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Recovery of Rhenium

Public Domain


Details

  • Personal Author:
  • Description:
    Rhenium is recovered from dusts and fumes collected in molybdenite roasting by leaching and adsorption with activated carbon. Further recovery from the carbon is accomplished by elution with a water- soluble alcohol or a water-alcohol mixture, if molybdate is first eluted with brine. The c is later regenerated for reuse by washing with water. A suitable brine for removing mo consists of 150-350 g nacl or nacl+na2so4/l. To elute the re the alcohol can contain up to 50 pct water. The eluate can be boiled down to crystallize the perrhenate, or the latter can be extracted with a Tertiary amine, stripped with nh4oh, and the ammonium perrhenate reduced by h2 to re. When re was adsorbed in a column of activated carbon from an aqueous solution at ph 8.5 Containing 1 g re/l and 10 g mo/l, and the mo was washed out completely with 25 pct nacl solution, the c was contacted with 4 bed volumes of methyl alcohol containing 25 pct h2o to recover 97 pct of the re in the solution. The c was washed with water and used for 20 more cycles. [Description provided by NIOSH]
  • Subjects:
  • Series:
    Mining Publications
  • Document Type:
    Text
  • Genre:
    Other
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Division:
    RERC - Reno Research Center
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Pages in Document:
    3 pdf pages
  • NIOSHTIC Number:
    nn:10011834
  • Citation:
    U S Pat 3 862 292 1975 Jan; :
  • Federal Fiscal Year:
    1975
  • Peer Reviewed:
    False
  • Source Full Name:
    U.S. Pat. 3,862,292; Jan. 21, 1975; Chem. Abstr. 82:127,114P, 81:94,464B
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:56f4c4aea2fb9904df205ed8d1229c89cba8311bf2453ad377b6e1de87b9365d7734f28dbbef22dcf0d808368f39d65e03e0ade8072479c2934962eec5a261db
  • Download URL:
  • File Type:
    Filetype[PDF - 173.46 KB ]
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