Nickel solvent extraction from cold purification filter cakes of Angouran mine concentrate using LIX984N

Balesini, A. A.; Zakeri, Alireza; Razavizadeh, H.; Khani, Ali

doi:10.1007/s12613-013-0830-4

Cited by 13 publications

(7 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The organic phase is pale olive-green (Fe(II)) whereas the raffinate was green (Ni(II)). These results agree with data of Balesini et al (2011). Stripping of both ions from the loaded organic phase in a single stage was feasible using 1 mol L -1 H 2 SO 4 (Figure 8a).…”

Section: Solvent Extraction Of Zn(ii) Fe(ii) Mn(ii) and Co(ii)supporting

confidence: 90%

RECOVERY OF METALS FROM ELECTROACTIVE COMPONENTS OF SPENT Ni-MH BATTERIES AFTER LEACHING WITH FORMIC ACID

2021

View full text Add to dashboard Cite

this work describes a route for recovering nickel, cobalt, iron, zinc and lanthanides from spent nickel-metal hydride batteries. Formic acid was used as leachant. Experiments were run at 25-50°C for 1-4 h. Under the best conditions leaching yields surpassed 99 wt.%, except for iron. The insoluble matter contains almost solely iron as iron(III) basic formate. The leachate went through six separation procedures, combining solvent extraction with D2EHPA as extractant, and precipitation reactions. Fe2+ and Zn2+ were extracted together (> 99 wt.%) from the original leachate (pH ~1.5). Yttrium and lanthanides were precipitated as oxalates directly from the raffinate (> 99.9 wt.%) upon addition of sodium oxalate. In the next steps, Mn2+ and Co2+ were extracted with D2EHPA at buffered pH (3 and ~4.8, respectively), after adding NaOHaq. About 10 wt.% of leached Ni2+ was coextracted with Co2+. The remaining Ni2+ was precipitated from the raffinate after addition of aqueous sodium oxalate at pH 6. After precipitation of Al3+ upon addition of NaOHaq. until pH ~8, sodium formate was recovered after slow evaporation of the final aqueous solution at 60oC. It contains ~90 wt.% of the formate present in the leachant.

show abstract

Section: Solvent Extraction Of Zn(ii) Fe(ii) Mn(ii) and Co(ii)supporting

confidence: 90%

RECOVERY OF METALS FROM ELECTROACTIVE COMPONENTS OF SPENT Ni-MH BATTERIES AFTER LEACHING WITH FORMIC ACID

2021

View full text Add to dashboard Cite

show abstract

“…5 Hydrometallurgical processes are usually based on the dissolution of metal phases (essentially Zn and Mn oxides) in aqueous alkali or acidic media. 3,22 Sulfuric acid is by far the most used leachant, followed by hydrochloric acid 10,17,[23][24][25][26][27][28][29][30] Since Mn(IV) is insoluble in acidic and alkaline media, reduction of tetravalent manganese is an important issue in acid leaching step. A reductant (such as hydrogen peroxide, sulfur dioxide, oxalic acid, carbohydrates etc.)…”

Section: Introductionmentioning

confidence: 99%

“…31,32 However, concentrated solutions, high temperatures and long reaction times are usually required, which are great disadvantages of these processes. 3,10,12,22 Leached Zn(II) can be separated from Mn(II) has been performed using chemical precipitation, 33,34 solvent extraction 10,[23][24][25][26][27][28][29]35 or electrowinning. 21,34 Chemical precipitation is a simple and cheap method, 5,33,36,37 although toxic reactants such as sulfide and oxalate ions are frequently used.…”

Section: Introductionmentioning

confidence: 99%

SEPARATION OF ZINC FROM MANGANESE BY SOLVENT EXTRACTION FROM ACIDIC LEACHATES OF SPENT ZINC-MnO2 DRY CELLS USING NEUTRAL ORGANOPHOSPHORUS EXTRACTANTS

