The main objective of this research work was to optimize the recovery and quality of silver concentrates by means of flotation of the Pasivos Ambientales mining company, using statistical software with which the optimal values of the independent variables such as Collector Z -11 (Sodium Isopropyl Xanthate), pH water and flotation pH medium, after running a 23 factorial model with three replicates in the center, the following equations were determined.Silver Concentrate Quality = 185724.16-29473.9*pHwater – 26526.5*pHmedium + 23.4718*Colector + 4210.56*pHwater*pHmedium Silver Recovery = -12180.57+ 1942.94*pHwater + 1748.64*pHmedium + 127425*Colector -277.5625*pHwater*pHmedium According to equation, the quality of the concentrate was able to determine the optimal values of pH water 6.5, pH medium 7.1 and Collector Z-11 20% with a law of 620,119 oz/Tc.With the equation of the recovery cou...

The objective of this work is the design of a prototype of a pneumatic centrifugal concentrator that allows small-scale mining that takes place in desert and isolated places, to process ultrafine gold minerals in situ, cleanly, without the use of water and chemical reagents. A mathematical model based on the physico-phenomenological analysis of the differential sedimentation separation mechanism was applied in a film of laminar flow fluid, to determine the particle trajectory inside the bowl of the centrifugal concentrator as a function of the variables of bowl geometry, operating variables and physical characteristics of the particle and fluid. The simulations carried out showed a remarkable effect of the use of air instead of water on the trajectory of the particles within the fluid film. The results also showed that the capacity of the concentrator for the separation of particles by d...