Selective depression of sphalerite by combined depressant K 3[Fe(CN) 6], ZnSO 4, and Na 2CO 3 in Pb–Zn sulfide flotation separation Original Paper First Online: 26 July 2019 Abstract
The depression performance and mechanism of the combined depressant containing potassium ferricyanide (K
3[Fe(CN) 6]), zinc sulfate (ZnSO 4), and sodium carbonate (Na 2CO 3) with potassium isobutyl xanthate (PPBX) as the collector in a mixed Pb–Zn sulfide flotation system were investigated using microflotation experiments, contact-angle experiments, adsorption capacity experiments, and scanning electron microscopy (SEM)–energy-dispersive spectroscopy (EDS) analysis. The microflotation results indicated that the combined depressant has a significant selective depression effect on sphalerite but a small effect on galena. When the dosages of K 3[Fe(CN) 6], ZnSO 4, and Na 2CO 3 were 1.8 × 10 −5 mol/L, 8 × 10 −5 mol/L, and 2.4 × 10 −4 mol/L, respectively, the recovery of galena was 92.56%, whereas that of sphalerite (Pb 2+ activation) was only 7.65%. The contact-angle experiment indicated that the order of the single depression effect was as follows: K 3[Fe(CN) 6] > ZnSO 4 > Na 2CO 3. The depression effect of the combined depressant was significantly better than the single depression effect. Adsorption capacity results demonstrated that after depressant addition, the decreasing order of xanthate adsorption capacity was as follows: ZnSO 4 + Na 2CO 3 > K 3[Fe(CN) 6] + Na 2CO 3 > K 3[Fe(CN) 6] + ZnSO 4 > K 3[Fe(CN) 6] + ZnSO 4 + Na 2CO 3. Scanning electron microscopy–energy-dispersive spectroscopy results showed that depression of sphalerite (Pb 2+ activation) by the combined depressant generated numerous precipitates. Keywords Depressant Potassium ferricyanide Sphalerite Galena Pb–Zn separation Notes Publisher's Note
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Bessiere J, Chlihi K, Thiebaut JM, Roussy G (1990) Dielectric study of the activation and deactivation of sphalerite by metallic ions. Int J Miner Process 28:1–13.
https://doi.org/10.1016/0301-7516(90)90024-S CrossRef Google Scholar
Cao M, Liu Q (2006) Reexamining the functions of zinc sulfate as a selective depressant in differential sulfide flotation—the role of coagulation. J Colloid Interface Sci 301:523–531.
https://doi.org/10.1016/j.jcis.2006.05.036 CrossRef PubMed Google Scholar
Chandra AP, Gerson AR (2009) A review of the fundamental studies of the copper activation mechanisms for selective flotation of the sulfide minerals, sphalerite and pyrite. Adv Colloid Interf Sci 145:97–110.
https://doi.org/10.1016/j.cis.2008.09.001 CrossRef Google Scholar
Chandraprabha MN, Natarajan KA (2006) Surface chemical and flotation behaviour of chalcopyrite and pyrite in the presence of
. Hydrometallurgy 83:146–152.
https://doi.org/10.1016/j.hydromet.2006.03.021 CrossRef Google Scholar
Chen Y, Chen JH (2010) The first-principle study of the effect of lattice impurity on adsorption of CN on sphalerite surface. Miner Eng 23:676–684.
https://doi.org/10.1016/j.mineng.2010.04.002 CrossRef Google Scholar
Dávila-Pulido GI, Uribe-Salas A, Espinosa-Gómez R (2011) Comparison of the depressant action of sulfite and metabisulfite for Cu-activated sphalerite. Int J Miner Process 101:71–74.
https://doi.org/10.1016/j.minpro.2011.07.012 CrossRef Google Scholar
Finkelstein NP (1997) The activation of sulphide minerals for flotation: a review. Int J Miner Process 52:81–120.
https://doi.org/10.1016/S0301-7516(97)00067-7 CrossRef Google Scholar
Fuerstenau M, Clifford K, Kuhn M (1974) The role of zinc–xanthate precipitation in sphalerite flotation. Int J Miner Process 1:307–318.
https://doi.org/10.1016/0301-7516(74)90002-7 CrossRef Google Scholar
Gerson AR, Lange AG, Prince KE, Smart RSC (1999) The mechanism of copper activation of sphalerite. Appl Surf Sci 137:207–223.
https://doi.org/10.1016/S0169-4332(98)00499-1 CrossRef Google Scholar
Houot R, Raveneau P (1992) Activation of sphalerite flotation in the presence of lead ions. Int J Miner Process 35:253–271.
https://doi.org/10.1016/0301-7516(92)90037-W CrossRef Google Scholar
Huang P, Cao ML, Liu Q (2013) Selective depression of sphalerite by chitosan in differential Pb–Zn flotation. Int J Miner Process 122:29–35.
https://doi.org/10.1016/j.minpro.2013.04.010 CrossRef Google Scholar
Khmeleva TN, Skinner W, Beattie DA (2005) Depressing mechanisms of sodium bisulphate in the collectorless flotation of copper–activated sphalerite. Int J Miner Process 76:43–53.
https://doi.org/10.1016/j.minpro.2004.10.001 CrossRef Google Scholar
Khmeleva TN, Chapelet JK, Skinner WM, Beattie DA (2006) Depression mechanisms of sodium bisulphite in the xanthate-induced flotation of copper activated sphalerite. Int J Miner Process 79:61–75.
https://doi.org/10.1016/j.minpro.2005.12.001 CrossRef Google Scholar
Laskowski JS, Liu Q, Zhan Y (1997) Sphalerite activation: flotation and electrokinetic studies. Miner Eng 10:787–802.
https://doi.org/10.1016/S0892-6875(97)00057-5 CrossRef Google Scholar
Liu J, Wang Y, Luo DQ, Zeng Y (2018) Use of ZnSO
and SDD mixture as sphalerite depressant in copper flotation. Miner Eng 121:31–38.
https://doi.org/10.1016/j.mineng.2018.03.003 CrossRef Google Scholar
Prestidge CA, Skinner WM, Ralston J, Smart RSC (1997) Copper (II) activation and cyanide deactivation of zinc sulphide under mildly alkaline conditions. Appl Surf Sci 108:333–344.
https://doi.org/10.1016/S0169-4332(96)00681-2 CrossRef Google Scholar
Rao SR, Nesset JE, Finch JA (2011) Activation of sphalerite by Cu ions produced by cyanide action on chalcopyrite. Miner Eng 24:1025–1027.
https://doi.org/10.1016/j.mineng.2011.04.018 CrossRef Google Scholar
Rashchi F, Sui C, Finch JA (2002) Sphalerite activation and surface Pb ion concentration. Int J Miner Process 67:43–58.
https://doi.org/10.1016/S0301-7516(02)00005-4 CrossRef Google Scholar
Shall HEE, Elgillani DA, Khalek NAA (2000) Role of zinc sulfate in depression of lead-activated sphalerite. Int J Miner Process 58:67–75.
https://doi.org/10.1016/S0301-7516(99)00055-1 CrossRef Google Scholar
Sui CC, Lee D, Casuge A, Finch JA (1999) Comparison of the activation of sphalerite by copper and lead. Miner Metall Proc 16:53–61.
https://doi.org/10.1007/BF03402820 CrossRef Google Scholar Copyright information
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