التفاصيل البيبلوغرافية
| العنوان: |
Effect of Pyrite on the Leaching Kinetics of Pitchblende in the Process of Acid In Situ Leaching of Uranium |
| المؤلفون: |
Peng Wang, Kaixuan Tan, Yongmei Li, Zhenzhong Liu, Chunguang Li, Wanyu Tan, Yunting Tian, Wuyang Huang |
| المصدر: |
Minerals; Volume 12; Issue 5; Pages: 570 |
| بيانات النشر: |
Multidisciplinary Digital Publishing Institute |
| سنة النشر: |
2022 |
| المجموعة: |
MDPI Open Access Publishing |
| مصطلحات موضوعية: |
pitchblende, pyrite, acid leaching mining, shrinking particle model |
| جغرافية الموضوع: |
agris |
| الوصف: |
In the process of acid in situ leaching of sandstone uranium ore, pyrite, which is a common associated mineral of pitchblende, would inevitably participate in the reaction. Therefore, it is important to study the influence of pyrite on the leaching kinetics of pitchblende. In this study, we compared the difference leaching rates of pitchblende in the systems of sulfuric acid–hydrogen peroxide, sulfuric acid–hydrogen peroxide–pyrite and sulfuric acid–pyrite and studied the influence of temperature and pyrite quantity on the leaching rate of pitchblende. The results show that the leaching process of pitchblende follows the shrinking particle model controlled by a chemical reaction, and the apparent activation energy Ea of the leaching reaction is (3.74 ± 0.40) × 10 kJ/mol. Pyrite itself cannot promote the dissolution of pitchblende; however, it can promote the leaching of pitchblende in the presence of an oxidizer. Increasing the quantity of pyrite in a certain range can increase the leaching rate of pitchblende, and the reaction order of pyrite is 0.36. |
| نوع الوثيقة: |
text |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| Relation: |
Mineral Processing and Extractive Metallurgy; https://dx.doi.org/10.3390/min12050570 |
| DOI: |
10.3390/min12050570 |
| الاتاحة: |
https://doi.org/10.3390/min12050570 |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: |
edsbas.2EF03445 |
| قاعدة البيانات: |
BASE |