CN102936664B - Method for extracting rare earth elements - Google Patents
Method for extracting rare earth elements Download PDFInfo
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- CN102936664B CN102936664B CN201210524076.5A CN201210524076A CN102936664B CN 102936664 B CN102936664 B CN 102936664B CN 201210524076 A CN201210524076 A CN 201210524076A CN 102936664 B CN102936664 B CN 102936664B
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- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000000605 extraction Methods 0.000 claims abstract description 105
- 239000007788 liquid Substances 0.000 claims abstract description 71
- 238000003756 stirring Methods 0.000 claims abstract description 18
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 239000000725 suspension Substances 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 abstract description 9
- 239000012071 phase Substances 0.000 description 20
- 230000016507 interphase Effects 0.000 description 5
- 239000012074 organic phase Substances 0.000 description 4
- DGEZNRSVGBDHLK-UHFFFAOYSA-N [1,10]phenanthroline Chemical compound C1=CN=C2C3=NC=CC=C3C=CC2=C1 DGEZNRSVGBDHLK-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052747 lanthanoid Inorganic materials 0.000 description 3
- 150000002602 lanthanoids Chemical class 0.000 description 3
- 229910052746 lanthanum Inorganic materials 0.000 description 3
- -1 rare earth salts Chemical class 0.000 description 3
- 238000000638 solvent extraction Methods 0.000 description 3
- 229910052691 Erbium Inorganic materials 0.000 description 2
- 229910052693 Europium Inorganic materials 0.000 description 2
- 229910052689 Holmium Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229910052777 Praseodymium Inorganic materials 0.000 description 2
- 229910052769 Ytterbium Inorganic materials 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 238000010923 batch production Methods 0.000 description 2
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 2
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 2
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 2
- 229910052727 yttrium Inorganic materials 0.000 description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 2
- OAOABCKPVCUNKO-UHFFFAOYSA-N 8-methyl Nonanoic acid Chemical compound CC(C)CCCCCCC(O)=O OAOABCKPVCUNKO-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 241000040710 Chela Species 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052765 Lutetium Inorganic materials 0.000 description 1
- RUFCPDPNKYQJNR-UHFFFAOYSA-N N(=O)OC(C)CCCCCC.C(C)C(CP(O)(O)=O)CCCC Chemical compound N(=O)OC(C)CCCCCC.C(C)C(CP(O)(O)=O)CCCC RUFCPDPNKYQJNR-UHFFFAOYSA-N 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- YNPNZTXNASCQKK-UHFFFAOYSA-N Phenanthrene Natural products C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 1
- 229910052773 Promethium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- VYRDHRYMAZWQJH-UHFFFAOYSA-N [P].P Chemical compound [P].P VYRDHRYMAZWQJH-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 150000001257 actinium Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- IKNAJTLCCWPIQD-UHFFFAOYSA-K cerium(3+);lanthanum(3+);neodymium(3+);oxygen(2-);phosphate Chemical compound [O-2].[La+3].[Ce+3].[Nd+3].[O-]P([O-])([O-])=O IKNAJTLCCWPIQD-UHFFFAOYSA-K 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- SRUKOJDGOUUFRB-UHFFFAOYSA-N heptylazanium;chloride Chemical compound Cl.CCCCCCCN SRUKOJDGOUUFRB-UHFFFAOYSA-N 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- OHSVLFRHMCKCQY-UHFFFAOYSA-N lutetium atom Chemical compound [Lu] OHSVLFRHMCKCQY-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052590 monazite Inorganic materials 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 150000003009 phosphonic acids Chemical class 0.000 description 1
- UXBZSSBXGPYSIL-UHFFFAOYSA-N phosphoric acid;yttrium(3+) Chemical compound [Y+3].OP(O)(O)=O UXBZSSBXGPYSIL-UHFFFAOYSA-N 0.000 description 1
- VQMWBBYLQSCNPO-UHFFFAOYSA-N promethium atom Chemical compound [Pm] VQMWBBYLQSCNPO-UHFFFAOYSA-N 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 description 1
- FRNOGLGSGLTDKL-UHFFFAOYSA-N thulium atom Chemical compound [Tm] FRNOGLGSGLTDKL-UHFFFAOYSA-N 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 229910000164 yttrium(III) phosphate Inorganic materials 0.000 description 1
Images
Classifications
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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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- Extraction Or Liquid Replacement (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a method for extracting rare earth elements and a rare earth extraction system. The method comprises the following steps: inputting quantitative water solution or suspension, as heavy liquid, of rare earth elements into an extraction tank via a heavy liquid inlet at the top of the extraction tank; starting a stirring shaft; filling an extraction solvent as light liquid into the extraction tank uniformly from a liquid distributor at the bottom of the extraction tank, ensuring step-by-step mixing and mass transfer from bottom to top between the light liquid and the heavy liquid in the stirring process and enabling the light phase liquid completing mass transfer to overflow into a decanting tank from the top of the extraction tank; after the light phase liquid is decanted in the decanting tank, discharging the light components via a light liquid outlet at the top of the decanting tank; judging whether extraction is completed by detecting the concentrations of the needed rare earth elements in the light component solution discharged from the decanting tank; after extraction is completed, stopping input of the light liquid and starting an emptying valve below the decanting tank to empty the decanting tank; and discharging the heavy liquid in the extraction tank via a heavy liquid outlet at the bottom of the extraction tank.
