Selective Nickel Electrowinning from Dilute Electrolytes

Details

• Personal Author:
  Richardson, Paul E. ; Smith, Gerald R. ; Thompson WR
• Description:
  Critical and strategic metals are often present in small quantities in low-grade domestic ores. When these ores are leached, the resulting solution usually contains the metals in very dilute quantities. Selective electrowinning from dilute electrolytes was investigated by the Bureau of Mines. A metal deposit containing 84 pct nickel was electrowon from the leach solution of a complex domestic ore bulk flotation concentrate originally containing approximately 2 wt-pct nickel. Key to achieving accelerated deposition rates, in the case of dilute solutions, is the rapid movement of the electrolyte through the electrowinning cell. Pure, synthetic nickel electrolytes were used to establish deposition parameters, and to optimize electrolyte velocity or mass transfer rates. Hydrodynamic and electrodeposition parameters for both the synthetic and leach electrolytes are presented and the experimental research described. Selective electrowinning appears to offer a viable alternative to physical separation methods to obtain separate metal "concentrates" from low-grade ores. [Description provided by NIOSH]
• Subjects:
  Occupational Health Safety
• Series:
  Mining Publications
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Conference Publications ; Case Report
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  AVRC - Avondale Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-20
• NIOSHTIC Number:
  nn:10002795
• Citation:
  NTIS: PB83/214858; :1-20
• Federal Fiscal Year:
  1983
• Peer Reviewed:
  False
• Source Full Name:
  NTIS: PB83/214858
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:efa6c6e8519e54046653dc93eb2a30f8103e0c6679165f36116107c572a53ea1e647199413e9642b4ada04b74c5a19ba64167f0199389de71024a2f5db0244e6
• Download URL:
  https://stacks.cdc.gov/view/cdc/233938/cdc_233938_DS1.pdf
• File Type:
  [PDF - 8.97 MB ]