Report of Investigations 9496: Electrolytic Cleaning and Conditioning of Gold Redox Probes in Flotation Circuits

Details

• Journal Article:
  Salt Lake City, UT: U.S. Department of the Interior, Bureau of Mines, RI 9496
• Personal Author:
  Rice, David A. ; Tolley, William K.
• Description:
  The U.S. Bureau of Mines (USBM) is currently investigating the electrochemistry of mineral flotation. A significant need in this area is greater reliability of sensors. The USBM is testing electrolytic methods to clean and condition redox-sensing electrodes to improve the reliability and extend the service life of these instruments in the harsh physical and chemical environment of mineral processing slurries. A novel method for removing scale from fouled electrodes has been developed that includes anodic polarization to 1.2 V versus the Ag/AgCl reference potential, followed by brief potentiodynamic conditioning. Laboratory results show that this technique removes calcarious deposits from gold sensing electrodes and returns the electrodes to useful service within approximately 10 min. Mechanical abrasion to remove the scale is thereby avoided. [Description provided by NIOSH]
• Subjects:
  Metals Occupational Health Safety
• Keywords:
  Anodic-polarization; Scale-corrosion; Redox-potentials; Noble-metals; Mining-engineering; Electrolysis; Molybdenum-ores; Slurries; Photomicrographs; Scanning-electron-microscopy; Mineral-industry; Electrochemical-cleaning; Electrodes; Flotation; Potentiostatic-cleaning; Gold-redox-electrodes; Potentiodynamic-conditioning; Mineral-industries
• Source:
  Salt Lake City, UT: U.S. Department of the Interior, Bureau of Mines, RI 9496, 1994 Jan; :1-7
• Series:
  NIOSH Numbered Publications   ; Mining Publications  
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Report
• Place as Subject:
  OSHA Region 8 ; Utah
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  SLRC - Salt Lake City Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  13 pdf pages
• NIOSHTIC Number:
  nn:10005129
• NTIS Accession Number:
  PB94-173333
• Federal Fiscal Year:
  1994
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:ee2f20a189e6b0d267ddb743d6ded04e17a9d11fa6f4c664ea4700c24a47d3d5ece235fa26c99e30f1ede410ae83d109c2f1d484b12a35a07d7633b42633cee9
• Download URL:
  https://stacks.cdc.gov/view/cdc/10114/cdc_10114_DS1.pdf
• File Type:
  [PDF - 2.62 MB ]