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Metallurgical and Materials Transactions B

, Volume 3, Issue 2, pp 575–578 | Cite as

Electrowinning of zirconium from zirconium tetrachloride

  • G. M. Martinez
  • D. E. Couch
Process Metallurgy

Abstract

The Bureau of Mines has produced ductile zirconium dendrites at 800°C in an electrolyte containing NaCl-NaF-ZrCl4. Sublimed zirconium tetrachloride was fed into NaCl containing a slight excess of NaF above that required to complex 2 pct Zr as Na2ZrF6. The chlorine gas generated at the graphite anode during electrolysis was confined in and vented out of the cell through a high-density graphite tube into a scrubbing solution of NaOH. At a cathode current density of 300 amp per sq ft, the zirconium metal produced was 95 pct +200 mesh size. The average anode and cathode current efficiencies were 86 and 96 pct. The metal product in the form of arc-melted buttons has a hardness ranging from 130 to 170 Bhn and can be cold-rolled into 15-mil thick strips without intermediate annealing.

Keywords

Zirconium Metallurgical Transaction Cathode Current Density Graphite Tube Graphite Anode 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© The Metallurgical of Society of AIME 1972

Authors and Affiliations

  • G. M. Martinez
    • 1
  • D. E. Couch
    • 2
  1. 1.U.S. Bureau of MinesReno Metallurgy Research CenterReno
  2. 2.U.S. Bureau of MinesBoulder City Metallurgy Research LaboratoryBoulder City

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