Description
The application divides an application, the application number of original application: 201110222358.5, and invention and created name: the method for extracting rare-earth element and extracting system, the applying date: 2011-8-4.
Technical field
The present invention relates to a kind of method and rare earth extraction system of extracting rare-earth element.
Background technology
Rare earth is exactly lanthanide series in the periodic table of chemical element--lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu), and with group of the lanthanides closely-related two elements of 15 elements--scandium (Sc) and yttrium (Y) totally 17 kinds of elements, be called rare earth element (Rare Earth), be called for short rare earth (RE or R).
In the smelting of rare earth and the process of the main primary product of rare earth, used a large amount of chemical reagent, cause China to produce every year nearly more than 200 ten thousand tons of RE waste water.How by extraction, to reclaim these rare earth elements, be the technical problem that field will solve.
Solvent extraction is suitable for batch production from lanthanum to erbium and the higher rare earth element of abundance such as yttrium.
Solvent extraction and separation method refers in the aqueous solution of separated material, add organic solvent a kind of and that water is not miscible, by means of the effect of extractant, make one or more components enter organic phase, other components are still stayed in water, thereby reach separated object.
Existing a kind of rare earth element extracting system, suspends quantitative rare earth element to pour in extractor often, then from tank deck, sends into quantitative solvent, then heats and opens stirring, and feed liquid is fully mixed with solvent.Then stop stirring, after static a period of time, the weight component in tank is respectively in levels, now as long as the leakage fluid dram of opening on tank wall is discharged light component.The weak point of the prior art is: laminated fluid level can only pass through top visor artificial observation, is difficult to determine the tram of layering.The drain pipe position of light liquid is difficult adjusts, or light liquid puts endless, or also emits together with heavy-fluid, and thoroughly or gently loss is large mutually to cause extract and separate.
The device of another kind of common solvent extraction rare earth element is multi-stage countercurrent mixing-clarifier, and in this equipment, two kinds of liquid are relatively mobile, both entirely different objectionable interminglings, and a kind of is the aqueous solution of rare earth salts, another kind is organic phase or the solvent phase of " oil ".During both counter current contacting, due to the difference of each rare earth element to TBP, D2EHPA equal solvent or the existence of chela platform agent affinity in organic phase, part rare earth enters organic phase, another part is stayed in solution, multiple-contact and the reallocation of process two-phase in mixer-settler extractors at different levels like this, repeat artificially, superpose, expand this difference, can reach the multielement grouping object separated with single-element.Ion-exchange ratio with batch-type, extraction can be processed highly concentrated solution continuously, cost is low, is applicable to batch production, and this method has developed into the effective ways of most rare earth elements (at least 11 kinds) in commercial scale separation and purification bastnaesite, monazite and xenotime.The weak point of the prior art is: space hold is large, initial investment cost is higher (for to make the purity of each single rare earth product reach 99.99%, often using 1000 grades of above mixer-settler extractor devices), extraction yield is lower.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of method of simple in structure, extraction yield is higher, with low cost and space hold is less extracting rare-earth element.
In order to solve the problems of the technologies described above, the extracting system adopting in the method for extracting rare-earth element provided by the invention comprises: extraction is carried tank; The top that described extraction is carried tank is provided with heavy liquid inlet and light phase export, and the bottom that extraction is carried tank is provided with light liquid entrance and heavy out; The top that described extraction is carried tank is provided with a settling tank, and extraction carries the light phase export of tank and the bottom of this settling tank is connected, and the top of this settling tank is provided with light liquid outlet.In tank, be provided with multistage rotating ring and stationary ring, artificially a large extraction carried to tank and be separated into a plurality of little extractions and carry tank, greatly increased the area of interphase mass transfer, reduced mass transfer volume, saved the installing space of equipment.
During use, the heavy phase that described extraction is carried in tank is fixed, and the light liquid entrance of gently carrying pot bottom from extracting enters continuously and is spilled over to settling tank from described light phase export.
