Solvent extraction of molybdenum (VI), tungsten (VI) and rhenium (VII) by diisododecylamine from leach liquors

Gerhardt, Natalia I.; Palant, A; Петрова, В. А.; Tagirov, R.K

doi:10.1016/s0304-386x(00)00123-7

Cited by 99 publications

(48 citation statements)

References 3 publications

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“…Chemical composition of the sample solution for solvent extraction tests with TOA was follows: 186 mg/dm 3 Re, 150 mg/dm 3 Mo, 11 mg/dm 3 Cu and 4.6 mg/dm 3 Ca.…”

Section: )mentioning

confidence: 99%

Behavior of Extraction, Stripping, and Separation Possibilities of Rhenium and Molybdenum from Molybdenite Roasting Dust Leaching Solution Using Amine Based Extractant Tri-Otyl-Amine (TOA)

et al. 2013

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The main objective of the present study is to separate the rhenium and molybdenum as well as recovery of the targeted metal ion. The behavior of extraction, stripping and separation possibilities of rhenium and molybdenum from molybdenite roasting dust leaching solutions using tri-otyl-amine (TOA) as an extractant has been investigated. From the results, 5 vol% TOA dissolved in kerosene is found to be selective for extraction of rhenium as compared with molybdenum. It extracted, molybdenum with extraction efficiency of less than 30%, whereas rhenium with extraction efficiency of more than ³99%. The optimum extraction conditions have been determined as: 5 vol% TOA, 900 s of contact time, 298 K temperature, 250 rpm agitation speed, phase ratio (organic/aqueous = O/A) of 0.4 at equilibrium pH 0.0. Stripping (back extraction of loaded metal) of rhenium from loaded organic phase with 5 kmol/m 3 HNO 3 was proved as efficient and the rhenium stripping efficiencies were obtained about 99% under conditions of O:A ratio of 1, for 900 s time, at 298 K temperature, at the same experimental condition whereas molybdenum stripped ³31%.

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“…Chemical composition of the sample solution for solvent extraction tests with TOA was follows: 186 mg/dm 3 Re, 150 mg/dm 3 Mo, 11 mg/dm 3 Cu and 4.6 mg/dm 3 Ca.…”

Section: )mentioning

confidence: 99%

Behavior of Extraction, Stripping, and Separation Possibilities of Rhenium and Molybdenum from Molybdenite Roasting Dust Leaching Solution Using Amine Based Extractant Tri-Otyl-Amine (TOA)

et al. 2013

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“…The selectivity for molybdenum extraction from solution (pH = 2.0) containing copper, magnesium, manganese, iron, cobalt and aluminum with DIDA was carried out by Gerhardt 37) . The co-extraction of iron, cobalt and impurities did not exceed 1-2% while the extraction percentage of copper, manganese and aluminum was negligible.…”

Section: )mentioning

confidence: 99%

Recovery of Molybdenum and Vanadium from Acidic Leaching Solution of Spent Catalysts by Solvent Extraction

Nguyen¹,

Lee

2013

Journal of the Korean Institute of Resources Recycling

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The recovery of molybdenum and vanadium from acid leaching solutions of spent catalysts using solvent extraction has been investigated. Among various acid leaching solutions, sulfuric acid solution is found to be adequate for the recovery of these two metals. The extraction and stripping behavior of the two metals in the absence and presence of other impurity metals by various types of extractants such as cationic, solvating, amine and a mixture of cationic and solvating extractants was discussed. Each type of extractants has advantage and disadvantage in terms of the possibility of separation and of forming a third phase. Among the various types of extractants, a mixture of cationic and solvating extractants seems to be the most promising extractant system for the separation of Mo and V from the acid leaching solutions of spent catalysts.

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“…When using strongly basic anion exchangers, there is no necessity to change pH of the solution, and, thus, the excess of sodium carbonate is not decomposed [8]. In the alkaline solution tungsten is stable in the form of tungstate ion WO 4 [2][3][4][5][6][7][8][9]. The productive solution containing sodium carbonate and sodium tungstate as macrocomponents as well as such impurities as silicate and sodium arsenate is supplied to the ion exchange.…”

Section: Introductionmentioning

confidence: 99%

Tungstate and Carbonate Ions Sorption Using Anion Exchangers AV-17-8 and Purolite A400

et al. 2016

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Solvent extraction of molybdenum (VI), tungsten (VI) and rhenium (VII) by diisododecylamine from leach liquors

Cited by 99 publications

References 3 publications

Behavior of Extraction, Stripping, and Separation Possibilities of Rhenium and Molybdenum from Molybdenite Roasting Dust Leaching Solution Using Amine Based Extractant Tri-Otyl-Amine (TOA)

Behavior of Extraction, Stripping, and Separation Possibilities of Rhenium and Molybdenum from Molybdenite Roasting Dust Leaching Solution Using Amine Based Extractant Tri-Otyl-Amine (TOA)

Recovery of Molybdenum and Vanadium from Acidic Leaching Solution of Spent Catalysts by Solvent Extraction

Tungstate and Carbonate Ions Sorption Using Anion Exchangers AV-17-8 and Purolite A400

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