Recovery of copper from alkaline glycine leach solution using solvent
— Extraction experiments were carried out using an aqueous solution containing 2 g/L Cu at Gly:Cu molar ratio of 3:1 and pH 11.The different phases were allowed to attain the set temperature (15–55 °C) and then contacted at an A:O 1:1 for 15 min at the set temperatures.Results in Table 2 show that within the studied temperature …
Leaching and solvent extraction purification of zinc from …
— The Skorpion zinc processing method demonstrated the viability of the production of zinc from zinc oxide ores, using hydrometallurgical route including the …
A New Application of Solvent Extraction to Separate Copper …
— Over the last decade, AMD waters have gained more attention as a potential source of metals due to the emerging need to recover or recycle metals from secondary resources. Metals recovery supports sustainability and the development of a circular economy with benefits for resource conservation and the environment. In this study, five …
Solvent extraction of copper and zinc from bioleaching …
Abstract: The solvent extraction of copper and zinc from the bioleaehing solutions of low-grade sulfide ores with LIX984 and D2EHPA was investigated. The influences of …
Copper recovery using leach/solvent …
— The concept of selectively extracting copper from a low-grade dump leach solution followed by stripping the copper into an acid solution from which electrowon copper cathodes could be produced ...
Zinc Recovery from an Extreme Copper-Free Acid Mine …
Zn recovery attempts from a copper-free extreme Acid Mine Drainage with ~ 53 g/L Fe and ~ 2 g/L Zn revealed Fe co-extraction in solvent extraction with 0.9 M D2EHPA or a mixture of 0.72 M D2EHPA and 0.18 M Cyanex 272, and simultaneous precipitation of Fe during zinc sulfide recovery through biogenic sulfide addition. Therefore, alkalinization, solvent …
Direct solvent extraction of indium from a zinc residue …
— Spent zinc electrolyte was used as the leachate and zinc concentrate was used as the reductant. The feed solution was generated by reductive leaching of the zinc residue in 190 g/L H 2 SO 4 at 90 °C, using a liquid–solid ratio of 7 mL/g, a mass ratio of zinc residue to zinc concentrate of 1:0.35, and a reaction time of 3 h. The chemical ...
Solvent extraction of copper, zinc, cadmium and nickel …
— The ratio of organic to aqueous (O/A) in solvent extraction process plays important role for the extraction of metals from solutions. Therefore, the studies were made by varying O/A ratio for the extraction of copper from the aqueous feed solution containing 0.92 g/L Cu using 5% LIX 84 diluted in kerosene.The results showed the extraction of …
Cobalt and zinc recovery from copper sulphate solution by solvent …
— The sample was obtained by the oxidative leaching of copper smelter slag with sulphuric acid. Batch and continuous solvent extraction tests were carried out in glass vessel and in a mixer-settler unit from MEAB Company, Sweden (MSU-0.5) respectively. ... From a common pregnant sulphate solution, copper, cobalt and zinc have been …
Zinc Recovery from an Extreme Copper‐Free Acid Mine …
Zn recovery attempts from a copper-free extreme Acid Mine Drainage with ~ 53 g/L Fe and ~ 2 g/L Zn revealed Fe co-extrac-tion in solvent extraction with 0.9 M D2EHPA or a mixture of 0.72 M D2EHPA and 0.18 M Cyanex 272, and simultaneous precipitation of Fe during zinc sulfide recovery through biogenic sulfide addition.
