INTENSIFICATION OF THE PROCESS OF BENEFICIATION OF MINERALS BY VIBRATION-IMPACT ACTIVATION
Yu. Svietkina, O. V. Fedoskina
Dnipro University of Technology, Dnipro, Ukraine
Emails: svietkina.o.y@nmu.one, fedoskina.ev@gmail.com
Corresponding author: svietkina.o.y@nmu.one
ABSTRACT. Experimental data are presented on the use of vertical vibrating mills (MVV) for the preparation of mineral feedstock for the beneficiation process. The influence of optimising the vibro-impact loading process on the parameters of the mineral beneficiation process is examined. Galena (PbS) was selected as the experimental sample. This is because the surface energy characteristics of PbS depend on the number and nature of defects in the crystal lattice, which is a key feature of material activation in MVV. The relationship between the degree of liberation (f) and the technological parameters of grinding in the vibro-mill (vibro-impact loading dose (D) and collision velocity (Vimp)) is demonstrated. It has been found that even a slight change in the interplanar distances between atoms in the crystal lattice and the presence of a small number of impurity atoms of a foreign element significantly affect the chemical and adsorption activity of this mineral particle with respect to the components of the pulp’s liquid phase and, ultimately, — the flotation activity.
Key words: mechanochemistry, beneficiation, vertical vibrating mill, galena
DOI: https://doi.org/10.58903/MPIG2664
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