Lead sulphate leaching by sodium chloride solution

Bioleaching treatment of complex multi-metallic Cu-Zn-Pb-Ag-Au mineral concentrates leds to the formation, besides easily soluble zinc and cooper sulphates, of hardly soluble lead (II) sulfate (PbSO4) sludge. To determine the leaching parameters of PbSO4 with NaCl in the bioleaching residue, lead su...

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Published inHemijska industrija Vol. 67; no. 3; pp. 485 - 494
Main Authors Conic, Vesna, Pesovski, Branka, Cvetkovski, Vladimir, Stanojevic-Simsic, Zdenka, Dragulovic, Suzana, Simonovic, Danijela, Dimitrijevic, Silvana
Format Journal Article
LanguageEnglish
Published Belgrade Hemijska Industrija 2013
Association of Chemical Engineers of Serbia
Subjects
Bacterial leaching
biohydrometallurgy
complex concentrates
Copper
Gold
Leaching
Lead
lead(II)- sulfate
non-ferrous metals
Phase ratio
precious metals
Process parameters
Silver
Sludge
Sodium chloride
Temperature
Zinc
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Summary:Bioleaching treatment of complex multi-metallic Cu-Zn-Pb-Ag-Au mineral concentrates leds to the formation, besides easily soluble zinc and cooper sulphates, of hardly soluble lead (II) sulfate (PbSO4) sludge. To determine the leaching parameters of PbSO4 with NaCl in the bioleaching residue, lead sulphate solution was synthetically prepared. The effect of process parameters, namely NaCl concentration, solid:liquid phase ratio, processing time, temperature and Cl ions was examined. It was found that 100% Pb by leaching can be achieved with NaCl concentration of 250 g/dm3, time 20 min, temperature 353 K and solid:liquid phase ratio =1:20. nema
ISSN:0367-598X
2217-7426
DOI:10.2298/HEMIND120503096C