Influence of physical and chemical factors on acid digestion of Zn-Pb flotation tailings
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Silesian University of Technology
Publication date: 2007-01-01
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Małgorzata Pacholewska   

Silesian University of Technology, Faculty of Materials Engineering and Metallurgy, 40-019 Katowice, ul. Krasińskiego 8
Physicochem. Probl. Miner. Process. 2007;41(1):167-176
The acid digestion of flotation tailings from Zn-Pb ore enrichment in the Boleslaw Mine and Metallurgical Plant was aimed at their initial chemical reusing by neutralization of alkaline components of gangue and potential recovery of magnesium compounds from filtrates after acid digestion. The nature of the research was explanatory and the obtained leaching residues will constitute a raw material in flotation tailings bioleaching in the presence of acidophilic microorganisms. The article presents the results of the research regarding the influence of physicochemical factors (H2SO4 concentration, time, temperature, the ratio of solid phase to liquid phase) on the leaching rate of magnesium, zinc, cadmium, iron and lead by acid digestion of flotation tailings as well as the characteristics of solid leaching residues and magnesium compounds obtained by the concentration and crystallization of the filtrate.
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