Base metals recovery from copper smelter slag by oxidising …
— Leaching tests were carried out at pH 2.5 on ground slag samples (<100 μm). Fig. 1, Fig. 2, Fig. 3, Fig. 4 show the reacted fraction of copper, cobalt zinc and iron during leaching in the temperature range between 24 and 80 °C.. Download : Download full-size image Fig. 1. Temperature effect on copper leaching recovery (10% solid, particle size: …
Separation of copper, iron (III), zinc and nickel from nitrate solution …
— Iron (III) is the main impurity in the leaching solution, and it can be extracted with copper within the equilibrium pH range of 1.72–1.96. The separation factor of Cu/Fe (β = D Cu /D Fe) is an important factor to evaluate the extractant [12].The β Cu/Fe of LK-C2 was below 45.00 within the equilibrium pH range of 0.20–0.97. It increased with the …
Direct solvent extraction of indium from a zinc residue …
DOI: 10.1016/J.HYDROMET.2015.05.003 Corpus ID: 92682904; Direct solvent extraction of indium from a zinc residue reductive leach solution by D2EHPA @article{Xingbin2015DirectSE, title={Direct solvent extraction of indium from a zinc residue reductive leach solution by D2EHPA}, author={Li Xingbin and Deng Zhigan and Cun …
Solvent extraction of copper, nickel and zinc by …
— Mahdi et al. [25] in their work on separation of nickel and zinc ions in a synthetic acidic solution by solvent extraction using D2EHPA and Cyanex 272 stated that extraction of zinc was found to ...
SOLVENT EXTRACTION AND SEPARATION OF COPPER …
to separate and recover copper and zinc. Solvent extraction of copper and zinc using Versatic 10 acid Effect of pH During extraction of metals using acidic extractants, H+ ions are released causing the decrease in pH which subsequently lowers extraction of metals in several instances. So the extraction process is greatly affected by pH.
Separation of nickel and zinc ions in a synthetic acidic solution …
Solvent extraction was used to recover nickel and zinc from synthetic acidic solution. Many leaching solution and waste waters contain both zinc and nickel at the same time. Bis (2,4,4- trimethylpentyl) phosphinic acid (Cyanex 272) and Di(2-ethylhexyl) phosphoric acid (D2EHPA) were used to separate nickel and zinc. In the D2EHPA system, at equilibrium …
Extraction and separation of indium and copper from zinc …
— The roaster dust is dissolved by neutral and then by acidic leaching and, finally, the indium is extracted from the acidic leach solution by solvent extraction [10], [11], [12]. With this process, indium recovery is usually in the range of 50–60%, whereas copper recovery is very low (<10%). ... Selective extraction of copper from acidic zinc ...
Influence of additives on the electrodeposition of zinc from …
— In the absence of additive (Fig. 2), the onset of Zn 2+ reduction (vs.Ag/AgCl) in Ethaline is at E = −1.18 V and the oxidation of Zn occurs via a two-stage process, with two oxidation peaks at E = −0.95 V and at −0.85 V. From careful examination of the voltammograms (Fig. s. 1 and 2) it is evident that the reduction process also occurs in …
Leaching and solvent extraction purification of zinc from …
— The present investigation is focused on zinc leaching from a zinc ore followed by iron precipitation and Zn solvent extraction and stripping. The optimum …
Solvent extraction separation and recovery of copper, nickel and zinc
— Separation of iron(III), copper(II) and zinc(II) from a mixed sulphate/chloride leach liquor bearing 11.8 kg/m3 iron, 24.8 kg/m3 copper, 0.23 kg/m3 zinc, 3.8 kg/m3 cobalt, 35.2 kg/m3 nickel, 176.3 ...
Solvent extraction of copper, zinc, cadmium and nickel from …
— The studies showed the selective extraction of copper after iron precipitation from the sulfuric acid leach solution of e-wastes containing 0.92 g/L Cu and minor impurities with 2-hydroxy-5 ...
SOLVENT EXTRACTION OF ZINC FROM ACIDIC LEACH …
ABSTRACT. An initial test work was carried out to demonstrate that solution produced by autoclave acid leaching of Electric Arc Furnace Dust (EAFD) from the steel production …
Recovery of Copper, Nickel and Zinc from Sulfate …
of copper, nickel and zinc from synthetic solution using LIX 984 N as the extractant dissolved in kerosene, with an aim to separate these metals efficiently by single stage extraction.
