| 发明名称 |
A method for concentrating rare-earth metals in phosphogypsum |
| 摘要 |
The present invention relates to a method for producing rare-earth metals (REM) compounds by complex processing of apatite, in particularly to a method for concentrating rare-earth metals (REM) in phosphogypsum, where to a process of decomposition of the REM containing raw phosphate material with sulphuric acid, a sodium salt in the amount of 0.25-5.0 kg in terms of Na2O or a potassium salts in the amount of 0.25-5.0 kg in terms of K2O or a mixture thereof in the amount of 0.25-5 kg in terms of Na2O and K2O to 1 kg of REM (in terms of Ln2O3 present in raw phosphate material) is added. The yield of REM transfer into phosphogypsum is up to 98%. |
| 申请公布号 |
US2016032423(A1) |
申请公布日期 |
2016.02.04 |
| 申请号 |
US201314775241 |
申请日期 |
2013.11.08 |
| 申请人 |
OPENED JOINT STOCK COMPANY UNITED CHEMICAL COMPANY URALCHEM |
发明人 |
Genkin Mikhail Vladimirovich;Evtushenko Aleksey Vladimirovich;Komkov Aleksey Aleksandrovich;Safiulina Alfiya Minerovna;Spiridonov Vasiliy Sergeevich;Shvetsov Sergey Vladimirovich |
| 分类号 |
C22B59/00;C22B3/08 |
主分类号 |
C22B59/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for concentrating rare-earth metals (REM) in phosphogypsum, the method comprising:
a process of decomposition of the REM containing raw phosphate material with sulphuric acid, a sodium salt in the amount of 0.25 kg to 5.0 kg in terms of Na2O or a potassium salts in the amount of 0.25 kg to 5.0 kg in terms of K2O or a mixture thereof in the amount of 0.25 kg to 5 kg in terms of Na2O and K2O to 1 kg of REM (in terms of Ln2O3 present in raw phosphate material) is added. |
| 地址 |
Moscow, RU |
