas, there is an influence (p-value <0.05) of the percentage of solids in the pulp in the recovery percentage of this metal

Keywords : Collector; Gold recovery; Percentage of pulp solids.

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