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Efficiency Optimization and Prediction in High‐Gradient Magnetic Centrifugation
Author(s) -
Lindner J.,
Wagner K.,
Eichholz C.,
Nirschl H.
Publication year - 2010
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201000112
Subject(s) - magnetic separation , filtration (mathematics) , centrifugation , drag , magnetic field , separation process , superposition principle , separation (statistics) , filter (signal processing) , chromatography , magnetic nanoparticles , materials science , mechanics , analytical chemistry (journal) , chemistry , physics , nanotechnology , mathematics , engineering , nanoparticle , electrical engineering , statistics , quantum mechanics , metallurgy
In order to separate small magnetizable particles down to the micro‐ and nanometer scale, high‐gradient magnetic separation is a well‐established process. The superposition of magnetic filtration with centrifugation, called magnetic field‐enhanced centrifugation, permits continuous separation. The separation efficiency of magnetic filters and the prediction of the efficiency is described. The separation efficiency of one single stage could be enhanced from 51 to 78 % by increasing the wire number and improving the wire cross section. The separation efficiency on different particle sizes at different filter stage numbers and comparison to the prediction of separation efficiency based on magnetic forces and the fluid drag force is demonstrated.