MY189476A - Method for recovering rare earths through fractional extraction - Google Patents
Method for recovering rare earths through fractional extractionInfo
- Publication number
- MY189476A MY189476A MYPI2015001702A MYPI2015001702A MY189476A MY 189476 A MY189476 A MY 189476A MY PI2015001702 A MYPI2015001702 A MY PI2015001702A MY PI2015001702 A MYPI2015001702 A MY PI2015001702A MY 189476 A MY189476 A MY 189476A
- Authority
- MY
- Malaysia
- Prior art keywords
- organic phase
- extraction
- rare earths
- primary
- value
- Prior art date
Links
- 238000000605 extraction Methods 0.000 title abstract 9
- 238000000034 method Methods 0.000 title abstract 5
- 239000012074 organic phase Substances 0.000 abstract 8
- 102000008130 Cyclic AMP-Dependent Protein Kinases Human genes 0.000 abstract 3
- 108010049894 Cyclic AMP-Dependent Protein Kinases Proteins 0.000 abstract 3
- 239000012527 feed solution Substances 0.000 abstract 3
- 229910052761 rare earth metal Inorganic materials 0.000 abstract 3
- 239000000243 solution Substances 0.000 abstract 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract 2
- 230000002378 acidificating effect Effects 0.000 abstract 2
- 239000008346 aqueous phase Substances 0.000 abstract 2
- 229910052698 phosphorus Inorganic materials 0.000 abstract 2
- 239000011574 phosphorus Substances 0.000 abstract 2
- -1 rare earth chloride Chemical class 0.000 abstract 2
- 150000002910 rare earth metals Chemical class 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B59/00—Obtaining rare earth metals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Extraction Or Liquid Replacement (AREA)
Abstract
The present application discloses a method for recovering rare earths through fractional extraction. The method includes the following steps: using a rare earth solution containing middle and heavy rare earths as a feed solution, and a pH value of the feed solution is 2.5~5.5; extracting the feed solution for a first extraction by a first organic phase, and the first organic phase contains an acidic phosphorus extractant with a Protein Kinase A (PKa) value of >4; controlling a balanced acidity of an extraction aqueous phase at 1<pH<3, then obtaining a primary loaded organic phase and a primary extraction raffinate containing light rare earths; extracting the primary extraction raffinate containing light rare earths for a second extraction by a second organic phase, and the second organic phase contains an acidic phosphorus extractant with a PKa value of <3.5; controlling a balanced acidity of an extraction aqueous phase at 0.5<pH<2.5, then obtaining a secondary loaded organic phase and a secondary extraction raffinate; stripping the primary loaded organic phase and the secondary loaded organic phase respectively to recover the rare earths, then obtain a middle and heavy rare earth chloride solution and a light rare earth chloride solution. The method is clean and efficient with short technological process, high recovery rate of rare earths, low cost and so on. (Figure 1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2014/096023 WO2016106732A1 (en) | 2014-12-31 | 2014-12-31 | Method for recovering rare earth by fractional extraction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MY189476A true MY189476A (en) | 2022-02-16 |
Family
ID=56284004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MYPI2015001702A MY189476A (en) | 2014-12-31 | 2014-12-31 | Method for recovering rare earths through fractional extraction |
Country Status (3)
| Country | Link |
|---|---|
| BR (1) | BR112017001370B1 (en) |
| MY (1) | MY189476A (en) |
| WO (1) | WO2016106732A1 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109824155B (en) * | 2019-03-04 | 2023-09-12 | 广东益诺欧环保股份有限公司 | System and method for recycling high-concentration COD (chemical oxygen demand) wastewater |
