CN108085493B - A method of impurity in rare earth chloride liquid is removed using batch process - Google Patents
A method of impurity in rare earth chloride liquid is removed using batch process Download PDFInfo
- Publication number
- CN108085493B CN108085493B CN201711258488.8A CN201711258488A CN108085493B CN 108085493 B CN108085493 B CN 108085493B CN 201711258488 A CN201711258488 A CN 201711258488A CN 108085493 B CN108085493 B CN 108085493B
- Authority
- CN
- China
- Prior art keywords
- rare
- liquid
- extractant
- earth
- extraction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/26—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
- C22B3/40—Mixtures
- C22B3/409—Mixtures at least one compound being an organo-metallic compound
-
- 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)
- Geochemistry & Mineralogy (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Extraction Or Liquid Replacement (AREA)
Abstract
The present invention provides a kind of methods for removing impurity in rare earth chloride liquid using batch process, the following steps are included: S1, ion adsorption type rare earth ore are through P507- kerosene-sec-octyl alcohol-hydrochloric acid system extraction and separation, rare-earth liquid is obtained, rare-earth liquid is introduced into material fluid bath；S2, extractant are stored in flux bath after configuring, and before rare-earth liquid enters extraction tank, partial extraction agent and water are first added in extraction tank, under stirring, rare-earth liquid is introduced into extraction tank from material fluid bath, is added and finishes, remaining extractant is added, extraction reaction is carried out；After S3, step S2 are extracted, settle and separate is carried out, obtaining that treated, feed liquid introduces precipitation tank；The organic layer that S4, step S3 are isolated separates after carrying out activation act in extraction tank after acid solution is handled, obtains reusable extractant.Method provided by the invention can effectively reduce iron ion, aluminium ion and heavy metal ion impurities in rare-earth liquid feed liquid.
Description
Technical field
The invention belongs to rare earth preparation fields, are specifically related to a kind of using batch process removing rare earth chloride liquid
The method of middle impurity.
Background technique
Rare earth in ion adsorption type rare earth ore is mutually adsorbed on the aluminium silicate minerals particle table such as kaolinite mostly with ion
On face, in maceration ion type rareearth ore, the non-rare earth impurities such as a large amount of iron, aluminium enter in maceration liquid with rare earth, pass through in early days
After crossing oxalate precipitation method, bicarbonate plating precipitation method processing, the content of non-rare earth impurity is reduced in rare-earth liquid, but still is deposited
In non-rare earth impurities such as a certain amount of iron, aluminium and some heavy metal ion in rare earth ore concentrate.In the extraction separation process of rare earth
In, these feed liquids for containing non-rare earth impurity will cause extractant emulsification, three-phase object increases, and then influence the effect of extraction and separation
Fruit.Therefore, this part feed liquid need be drawn from Rare Earth Separation extraction tank in production, after non-rare earth impurity therein is removed
Return again to separating and extracting slot.Existing impurity removing equipment is single-stage extraction removal of impurities reaction kettle, will first be drawn from Rare Earth Separation extraction tank
Removal of impurities feed liquid is waitd upon out to be introduced into the abstraction impurity removal reaction kettle that there will be removal of impurities extractant, is discharged to water phase after stirring abstraction impurity removal
Liquid tank, then pump to head tank, and separating and extracting slot is introduced in the state of controlling flow: extraction ear has the removal of impurities of impurity again
Extractant adds water and carries out washing back extraction, will carry out again after water phase venting next time except miscellaneous operation.This equipment, although can
Meet the operation of separating and extracting slot, but have the disadvantage in that one, dedoping step as intermittent production, the equipment needed is more, step
It is long, overstock more process materials；Two, the personnel that abstraction impurity removal process needs operate, and impurity-eliminating effect is easy by artificial
Factor influences；Three, the feed liquid after removal of impurities controls flow and could introduce separating and extracting slot by head tank or pump, it is difficult to
Accomplish synchronous with separating and extracting slot flow.
