Zirconium-hafnium production in a zero liquid discharge process

Details Zirconium-hafnium production in a zero liquid discharge process Zirconium-hafnium production in a zero liquid discharge process

1990-12-10

1992-05-12

Dawson, Robert A.

Liquid purification or separation

Processes

Chromatography

75612, 2101982, 210635, 210682, 210754, 210770, 423 70, 423 73, B01D 1508

Patent

active

051124939

ABSTRACT:
A simple, low cost continuous process for separating and purifying zirconium and hafnium which eliminates liquid waste and facilitates the management of RCRA and LLW wastes is provided. An aqueous zirconium and hafnium--containing feed solution is prepared and fed to a continuously rotating annular chromatograph containing a bed of acid exchange resin. An acid eluant, such as hydrochloric acid, nitric acid, phosphoric acid or the like, is fed through the acid exchange bed while chromatograph is rotating, which separates the feed into substantially pure zirconium and hafnium fractions and into RCRA and LLW waste fractions. The zirconium and hafnium are processed further into nuclear quality zirconium and hafnium metals. The acid eluant is recycled for reuse in the chromatograph, and the RCRA and LLW waste fractions are disposed of in solid form.

REFERENCES:
patent: 2546953 (1951-03-01), Street, Jr.
patent: 2571237 (1951-10-01), Hansen
patent: 2759793 (1956-08-01), Lister et al.
patent: 2860956 (1958-11-01), Arden et al.
patent: 3032388 (1962-05-01), McCord et al.
patent: 3510292 (1970-05-01), Hardy et al.
patent: 4780239 (1988-10-01), Snyder et al.
patent: 4915843 (1990-04-01), Taniguchi et al.
patent: 5023061 (1991-06-01), Snyder et al.
patent: 5024749 (1991-06-01), Snyder et al.
patent: 5045209 (1991-09-01), Snyder et al.
Russian Chemical Review, Jul. 1967, p. 527.
Journal of Chemical Educational (no date), p. 534.
Belgian Report No. 80B (1961), pp. A1-A2.
J. M. Begovich and W. G. Sisson, Hydrometallurgy, 10, pp. 11-20 (1983).
W. D. Wilkinson and W. F. Murphy, "Nuclear Reactor Metallurgy," D. Van Nostrand Co., Inc., Princeton (1958) pp. 245-249.

Affiliated with

Also associated with

Rating

Zirconium-hafnium production in a zero liquid discharge process does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Zirconium-hafnium production in a zero liquid discharge process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zirconium-hafnium production in a zero liquid discharge process will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2425380