Dual effects of sodium sulfide on the flotation behavior of chalcopyrite: I. Effect of pulp potential

Taheri, Bijan; Abdollahy, Mahmoud; Tonkaboni, Sied Ziaedin Shafaei; Javadian, Soheyla; Yarahmadi, Mohammadreza

doi:10.1007/s12613-014-0924-7

Cited by 19 publications

(3 citation statements)

References 30 publications

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“…Figures 8C,D show the high-resolution spectra of Fe of chalcopyrite and pyrite, respectively, whereas Table 4 presents the qualification of iron species based on Fe 2p XPS spectra. In the Fe 2p3/2 spectra, the peaks near 711 eV for Fe(III)-O and at 708 eV for Fe(II)-S, the Fe(III)-O concentration at the surface of chalcopyrite ground using ceramic balls decreased significantly from 90.96 to 86.01% (Taheri et al, 2014;Mikhlin et al, 2016;Peng et al, 2017;Rabieh et al, 2017;Cao et al, 2018). This indicates that ceramic ball grinding can reduce the adsorption of iron oxide on the surface of chalcopyrite and is conducive to the flotation of chalcopyrite.…”

Section: Xps Analysismentioning

confidence: 94%

Effect of Grinding Media on Grinding-Flotation Behavior of Chalcopyrite and Pyrite

Liao

et al. 2020

Front. Mater.

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Grinding media have significant influence on the flotation of chalcopyrite and pyrite. This effect is mainly related to the change in the surface properties of chalcopyrite and pyrite. This paper investigates the influence of steel ball and nano-ceramic ball grinding on the floatability of chalcopyrite and pyrite. Flotation results, as well-scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), ultraviolet spectrophotometer, and zeta potential measurement results indicate that nano-ceramic ball grinding is beneficial to the flotation of chalcopyrite. Flotation results also indicate that chalcopyrite has better floatability after nano-ceramic ball grinding compared with steel ball grinding. Results of adsorption experiments show that nano-ceramic ball grinding contributes to the adsorption of isobutyl xanthate to chalcopyrite. XPS and SEM techniques demonstrated that steel ball grinding easily produces oxidation species at the surface of chalcopyrite, thereby reducing its floatability. Results from this study also confirmed that steel ball grinding is beneficial to the flotation of pyrite. Therefore, nano-ceramic media grinding produces better selective flotation in chalcopyrite than steel media grinding.

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Section: Xps Analysismentioning

confidence: 94%

Effect of Grinding Media on Grinding-Flotation Behavior of Chalcopyrite and Pyrite

Liao

et al. 2020

Front. Mater.

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“…The hydrosulfide ion (HS − ), a result of the dissociation and hydrolysis of Na 2 S, removes the collector from the surface of the chalcopyrite and renders it hydrophilic [36,37].…”

Section: Cux + Hsmentioning

confidence: 99%

Reducing Negative Effects of Oxidation on Flotation of Complex Cu–Zn Sulfide Ores

Özçelik

Ekmekçi

2022

Minerals

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Surface oxidation of the sulfide minerals negatively affects the flotation performance, i.e., the selectivity and even the recoveries at heavy oxidation conditions. Oxidation may take place during the formation of the ore, during mining and stockpiling, and during the flotation process. Stockpiling of large amounts of ore is a common practice in mine sites for blending the process–plant feed. However, a long stockpiling time may cause severe surface oxidation of the complex sulfide ores, particularly the complex Cu–Zn sulfide ores containing secondary copper minerals, which resulted in loss of Cu–Zn selectivity and copper recovery. A complex Cu–Zn sulfide ore was used to investigate effects of stockpile time on flotation performance and to determine the most efficient mitigation method to restore the flotation performance. Batch-scale flotation tests were performed on a heavily oxidized sample using sulfidization, high intensity conditioning, and their combination. The results showed that sulfidization desliming and stage addition of depressants during flotation was the most effective method for producing a copper concentrate from oxidized ores.

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“…(Allison et al, 1972). Além disso foi encontrado por (Taggart, 1928) (Taheri et al, 2014;Zhu, 1981 deveram se somar +205 mV às medidas neste trabalho (Sawyer et al, 1995). TGA, quando o efeito é de ativador ao invés de depressor de calcopirita por conta da baixa recuperação de molibdenita e alta recuperação de calcopirita em concentrações de 0,1 mM de TGA.…”

Section: Caracterização Pelo Mev-edxunclassified

Flotação Seletiva Da Molibdenita Usando Ácido Cloro Acético E Tiouréia Na Depressão Da Calcopirita

SOTO¹

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Dual effects of sodium sulfide on the flotation behavior of chalcopyrite: I. Effect of pulp potential

Cited by 19 publications

References 30 publications

Effect of Grinding Media on Grinding-Flotation Behavior of Chalcopyrite and Pyrite

Effect of Grinding Media on Grinding-Flotation Behavior of Chalcopyrite and Pyrite

Reducing Negative Effects of Oxidation on Flotation of Complex Cu–Zn Sulfide Ores

Flotação Seletiva Da Molibdenita Usando Ácido Cloro Acético E Tiouréia Na Depressão Da Calcopirita

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