Summary of the invention
The present invention provides a kind of method for removing impurity in rare earth chloride liquid using batch process is provided, three are utilized
Octyl uncle: diethyl caproic acid: aliphatic alpha-hydroxyl oxime: the extractant of tributyl phosphate composition can effectively reduce rare earth material
Iron ion, aluminium ion and heavy metal ion impurities in liquid material liquid.
The present invention is achieved by the following technical programs.
A method of impurity in rare earth chloride liquid is removed using batch process, comprising the following steps:
S1, ion adsorption type rare earth ore obtain the concentration of Cl- through P507- kerosene-sec-octyl alcohol-hydrochloric acid system extraction and separation
For the rare-earth liquid of 3-5mol/L, rare-earth liquid is introduced into material fluid bath；
S2, extractant are stored in flux bath after configuring, before rare-earth liquid enters extraction tank, first in extraction tank
Partial extraction agent is added and rare-earth liquid is introduced into extraction tank by water under stirring from material fluid bath, is added and finishes, then plus
Enter remaining extractant, carries out extraction reaction；
After S3, step S2 are extracted, settle and separate is carried out, obtaining that treated, feed liquid introduces precipitation tank, carries out down
The processing of one step；
The organic layer that S4, step S3 are isolated separates after carrying out activation act in extraction tank after acid solution is handled,
Obtain reusable extractant.
Further, the acid solution in the step S4 is any one of hydrochloric acid, sulfuric acid, phosphoric acid.
Further, the concentration of the acid solution in the step S4 is 3-8mol/L.
Further, extractant in the step S2, forms, including following component: three octyls according to percentage composition
Tertiary amine 30%, diethyl caproic acid 25%, aliphatic alpha-hydroxyl oxime 25%, tributyl phosphate 20%
Further, the extractant and rare-earth liquid inventory in the step S2 is to extract: rare earth according to weight ratio
Feed liquid=1:10-15.
Further, in the step S2, it is 200-300r/min, temperature in stirring rate that the condition for extracting reaction, which is,
It is to stir settle and separate after 20-30min at 30-40 DEG C.
Further, the condition of the settle and separate in the step S3 is to stand 5-8h at 25-30 DEG C.
Further, the condition of activation act is in the step S4, is 100-200r/min in stirring rate, temperature is
At 20-30 DEG C, 10-15min is stirred.
Further, treated in step S4 extractant, when being reused as extractant, it is desirable that treated
Fe in extractant3+Concentration≤6000PPM.
The beneficial effects of the present invention are:
1, the present invention can efficiently remove iron and aluminium impurity in rare-earth liquid feed liquid, Fe in feed liquid that treated3+Concentration <
80PPM, Al3+Concentration < 50PPM.
2, extractant of the invention reenters N grades after treated extractant in anti-wash tank after acid solution is handled, can
To be carried out continuously the extraction reaction in next period, the recycling and reusing of extractant is realized, is reduced costs, by repeatedly producing
The proof of test, as Fe in treated feed liquid3+Concentration < 6000PPM can continue the extraction production for putting into next period.
3, halogenation phenomenon will not occur in extraction process for the present invention simultaneously, and layered effect is more obvious, can also be effective
Removal rare-earth liquid in beavy metal impurity, in feed liquid that treated, the concentration summation < 80PPM of heavy metal ion, significantly
Reduce the risk of heavy-metal residual.
Detailed description of the invention
Fig. 1 is a kind of process that the method for impurity in rare earth chloride liquid is removed using batch process of the invention
Figure.
Specific embodiment
Be described further below technical solution of the present invention, but claimed range be not limited to it is described.
