Physicochemical modeling of galena flotation system

Quantitative physico-chemical models of minimum necessary xanthenes concentration of lead sulphide complete flotation can be derived by a perfect studying of pulp ionic structure, adjusting the sulphuric ores flotation parameters and modelling of minerals selectivity variables, using thermodynamic method of analysis for defining the behaviour of lead xanthenes surface state in solution, and finally these models should be proved by experimental investigations. The optimal pH values ensuring a complete flotation of galena are agree with the potential of zero or minimum charge of its surface, and the optimal composition of the collector sorption layer consisting both of chemisorbed xanthenes and physically adsorbed dixanthenes. In additional, it was obtained quantitative models for the necessary xanthenes concentration of lead sulphide complete flotation in the case of different oxidation products of galena surface in pH values from 7.0 up to 12.0. The models derived can be used as the criteria for functional units of automation systems to control and regulate the flotation process in mineral processing plants. All these should conduct to increasing of metals extraction degree with minimum chemical reagents consumption and providing good environmental protection.