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Floating Diamonds with Nanomagnetic Particles
Author(s) -
Vatta Laura L.
Publication year - 2005
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200550717
Subject(s) - ferrofluid , sedimentation , economies of agglomeration , diamond , materials science , suspension (topology) , magnetic field , magnetic nanoparticles , particle size , particle (ecology) , nanotechnology , mechanics , composite material , nanoparticle , chemical engineering , physics , geology , engineering , paleontology , oceanography , mathematics , quantum mechanics , sediment , homotopy , pure mathematics
In the diamond industry, ferrofluids are used in ferrohydrostatic separators for the density separation of diamonds from gangue material. The size of the magnetic core of the coated particles forming the ferrofluid suspension is vital in ensuring the stability of the fluid. The particle size must be small enough such that sedimentation does not occur in a magnetic field gradient and under the influence of a gravitational field and such that magnetic agglomeration can be overcome. This paper discusses the particle size requirements for fluid stability under the influence of these effects.