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Influence of a transverse magnetic field on solidification structure during directional solidification

Influence of a transverse magnetic field on solidification structure during directional solidification X Li 1, Y Fautrelle 2, 3, J Wang 1, A Gagnoud 2, 3, ZM Ren 1, Nguyen Thi4 1 partment of Material Science and Engineering, Shanghai University, Shanghai, 200072

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NUMERICAL MODELLING OF SILICON MELT PURIFICATION IN INDUCTION DIRECTIONAL SOLIDIFICATION …

Separation criterion (left) and turbulent mixing (right), fully molten Si Two important aspects of th e purification process occur simultaneously during the directional solidification of the silicon ingot: stirring of the melt, so that particulate impurities are taken

Magnetic Separation of Metal Ions | The Journal of …

The magnetic separation was investigated for Co2+ (9500 × 10-6 cm3 mol-1) and Fe3+ (14600 × 10-6 cm3 mol-1) ions and for Cr3+ (6200 × 10-6 cm3 mol-1) and Al3+ (−2 × 10-6 cm3 mol-1) ions. The metal ion solutions were spotted on a silica gel support, and exposed to a magnetic field of 410 kOe2 cm-1 intensity × gradient. The Co2+ ions move farther toward the maximum field than the Fe3 ...

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Alloy Development through Rapid Solidification for Soft Magnetic …

different types of soft magnetic alloys are mentioned. Keywords: Rapid solidification, soft magnetism, alloy design, saturation induction, Fe-6.5 wt% Si steel, GMI alloys 1. Introduction In recent years, amorphous and nanostructured soft magnetic alloys have

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(PDF) Channel segregation during solidification and the …

Consequently, the associated pressure dif- ferences at the separation points along the solidification front An lm value of around H/2 yields C 2.15 wt pct. This are modified. In case 1 (single vortex and gravity flow), one value is compatible with the order of magnitude of the seg- wall channel is overactivated and enlarged while the other is regations observed in the calculations.

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Separation and purification of Si from solidification of …

A low-cost and high-efficiency method to purify Si directly from cheap MG–Si at low temperature was proposed and demonstrated in this paper, which used power frequency rotating magnetic field (RMF) to separate the primary Si from a hypereutectic Al–Si alloy and was followed by the acid peeling. The separation mechanism was based on the flow characteristic of melt under RMF and the cooling ...

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Liquid Phase Separation in Undercooled Cu-Co Alloys …

The rapid solidification can help freeze in the morphology of a higher-melting liquid and eases difficulties in studies of liquid phase separation kinetics. In the present work, the influence of static magnetic fields on liquid phase separation in bulk Cu 84 Co 16

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Effect of traveling magnetic field on separation and …

Separation and purification of the Si crystal during solidification process of hypereutectic Al-30Si melt under traveling magnetic field (TMF) were investigated in the present study. The results showed that under a proper condition the Si-rich layer can be formed in the periphery of the ingot while the inner microstructure is mainly the Al-Si eutectic structure. The intense melt flow carries ...

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Magnetic Separation Method

Magnetic separator. MAGNETIC SEPARATORS – a wide range of MAGNETIX products, designed for metal separation in applications such as: mining, power industry, recycling and food industry. The magnetic separators are installed on belt conveyors, chutes and pneumatic conveying pipelines.

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Magnetic separation of Fe contaminated Al-Si cutting …

Magnetic separation of Fe contaminated Al-Si cutting chip scraps and evaluation of solidification characteristics Fe성분이 혼입된 Al-Si 절삭칩 스크랩의 자력선별 및 응고특성 평가 Kim, Bong-Hwan (Liquid processing & casting technology R/D division, Korea Institute of Industrial Technology) ;

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Solidification Processing of Materials in Magnetic Fields

During metal solidification, magnetic fields have been applied to shape the solidifying melts (i.e., electromagnetic molding), stir the melts at desired locations (i.e., electromagnetic stirring), and reduce the melt disturbance or flow irregularities or turbulence (i.e

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Convection During Thermally Unstable Solidification of Pb-Sn in a Magnetic …

Convection of Pb-Sn in during Thermally a Magnetic Field Unstable Solidification H. SONG, S.N. TEWARI, and H.C. de GROH III Convection and macrosegregation in directionally solidified hypoeutectic Pb-38 wt pct Sn and hy- pereutectic Pb-64 ...

