Titre du document / Document title
Removal of lead minerals from copper industrial flotation concentrates by xanthate flotation in the presence of dextrin
Auteur(s) / Author(s)
DRZYMALA Jan (1) ;
KAPUSNIAK Janusz (2) ;
TOMASIK Piotr (3) ;
Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)
(1) Institute of Mining Engineering, Technical University of Wroclaw, Wybrzeze Wyspianskiego 27, 50-370 Wrocław, POLOGNE
(2) Institute of Chemistry and Environmental Protection, University of Education, Armii Krajowej 13/15, 42-201 Czestochowa, POLOGNE
(3) University of Agriculture, Mickiewicza Avenue 21, 30-120 Cracow, POLOGNE
Résumé / Abstract
Potato starch and dextrins resulting from thermolysis of potato starch in the absence of reagents and presence of L-amino acids are promising depressants for separation of lead and copper minerals present in the Polish industrial copper concentrates. The polysaccharides were used for differential xanthate flotation of the final industrial concentrates produced by flotation with sulfhydryl collectors in the absence of depressants. The polysaccharides depressed galena and provided froth concentrate rich in chalcocite and other copper minerals as well as cell product containing lead minerals. The best results of separation were obtained in the presence of plain dextrin prepared by a thermal degradation of potato starch. The industrial concentrate containing 18.5% Cu and 5.5% Pb was divided into a froth product containing 38. 1% Cu with 77% recovery of copper and a cell product assaying 7.3% Pb with 83% recovery of lead. It was accomplished using 2500 g/t of dextrin, 50g/t of potassium ethyl xanthate, and 50 g/t of frother (α-terpineol). The pH of flotation was 8.0 -8.2.
Revue / Journal Title
International journal of mineral processing
ISSN
0301-7516
CODEN IJMPBL
Source / Source
2003, vol. 70, n
o1-4, pp. 147-155 [9 page(s) (article)] (21 ref.)
Langue / Language
Anglais
Editeur / Publisher
Elsevier, Amsterdam, PAYS-BAS
(1974)
(Revue)
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Localisation / Location
INIST-CNRS, Cote INIST : 15980, 35400011299907.0100
Nº notice refdoc (ud4) : 15118323
