Title:
酸化ジルコニウムと酸化ハフニウム混合物の乾式精錬分離方法
Document Type and Number:
Japanese Patent JP6470287
Kind Code:
B2
Abstract:
Disclosed in the invention is a method for separating zirconium oxide/hafnium oxide by pyrometallurgy. The mixture of zirconium oxide/hafnium oxide, carbon and pure bromine react one hour at 650°C to get the zirconium and hafnium bromide, then the zirconium and hafnium bromide are added to molten salt mixture for distillation separation, and the rectifying tower bottom is maintained two hours below 357°C, to get the non-target substance; and maintained five hours at 357°C to collect the target substance zirconium tetrabromide; the residue in the reactor is retained, then rectification separation is performed in the same device, heated to 400°C to retain more than five hours, to get hafnium tetrabromide, then the zirconium tetrabromide and hafnium tetrabromide are replaced by magnesium to get the pure zirconium and pure hafnium. Since the separation effect is good and equipment investment is economical, it is easy to achieve industrialization. This invention technology can fill the gap in china, to make great contributions to the localization of zirconium and hafnium nuclear materials.
Inventors:
Zhu Xingfeng
Application Number:
JP2016539057A
Publication Date:
February 13, 2019
Filing Date:
September 29, 2014
Export Citation:
Assignee:
Zhu Xingfeng
International Classes:
C22B9/10; C01G25/04; C01G27/04; C22B5/02; C22B34/14
Foreign References:
| US2744060 | ||||
| US20130155581 | ||||
| US3012850 |
Attorney, Agent or Firm:
Harakenzo world patent & trademark