ferrofluid sink float separator

ferrofluid sink float separator

Ferrofluid Sink Float Separator - bdkj-kelheim.de

Ferrofluid Sink Float Separator Similar separators were subsequently and respectively disclosed by Leon Mir in the U.S. Pat. No. 4,052,297 Saburo Kazama, et al. in the U.S. Pat. No. 4,113,608 and J. Shimoiizaka, et al. in IEEE Transactions on Magnetics, vol. Mag-16, No. 2, March 1980. Ferrofluid Sinkfloat Separators For Separating

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NASA CR-132318 SINK-FLOAT FERROFLUID SEPARATOR

2020-8-6  NASA CR-132318 FINAL REPORT SINK-FLOAT FERROFLUID SEPARATOR APPLICABLE TO FULL SCALE NONFERROUS SCRAP SEPARATION Contract No. NAS 1-11793 Prepared for National Aeronautics and Space Administration Langley Research Center Langley Station Hampton, Virginia 23365 Prepared by Avco Systems Division Lowell Industrial Park Lowell, Massachusetts 01851

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Ferrofluid sink/float separators for separating ...

A ferrofluid sink/float separator embodied in the present invention is shown in FIG. 2, which comprises a horizontal separating tank 20 made of a nonmagnetic material, an electromagnet 10 having two magnetic poles N and S, a first transporting mechanism 30, a material discharging trough 50 made of a nonmagnetic material, and a second ...

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US5762204A - Ferrofluid sink/float separators for ...

A ferrofluid sink/float separator for separating nonmagnetic materials of different densities comprises a horizontal separating tank and a magnetic field generating mechanism. The separating tank is filled with a ferrofluid capable of being induced by the magnetic field generating mechanism to have a magnetic field gradient and various apparent densities in the direction of earth gravity.

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Materials handling apparatus for a ferrofluid sink/float ...

A ferrofluid sink/float separator with access means into and out of the ferrofluid comprising: a. means for supplying a magnetic field capable of supporting an unconstrained column of ferrofluid within the magnetic field, said magnetic field further having defined therein a predetermined volume of space, the top of said volume is positioned in ...

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NASA Technical Reports Server (NTRS)

2021-5-7  Sink-float ferrofluid separator applicable to full scale nonferrous scrap separation Design and performance of a ferrofluid levitation separator for recovering nonferrous metals from shredded automobiles are reported. The scrap separator uses an electromagnet to generate a region of constant density within a pool of ferrofluid held between the magnetic poles; a saturated kerosene base ...

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NASA TECH BRIEF

2020-8-6  Ferrofluid Separator for Nonferrous Scrap Separation Ferrofluid sink-float separation is an automated process for separating a mixture of nonferrous scrap metals. This method promises to be a profitable process, based upon test data obtained from a prototype separator, and the successful recovery of ferrofluid from the separated scrap.

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Ferrofluid separator for nonferrous scrap separation ...

Behavior of nonmagnetic objects within separator is essentially function of density, and independent of size or shape of objects. Results show close agreement between density of object and apparent density of ferrofluid required to float it. Results also demonstrate that very high separation rates are achievable by ferrofluid sink-float separation.

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NASA Technical Reports Server (NTRS) 19740003190:

NASA Technical Reports Server (NTRS) 19740003190: Sink-float ferrofluid separator applicable to full scale nonferrous scrap separation Item Preview

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Sink and Float Separation Process - 911 Metallurgist

2016-6-9  The Sink and Float separator at Bunker Hill receives about 70 percent of the mine ore of sizes ranging from 1¼-inch to 1/8-inch. It rejects as unneconomic coarse waste about 50 percent of the separator feed, or in other words, about 35 percent of the whole mine output.

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Ferrofluid Sink Float Separator - ralcolor.de

Ferrofluid Separator for Nonferrous Scrap Separation Ferrofluid sink-float separation is an automated process for separating a mixture of nonferrous scrap metals. This method promises to be a profitable process, based upon test data obtained from a prototype separator, and the successful recovery of ferrofluid from the separated scrap.

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Sink-float ferrofluid separator applicable to full scale ...

The scrap separator uses an electromagnet to generate a region of constant density within a pool of ferrofluid held between the magnetic poles; a saturated kerosene base ferrofluid as able to float all common industrial metals of interest. Conveyors move the scrap into the ferrofluid for separation according to density.

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AIREX: Sink-float ferrofluid separator applicable to full ...

2015-4-9  Design and performance of a ferrofluid levitation separator for recovering nonferrous metals from shredded automobiles are reported. The scrap separator uses an electromagnet to generate a region of constant density within a pool of ferrofluid held between the magnetic poles; a saturated kerosene base ferrofluid as able to float all common industrial metals of interest.

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Sink-float ferrofluid separator applicable to full scale ...

