Preparation of high-purity vanadium by magnesium reduction of vanadium dichloride.

Details

• Personal Author:
  Block FF ; Campbell TT ; Schaller JL
• Description:
  High-purity vanadium was made by magnesium reduction of vanadium dichloride. Procedures used included (1) the preparation of vanadium tetrachloride by chlorination of partially reduced vanadium oxide-carbon briquets, (2) rechlorination of crude vanadium tetrachloride containing oxychloride compounds, (3) thermal decomposition of vanadium tetrachloride to vanadium trichloride, (4) hydrogen reduction or thermal disproportionation of vanadium trichloride to vanadium dichloride, (5) magnesium reduction of vanadium dichloride to vanadium sponge, and (6) consolidation of vanadium sponge to metal by arc-melting. This work showed that higher yields of high-quality vanadium metal can be prepared by reduction of vanadium dichloride than can be prepared from trichloride. Metal of >99.8 pct purity was prepared by magnesium reduction of vanadium dichloride with reaction efficiencies approaching 98 pct. Only minor losses of vanadium are experienced because of the high efficiencies of the individual process steps and because of the potential for recycling process streams. [Description provided by NIOSH]
• Subjects:
  Chemistry Magnesium Compounds Metals Minerals Occupational Health Safety Vanadium Compounds
• Keywords:
  Metallurgical-processes; Mineral-processing; Chemical-reactions; Metal-compounds; Metallic-compounds; Magnesium-compounds; Vanadium-compounds
• Series:
  Mining Publications
• ISSN:
  0360-2141
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  Oregon ; OSHA Region 10
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  ALRC - Albany Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  237-241
• Volume:
  4
• Issue:
  1
• NIOSHTIC Number:
  nn:10010577
• Citation:
  Metall Trans 1973 Jan; 4(1):237-241
• CAS Registry Number:
  Chlorine (CAS RN 7782-50-5) ; Magnesium (CAS RN 7439-95-4) ; Vanadium (CAS RN 7440-62-2)
• Federal Fiscal Year:
  1973
• Peer Reviewed:
  False
• Source Full Name:
  Metallurgical Transactions. B. Process Metallurgy
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
• Download URL:
  https://stacks.cdc.gov/view/cdc/246891/cdc_246891_DS1.pdf
• File Type:
  [PDF - 168.02 KB ]