Recycling of rare metal containing advanced materials

Nobuaki Sato

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Recycling of niobium and titanium from their superconductor scraps was studied introducing the operation of bench scale plant of the recycling process. The scrap of Nb-Ti alloy was chlorinated at 300°C forming NbCl2-TiCl4 mixed chloride. The TiCl4 was removed from NbCl5 by the distillation at 200-250°C under flowing nitrogen. Then NbCl5 was converted to Nb(OBun )5 by the reaction with n-BuOH in benzene at ambient temperature. The purification of Nb(OBun)5 using a distillation method was not sufficient for the further purification of niobium. Selective reduction of NbCl5 by hydrogen and distillation of TaCl5 was proved to be effective for the tantalum removal resulting in the production of NbCl5 of 99.99%. The yield of the Nb(OBun)5 from the Nb-Ti alloy scraps during the operation of bench scale plant was 82.3%.

Original languageEnglish
Title of host publicationFirst International Conference on Processing Materials for Properties
PublisherPubl by Minerals, Metals & Materials Soc (TMS)
Pages1281-1284
Number of pages4
ISBN (Print)0873392566
Publication statusPublished - 1993 Dec 1
EventProceedings of the 1st International Conference on Processing Materials for Properties - Honolulu, HI, USA
Duration: 1993 Nov 71993 Nov 10

Publication series

NameFirst International Conference on Processing Materials for Properties

Other

OtherProceedings of the 1st International Conference on Processing Materials for Properties
CityHonolulu, HI, USA
Period93/11/793/11/10

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Sato, N. (1993). Recycling of rare metal containing advanced materials. In First International Conference on Processing Materials for Properties (pp. 1281-1284). (First International Conference on Processing Materials for Properties). Publ by Minerals, Metals & Materials Soc (TMS).