Verifying Lohofer's equations to enhance electrodynamic sorting

Update Item Information
Title Verifying Lohofer's equations to enhance electrodynamic sorting
Publication Type thesis
School or College College of Mines & Earth Sciences
Department Metallurgical Engineering
Author Ray, Jaclyn Diane
Date 2016
Description Despite the fact that scrap metal recycling is a profitable industry, there are limitations to the methods currently being used to sort the scrap. Particle sizes below 2.5~cm present the biggest challenge for current sorting technologies. This limitation creates a need for an improved technique to sort scrap metal. Electrodynamic Sorting, which uses stationary magnets with a time-varying magnetic field, is investigated as a tool that can overcome these limitations within the scope of this paper. The objective of this thesis is to provide insight into the properties governing Electrodynamic Sorting. This thesis explores the relationship between power and frequency for two different kinds of magnets. The end results show that the magnets, which are made of different materials, both had a parabolic fit when power was plotted against current as well as when power was plotted against frequency. Another contribution from this work is a comparison of force predictions determined mathematically and the force measured experimentally. With current held constant while frequency was varied, the ejection force on a particle placed within a gapped toroid magnet was measured and plotted against a mathematically predicted plot. The results of the measurements agree with the predicted plot for various size, shape, and types of nonferrous materials used. This information allows us to make some inferences about this Electrodynamic Sorting technique and its potential use in industry.
Type Text
Publisher University of Utah
Subject Eddy Currents; Electrodynamic Sorting; Electromagnetics; Magnetic Separation; Variable Frequency
Dissertation Name Master of Science
Language eng
Rights Management ©Jaclyn Diane Ray
Format application/pdf
Format Medium application/pdf
ARK ark:/87278/s6dz4d9d
Setname ir_etd
ID 1343932
Reference URL https://collections.lib.utah.edu/ark:/87278/s6dz4d9d
Back to Search Results