· In copper-gold flotation plants, pyrite which is depressed in copper flotation is often floated subsequently with the addition of sodium sulfide (Na 2 S) to recover the associated gold. For the first time, this study investigated the role of Na 2 S responsible for the flotation of pyrite depressed in chalcopyrite flotation through flotation tests and
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· The mechanism of sodium sulfide (Na 2 S) on the flotation of cyanide-depressed pyrite using potassium amyl xanthate (PAX) as collector was investigated by flotation test and electrochemical measurements. The flotation results show that both PAX and Na 2 S can promote the flotation recovery of cyanide-depressed pyrite and their
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· The depression performance and mechanism of the combined depressant containing potassium ferricyanide (K3[Fe(CN)6]), zinc sulfate (ZnSO4), and sodium carbonate (Na2CO3) with potassium isobutyl xanthate (PPBX) as the collector in a mixed Pb–Zn sulfide flotation system were investigated using microflotation experiments,
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· DOI: 10.1016/j.apsusc.2019.145042 Corpus ID: 214351760 Enhancing flotation separation of chalcopyrite and galena by the surface synergism between sodium sulfite and sodium lignosulfonate @article{Liu2020EnhancingFS, title={Enhancing flotation separation of
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· The experimental results clearly demonstrated that sodium sulfite acting in the form of SO32− at pH range 6–8 was more selective adsorbed on almandine surface compared to that of rutile, leading to a high selectivity for the flotation of
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· The optimum conditions for flotation separation of chalcopyrite from the Cu-Zn sulfide were as follows: combined depressant dosage of 10⁻⁴ mol/L (ZnSO4: SDD = 3:1), BX dosage of 10⁻⁵ mol/L
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· In this research, flotation of copper, lead and zinc minerals from a copper oxide–sulfide ore was studied. The identification tests showed that the sample is a mixture of quartz, chalcopyrite, galena, cerussite, hemimorphite and iron oxide minerals with 5.04% CuO, 1.61% PbO, 2.07% ZnO and 56.40% SiO2. The experimental design methodology
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· Micro-flotation tests indicated that sodium sulfide had excellent depressing effect on the bismuthinite in alkaline condition. The recovery of bismuthinite dramatically decreased from 86.7% to 16.5% with the concentration of sodium sulfide increased to 1
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· Chalcopyrite recovery remained above 80% throughout the sodium sulfite dosage range and sodium silicate (0–1000 mg/L). However, the recovery of galena decreased progressively with the increase of the depressant, both sodium sulfite, and silicate, achieving a maximum separation of chalcopyrite and galena at 82.4% and
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· In contrast, the Zn 2p and S 2p peak heights were greatly reduced, indicating that the adsorption of SA covered the Zn and S atoms to a great extent. It is also worth noting that the binding energies of Zn 2p changed significantly (from 1021.83 to 1021.68 eV and from 1044.78 to 1044.58 eV) as SA was adsorbed on the marmatite
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DOI: 10.1016/j.mineng.2022.107696 Corpus ID: 250126961 Application and depression mechanism of sodium sulfite on galena-pyrite mixed concentrate flotation separation: Huize Lead-Zinc Mine, China, as an example @article{Pan2022ApplicationAD, title
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· Selective floatation of base metal sulphide minerals can be achieved by using selective reagents. Sequential floatation of chalcopyrite–sphalerite from Taknar (Iran) massive sulphide ore with 3.5 % Zn and 1.26 % Cu was studied. D-optimal design of response surface methodology was used. Four mixed collector types (Aer238 + SIPX,
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· Cu-Pb-Zn sulfide minerals are generally processed via two flotation stages whereby Cu- and Pb-sulfide minerals are first recovered, followed by floating Zn-sulfide minerals []. When anglesite is contained
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:Chalcopyrite and PyriteChalcopyrite OreChalcopyrite On Calcite · In the lead flotation, certain amounts of depressants (zinc sulphate 400 g/ton and sodium cyanide 50 g/ton with 5 min conditioning), collector (PEX 40 g/ton or
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· Furthermore, the adsorption mechanism of [Zn(H2O)5]2+ on a sphalerite (110) surface is mainly via the hybridization of Zn 3d orbital in the structure of [Zn(H2O)5]2+ with surface S 3p orbitals.