| CN110144456A (en) * | 2019-06-20 | 2019-08-20 | 许瑞高 | The technique that calcium chloride directly leaches ion type rareearth is produced with dissolving with hydrochloric acid calcium salt |
| CN112126802B (en) * | 2020-08-14 | 2022-06-14 | 南昌大学 | Rare earth alkaline precipitation, transformation, decomposition and separation method |
| CN112662873B (en) * | 2020-12-03 | 2022-11-29 | 郑州大学 | Floating extraction reagent for strengthening floating extraction separation of lanthanum and cerium and method for selectively separating lanthanum and cerium |
| CN114737056B (en) * | 2021-01-08 | 2023-11-03 | 厦门稀土材料研究所 | Organic extractant, and method and application thereof for recovering metal elements |
| CN113106271B (en) * | 2021-04-06 | 2022-01-14 | 中国科学院过程工程研究所 | Method for purifying rare earth element gadolinium with high purity by using carboxylic acid functionalized ionic liquid |
| CN115287469B (en) * | 2022-07-21 | 2024-03-29 | 湖北金泉新材料有限公司 | Method for selectively extracting lithium from clay-type lithium ore |
| CN115161499B (en) * | 2022-07-26 | 2023-12-19 | 江西理工大学 | Method for separating and recovering rare earth and iron by one-step extraction |
| CN115558808B (en) * | 2022-09-27 | 2023-11-28 | 吉安鑫泰科技有限公司 | Separation method of light rare earth element |
| CN115818693B (en) * | 2022-11-21 | 2024-02-13 | 江苏南方永磁科技有限公司 | Gadolinium oxide production process |
| CN116497242B (en) * | 2023-03-17 | 2025-10-03 | 核工业北京化工冶金研究院 | A method for recovering uranium and aluminum from ionic rare earth ore slag |
| CN117230311A (en) * | 2023-09-08 | 2023-12-15 | 四川省乐山锐丰冶金有限公司 | A method for recovering and producing rare earth oxide and ferrous chloride from NdFeB waste |
| CN117265299B (en) * | 2023-11-23 | 2024-02-06 | 中国科学院赣江创新研究院 | Enrichment and extraction method of rare earth in rare earth ore leaching solution |
| CN119082462A (en) * | 2024-09-06 | 2024-12-06 | 中稀江西稀土有限公司 | A method for recovering high-value elements from mine slag |
| CN119332118B (en) * | 2024-10-23 | 2025-11-21 | 江西理工大学 | Method for separating yttrium and neodymium in neodymium-doped yttrium aluminum garnet crystal waste by nonaqueous phase solvent extraction |
| CN119120953B (en) * | 2024-11-11 | 2025-02-25 | 中国科学院赣江创新研究院 | A pretreatment method for smelting and separation of ionic rare earth ore |
| CN119430258B (en) * | 2025-01-09 | 2025-04-08 | 淄博包钢灵芝稀土高科技股份有限公司 | Method for recycling calcium fluoride and rare earth by utilizing chemical separation wastewater of rare earth smelting |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100513600C (en) * | 2006-04-07 | 2009-07-15 | 北京有色金属研究总院 | Technique for extracting and separating rare earth elements from non-saponification system |
| CN101294244B (en) * | 2007-04-25 | 2010-09-01 | 北京有色金属研究总院 | Process method for extracting and separating tetravalent cerium, thorium, fluorine and cerium-less trivalent rare earth from sulfuric acid rare earth solution |
| CN101319276B (en) * | 2007-06-04 | 2013-06-19 | 北京有色金属研究总院 | Preextraction method for organic extraction agent, product and uses thereof |
| CN102443699A (en) * | 2011-12-09 | 2012-05-09 | 甘肃稀土新材料股份有限公司 | Method for separating single rare earth by combining non-saponification, transformation prepurification and linkage extraction |
-
2014
- 2014-12-31 MY MYPI2015001702A patent/MY189476A/en unknown
- 2014-12-31 WO PCT/CN2014/096023 patent/WO2016106732A1/en not_active Ceased
- 2014-12-31 BR BR112017001370-3A patent/BR112017001370B1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016106732A1 (en) | 2016-07-07 |
| BR112017001370B1 (en) | 2021-03-16 |
| BR112017001370A2 (en) | 2017-11-21 |
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