CN1055203A - A kind of novel process of extracting rare earth - Google Patents
A kind of novel process of extracting rare earth Download PDFInfo
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- CN1055203A CN1055203A CN90105065A CN90105065A CN1055203A CN 1055203 A CN1055203 A CN 1055203A CN 90105065 A CN90105065 A CN 90105065A CN 90105065 A CN90105065 A CN 90105065A CN 1055203 A CN1055203 A CN 1055203A
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- Prior art keywords
- rare earth
- adsorbent
- mixed adsorbent
- leacheate
- novel process
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- 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
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Abstract
A kind of novel process of extracting rare earth from ion type rareearth ore, principal character of the present invention are to adopt NaCl leach liquor or the (NH of mixed adsorbent from ion adsorption type rare earth ore
4)
2SO
4In the leach liquor, rare earth is extracted in absorption and desorb since technology of the present invention, equipment simply, saved traditional technology medium-height grass hydrochlorate calcination operation, sorbent material and leacheate all can use repeatedly, so cost only accounts for oxalate precipitation method 12%.
Description
The present invention system belongs to rare earth element and extracts the field, and a kind of novel process of extracting rare earth with mixed adsorbent from ion adsorption type rare earth ore promptly is provided.
China is the country of rich rare earth, and the rare-earth mineral reserve accounts for 80% of whole world rare-earth mineral reserve, and particularly China south has abundant ion adsorption type rare earth ore.In the last few years, rare earth element application in a lot of fields extraction more and more extensive, rare earth then directly had influence on applying of it.At present, people generally adopt oxalic acid coprecipitation to extract rare earth.The advantage of this processing method is to use low price, and the competent NaCl that originates makes to soak ore deposit agent elution rare earth; Use the oxalic acid that not only can fold rare earth but also can separate the impurity of association to make precipitation agent.But insufficient is that sodium ion co-precipitation in large quantities gets off, and causes a calcination product purity to be lower than 70% owing to adopt the salt solution of higher concentration, so have to wash repeatedly, calcination can obtain the purity high product.So not only make operation sequence various, and caused salt, the mass consumption of oxalic acid, the energy.Moreover, because in, the solubleness of heavy rare earths is big, is difficult for precipitation fully, causes the extraction yield of rare earth lower.
The present invention provides the novel process that a kind of operation is simple, with low cost, easy to operate, the rare earth extraction yield is high in order to address the above problem.
Principal character of the present invention is to adopt NaCl leach liquor or the (NH of mixed adsorbent from ion adsorption type rare earth ore
4)
2SO
4In the leach liquor, rare earth is extracted in absorption and desorb.Extraction process flow process provided by the present invention is:
Rare earth leaches fluid injection (containing 5-10% NaCl)
↓
Add mixed adsorbent
↓
Stir, left standstill about 20 minutes
↓
Filter
↓
The drip washing mixed adsorbent
↓
Collect leacheate (recycling)
↓
Obtain the rare earth chloride enriched product
The mixed adsorbent that is adopted in the above-mentioned technical process preferably adopt two carboxylic acids (R＜COOH) and activated carbon, sorbent material is reusable, it is stable that adsorptive power keeps.The acidity of leacheate is that subacidity is best, and during the rare earth that adsorbs on the desorb solid adsorbent, and the hydrochloric acid that preferably adopts different concns is as releasing agent, and the character of so promptly not destroying sorbent material again can be quantitatively or the rare earth element that is adsorbed of desorb fully.
Provide embodiment 1 provided by the invention below
The Rare Earth Y b that will contain 0.1 grams per liter is added in the NaCl solution of 5% concentration
↓
Adding loading capacity is the two carboxylic acids of mixed adsorbent and the activated carbon of 0.2 grams per liter
↓
Stir, left standstill 20 minutes
↓
Filter
↓
The drip washing mixed adsorbent
↓
Collect leacheate
↓
Obtain adsorption rate and be 95.3% Ytterbium trichloride enriched product.
