Thermodynamic Properties of Molten Salt Solutions

Blander, M.

doi:10.1007/978-94-009-3863-2_2

Cited by 21 publications

(30 citation statements)

References 10 publications

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“…This rules out the possibility of the overall ions concentration change in the solution, called the Ionic Strength, which is directly influencing different salts solubility in the water‐based solutions. Limiting the miscibility is the positive enthalpy of mixing, which stays positive as long as the samples stay below their Upper Critical Solution Temperature, as is true in our experiment . The thermodynamics of mixing and the difference for these two copper oxides can theoretically be calculated, although the existing Temkin or Forland models treat the chemical species in the solution as pure components, disregarding their oxidation state.…”

Section: Resultsmentioning

confidence: 71%

“…In an attempt to understand the reason behind the greater solubility of the Cu 2 O over CuO, one can assume the Temkin model, in which molten salts are considered as completely ionized. This rules out the possibility of the overall ions concentration change in the solution, called the Ionic Strength, which is directly influencing different salts solubility in the water‐based solutions.…”

Section: Resultsmentioning

confidence: 99%

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The Solubility of Specific Metal Oxides in Molten Borate Glass

2015

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Section: Resultsmentioning

confidence: 71%

Section: Resultsmentioning

confidence: 99%

The Solubility of Specific Metal Oxides in Molten Borate Glass

2015

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“…This is due to the highly polymeric nature of molten borate, in contrast to purely ionic structure of the latter 34,35 . The molten salts liquid-liquid interface transfer mechanism was previously reported in the literature 28 .…”

Section: Additional Stream Of Rare and Valuable Metals Is Possible Inmentioning

confidence: 99%

Metal Recovery by Electrodeposition from a Molten Salt Two-Phase Cell System

Amietszajew

Sridhar

Bhagat

2016

J. Electrochem. Soc.

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A novel electrochemical recovery method of Co, Cu, Mn and Ni from a reactor based on two immiscible molten phases, to enable selective metal plating, sufficient feedstock dissolution and protection from re-oxidation, was designed and characterised through voltammetry and chronoamperometry. The immiscible phases in the electrolytic cell were NaCl and Na2O-2B2O3 at 1173 K, and the metal feedstock to be recovered was either metal chlorides or metal oxides of Co, Cu, Mn and Ni. Metals could be successfully recovered as plated metal deposits and the formal redox reaction potentials were reported. Metals thermodynamic behaviour differences between the cells were analysed. Analysis of the metal deposits showed that the recovered metals were of high purity (∼99%). This offers an alternative method to recycle valuable metals present in the growing e-waste stream.

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“…Consequently, the solid-solid and solid-liquid interface tensions in these systems are high (σ ≈ 250dyn/cm) [35] and the thermal conductivity of the liquid and the solid are small (k ≈ 1W/mK) [36]. In addition, as a pragmatic criterion, the relation between the entropy of melting (∆S m f ) [37] and the universal constant of gases (R) is approximately ∆S m f /R ≈ 1 [38], which explains the non-faceted and regular structures normally observed during the solidification process of molten salts. For illustration purposes, Figure 2 shows the solid structure obtained for an eutectic mixture of LiF-NaF (61% − 39% mol) in an experiment performed at LPSC-Grenoble.…”

Section: Description Of the Systemmentioning

confidence: 99%

Progress in modeling solidification in molten salt coolants

Tano

Rubiolo

Doche

2017

Modelling Simul. Mater. Sci. Eng.

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Molten salts have been proposed as heat carrier media in the nuclear and concentrating solar power plants. Due to their high melting temperature, solidification of the salts is expected to occur during routine and accidental scenarios. Furthermore, passive safety systems based on the solidification of these salts are being studied. The following article presents new developments in the modeling of eutectic molten salts by means of a multiphase, multicomponent, phase-field model. Besides, an application of this methodology for the eutectic solidification process of the ternary system LiF-KF-NaF is presented. The model predictions are compared with a newly developed semi-analytical solution for directional eutectic solidification at stable growth rate. A good qualitative agreement is obtained between the two approaches. The results obtained with the phase-field model are then used for calculating the homogenized properties of the solid phase distribution. These properties can then be included in a mixture macroscale model, more suitable for industrial applications.

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Thermodynamic Properties of Molten Salt Solutions

Cited by 21 publications

References 10 publications

The Solubility of Specific Metal Oxides in Molten Borate Glass

The Solubility of Specific Metal Oxides in Molten Borate Glass

Metal Recovery by Electrodeposition from a Molten Salt Two-Phase Cell System

Progress in modeling solidification in molten salt coolants

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