Knowledge Management System Of Institute of metal research,CAS
The Influences of Stirring on the Recrystallization of Ammonium Perrhenate | |
Tang, Junjie; Feng, Li; Zhang, Chunwei; Sun, Yuan; Wang, Long; Zhou, Yizhou; Fang, Dawei; Liu, Yan | |
2020 | |
Source Publication | APPLIED SCIENCES-BASEL
![]() |
Volume | 10Issue:2 |
Abstract | Ammonium perrhenate is widely used in alloy manufacturing, powder processing, the catalytic industry, and other fields. Recrystallization can improve the specific surface area of ammonium perrhenate, reduce its particle size, and improve its particle size distribution uniformity. Therefore, recrystallized ammonium perrhenate can obtain better application benefits in the above fields. Stirring is an important factor that affects the recrystallization of ammonium perrhenate, and this paper systematically analyzes the influence of the stirring paddle types and stirring intensities on ammonium perrhenate during the homogeneous recrystallization process, ultimately revealing the relationship between the growth rate of ammonium perrhenate and the stirring process. Particle image velocimetry physical simulation results showed that the flow field in the reactor was more evenly distributed when using the disc turbine impeller, and a relatively uniform velocity liquid flow area was formed in the whole reactor, while the low-velocity liquid flow area was smaller. Therefore, this information, combined with SEM test results, suggests that under the same recrystallization time and stirring intensity, the stirring effect of a disc turbine impeller is more suitable than a propelling propeller and an Intermig impeller for the recrystallization process of ammonium perrhenate. Moreover, the XRD patterns and SEM analysis showed that if the agglomeration in the systems was too strong or too weak, the growths of the (101) crystal plane and (112) crystal plane were restrained, which caused an attenuation in the growth rates along the crystallographic directions that were orthogonal to the crystal faces. Finally, the reduction experiments show that the recrystallization of ammonium perrhenate could improve the phase parameters of rhenium powders. |
DOI | 10.3390/app10020656 |
WOS ID | WOS:000522540400232 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.imr.ac.cn/handle/321006/83269 |
Collection | 中国科学院金属研究所 |
Recommended Citation GB/T 7714 | Tang, Junjie,Feng, Li,Zhang, Chunwei,et al. The Influences of Stirring on the Recrystallization of Ammonium Perrhenate[J]. APPLIED SCIENCES-BASEL,2020,10(2). |
APA | Tang, Junjie.,Feng, Li.,Zhang, Chunwei.,Sun, Yuan.,Wang, Long.,...&Liu, Yan.(2020).The Influences of Stirring on the Recrystallization of Ammonium Perrhenate.APPLIED SCIENCES-BASEL,10(2). |
MLA | Tang, Junjie,et al."The Influences of Stirring on the Recrystallization of Ammonium Perrhenate".APPLIED SCIENCES-BASEL 10.2(2020). |
Files in This Item: | There are no files associated with this item. |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment