Separation and recovery of cobalt(II) and nickel(II) from sulphate solutions using sodium salts of D2EHPA, PC 88A and Cyanex 272

Devi, Niharbala; Nathsarma, K.C.; Chakravortty, V.

doi:10.1016/s0304-386x(97)00073-x

Cited by 147 publications

(78 citation statements)

References 6 publications

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“…한편 황산용액의 경우에는 양이온추출제인 PC88A과 Cyanex 272가 일반적으로 사용되고 있다 [12][13][14] . 저자들은 구리 니켈, 코발트 혼합용액으로부터 Cyanex 272를 이용하여 용매추출 방법으로 코발트를 분리 하는 연구를 이미 보고하였다 [15][16][17] .…”

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Recovery of Cobalt from Synthetic Leaching Solution of Manganese Nodule Matte by Solvent Extraction-electrowinning

Kim¹,

Nam²,

Park³

et al. 2016

Journal of the Korean Institute of Resources Recycling

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주제어 : 망간단괴, 코발트 회수, 용매추출, 전해채취 AbstractA scale up tests (380 kg/day) using a continuous solvent extraction and electro-winning system was carried out to separate and recover cobalt from a solution containing 1.91 g/L Co and 14.65 g/L Ni. The solution was obtained during a process including solvent extraction and precipitation stages for removal of Cu and Fe from a synthetic sulfuric acid solution of manganese nodule matte. The optimal condition for solvent extraction was : solvent concentration of 0.22M Na-Cyanex 272 (45% saponified with NaOH) and O:A phase ratios of 1:1.5, 10:1 and 1.5:1 used in extraction, scrubbing and stripping stages, respectively. The extraction and stripping efficiencies were found to be 99.8% and 99.88%, respectively. The stripped solution contained 40.27 g/L Co with 4 ppm Ni. Cobalt metal of 99.963% purity was yielded with current efficiency of 67% and current density of 0.563 A/dm 2 during the electro-winning process.

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Recovery of Cobalt from Synthetic Leaching Solution of Manganese Nodule Matte by Solvent Extraction-electrowinning

Kim¹,

Nam²,

Park³

et al. 2016

Journal of the Korean Institute of Resources Recycling

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“…3 Separation of nickel from cobalt from sulphate solution is one of the most difficult processes in hydrometallurgy, because of the similarity in their chemical behavior. 2 In chloride solution, cobalt has a strong tendency to form anionic complexes, such as CoCl 3 -and CoCl 4 2-, at high HCl concentration. 4 However, most nickel is present as Ni 2+ and NiCl + .…”

Section: Introductionmentioning

confidence: 99%

“…1 The major sources for the production of nickel metal are certain raw materials, such as copper converter slag, nickel laterite ore and manganese nodules. 2 Leaching of these materials with sulfuric or chloride solution results in mixed solution containing nickel and cobalt along with some impurities. 3 Separation of nickel from cobalt from sulphate solution is one of the most difficult processes in hydrometallurgy, because of the similarity in their chemical behavior.…”

Section: Introductionmentioning

confidence: 99%

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Solvent Extraction of Ni(II) from Strong Hydrochloric Acid Solution by Alamine336

Lee¹,

Nam

July³

2011

Bulletin of the Korean Chemical Society

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Slope analysis method was applied to determine the stoichiometry of the solvent extraction reaction of Ni(II) by Alamine336 from strong HCl solution range from 1 to 10 M. Solvent extraction data was obtained from the literature. The effective equilibrium constant for the solvent extraction reaction was estimated by considering the ionic equilibria of NiCl2 in the HCl solution. The measured distribution coefficients of Ni(II) agreed well with those calculated in this study. Our results suggest that further study on the measurement of the activities of nickel complexes at high HCl solution need to be done.

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“…5,6) Numerous studies have been reported on the separation of Co(II) and Ni(II) by solvent extraction. [7][8][9][10] In acidic solution, most extractants have a selectivity for Co(II) over Ni(II), while some extractants have a higher selectivity for Ni(II) in ammoniacal solution. 11) Mixed extractants containing versatic 10, hydroxyoxime and TBP could extract most of cobalt and nickel from the laterite leach solution.…”

Section: Introductionmentioning

confidence: 99%

Solvent Extraction Separation of Co(II) from Synthetic Leaching Sulfate Solution of Nickel Laterite Ore with High Magnesium Content

et al. 2011

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Leaching of nickel garnierite ore with sulfuric acid resulted in a mixed sulfate solution of Co(II) and Ni(II) with high magnesium content. In order to find an optimum condition to separate cobalt, solvent extraction experiments have been performed from the synthetic leaching sulfate solution with the following composition:The effects of extraction variables on the separation of Co(II) from nickel and magnesium were investigated by using D2EHPA, PC88A, Cyanex272, and Alamine336. Saponifiaction degree of cationic extractants, extractant concentration, and volume ratio were changed. In our experimental range, extraction of nickel was negligible. Among the cationic extractants tested in this study, the highest separation factor between Co(II) and Mg(II) was obtained with saponified Cyanex272. Alamine336 in the presence of MgCl 2 extracted only Co(II), while the extraction percentage of Mg(II) was nearly zero.

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Separation and recovery of cobalt(II) and nickel(II) from sulphate solutions using sodium salts of D2EHPA, PC 88A and Cyanex 272

Cited by 147 publications

References 6 publications

Recovery of Cobalt from Synthetic Leaching Solution of Manganese Nodule Matte by Solvent Extraction-electrowinning

Recovery of Cobalt from Synthetic Leaching Solution of Manganese Nodule Matte by Solvent Extraction-electrowinning

Solvent Extraction of Ni(II) from Strong Hydrochloric Acid Solution by Alamine336

Solvent Extraction Separation of Co(II) from Synthetic Leaching Sulfate Solution of Nickel Laterite Ore with High Magnesium Content

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