Embodiment 1
A method of impurity in rare earth chloride liquid is removed using batch process, comprising the following steps:
S1, ion adsorption type rare earth ore obtain the concentration of Cl- through P507- kerosene-sec-octyl alcohol-hydrochloric acid system extraction and separation
For the rare-earth liquid of 3mol/L, rare-earth liquid is introduced into material fluid bath；
S2, extractant are stored in flux bath after configuring, before rare-earth liquid enters extraction tank, first in extraction tank
Partial extraction agent is added and rare-earth liquid is introduced into extraction tank by water under stirring from material fluid bath, is added and finishes, then plus
Enter remaining extractant, carries out extraction reaction；
After S3, step S2 are extracted, settle and separate is carried out, obtaining that treated, feed liquid introduces precipitation tank, carries out down
The processing of one step；
The organic layer that S4, step S3 are isolated separates after carrying out activation act in extraction tank after acid solution is handled,
Obtain reusable extractant.
Wherein, the acid solution in the step S4 is sulfuric acid；The concentration of acid solution in the step S4 is 3mol/L；The step
Extractant in rapid S2, forms, including following component according to percentage composition: three octyl tertiary amines 30%, diethyl caproic acid 25%,
Aliphatic alpha-hydroxyl oxime 25%, tributyl phosphate 20%；Extractant and rare-earth liquid inventory in the step S2, according to weight
Than for, extraction: rare-earth liquid=1:10；In the step S2, it is 200r/min in stirring rate that the condition for extracting reaction, which is,
Temperature is to stir 20min at 30 DEG C；The condition of settle and separate in the step S3 is to stand 5h at 25 DEG C；The step
The condition of activation act is in S4, is 100r/min in stirring rate, temperature is to stir settle and separate after 10min at 20 DEG C；Institute
Extractant of stating in step S4 that treated, when being reused as extractant, it is desirable that Fe in treated extractant3+Concentration=
6000PPM。
Embodiment 2
A method of impurity in rare earth chloride liquid is removed using batch process, comprising the following steps:
S1, ion adsorption type rare earth ore obtain the concentration of Cl- through P507- kerosene-sec-octyl alcohol-hydrochloric acid system extraction and separation
For the rare-earth liquid of 4mol/L, rare-earth liquid is introduced into material fluid bath；
S2, extractant are stored in flux bath after configuring, before rare-earth liquid enters extraction tank, first in extraction tank
Partial extraction agent is added and rare-earth liquid is introduced into extraction tank by water under stirring from material fluid bath, is added and finishes, then plus
Enter remaining extractant, carries out extraction reaction；
After S3, step S2 are extracted, settle and separate is carried out, obtaining that treated, feed liquid introduces precipitation tank, carries out down
The processing of one step；
The organic layer that S4, step S3 are isolated separates after carrying out activation act in extraction tank after acid solution is handled,
Obtain reusable extractant.
Wherein, the acid solution in the step S4 is in hydrochloric acid；The concentration of acid solution in the step S4 is 5mol/L；Institute
Extractant in step S2 is stated, is formed according to percentage composition, including following component: three octyl tertiary amines 30%, diethyl caproic acid
25%, aliphatic alpha-hydroxyl oxime 25%, tributyl phosphate 20%；Extractant and rare-earth liquid inventory in the step S2, are pressed
It is to extract: rare-earth liquid=1:13 according to weight ratio；In the step S2, the condition for extracting reaction is to be in stirring rate
250r/min, temperature are to stir settle and separate after 25min at 35 DEG C；The condition of settle and separate in the step S3 is, 28
6h is stood at DEG C；The condition of activation act is in the step S4, is 150r/min in stirring rate, temperature is to stir at 25 DEG C
Mix settle and separate after 13min；Treated in step S4 extractant, when being reused as extractant, it is desirable that after processing
Extractant in Fe3+Concentration=6000PPM.
