Suspension Temperature as a Rheological Control Parameter in Magnetic Separation

Sandulyak, A. V.; Samdulyak, D. A.; Ershova, V. A.; Polismakova, M. N.; Sandulyak, A. A.; Pamme, Nicole

doi:10.1007/s10717-020-00297-2

Cited by 2 publications

(10 citation statements)

References 11 publications

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“…Magnetophoresis, carried out by targeted magnetic action on liquid-dispersed media containing a magnetically active dispersed phase (natural or artificial) of particles, is used to solve many technical, environmental, and biotechnological problems [1][2][3][4][5][6][7][8][9][10][11][12] -to isolate or target tracing of such particles.…”

Section: The Relevance Of Assessing the Role Of Viscosity And Density...mentioning

confidence: 99%

“…The role of the viscosity of the medium in principle (so far without detailing its dependence on temperature) in the implementation of magnetophoresis is analyzed in [1] using the example of magnetic separation of magnetoactive particles from a liquid-dispersed medium by means of filtration magnetic separation (FMS). This version of magnetophoresis, which consists in passing a medium flow through a magnetized filter matrix (in particular, a filling of ferromagnetic granules-balls) [9,10], is designed to remove magnetophoresis particles from it, usually iron-containing: mainly the consequences of corrosion and wear equipment.…”

Section: The Relevance Of Assessing the Role Of Viscosity And Density...mentioning

confidence: 99%

“…The role of the dynamic viscosity η of the medium can be judged directly from the expanded expression for the efficiency ψ of magnetic separation of such impurity particles in the implementation of FMS; so, up to the coefficient a, this expression is written in the form [1,9,18]:…”

Section: The Relevance Of Assessing the Role Of Viscosity And Density...mentioning

confidence: 99%

“…In addition, as it is reflected in (1), the expression for ψ is valid with the obligatory limitation of the speed υf by the maximum permissible value υf = [υf] -based on the criterion (for this variant of magnetophoresis) value of the Reynolds number Re [1,13], where v = η / ρ is the kinematic viscosity of the medium, and ρ is its density.…”

Section: The Relevance Of Assessing the Role Of Viscosity And Density...mentioning

confidence: 99%

“…From the expression given in (1) for the efficiency ψ of the separation of impurity particles, it can be seen that in terms of the degree of influence on ψ of the dynamic viscosity η, the role of this rheological parameter is comparable to the role of such considered key parameters as the filtration rate υf, magnetic susceptibility χ of particles, average magnetic induction B in the filter matrix, its length L. And as for the limiting filtration rate [υf] in the implementation of FMS, then from the expression for it in (1) it follows that the influence on [υf] and, therefore, on the potential performance magnetic filterseparator, the role of the parameter η is comparable to the role of the size (diameter d) of the filter matrix granules and the density ρ of the medium.…”

Section: The Relevance Of Assessing the Role Of Viscosity And Density...mentioning

confidence: 99%

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On the Influence of Viscosity and Density of a Liquid Medium on Efficiency of Magnetophoresis. Role of Temperature

Sandulyak

Ershova

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Significant, but usually insufficiently disclosed and analyzed, parameters of magnetophoresis of magnetoactive particles of liquid-dispersed media are the dynamic viscosity and density of the medium, as well as its temperature, which usually significantly affects the viscosity. The role of viscosity and density is analyzed using the example of such a variant of magnetophoresis as filtration magnetic separation (FMS). This role is reflected in the basic expressions for filtration efficiency and rate limiting. To legalize the role of temperature in these expressions, an approach was used to obtain phenomenological temperature dependences of the viscosity of a number of liquid media by identifying these dependences (or their characteristic sections), amenable to quasi-linearization in semi-logarithmic coordinates. Thus, the possibility of their description by functions of the logarithmic and exponential form is shown, and therefore - an alternative representation of expressions for the efficiency and limiting speed of FMS.

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Section: The Relevance Of Assessing the Role Of Viscosity And Density...mentioning

confidence: 99%

Section: The Relevance Of Assessing the Role Of Viscosity And Density...mentioning

confidence: 99%

Section: The Relevance Of Assessing the Role Of Viscosity And Density...mentioning

confidence: 99%

Section: The Relevance Of Assessing the Role Of Viscosity And Density...mentioning

confidence: 99%

Section: The Relevance Of Assessing the Role Of Viscosity And Density...mentioning

confidence: 99%

See 3 more Smart Citations

On the Influence of Viscosity and Density of a Liquid Medium on Efficiency of Magnetophoresis. Role of Temperature

Sandulyak

Ershova

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Simulation of the Electro-Superconducting System Based on the H Equation

Zhang

2022

Journal of Chemistry

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In order to reduce the levitation energy consumption and increase the levitation air gap, a simulation study of the electrochemistry superconducting magnetic levitation system based on the H equation is proposed. Through finite element simulation, the magnetic field distribution, current distribution, force, and other characteristics of the magnetic suspension system in the superconducting gravimeter are obtained; the relationship between the force of the superconducting ball in the magnetic field and the height of the suspension body and the current of the suspension coil is analyzed; and the penetration rate, the magnetic gradient, penetration depth, and maximum magnetic induction intensity of the superconducting spherical surface of the single-coil electrochemistry superconducting magnetic levitation system are obtained by simulation calculation. Simulation results show that, at 1 s, we start to use 0.2 s, 0.4 s, 0.6 s, and 0.8 s time, respectively, to pass current into the floating coil until it reaches 4.4 A. The magnetic gradient of the electrochemistry superconducting magnetic levitation system using a single coil is too large to meet the requirements of gravity measurement, the penetration depth is much smaller than the thickness of the superconducting sphere, and the maximum magnetic field on the surface of the superconducting sphere is much smaller than the critical magnetic field value of the superconducting material, and no loss will occur. The critical magnetic field value of the superconducting sphere is much smaller than that of the superconducting sphere. The critical magnetic field value of the material will not quench, which verifies that the H equation can simulate the superconducting magnetic levitation system well and has a high simulation accuracy and efficiency.

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Suspension Temperature as a Rheological Control Parameter in Magnetic Separation

Cited by 2 publications

References 11 publications

On the Influence of Viscosity and Density of a Liquid Medium on Efficiency of Magnetophoresis. Role of Temperature

On the Influence of Viscosity and Density of a Liquid Medium on Efficiency of Magnetophoresis. Role of Temperature

Simulation of the Electro-Superconducting System Based on the H Equation

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