Particularly, the central axis that described extraction is carried tank is provided with shaft, the bottom of this shaft is provided with blade, and in described extraction, putting forward axial distribution in tank and on described shaft has a plurality of stirring rings, described extraction carry the inwall of tank and are staggered and are distributed with a plurality of stationary rings with each stirring ring.Described extraction is carried tank for adopting the jacket type tank body of vapours or hot water heating, insulation, can put to regulate according to the optimum temperature of different interphase mass transfers, thereby makes mass transfer velocity reach the fastest.Extraction temperature should be 20-30 ℃ more suitable.
The method of described extracting rare-earth element comprises: the heavy liquid inlet that the aqueous solution of the quantitative rare earth element as heavy-fluid or suspension are carried to the top of tank by extraction is inputted this extraction and carried in tank; Start shaft; Meanwhile, extraction is proposed to tank heating, the feed liquid that allows extraction carry in tank remains on preset temperature.The liquid distributor that extractant as light liquid is carried to pot bottom from extraction enters equably extraction and carries tank, in whipping process, between light, heavy-fluid, realizes mixing step by step, mass transfer from bottom to top, and the light phase liquid that completes mass transfer is proposed tank top overflow from extraction and entered settling tank; After light phase liquid is clarified in settling tank, light component is discharged by the light liquid mouth at settling tank top; By detecting the concentration of the required rare earth element the light component solution of discharging from settling tank, judgement is extracted or whether extraction completes; After extracting or having extracted, stop the input of light liquid, open the atmospheric valve of settling tank below, emptying settling tank; Extraction is carried to the heavy liquid exit that heavy-fluid in tank carries pot bottom through extraction emits.
Further, the bottom interior wall that described extraction is carried tank is provided with the first distributor being connected with described light liquid entrance, so that this solvent evenly enters in tank.
Further, the top inner wall that described extraction is carried tank is provided with the second distributor being connected with described heavy liquid inlet, so that this feed liquid evenly enters in tank.
Further, each stirs ring and is evenly distributed on described shaft, and each stationary ring is evenly distributed on the inwall that described extraction is carried tank.Due to the distribution that is staggered of adjacent described stirring ring and stationary ring, make to realize between light liquid and heavy-fluid mix step by step from bottom to top, mass transfer, until light phase feed liquid enters settling tank from tank top overflow while completing mass transfer.
Further, the width sum of the external diameter of described stirring ring and described stationary ring is less than the radius that described extraction is carried tank, to form the rising passway of a solvent, makes solvent and feed liquid fully mix to realize extraction step by step or extraction from bottom to top.
Technique scheme of the present invention has the following advantages compared to existing technology: extracting system of the present invention has been broken traditional technique, extraction section is shortened, make a similar extractor being formed by a plurality of traditional agitator tanks, heavy phase is fixed in tank, can by detect settling tank output light mutually in the concentration of required Rare Earth Elements Determination, adjust at any time consumption and the working time of light liquid, thereby improved operating efficiency, saved the consumption of light liquid, also meet the requirement of actual production.(2) when the present invention works, by detecting the content of the Rare Earth Elements Determination in light phase fluid, judge whether feed liquid extracts complete, extraction yield can reach 100%.(3) shaft in the present invention adopts frequency control, by adjusting, stirs shear rate, can accelerate interphase mass transfer speed, guarantees not emulsification simultaneously.A plurality of stirring rings, stationary ring that extraction is carried in tank are divided into a plurality of little extraction cells by tank body, thereby interphase mass transfer area is strengthened, and are beneficial to quickening mass transfer, and further make mass transfer fully, thoroughly.(4) the present invention adopts the working method that heavy phase is fixed, gently inputted and overflow from tank body top continuously from tank base, can make interphase mass transfer fully, thoroughly, has guaranteed high extraction yield, and simple to operate, has at utmost reduced the consumption of extractant.(5) extractant of the present invention can adopt acid phosphorus (phosphine) acid esters or nitrogenous chelating extractant; The form of oxine (HQ) extraction lanthanum is LaQ3; And the form of extraction praseodymium, europium, holmium, ytterbium is LnQ32HQ, in high HQ concentration, be LnQ33HQ; When adding 1,10-phenanthroline (phen) or n-heptyl ammonium chloride (R4NCl), extraction form is LnQ32HQphen or R4NLnQ4HQ, and can improve the separating property of rare earth; In KelexX100(7-Cl-2-thiazolinyl-3,3,6,6-tetramethyl hexyl)-oxine or 1,10-phenanthroline, have facilitation to extraction with separated.In addition to 1-phenyl-3-methyl-4-Benzoylpyrazols ketone [PMBP], be one of good extractant of group of the lanthanides, actinium series and alkaline-earth metal.
