THE NITROPHOS EXTRACTION PROCESS FOR THE SEPARATION OF ZIRCONIUM AND HAFNIUM
Journal Article
·
· Chem. Eng. Progr.
OSTI ID:4190528
The several possible processes for separating zirconium and hafnium are reviewed briefly and the reasons for selecting the Nitrophos liquid-liquid extraction process, by means of a nitric acid-tributyl phosphate system, are given. The laboratory and pilot plant experiments are described and the data presented. Under the conditions studied, reactor-grade zirconium can be prepared in a column with less than ten theoretical stages. The commercial plant design is described and preliminary operating results are given. Purified zirconlum containing less than 50 ppm hafnium has been produced in largescale operations. (auth)
- Research Organization:
- National Research Corp., Pensacola, Fla.; Dixon Chemical and Research Corp., Bloomfield, N.J.
- NSA Number:
- NSA-14-013792
- OSTI ID:
- 4190528
- Journal Information:
- Chem. Eng. Progr., Journal Name: Chem. Eng. Progr. Vol. Vol: 55, Symposium Ser. No. 27
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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