Report of Investigations 8145: Extraction and Recovery of Molybdenum and Rhenium from Molybdenite Concentrates by Electrooxidation: Process Demonstration

Details

• Personal Author:
  Lindstrom, Roald E. ; Pool, Danny L. ; Scheiner, Bernard J.
• Corporate Authors:
  United States. Bureau of Mines
• Description:
  The federal Bureau of Mines has successfully demonstrated an electrooxidation-solvent extraction-carbon adsorption process for recovering molybdenum and rhenium from offgrade concentrates. The flow sequence consists of dissolution of metal values by electrooxidation, liquid-solid separation by thickening, acidification and chlorate ion removal by sulfur dioxide treatment, solvent extraction to concentrate the molybdenum and rhenium, separation of molybdenum and rhenium by carbon adsorption, and metal recovery by crystallization. Molybdenum and rhenium were recovered as ammonium paramolybdate and ammonium perrhenate. Electrolysis of brine-concentrate pulps to generate a hypochlorite oxidizing agent in situ resulted in the dissolution of 98.9 and 99.1 pct of the molybdenum and rhenium, respectively, at an energy consumption of 13.7 Kwhr/lb of molybdenum extracted. [Description provided by NIOSH]
• Subjects:
  Metals Mining Occupational Health Safety
• Series:
  Mining Publications
• Subseries:
  Report of Investigations
• ISSN:
  1066-5552 (print)
• Publisher:
  United States. Bureau of Mines
• Document Type:
  Text
• Genre:
  Case Report
• Rights:
  Public Domain
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  RERC - Reno Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  18 pdf pages
• NIOSHTIC Number:
  nn:10007771
• NTIS Accession Number:
  PB-255399
• Citation:
  NTIS: PB 255 399 :12 pages
• Federal Fiscal Year:
  1976
• Peer Reviewed:
  False
• Source Full Name:
  NTIS: PB 255 399
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:c6c6cdbe3330556b1f47763bd8a08f785c9a03fdc8c038be5c1a0b9a9a5ea5c64df9c5dd971e0bdfeda2bb3fc4449f5f8d06585896081bd0c1ed893fa46d7fc1
• Download URL:
  https://stacks.cdc.gov/view/cdc/201852/cdc_201852_DS1.pdf
• File Type:
  [PDF - 770.03 KB ]