Embodiment 3
A method of impurity in rare earth chloride liquid is removed using batch process, comprising the following steps:
S1, ion adsorption type rare earth ore obtain the concentration of Cl- through P507- kerosene-sec-octyl alcohol-hydrochloric acid system extraction and separation
For the rare-earth liquid of 5mol/L, rare-earth liquid is introduced into material fluid bath；
S2, extractant are stored in flux bath after configuring, before rare-earth liquid enters extraction tank, first in extraction tank
Partial extraction agent is added and rare-earth liquid is introduced into extraction tank by water under stirring from material fluid bath, is added and finishes, then plus
Enter remaining extractant, carries out extraction reaction；
After S3, step S2 are extracted, settle and separate is carried out, obtaining that treated, feed liquid introduces precipitation tank, carries out down
The processing of one step；
The organic layer that S4, step S3 are isolated separates after carrying out activation act in extraction tank after acid solution is handled,
Obtain reusable extractant.
Wherein, the acid solution in the step S4 is phosphoric acid；The concentration of acid solution in the step S4 is 8mol/L；The step
Extractant in rapid S2, forms, including following component according to percentage composition: three octyl tertiary amines 30%, diethyl caproic acid 25%,
Aliphatic alpha-hydroxyl oxime 25%, tributyl phosphate 20%；Extractant and rare-earth liquid inventory in the step S2, according to weight
Than for, extraction: rare-earth liquid=1:15；In the step S2, it is 300r/min in stirring rate that the condition for extracting reaction, which is,
Temperature is to stir settle and separate after 30min at 40 DEG C；The condition of settle and separate in the step S3 is to stand at 30 DEG C
8h；The condition of activation act is in the step S4, is 200r/min in stirring rate, temperature is at 30 DEG C, after stirring 15min
Settle and separate；Treated in step S4 extractant, when being reused as extractant, it is desirable that in treated extractant
Fe3+Concentration < 6000PPM.
Reference examples 1
It is carried out referring to the condition of embodiment 2, extractant and water is wherein first added without in step S2, but directly by extractant
It is added in rare-earth liquid；
Reference examples 2
It is carried out referring to the condition of embodiment 1, wherein different condition is not contain diethyl caproic acid in extractant；
Reference examples 3
It is carried out referring to the condition of embodiment 1, wherein different condition is not contain aliphatic alpha-hydroxyl oxime in extractant；
Reference examples 4
It is carried out referring to the condition of embodiment 1, wherein different condition is not contain tributyl phosphate in extractant.
Reference examples 5
It is carried out referring to the condition of embodiment 1, wherein different condition is to contain Fe in extractant3+, Fe3+Concentration=
6500PPM。
By embodiment 1- embodiment 3 and the gained of reference examples 1- reference examples 5 treated rare-earth liquid, Fe is carried out3+、Al3+
And heavy metal ion total amount is detected, as a result as described below:
(1) according to the experimental result of embodiment 1- embodiment 3, the present invention, which provides impurity-removing method, can effectively reduce rare earth material
The content of iron, aluminium in liquid and heavy metal ion；
(2) it according to the experimental result of embodiment 2 and comparative example 1, finds during the experiment, in impurity-removing method of the invention
In, it is first added without extractant and water, but directly extractant is added in rare-earth liquid, it is possible to halogenation phenomenon occur, extract
Take result that expected requirement is not achieved.
(3) according to the experimental result of embodiment 2 and comparative example 2-4, in impurity-removing method of the invention, when diethyl is not present
When caproic acid, iron ion content is caused obviously to rise, in the presence of illustrating diethyl caproic acid, can be very good absorption and fall iron ion；When
There is no when aliphatic alpha-hydroxyl oxime, content of beary metal is caused obviously to rise, when illustrating aliphatic alpha-hydroxyl oxime in the presence of, can be fine
Absorption fall iron heavy metal ion；When tributyl phosphate is not present, causes aluminium composition obviously to rise, illustrate tricresyl phosphate fourth
In the presence of ester, can be very good absorption and fall aluminium ion, and when three exists simultaneously, can effectively reduce iron in rare-earth liquid,
The content of aluminium and heavy metal ion illustrates that this three plays synergistic effect in extractant.
