ACORGA ZNX50—a new selective reagent for the solvent extraction of zinc from chloride leach solutions

Dalton, Raymond F.; Burgess, Arthur E.; QUAN, P. M.

doi:10.1016/0304-386x(92)90095-h

Cited by 23 publications

(9 citation statements)

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“…Simulation of the shares of zinc complexes has shown that in all extraction feeds nearly 78% of the zinc is present in the form of ZnCl 4 22 complex, nearly 11% in the form of ZnCl 3 2 complex and 6% and 5% are the shares of the neutral ZnCl 2 salt and the Zn 2þ cations. When 1.8% HCl in the feed was used the simulation of shares reported that, in the raffinates, nearly 81% or 84% of the zinc was in the form of ZnCl 4 22 , 11% or 9% in the form of ZnCl 3 2 , and the remaining share was neutral ZnCl 2 , for undiluted or 80% TBP, respectively. Zinc cations were totally absent from the raffinates.…”

Section: Loading Of Tbp With Zincmentioning

confidence: 99%

A Contributive Study on the Stripping of Zinc(II) from Loaded TBP Using an Ammonia/Ammonium Chloride Solution

Mishonov¹,

Alejski²,

Szymanowski³

2004

Solvent Extraction and Ion Exchange

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The stripping of zinc(II) from undiluted and 80 v/v% TBP in low aromatic kerosene by means of ammonia/ammonium chloride solution has been studied. It was found that the equilibrium in the system was reached within 2 -3 min of vigorous shaking of aqueous and organic phases. The stripping isotherms for zinc, when using undiluted or 80% TBP and 10% or 1.8% hydrochloric acid in the extraction feed, have been obtained. The pregnant strip solutions contained nearly 53 and 63 g/L zinc for both concentrations of the extractant and for 10% or 1.8% HCl levels in the extraction feed, respectively. The strip solution ORDER REPRINTS can be further processed for recovery of the metal by electrowinning from NH 3 /NH 4 Cl media. The experimental results were modeled. Values of conditioned equilibrium stripping constants in an NH 3 /NH 4 Cl solution for the HZnCl 3 and ZnCl 2 species as high as K S1 ¼ 2.0 Â 10 7 M 25 and K S2 ¼ 2.0-2.3 Â 10 3 M 23 , respectively, have been evaluated. The simulation revealed the shares of various zinc ammine and chloride complexes: in the final strip, the metal is present mainly as Zn(NH 3 ) 4 2þ and Zn(NH 3 ) 3 2þ complexes, the share of all chloride complexes being not higher than 7% of all zinc species. Results for ammonia and water co-extraction by TBP are also presented and some aspects of the observed phenomenon are discussed.

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Section: Loading Of Tbp With Zincmentioning

confidence: 99%

A Contributive Study on the Stripping of Zinc(II) from Loaded TBP Using an Ammonia/Ammonium Chloride Solution

Mishonov¹,

Alejski²,

Szymanowski³

2004

Solvent Extraction and Ion Exchange

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“…The presence of extra ions like permanganate in ppm measurement is very harmful in the liquid solution because this ion can oxidize the solution extracter (lix) and it reduces its recovery rate [18][19][20]. Moreover,Dalton Raymond has searched in this regard and has got the same conclusions as other researchers [8]. The increase of the solution of extractor concentration accelerates the recovery rate of the liquid solution [18][19][20][21].…”

Section: Introductionmentioning

confidence: 98%

“…Extracting by a chemical solvent is a chemical process in which copper metal is stirred with an inorganic substance in solution phase. In fact, a complex with anorganic complicated composite is formed [8][9][10][11][12][13]. In this case, the copper metal leaves the liquid phase and is transmitted into inorganic phase [7][8].…”

Section: Introductionmentioning

confidence: 99%

“…In fact, a complex with anorganic complicated composite is formed [8][9][10][11][12][13]. In this case, the copper metal leaves the liquid phase and is transmitted into inorganic phase [7][8]. It is very important to detect the rate of separation of all types of solution extractors (lix) because they show different reactions to various elements [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

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Investigating the effect of concentration and stirring time on copper extraction process from pregnant liquid solution (PLS), case study: Sungun copper mine

Soeezi¹,

Rahimi

Mohaghegh

2015

IJRCMCE

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Solvent extraction is regarded as one of the most applicable methods of extracting copper from pregnant liquid solution. The amount and quality of copper extraction are depend on various parameters including: the type of extractant, concentration and the stirring time. The current essay considers the amount of copper extraction from the pregnant liquid solution of Sungun copper mine in an approxiate concentration of 3% by chemorex cp150 as an extractant in 10% and 20% concentrations. In addition, the concentration of sulfuric acid in Sungun PLS is determined 4 gr/lit. eventually, the stripping process is done by sulfuric acid in 180 gr/lit concentration. the results indicate as the extractant concentration is increased, the amount of copper recovery from Sungun PLS gets more, while the long time of strring decreased the recovery.

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“…The removal of zinc(II) ions from chloride solutions is very important in the industry. Different reagents, such as TBP, Kelex 100 [1], ACORGA ZNX50 [2,3], Cyanex 302 [4], Aliquat 336 and secondary amines [5][6][7], have been investigated. However, there is still a need to search for new extractants which will effectively remove zinc(II) ions, especially from multicomponent solutions.…”

Section: Introductionmentioning

confidence: 99%

Solvent extraction of zinc(II) ions from chloride media by4-pyridylketoximes

Parus

2016

Chem. Environ. Biotechnol.

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Three homologues of 4-pyridylketoximes were synthesized and used as potential ligands for zinc(II). Their solvent extraction behaviors for zinc(II) in chloride solutions were investigated using CHCl3 as the diluent. The effect of different variables on the extraction of zinc(II) ions, such as the pH of aqueous phase, metal and chloride ions as well as the type of oxime, has been investigated. Results indicated that 4-pyridylketoximes could extract zinc(II) ions from chloride solutions and the extraction depended on the concentrations of the ligand, chloride ions and hydrochloride acid. Slope analysis confirmed that the 4-pyridylketoximes ligands form a 1:2 complex with zinc(II) in both chloride/nitrate and chloride/perchlorate solutions. After extraction, zinc(II) could be easily stripped from organic phase with water.

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ACORGA ZNX50—a new selective reagent for the solvent extraction of zinc from chloride leach solutions

Cited by 23 publications

References 1 publication

A Contributive Study on the Stripping of Zinc(II) from Loaded TBP Using an Ammonia/Ammonium Chloride Solution

A Contributive Study on the Stripping of Zinc(II) from Loaded TBP Using an Ammonia/Ammonium Chloride Solution

Investigating the effect of concentration and stirring time on copper extraction process from pregnant liquid solution (PLS), case study: Sungun copper mine

Solvent extraction of zinc(II) ions from chloride media by4-pyridylketoximes

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