Ibiapina¹,

Afonso²,

Silva³

et al. 2018

Quim. Nova

View full text Add to dashboard Cite

This paper describes a route for recovering manganese and zinc from spent zinc-MnO 2 dry cells via acid leaching using sulfuric or hydrochloric acids as leachants. Hydrogen peroxide was added as reductant. Experiments were run at 25-40 o C for 1-3 h. Under the best optimal conditions, over 97.5 wt.% of zinc and manganese were leached by both acids. Zn(II) was best extracted at high free acidity (≥ 1 mol L -1 ) with tributylphosphate (TBP) or trialkylphosphine oxides (Cyanex 923) diluted in n-heptane. Cyanex 923 was a better extractant than TBP, and the extraction was better performed in hydrochloric leachates. Mn(II) was more co-extracted from hydrochloric leachates and when Cyanex 923 was the extractant, but was easily scrubbed with dilute leachant (~1-2 mol L -1 ). Zn(II) striping was possible using 5 mol L -1 HCl or H 2 SO 4 . Manganese was precipitated as oxalate (MnC 2 O 4 .2H 2 O), free of leached contaminants. High-purity sodium salts of the anions of the leachants were recovered after slow evaporation of the final solution.

show abstract

“…The high value of the distribution coefficient shows that the concentration of Zn 2+ ion in the organic phase is higher than that in aqueous solution (Kislik, 2011). ion, thus the extraction percentage would be higher (Balesini, Razavizadeh and Zakeri, 2011). The increased in organic solution volume causes the equilibrium to move to the right direction of the product formation.…”

Section: +mentioning

confidence: 99%

“…2+ extraction from a pregnant solution was carried out through solvent extraction using a ligand or extractant in an organic solvent. The already used ligands are bis (2-Ethylhexyl) phosphate acid (D2EHPA) and bis (2.4.4-trimethylpentyl) phosphinic acid (CYANEX 272) (Balesini et al, 2011). Usage of D2EHPA ligand results in 39% extraction in a one-step process, while using CYANEX 272 provides 41% extraction also from a one-step process (Nathsarma and Sarma, 2003;Asadi, Azizi, Lee and Jahani, 2018).…”

Section: Znmentioning

confidence: 99%

Purification of pregnant solution resulted from sphalerite concentrate extraction using sulfate acid for zinc oxyde production

Yuhelda

Amalia

Novianti

et al. 2019

IMJ

View full text Add to dashboard Cite

Purification of pregnant solution from sphalerite concentrate extraction using sulfate acid to produce zinc oxide was meant to prepare zinc oxide production technology utilizing existing internal sphalerite mineral raw material. The pregnant solution used to produce zinc oxide contains 29.84% zinc (Zn), with the biggest impurities iron (Fe) 11.68%. In order to obtain high purity zinc oxide, the pregnant solution should be recovered. It was done through a solvent extraction method, in two process steps: extraction and stripping. The extraction was applying ligan bis di2ethylhexyle phosphate acid (D2EHPA) in toluene solvent, through ligan concentrate variation, pH and comparison of aqueous volume with organic volume (VA:Vo) and its excess. Stripping was carried out using sulfate acid through variation of concentration, pH and Vo:VA. To obtain optimum recovery, thus extraction and stripping should be carried out in many steps. The extractions and the strippings were calculated using McCabe Thiele diagram. Furthermore, zinc oxide was resulted from deposition and calcination of pure pregnant solution at temperature 500°C. Purification results show that the best extraction occurred at concentration D2EHPA 1 M, pH 3 and Vo:Va 2:1, through 4 step processes obtained recovery 97.50% with distribution coefficient 77.9; while the best stripping was obtained at H2SO4 concentration 2 M, VO:VA 2:1 through 3 step processes which obtained stripping percent 98.22% with stripping coefficient 1.51. On the other hand, zinc oxide solution resulted from purification was obtained Zn 93.31% in the form of hexagonal crystals (wurtzite).

show abstract

Nickel solvent extraction from cold purification filter cakes of Angouran mine concentrate using LIX984N

Cited by 13 publications

References 13 publications

RECOVERY OF METALS FROM ELECTROACTIVE COMPONENTS OF SPENT Ni-MH BATTERIES AFTER LEACHING WITH FORMIC ACID

RECOVERY OF METALS FROM ELECTROACTIVE COMPONENTS OF SPENT Ni-MH BATTERIES AFTER LEACHING WITH FORMIC ACID

SEPARATION OF ZINC FROM MANGANESE BY SOLVENT EXTRACTION FROM ACIDIC LEACHATES OF SPENT ZINC-MnO2 DRY CELLS USING NEUTRAL ORGANOPHOSPHORUS EXTRACTANTS

Purification of pregnant solution resulted from sphalerite concentrate extraction using sulfate acid for zinc oxyde production

Contact Info

Product

Resources

About