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Title: Design and Implementation of a Hall Effect Sensor Array Applied to Recycling Hard Drive Magnets

Abstract

Rare earths are an important resource for many electronic components and technologies. Examples abound including Neodymium magnets used in mobile devices and computer hard drives (HDDs), and a variety of renewable energy technologies (e.g., wind turbines). Approximately 21,000 metric tons of Neodymium is processed annually with less than 1% being recycled. An economic system to assist in the recycling of magnet material from post-consumer goods, such as Neodymium Iron Boron magnets commonly found in hard drives is presented. A central component of this recycling measurement system uses an array of 128 Hall Effect sensors arranged in two columns to detect the magnetic flux lines orthogonal to the HDD. Results of using the system to scan planar shaped objects such as hard drives to identify and spatially locate rare-earth magnets for removal and recycling from HDDs are presented. Applications of the sensor array in other identification and localization of magnetic components and assemblies will be presented.

Authors:
 [1];  [1];  [1];  [1]
  1. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
Work for Others (WFO)
OSTI Identifier:
1255653
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Conference: IEEE Southeast Con 2015, Fort Lauderdale, FL, USA, 20150409, 20150412
Country of Publication:
United States
Language:
English
Subject:
Hall Effect sensors; Neodymium; recycling; hard drives

Citation Formats

Kisner, Roger, Lenarduzzi, Roberto, Killough, Stephen M, and McIntyre, Timothy J. Design and Implementation of a Hall Effect Sensor Array Applied to Recycling Hard Drive Magnets. United States: N. p., 2015. Web.
Kisner, Roger, Lenarduzzi, Roberto, Killough, Stephen M, & McIntyre, Timothy J. Design and Implementation of a Hall Effect Sensor Array Applied to Recycling Hard Drive Magnets. United States.
Kisner, Roger, Lenarduzzi, Roberto, Killough, Stephen M, and McIntyre, Timothy J. Thu . "Design and Implementation of a Hall Effect Sensor Array Applied to Recycling Hard Drive Magnets". United States. doi:.
@article{osti_1255653,
title = {Design and Implementation of a Hall Effect Sensor Array Applied to Recycling Hard Drive Magnets},
author = {Kisner, Roger and Lenarduzzi, Roberto and Killough, Stephen M and McIntyre, Timothy J},
abstractNote = {Rare earths are an important resource for many electronic components and technologies. Examples abound including Neodymium magnets used in mobile devices and computer hard drives (HDDs), and a variety of renewable energy technologies (e.g., wind turbines). Approximately 21,000 metric tons of Neodymium is processed annually with less than 1% being recycled. An economic system to assist in the recycling of magnet material from post-consumer goods, such as Neodymium Iron Boron magnets commonly found in hard drives is presented. A central component of this recycling measurement system uses an array of 128 Hall Effect sensors arranged in two columns to detect the magnetic flux lines orthogonal to the HDD. Results of using the system to scan planar shaped objects such as hard drives to identify and spatially locate rare-earth magnets for removal and recycling from HDDs are presented. Applications of the sensor array in other identification and localization of magnetic components and assemblies will be presented.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2015},
month = {Thu Jan 01 00:00:00 EST 2015}
}

Conference:
Other availability
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