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Electrochemical Machining Recycling for Metal Recovery and Waste Elimination

[+] Author Affiliations
Brian Skinn, Savidra Lucatero, Timothy Hall, Stephen Snyder, E. Jennings Taylor, Maria Inman

Faraday Technology, Inc., Clayton, OH

Paper No. MSEC2014-4048, pp. V001T05A008; 7 pages
doi:10.1115/MSEC2014-4048
From:
  • ASME 2014 International Manufacturing Science and Engineering Conference collocated with the JSME 2014 International Conference on Materials and Processing and the 42nd North American Manufacturing Research Conference
  • Volume 1: Materials; Micro and Nano Technologies; Properties, Applications and Systems; Sustainable Manufacturing
  • Detroit, Michigan, USA, June 9–13, 2014
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-4580-6
  • Copyright © 2014 by ASME

abstract

This paper will discuss an integrated technology being developed by Faraday to recover and recycle metals from electrochemical machining (ECM) electrolytes. ECM is suited for low mass removal, high value-added manufacturing steps that cannot be easily performed using conventional machining, whether due to workpiece material properties, tooling limitations, or high surface integrity requirements. Sludge byproducts formed during conventional ECM processes are difficult and expensive to recycle, and discarding the sludge results in the loss of potentially valuable “waste” metal as well as entrained electrolyte. The FARADAYIC® Recycling ECM [(R) ECM] technology machines metals into the electrolyte to a concentration of 800–1500 ppm (mg L−1), and subsequently recovers those metals by electrowinning in solid/metallic form devoid of hydroxides/hydrated oxides, without intermediate electrolyte processing.

Copyright © 2014 by ASME
Topics: Metals , Recycling , Machining

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