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Non-monotonic changes in critical solidification rates for …

More intense convection yielded thinner SRL. The effect of the magnetic field on the solidification convection mainly involves two aspects: the MHD and TEMC.

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Magnetic Separation of Metal Ions | The Journal of …

The magnetic separation was investigated for Co2+ (9500 × 10-6 cm3 mol-1) and Fe3+ (14600 × 10-6 cm3 mol-1) ions and for Cr3+ (6200 × 10-6 cm3 mol-1) and Al3+ (−2 × 10-6 cm3 mol-1) ions. The metal ion solutions were spotted on a silica gel support, and exposed to a magnetic field of 410 kOe2 cm-1 intensity × gradient. The Co2+ ions move farther toward the maximum field than the Fe3 ...

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Alloy Development through Rapid Solidification for Soft Magnetic …

different types of soft magnetic alloys are mentioned. Keywords: Rapid solidification, soft magnetism, alloy design, saturation induction, Fe-6.5 wt% Si steel, GMI alloys 1. Introduction In recent years, amorphous and nanostructured soft magnetic alloys have

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Acta Metall Sin

Sun Z B, Song X P, Hu Z D, et al.Secondary liquid separation and solidification of Cu-Co alloys under deep supercooling[J]. Chin. J. Nonferrous Met., 2001, 11: 172 (,, . Cu-Co[J].

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DRY MAGNETIC SEPARATION OF NEPHELINE SYENITE ORES

Dry magnetic separation of nepheline syenite ores 177 After each grinding period the mill was discharged and the ground product was screened to remove the under size from the circuit. The mill was then compensated with an amount of a feed equivalent to the

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(PDF) A novel electromagnetic apparatus for in-situ …

configuration, it was determined that the optimal mid-plane separation distance between the magnetic coils and its mean radius was 1.1714 ( x/R MEAN = 1.1714). Geometrical aspects of the magnetic ...

Effects of solidification parameters and magnetic field on …

In the present study, the effects of the solidification parameters and magnetic field on the enrichment of primary Si via separation of a hypereutectic Ti-85 wt.% Si alloy during directional solidification were experimentally investigated. The results indicated that increasing the pull-down rate from 5 to 15 μm/s increased the temperature gradient and growth rate at the same position of the ...

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Magnetic separation: its application in mining, waste …

The use of strong magnetic field gradients and high magnetic fields generated by permanent magnets or superconducting coils has found applications in many fields such as mining, solid state chemistry, biochemistry and medical research. Lab scale or industrial implementations involve separation of macro- and nanoparticles, cells, proteins, and ...

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CA1046986A

magnetic wax liquid Prior art date 1975-12-29 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired CA267,594A (fr

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Particle tracking during melting and solidification in the presence of AC magnetic …

magnetic field of various configurations. 8th International Conference on Electromagnetic Processing of Materials, Oct 2015, Cannes, France. ￿hal-01334078￿ Particle tracking during melting and solidification

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Forschungsprojekte — Professur für Transportprozesse an …

Magnetic separation Dendritic solidification Foam flow Marangoni convection at droplets and bubbles Flotation Strömungsmechanik von Schäumen Breadcrumb-Men ü Professur für Transportprozesse an Grenzflächen Forschung Zeige Unternavigation ...

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Manufacture and performance test of 3.5T High Temperature Superconducting Coil for the Magnetic Separation

C. Coil solidification A mockup coil is put into use to carry out the performance test at 77K before and after solidification repeatedly for verifying coils treatment technology . Fig.5 is the picture of the coil performance test process before and after solidification. The 12

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Particle tracking during melting and solidification in the presence of AC magnetic …

magnetic field of various configurations. 8th International Conference on Electromagnetic Processing of Materials, Oct 2015, Cannes, France. ￿hal-01334078￿ Particle tracking during melting and solidification

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Influence of a transverse magnetic field on solidification structure during directional solidification

