Report of Investigations 9335: Production of Lead Metal by Molten-Salt Electrolysis with Energy-Efficient Electrodes

Details

• Journal Article:
  Reno, NV: U.S. Department of the Interior, Bureau of Mines, RI 9335
• Personal Author:
  Chambers, Michael F. ; Murphy, James E.
• Description:
  The U.S. Bureau of Mines investigated electrode designs for electrowinning lead metal from a LiCl-KCl-PbCl2 electrolyte at 450 deg C. The major objective of this investigation was to decrease the energy requirement for lead electrowinning. Electrolysis was performed in a bench-scale cell using several graphite electrode assemblies. Such parameters as electrode spacing, current density, and chlorine gas removal from the anode were investigated in the bench-scale tests. An optimum electrode assembly, termed the sawtooth design, was scaled up and operated at 3,000 and 4,000 A. The sawtooth electrodes operating at 3,000 A produced lead for 0.66 Kw.H/kg. The electrodes were constructed by cutting large triangular grooves in the electrode surfaces. The electrodes were placed together such that the triangular peaks of one electrode projected into the triangular valleys of the other electrode. Chlorine did not build up on the anode with the sawtooth electrodes. [Description provided by NIOSH]
• Subjects:
  Lead Metals Occupational Health Safety
• Source:
  Reno, NV: U.S. Department of the Interior, Bureau of Mines, RI 9335, 1991 Jan; :1-11
• Series:
  NIOSH Numbered Publications   ; Mining Publications  
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Report
• Place as Subject:
  Nevada ; OSHA Region 9
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  RERC - Reno Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  17 pdf pages
• NIOSHTIC Number:
  nn:10008548
• NTIS Accession Number:
  PB92-177146
• Federal Fiscal Year:
  1991
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:b3e32308c5acf3fbd609ff91639a3cfce086466f9e3373bf6aa1152cbc2404e0f9e2ffff4c19d77274b65a544b9d526bc0023cf676dd8a11c3b18792f044db07
• Download URL:
  https://stacks.cdc.gov/view/cdc/10647/cdc_10647_DS1.pdf
• File Type:
  [PDF - 7.05 MB ]