Regresar

Bubbles size distribution in mechanical flotation cells at laboratory and industrial scale and modeling of the effects of the operating variables

Abstract:

In this work, bubble size distribution in a flotation cell, in both industrial and laboratory scale, are characterized. Experimentally, bubbles are sampled, their sizes are measured using image analysis and their distributions are expressed by surface. The distributions are represented with a unique model structure for all tests, either in industrial or laboratory scale, only with different values in the parameters model. In the industrial case, with data reported in the literature as well as with experimental data obtained by the authors, the proposed model is fitted with correlation coefficients higher than 84 % In the lab, the effects of the operational variables Jg y N s on the parameters d50 y l are modeled. From the experimental study at laboratory scale it is possible to conclude that combinations of Ns y Jg allow producing different bubble size distributions.