(4) according to the experimental result of embodiment 2 and comparative example 5, in impurity-removing method of the invention, as Fe in extractant3+It is dense
It when degree=6500PPM, continues to use and rare-earth liquid is extracted, can not effectively effectively reduce in rare-earth liquid
The content of iron, aluminium and heavy metal ion.
Claims (5)
1. a kind of method for removing impurity in rare earth chloride liquid using batch process, it is characterised in that: the following steps are included:
Through P507- kerosene-sec-octyl alcohol-hydrochloric acid system extraction and separation, the concentration for obtaining Cl- is 3- for S1, ion adsorption type rare earth ore
The rare-earth liquid of 5mol/L, rare-earth liquid are introduced into material fluid bath；
S2, extractant are stored in flux bath after configuring, and before rare-earth liquid enters extraction tank, are first added in extraction tank
Rare-earth liquid is introduced into extraction tank by partial extraction agent and water under stirring from material fluid bath, is added and is finished, adds surplus
Under extractant, carry out extraction reaction；
After S3, step S2 are extracted, settle and separate is carried out, obtaining that treated, feed liquid introduces precipitation tank, carries out in next step
Processing；
The organic layer that S4, step S3 are isolated is separated after carrying out activation act in extraction tank, is obtained after acid solution is handled
Reusable extractant；
Acid solution in the step S4 is any one of hydrochloric acid, sulfuric acid, phosphoric acid；
The concentration of acid solution in the step S4 is 3-8mol/L；
Extractant in the step S2, forms, including following component according to percentage composition: three octyl tertiary amines 30%, diethyl
Base caproic acid 25%, aliphatic alpha-hydroxyl oxime 25%, tributyl phosphate 20%；
Extractant and rare-earth liquid inventory in the step S2 are to extract: rare-earth liquid=1:10-15 according to weight ratio.
2. the method according to claim 1 for removing impurity in rare earth chloride liquid using batch process, feature exist
In in the step S2, it is 200-300r/min in stirring rate, temperature is to stir at 30-40 DEG C that the condition for extracting reaction, which is,
Mix 20-30min.
3. the method according to claim 1 for removing impurity in rare earth chloride liquid using batch process, feature exist
In the condition of the settle and separate in the step S3 is to stand 5-8h at 25-30 DEG C.
4. the method according to claim 1 for removing impurity in rare earth chloride liquid using batch process, feature exist
In the condition of activation act is in the step S4, is 100-200r/min in stirring rate, temperature is stirring at 20-30 DEG C
Settle and separate after 10-15min.
5. the method according to claim 1 for removing impurity in rare earth chloride liquid using batch process, feature exist
In treated in step S4 extractant, when being reused as extractant, it is desirable that Fe in treated extractant3+It is dense
Degree≤6000PPm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711258488.8A CN108085493B (en) | 2017-11-29 | 2017-11-29 | A method of impurity in rare earth chloride liquid is removed using batch process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711258488.8A CN108085493B (en) | 2017-11-29 | 2017-11-29 | A method of impurity in rare earth chloride liquid is removed using batch process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108085493A CN108085493A (en) | 2018-05-29 |
| CN108085493B true CN108085493B (en) | 2019-10-25 |
Family
ID=62173652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711258488.8A Active CN108085493B (en) | 2017-11-29 | 2017-11-29 | A method of impurity in rare earth chloride liquid is removed using batch process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108085493B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063718A (en) * | 1992-01-14 | 1992-08-19 | 北京大学 | The method of separating beavy metal impurity system high-purity rare-earth |
| CN101979680A (en) * | 2010-11-17 | 2011-02-23 | 广东富远稀土新材料股份有限公司 | Method for removing aluminum from rare-earth feed liquid |