Embodiment 2
It is in 6% the NaCl fluid injection that the rare-earth DY that will contain 0.25 grams per liter joins concentration
↓
Following operation is the same with embodiment 1
↓
Obtain adsorption rate and be 99.16% rare-earth oxidation dysprosium enriched product
Example 3
It is in 5% the NaCl fluid injection that the rare-earth Gd that will contain 0.4 grams per liter joins concentration
↓
Following operation is the same with embodiment 1
↓
Obtain adsorption rate and be 95.6% rare-earth chlorination gadolinium enriched product.
In sum, can find out that compared with the prior art extraction process provided by the present invention has following advantage:
1, can adsorb quantitatively NaCl fluid injection or the (NH that leaches from Rare Earth Mine4）
2SO
4Rare earth in the fluid injection, and can from adsorbent, desorb the rare earth that is adsorbed quantitatively, in absorption or desorb, heavy rare earth element, its recovery rate can reach more than the 90-95%.
2, mixed adsorbent can regenerate, Reusability, NaCl fluid injection or (NH after rare earth is adsorbed4）
2SO
4Fluid injection is capable of circulation be used to soaking the ore deposit.
3, the final products that extract through this technology are rare earth-iron-boron, can directly carry out the deep processing separation of rare earth elements, have saved oxalates calcination operation, have namely saved the required equipment of calcination and have saved again the energy.
4, technology, equipment are simple, easy to operate, and whole technical process is all at room temperature carried out.
The adsorbent source of 5, adopting is sufficient, low price, its renewable, Reusability; Sprinkling liquid also can be recycled in addition, so greatly reduce cost of the present invention, only accounts for 12% of the used cost of oxalate method.
Claims (3)
1, a kind of technology of extracting rare earth from ion adsorption type rare earth ore is characterized in that it is made up of following operation:
Rare earth infusion solution (containing 5-10%NaCl)
↓
Add mixed adsorbent
↓
Stir, left standstill about 20 minutes
↓
Filter
↓
The drip washing mixed adsorbent
↓
Collect leacheate (recycling)
↓
Obtain the rare earth chloride enriched product
2,, it is characterized in that described mixed adsorbent is by carboxylic acid (R＜COOH) form with activated carbon according to the described extraction process of claim 1.
3, according to the described extraction process of claim 1, it is characterized in that leacheate is subacidity, during the rare earth that adsorbs on the desorb solid adsorbent, the hydrochloric acid that preferably adopts different concns is as releasing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN90105065A CN1055203A (en) | 1990-03-26 | 1990-03-26 | A kind of novel process of extracting rare earth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN90105065A CN1055203A (en) | 1990-03-26 | 1990-03-26 | A kind of novel process of extracting rare earth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1055203A true CN1055203A (en) | 1991-10-09 |
Family
ID=4878900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN90105065A Pending CN1055203A (en) | 1990-03-26 | 1990-03-26 | A kind of novel process of extracting rare earth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1055203A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103255301A (en) * | 2013-05-23 | 2013-08-21 | 江西理工大学 | Leaching method of weathered crust illuviation type ion rare earth ore |
| CN103397183A (en) * | 2013-08-08 | 2013-11-20 | 韦祖森 | Extraction method for rare-earth oxide from ionic adsorption type rare earth ore |
| CN103695670A (en) * | 2013-11-21 | 2014-04-02 | 南昌大学 | Method for improving ionic rare earth extraction rate and mine tailing safety |
| CN109161703A (en) * | 2018-09-17 | 2019-01-08 | 石家庄凯念科技有限公司 | A kind of method of ion type rareearth mine mother liquor concentrations |
-
1990
- 1990-03-26 CN CN90105065A patent/CN1055203A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103255301A (en) * | 2013-05-23 | 2013-08-21 | 江西理工大学 | Leaching method of weathered crust illuviation type ion rare earth ore |
| CN103397183A (en) * | 2013-08-08 | 2013-11-20 | 韦祖森 | Extraction method for rare-earth oxide from ionic adsorption type rare earth ore |
| CN103695670A (en) * | 2013-11-21 | 2014-04-02 | 南昌大学 | Method for improving ionic rare earth extraction rate and mine tailing safety |
| CN109161703A (en) * | 2018-09-17 | 2019-01-08 | 石家庄凯念科技有限公司 | A kind of method of ion type rareearth mine mother liquor concentrations |
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