Influence of a transverse magnetic field on solidification structure during directional solidification X Li 1, Y Fautrelle 2, 3, J Wang 1, A Gagnoud 2, 3, ZM Ren 1, Nguyen Thi4 1 partment of Material Science and Engineering, Shanghai University, Shanghai, 200072

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NUMERICAL MODELLING OF SILICON MELT PURIFICATION IN INDUCTION DIRECTIONAL SOLIDIFICATION …

Separation criterion (left) and turbulent mixing (right), fully molten Si Two important aspects of th e purification process occur simultaneously during the directional solidification of the silicon ingot: stirring of the melt, so that particulate impurities are taken

New prices in 2021

Convection during Thermally Unstable Solidification of Pb-Sn in a Magnetic …

Solidification of this alloy downward would be thermally unstable and solutally stable. It is believed that convection in metals can be suppressed by application of a magnetic field, as has been demonstrated during plane front solidi-fication of several electronic

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Particle Separation in Silicon Ingot Casting Using AC …

Particle separation Silicon solidification AC magnetic field Lagrangian tracking This is a preview of subscription content, log in ... Particle Separation in Silicon Ingot Casting Using AC Magnetic Field. In: Zhang L. et al. (eds) Energy Technology 2017. The DOI ...

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Convection during Thermally Unstable Solidification of Pb-Sn in a Magnetic …

Solidification of this alloy downward would be thermally unstable and solutally stable. It is believed that convection in metals can be suppressed by application of a magnetic field, as has been demonstrated during plane front solidi-fication of several electronic

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Liquid Phase Separation in Undercooled Cu-Co Alloys …

The rapid solidification can help freeze in the morphology of a higher-melting liquid and eases difficulties in studies of liquid phase separation kinetics. In the present work, the influence of static magnetic fields on liquid phase separation in bulk Cu 84 Co 16

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magnetic separation

Recycling centres use magnetic separation often to separate components from recycling, isolate metals, and purify ores. Overhead magnets, magnetic pulleys, and the magnetic drums were the methods used in the recycling industry. Magnetic separation is also useful in …

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MAGNETIC SEPARATORS

Removal of iron and collection of iron powder from various kinds of raw materials and semi-fi nished products are called magnetic separation. Kanetec off ers a wide variety of magnetic separators for use with lump materials, bulk materials, clay-like materials and liquids.

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Influence of high magnetic field on the liquid-liquid phase …

 · Zhang et al. [] carried out solidification experiments under 4 T magnetic field, and found that the magnetic field can affect the number and size distribution of Co-rich phase. Recent studies by Zhao and his colleagues [ 16 ] have shown that the imposition of the magnetic field on Cu–Co alloys altered the morphology and size distribution of Co-rich droplets on account of liquid-liquid phase …

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Non-monotonic changes in critical solidification rates …

The magnetic field intensity in this study was not sufficiently large to affect the thermodynamic parameters k 0 and m 18, and the solidification parameters, G L, R, D L, and C 0 were not modified ...

Magnetic separation and enrichment of MnBi by …

Article "Magnetic separation and enrichment of MnBi by solidification in high magnetic field" Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto stood ...

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Gradient Magnetic Separation

3.7.5 Magnetic Separation. High gradient magnetic separation (HGMS) (Trindale et al., 1974, and Liu, 1982) is based on coal being diamagnetic (repulsed by a magnet), whereas pyrite is paramagnetic (attracted to a magnet). The magnetic susceptibility of pyrite is 0.3 × 10-6 G/g (G = gauss), compared to coal at -0.4 × 10 -6 to –0.8 × 10 -4 G/g.

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Convection during Thermally Unstable Solidification of Pb-Sn in a Magnetic …

Solidification of this alloy downward would be thermally unstable and solutally stable. It is believed that convection in metals can be suppressed by application of a magnetic field, as has been demonstrated during plane front solidi-fication of several electronic

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CN102921713B

The invention discloses a solidification and stabilization treatment process for heavy-metal polluted soil. The process comprises heavy-metal polluted soil argillization, permanent-magnet strong magnetic separation, pollution degree gradation, medicament adding and ...

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