| CN101993026A (en) * | 2009-08-17 | 2011-03-30 | 有研稀土新材料股份有限公司 | Quantitive slurry conveying equipment and method for conveying slurry |
| CN107365909A (en) * | 2016-05-12 | 2017-11-21 | 中国科学院上海应用物理研究所 | A kind of extraction separating method |
-
2017
- 2017-11-29 CN CN201711258488.8A patent/CN108085493B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063718A (en) * | 1992-01-14 | 1992-08-19 | 北京大学 | The method of separating beavy metal impurity system high-purity rare-earth |
| CN101993026A (en) * | 2009-08-17 | 2011-03-30 | 有研稀土新材料股份有限公司 | Quantitive slurry conveying equipment and method for conveying slurry |
| CN101979680A (en) * | 2010-11-17 | 2011-02-23 | 广东富远稀土新材料股份有限公司 | Method for removing aluminum from rare-earth feed liquid |
| CN107365909A (en) * | 2016-05-12 | 2017-11-21 | 中国科学院上海应用物理研究所 | A kind of extraction separating method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108085493A (en) | 2018-05-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhang et al. | Rare earth extraction from wet process phosphoric acid by emulsion liquid membrane | |
| Dan et al. | Separation chemistry and clean technique of cerium (IV): A review | |
| US10246759B2 (en) | Method of recovering rare-earth elements | |
| EP2929924A1 (en) | Method and apparatus for extracting and removing rare earth metal ions from plating solution | |
| CN106904784A (en) | A kind of recycling treatment process of rare earth soda soap raffinate | |
| CN106630313A (en) | Reduction circulation process method for recycling zinc elements in iron-containing waste acid | |
| CN109897976B (en) | La-Nd light rare earth pre-separation three-outlet extraction separation process | |
| CN108085493B (en) | A method of impurity in rare earth chloride liquid is removed using batch process | |
| CN108048654B (en) | A method of continuously removing impurity in rare earth chloride liquid using extraction tank | |
| CN103421951A (en) | Methods of selectively seperating and recovering manganese from cobalt and nickel using screen effect of mixed extracting agent | |
| CN107298458A (en) | A kind of utilization acid solution is with extractant to separate the retracting device of neodymium iron boron waste material middle rare earth | |
| US5238489A (en) | Leaching/flotation scrap treatment method | |
| CN106834681A (en) | A kind of method of Fe impurity in use research of Amido Podands Extractant removal Pr | |
| CN110306059A (en) | A method of rare earth in recycling cerium dopping yttrium luetcium silicate waste material | |
| CN209872557U (en) | System for separating acid and salt in wastewater | |
| CN110306050B (en) | Method for extracting and separating medium-heavy rare earth | |
| CN114672650A (en) | Method for extracting scandium from titanium white waste acid by utilizing diphosphonic acid extracting agent | |
| CN105154673B (en) | A kind of method for stirring extraction and preparing high-purity cobalt liquor | |
| CN104002390B (en) | A kind of simple system and method reclaiming waste mortar for nonmagnetic substance cutting ON-LINE SEPARATION | |
| CN106892479A (en) | A kind of method that oxalic acid and hydrochloric acid are reclaimed in the waste water from rare earth oxalate precipitate | |
| CN114182109A (en) | Nickel-cobalt feed liquid extraction impurity removal process and device thereof | |
| CN108486371A (en) | A kind of method of marble useless slurry saponification P507-P204 synergistic systems | |
| CN105461002A (en) | Method for removing calcium and magnesium in rare-earth industrial wastewater | |
| CN109136554B (en) | Pre-extraction common grouping process for low-yttrium mixed rare earth and low-yttrium ion rare earth ores | |
| CN109293049A (en) | A method of oxalic acid and hydrochloric acid are recycled from oxalic acid precipitation RE waste water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 532200 Industrial Road East 8, Chongzuo City Industrial Zone, the Guangxi Zhuang Autonomous Region Patentee after: Guangxi Guosheng rare earth new material Co.,Ltd. Address before: 532200 Industrial Road East 8, Chongzuo City Industrial Zone, the Guangxi Zhuang Autonomous Region Patentee before: CHINALCO GUANGXI GUOSHENG RARE EARTH DEVELOPMENT CO.,LTD. |
|
| CP01 | Change in the name or title of a patent holder |