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NASA Technical Reports Server (NTRS) 19740003190:

NASA Technical Reports Server (NTRS) 19740003190: Sink-float ferrofluid separator applicable to full scale nonferrous scrap separation Item Preview

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AIREX: Ferrofluid separator for nonferrous scrap

2015-5-11  Behavior of nonmagnetic objects within separator is essentially function of density, and independent of size or shape of objects. Results show close agreement between density of object and apparent density of ferrofluid required to float it. Results also demonstrate that very high separation rates are achievable by ferrofluid sink-float separation.

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What is Ferrofluid? - Magnacol

One experiment you might like to try is to make a sink/float separator. Take two strong magnets and fix them to be about a centimetre apart, attracting each other. You will need to fix them strongly so they do not meet as there is a danger they could shatter. Put some ferrofluid into the space between the magnets and it will form a plug of fluid.

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A contribution to the theory of separation in a

1996-7-1  The scope of the sink-float technique is restricted by a limited range of densities of the separating medium, the upper limit of ferrosilicon medium being approximately 3.5 g/cm3 and that of Clerici solution about 4.2 g/cm3 at room temperature. ... The general arrangement of forces acting on the particle in the rotating ferrofluid separator is ...

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Wide-range density separation of mineral particles in a ...

2007-8-18  and contain the ferrofluid and sample. A central slid-ing valve in the cell isolates sink and float portions of separated samples. By varying the magnetic field gradient applied to a ferrofluid, it is possible to selec-tively sink or float a nonmagnetic solid object con-tained in the ferrofluid. The ferrofluid force, F^, on the object tends to

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Density Separation of Solids in Ferrofluids with

2006-12-5  An apparent density of the fluid can be defined from the force equations, and since the apparent density can be much larger than the true density, it is possible to levitate or float dense objects. Mixtures of solids with a density greater than the apparent density sink while lower density solids float.

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AIREX: Sink-float ferrofluid separator applicable to full ...

2015-4-9  Design and performance of a ferrofluid levitation separator for recovering nonferrous metals from shredded automobiles are reported. The scrap separator uses an electromagnet to generate a region of constant density within a pool of ferrofluid held between the magnetic poles; a saturated kerosene base ferrofluid as able to float all common industrial metals of interest.

Read More
What is Ferrofluid? - Magnacol

One experiment you might like to try is to make a sink/float separator. Take two strong magnets and fix them to be about a centimetre apart, attracting each other. You will need to fix them strongly so they do not meet as there is a danger they could shatter. Put some ferrofluid into the space between the magnets and it will form a plug of fluid.

Read More
AIREX: Ferrofluid separator for nonferrous scrap

2015-5-11  Behavior of nonmagnetic objects within separator is essentially function of density, and independent of size or shape of objects. Results show close agreement between density of object and apparent density of ferrofluid required to float it. Results also demonstrate that very high separation rates are achievable by ferrofluid sink-float separation.

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CiNii 図書 - Sink-float ferrofluid separator applicable

Sink-float ferrofluid separator applicable to full scale nonferrous scrap separation : final report prepared for National Aeronautics and Space Administration, Langley Research Center ; prepared by Avco Systems Division (海外研究開発レポート, data no. R-599-(B)) 資料協会, [19--]

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Wide-range density separation of mineral particles in a ...

2007-8-18  and contain the ferrofluid and sample. A central slid-ing valve in the cell isolates sink and float portions of separated samples. By varying the magnetic field gradient applied to a ferrofluid, it is possible to selec-tively sink or float a nonmagnetic solid object con-tained in the ferrofluid. The ferrofluid force, F^, on the object tends to

Read More
Density Separation of Solids in Ferrofluids with

2006-12-5  An apparent density of the fluid can be defined from the force equations, and since the apparent density can be much larger than the true density, it is possible to levitate or float dense objects. Mixtures of solids with a density greater than the apparent density sink while lower density solids float.

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Density separation of solids in ferrofluids with

2021-5-26  Nonmagnetic solids in a superparamagnetic ferrofluid are subjected to body forces proportional to the intensity of magnetization of the fluid and the gradient of the magnetic field. An apparent density of the fluid can be defined from the force

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Application of ferrofluid density separation to

2021-6-16  @article{osti_7187678, title = {Application of ferrofluid density separation to particles in the micrometer-size range}, author = {Strebin, Jr., R. S. and Johnson, J. W. and Robertson, D. M.}, abstractNote = {A device designed and described by AVCO* as a ''Ferrofluid Density Separator''/sup (1)/ develops an apparent fluid density from nominally 2 to 20 g/cm/sup 3/ dependent on the magnitude of ...

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Modelling of the Separation Process in a

2007-4-23  The model is replacing the ferrofluid by imposing a drag force on the particle. The results of the simulation were presented in the form of the distribution of the density tracers into the sink fraction. These results are realistic and show the advantages of DEM to understand the complex flow behavior of granular materials.

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The modelling of the separation process in a ...

2005-4-1  The modelling and the calculation of the apparent density prove that the apparent density is constant along the vertical only in a limited region (it was already observed experimentally Svoboda et al., 1996).Especially at the bottom of the chamber the apparent density drops steeply and

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