The small particle limit for electromagnetic separation

[Sideliner]

Well,

The title says it all. I am trying to get someone with
IEEE access to tell me what the bottom line is in their
article 334180."The small particle limit for
electromagnetic separation Fletcher, D. Gerber, R. Dept. of ..." If I had access, I'd do it myself. The google
exerpt suggested that particles smaller than 0.5 mm
enters rotation. Perhaps this physical reorientation prevents a net force to bear in any one direction? Thanks Sideliner PS: the bottom line formula and effect would
be very useful. Thanks

 

[MJR2]

We regularly work with particles down to the micron and sub-micron range. It depends..... On lots of things. We need more information on just what you want to do. But 0.5mm is no where near the limit.

Kaolin clay has impurities at 95%<2um.
Red blood cells are 5um.
Magnetite for heavy media is often 95%<325 mesh.
All separate by magnetic separation. Magnetite using pretty standard permanent magnets.

 

[Sideliner]

Sorry,
The title doesn't show "eddy current" separation. But that
is the exact title of the article. Do you have access to document IEEE 334184? It describes why conductors smaller than 0.5 mm do not respond well to "eddy current" forces. What does that article say? Once again, this involves the separation of small CONDUCTORS from non conductors by the force of electromagnetic induction. (lenze's law or the faucalt effect) No ferromagnetic traction is involved. Your help is greatly appreciated!!!!! Please! Thanks! Sideliner