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:Oxidation of Zn in Znso4Znso4 PhZnso4 Density · The flotation separation of chalcopyrite and talc can be achieved at pH 6–12 using the combined depressant of CLS and calcium ions. [] Collector: butyl
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· Flotation depressant is a flotation regulator that enhances the hydrophilicity of the mineral surface and destroys or weakens the adsorption of collector on minerals. Flotation depressants are generally classified into inorganic depressant and organic depressant. Inorganic depressants mainly include lime, zinc sulfate, sulfur dioxide,
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:SphaleriteZnso4 · Sodium sulfite (Na 2 SO 3) is an inorganic depressant commonly used in the flotation of sulfide minerals (Lin et al., 2018, Shen et al., 2001, Zhou et al., 1997).
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· The Huize super-large Pb-Zn deposits of Yunnan Province, China are characterized by high Pb-Zn grade (Pb + Zn mostlyhigher than 25–35%) and the abundance of associated useful elements (Ag, Ge
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· Selective depression of sphalerite by combined depressant K3 [Fe (CN)6], ZnSO4, and Na2CO3 in Pb–Zn sulfide flotation separation. The depression performance and mechanism of the combined depressant containing potassium ferricyanide (K3 [Fe (CN)6]), zinc sulfate (ZnSO4), and sodium carbonate (Na2CO3) with potassium isobutyl….
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· Potassium dichromate and sodium sulfite are the most widely used inorganic galena depressants, but they have obvious disadvantages. Show abstract In the flotation separation of copper-lead–zinc complex polymetallic sulphide ores, the separation of chalcopyrite from galena is difficult because both of them have good floatability.
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· Effect of ZnSO 4 and SDD dosage. In the case of the combined use of ZnSO 4 and SDD, the dosage has a significant influence on the depression performance of sphalerite in the mixed Cu-Zn sulfide flotation system. Thus, the dosage of ZnSO 4 and SDD was firstly investigated in the present study, with the results shown in Figs. 2 (a) and 3 (a).
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:Publish Year:2021 · Sulfidation is a widely used technology to improve the floatability of oxidized metal minerals or to stabilize the heavy metals in various wastes. The sulfidation mechanism of ZnO with pyrite was
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· The use of sodium sulfite in the flotation of sulfide ores using a dialkyl-thionocarbamate as collector enables us to obtain, Average content was 3.0% Cu, 3.5% Pb, 12.6% Zn and 18.0% Fe. It had a medium texture with the advantage of
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· In the presence of sulfite, the solution redox potential may be reduced, decomposition of xanthate and formation of perxanthate may occur along with surface complexation of lead sulfite. In the addition of sodium sulfide results in reducing potentials and the chemisorption of xanthate is inhibited, and Pb(EX) 2 is decomposed.
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Relationship between Cu recovery and Zn recovery in flotation experiments with sodium sulfite 20 kg/t. While El-Shall et al. (2000) [25] and Basilio et al. (1996) [43] estimated the
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DOI: 10.1016/s1003-6326(20)65400-0 Corpus ID: 225256933 Synergistic depression mechanism of zinc sulfate and sodium dimethyl dithiocarbamate on sphalerite in Pb−Zn flotation system @article{Cui2020SynergisticDM, title={Synergistic depression mechanism
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· Sodium silicateSodium silicate (s), also known as “water glass”, are one of the oldest and most widely used industrial chemicals. Its first use in Canadian operations can be traced back to around 1925, which coincided with early use of xanthates in
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· Sulfite, sodium sulfite and polyphosphates could also depress galena but they have high requirements for the flotation operating conditions (Dávila-Pulido et al., 2011). Lime exhibits few negative effects on the environment and is mostly used reagents in polymetallic sulfide flotation plants but its usage is always dependent of the collector type
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· The Fe-substituted sphalerite surface primarily adsorbs DL-cysteine through interactions with -SH and –NH 2 groups on Fe ions, in contrast to those on Zn ions. Analyses of the partial density of states and charge transfer confirm the spatial and orbital compatibility in the system.
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