Effect of the chloride content of seawater on the copper solvent extraction using Acorga M5774 and LIX 984N extractants

Mahmoudi, Alireza; Shakibania, Sina; Rezaee, Sadegh; Mokmeli, Mohammad

doi:10.1016/j.seppur.2020.117394

Cited by 18 publications

(6 citation statements)

References 17 publications

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“…Hydrometallurgy is an important technique used in mineral processing to obtain pure metal from ores. The hydrometallurgical route commonly involves ore leaching, solvent extraction (SX), and pure metals' electrowinning [1][2][3]. SX is a technique with several advantages, it is a continuous operation, efficient, high production, low cost, and employs of simple equipment to recover valuable elements from impurities [4,5].…”

Section: Introductionmentioning

confidence: 99%

Extraction of Cu(II), Fe(III), Zn(II), and Mn(II) from Aqueous Solutions with Ionic Liquid R4NCy

Castillo

Toro

Hernández

et al. 2021

Metals

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The leaching of copper ores produces a rich solution with metal interferences. In this context, Fe(III), Zn(II), and Mn(II) are three metals contained in industrial copper-rich solutions in high quantities and eventually can be co-extracted with the copper. The purpose of the current study was to determine the feasibly of solvent extraction with the use of ionic liquid methyltrioctyl/decylammonium bis (2,4,4-trimethylpentyl)phosphinate (R4NCy) as an extractant of Cu(II) in the presence of Fe(III), Zn(II), and Mn(II). In general terms, the results showed a high single extraction efficiency of all the metals under study. In the case of Fe(III) and Zn(II), the extraction was close to 100%. On the contrary, the stripping efficiency was poor to Fe(III) and discrete to Zn(II), but very high to Cu(II) and Mn(II). Finally, the findings of this study suggest that the ionic liquid R4NCy is feasible for the pre-treatment of the copper solvent extraction process to remove metal impurities such as Fe(III) and Zn(II).

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Section: Introductionmentioning

confidence: 99%

Extraction of Cu(II), Fe(III), Zn(II), and Mn(II) from Aqueous Solutions with Ionic Liquid R4NCy

Castillo

Toro

Hernández

et al. 2021

Metals

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“…Acid leaching in solutions with seawater show better copper extraction kinetics; however, the presence of ions such as Cl -, Na + , Mg 2+ , K + , and Ca 2+ could affect the efficiency of subsequent processes such as SX. Mahmoudi et al (2020) conducted SX testwork with seawater, using LIX 984N and Acorga M5774 as extractants. Between pH values of 0.5 and 1.5, LIX 984N achieved a greater extraction of copper from solutions that contained at least 20 g/L chloride ion.…”

Section: Seawater In the Solvent Extraction Processmentioning

confidence: 99%

The use of seawater in copper hydrometallurgical processing in Chile: A review

Astudillo,

Garcia,

Quezada

et al. 2023

J. S. Afr. Inst. Min. Metall.

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Seawater has become a viable alternative for different uses in copper hydrometallurgy. In this paper we review the main physical and chemical characteristics of seawater and how these influence copper production. Reliable data on the use of continental water are reported, and the current use and consumption of seawater in the Chilean mining industry is analysed, indicating the main areas of use and the main problems encountered. Additionally, the influence of the elements in seawaterthat have the most influence on the extractive metallurgy of copper are considered. The Chilean copper mining industry currently consumes approximately 4.1 m3/s of seawater, which corresponds to 25% of the total water used. The use of seawater for the leaching of copper sulphide minerals, such as chalcopyrite, is beneficial because it provides 20 g/L of chloride, thereby improving copper dissolution kinetics.

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“…They were trying to understand the role and effect of influencing parameters like pH of solution and type and concentration of extractant [10,11]. For example, acidic extractants (Cyanex 302 [12], D2EHPA [13], and Cyanex 272 [14]) and chelating extractants (LIX 984N [15], LIX 63 [16], and LIX 84 [17]) have been used for this purpose. Di-2ethyl hexyl phosphoric acid (D2EHPA) as a classical extractant, has been widely used in extraction and separation of the divalent transition metals such as zinc, manganese, nickel, cobalt and copper [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation and Thermodynamic Modeling of Zn+2 and Ni+2 Extraction from Zn Plant Residue using D2EHPA

Mohammadzadeh,

Bagheri,

Ghader

2023

IJE

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Zinc plant filter cake contains valuable metals that can be reused as a source for obtaining these metals. This study describes an experimental two stage study on the extraction of zinc and nickel from waste zinc filter cake which includes acid leaching of zinc filter cake followed by organic phase aided extraction of metals from the leaching solution. To determine the optimum leaching condition a comprehensive study of the recovery of chemical elements from spent plant residues was experimentally studied at different levels of acid concentrations at different temperatures while measuring chemical elements concentration with respect to time. Experimental results showed that 99% recovery of Ni 2+ , Zn 2+ and 89% recovery of Pb 2+ can be achieved at following optimum conditions: 2M nitric acid, T= 358.15 K after 1.5 h of acid leaching at S/L=1/10. Then, the extraction of Zn 2+ , Ni 2+ , and Pb 2+ was carried out by di-(2-ethylhexyl) phosphoric acid (D2EHPA) that was diluted with kerosene in equal phase ratio and the effect of extractant concentration and pH was studied at T = 298.15 K. Results showed that an increase in pH and extractant concentration can greatly increase zinc and nickel extraction to a maximum achievable amount of 95% and 90 % for Zn 2+ and Ni 2+ , respectively by 25 (v/v%) D2EHPA at pH = 5.5 and organic to aqueous phase ratio (O/A) = 1/1. For modeling of equilibrium concentrations in organic and aqueous phases and activity coefficients calculation, Electrolyte-UNIQUAC-NRF, UNIQUAC-NRF, NRTL and NRTL-based local composition models were used. After that, adjusted parameters were successfully used for calculation of the equilibrium constant of the unknown parameters and the extraction reaction. The obtained results of thermodynamic modeling were in well agreement with the experimental data.

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Effect of the chloride content of seawater on the copper solvent extraction using Acorga M5774 and LIX 984N extractants

Cited by 18 publications

References 17 publications

Extraction of Cu(II), Fe(III), Zn(II), and Mn(II) from Aqueous Solutions with Ionic Liquid R4NCy

Extraction of Cu(II), Fe(III), Zn(II), and Mn(II) from Aqueous Solutions with Ionic Liquid R4NCy

The use of seawater in copper hydrometallurgical processing in Chile: A review

Experimental Investigation and Thermodynamic Modeling of Zn+2 and Ni+2 Extraction from Zn Plant Residue using D2EHPA

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