Solvent extraction: the coordination chemistry behind …
— The high affinity for zinc by the phosphoric acid D2EHPA is the basis for its application in a recently ... Mixing a solution of a neutral extractant with an acidic aqueous solution can lead to protonation of the ... A. Soto, M. Soderstrom and E. Kamenetzky, 19th International Solvent Extraction Conference, Santiago, Chile, 2011. H ...
Solvent Extraction and Separation of Copper and Zinc …
— Solvent extraction studies of copper and zinc have been carried out using Versatic 10 acid and Cyanex 272 separately from a model brass pickle liquor. Various parameters for the extraction and separation of copper and zinc such as effect of pH, extractant concentration, phase ratio etc. have been optimized. It was observed that …
Solvent Extraction of Copper and Zinc from Sulfate Leach Solution …
— Abstract This research investigates the extraction behavior of copper and zinc from the sulfate leachate of a porcelain stone tailings sample with Chemorex CP-150 and D2EHPA in detail. The findings demonstrated that Chemorex had greater ability and selectivity in the extraction of copper, while D2EHPA was better in the extraction of zinc. …
Solvent extraction of copper, zinc, cadmium and nickel …
— The organic reagent LIX 84 procured from the M/s Cognis Corporation, Ireland (Earlier M/s Henkel Inc., Tucson), mixed with appropriate quantities of kerosene oil as diluent has been used for the solvent extraction (SX) and separation of copper from the mixed solution containing copper, zinc, cadmium and nickel. LIX 84 is water insoluble
Isolation of Zinc, Copper and Nickel from Glutamate Media by Solvent
— It has been used as the extractant to recover copper from zinc leach liquor [6,8], to extract copper from sulfate media [8,20,22], to separate copper from nitrate/nitric acid media [23], to ...
Solvent extraction: the coordination chemistry behind …
This tutorial review describes the coordination chemistry of commercial solvent extraction processes that are used to achieve the separation and concentration of the metals of value in extractive hydrometallurgy. Hydrometallurgy, which is underpinned by coordination chemistry, is often favoured …
Cobalt and zinc recovery from copper sulphate solution by …
— From a common pregnant sulphate solution, copper, cobalt and zinc have been effectively recovered in the individual metal solutions by means of solvent …
Solvent extraction of copper and zinc from bioleaching solutions with
— Many researchers have studied the use of D2EHPA for extraction of zinc from various aqueous solutions such as the ammonium oxalate, oxalic acid [28], sulfate [25,27, 29], and phosphoric acid ...
Separation of nickel and zinc ions in a synthetic acidic solution …
— In an earlier study on the separation of nickel and zinc ions from synthetic solutions by SX using D2EHPA and CYANEX 272, the pH range for Ni extraction was found 4.5 and 7.5, respectively.
Solvent Extraction and Separation of Copper and Zinc …
In order to apply the solvent extraction and separation process so developed to the real spent brass pickle liquor, a model synthetic solution containing 45 g/L H 2SO 4, 30 g/L Zn, 35 g/L Cu, 1 g ...
SKORPION ZINC: OPTIMISATION AND INNOVATION
The Skorpion process comprises three processing steps, atmospheric leaching in sulphuric acid, zinc solvent extraction and electrowinning to produce special high grade zinc. The …
Review on solvent extraction of cadmium from various solutions
— The extracted cadmium from the organic phase stripped effectively with 1.10 M H 2 SO 4 in two stages to produce a pure salt or metal from the purified solution. Simultaneous extraction of zinc and cadmium by a mixed solvent of D2EHPA and mono-(2-ethylhexyl) phosphoric acid (MEHPA), and the synergistic effect of MEHPA on the co …
Cobalt and zinc recovery from copper sulphate solution by solvent …
— According to Rodriguez de San Miguel et al. (1997), the selectivity of LIX 984 for copper extraction lies in the pH range 0.5–2.5.Copper extraction from the pregnant liquor was carried out in three stages with 12% v/v LIX 984 diluted with kerosene at the conditions of 25 °C, pH 2.5 and varying aqueous/organic (A/O) phase ratios.