Report of Investigations 7802: Extraction of Molybdenum and Rhenium from Concentrates by Elextrooxidation

Details

• Personal Author:
  Lindstrom, Roald E. ; Scheiner, Bernard J.
• Corporate Authors:
  United States. Bureau of Mines
• Description:
  Electrooxidation techniques were investigated on a bench scale by the Bureau of Mines to determine the applicability of the process for extracting molybdenum and rhenium from low-grade molybdenite concentrates. Parameters affecting the extraction, such as pulp density, power consumption, reagent requirements for ph control, and electrolytic cell configuration, were studied. Molybdenum and rhenium extractions of 98 to 99 percent were achieved from several concentrates containing 4.76 to 28.6 percent molybdenum and 180 ppm to 1,000 ppm rhenium. Optimum results were obtained by maintaining ph values between 5.5 and 7.0 During electrolysis and allowing the final ph to rise to about 8.2. Reagent consumption was 4 to 6 pounds of sodium carbonate per pound of molybdenum extracted. The power consumption declined from a range of 12 to 25 kilowatt-hours per pound of molybdenum extracted with immersion electrodes to 9.7 Kilowatt-hours with a bipolar flow-through cell; however, molybdenum extraction was independent of cell configuration. [Description provided by NIOSH]
• Subjects:
  Metals 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:
  16 pdf pages
• NIOSHTIC Number:
  nn:10009070
• NTIS Accession Number:
  PB-225345
• Citation:
  NTIS: PB 225 345 :12 pages
• Federal Fiscal Year:
  1973
• Peer Reviewed:
  False
• Source Full Name:
  NTIS: PB 225 345
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:f9b09098bb02fb0204a5b08a6e5038546ff344f20fd410c7ccf331badc67d4a06573aa2c7da4dae4ef1511d5eb3fb11949e12f84f1ffe3fedbdc7c977b4d29b2
• Download URL:
  https://stacks.cdc.gov/view/cdc/201963/cdc_201963_DS1.pdf
• File Type:
  [PDF - 653.00 KB ]