Accompanying drawing explanation
For content of the present invention is more likely to be clearly understood, below the specific embodiment by reference to the accompanying drawings of basis, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of rare earth extraction system of the present invention.
The specific embodiment
Embodiment 1
See Fig. 1, the rare earth extraction system of the present embodiment comprises: extraction carries tank 1, be located at this extraction carry on the central axis of tank 1 and bottom is provided with the shaft 2 of blade 4, described extraction is carried tank 1 in and on described shaft 2 axial distribution a plurality of stirring rings 3, be located at described extraction and carry the inwall of tank 1 and stir be staggered a plurality of stationary rings 5 of distribution of ring 3 with each; The top that described extraction is carried tank 1 is provided with for inputting the heavy liquid inlet of heavy-fluid and for exporting the light phase export of light phase feed liquid, and the bottom that extraction is carried tank 1 is provided with for inputting the light liquid entrance of light liquid and for exporting the heavy out of heavy phase; The top that described extraction is carried tank 1 is provided with a settling tank 8, and the light phase export that extraction is carried tank 1 is connected with the bottom of this settling tank 8, and the top of this settling tank 8 is provided with light liquid outlet.During use, the heavy phase that described extraction is carried in tank 1 is fixed, and the light liquid entrance of gently carrying tank 1 from extracting enters continuously and is spilled over to settling tank 8 from described light phase export.
Described extraction is carried tank 1 for adopting the jacket type tank body of vapours or hot water heating, insulation.
The bottom interior wall that described extraction is carried tank 1 is provided with the first distributor being connected with described light liquid entrance, and this solvent distributor is ring pipe, is distributed with hydrojet perforate upward on body.
The top inner wall that described extraction is carried tank 1 is provided with the second distributor being connected with described heavy liquid inlet, and this liquid distributor is ring pipe, is distributed with hydrojet perforate down on body.
Each stirs ring 3 and is evenly distributed on described shaft 2, and each stationary ring 5 is evenly distributed on the inwall that described extraction is carried tank 1.The width sum of the external diameter of described stirring ring 3 and described stationary ring 5 is less than the radius that described extraction is carried tank 1.TIC in Fig. 1 is temperature indication control device, for controlling the flow of vapours, controls described extraction and carries the solution temperature in tank 1.
The method of above-mentioned rare earth extraction system extracting rare-earth element comprises:
The heavy liquid inlet that the aqueous solution of the quantitative rare earth element as heavy-fluid or suspension are carried to the top of tank 1 by extraction is inputted this extraction and is carried in tank 1 (while specifically implementing, can carry by this extraction the glass visor observation liquid level at tank (1) top, when liquid level arrives preset height, stop feed liquid input; );
The liquid distributor of carrying tank 1 bottom using the extractant as light liquid from extraction enters equably extraction and carries tank 1, in whipping process, gently, realize mixing step by step, mass transfer from bottom to top between heavy-fluid, the light phase liquid that completes mass transfer is proposed tank 1 top overflow from extraction and is entered settling tank 8;
Light phase liquid is after the interior clarification of settling tank 8, and light component is discharged by the light liquid mouth at settling tank 8 tops;
By detecting the concentration of the required rare earth element the light component solution of discharging from settling tank 8, judgement is extracted or whether extraction completes;
After extracting or having extracted, stop the input of light liquid, open the atmospheric valve 7 of settling tank 8 belows, emptying settling tank 8;
Extraction is carried to the heavy liquid exit that heavy-fluid in tank 1 carries tank 1 bottom through extraction emits.
Adopt extractant to mainly include a kind of in machine phosphoric acid, amine and carboxylic acids, as two-(2 one ethylhexyl) phosphonic acids (P204), 2-ethylhexyl phosphonic acid mono 2-Octyl Nitrite (P-507), versatic acid, quaternary amine, aphthenic acids etc.
Obviously, above-described embodiment is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.And these belong to apparent variation that spirit of the present invention extended out or change still among protection scope of the present invention.
Claims (1)
1. a method for extracting rare-earth element, is characterized in that:
The rare earth extraction system adopting comprises: extraction is carried tank (1), and the top that this extraction is carried tank (1) is provided with heavy liquid inlet and light phase export, and the bottom that extraction is carried tank (1) is provided with light liquid entrance and heavy out; The top that extraction is carried tank (1) is provided with a settling tank (8), and the light phase export that extraction is carried tank (1) is connected with the bottom of this settling tank (8), and the top of this settling tank (8) is provided with light liquid outlet; The central axis that described extraction is carried tank (1) is provided with shaft (2), the bottom of this shaft (2) is provided with blade (4), in described extraction is carried tank (1) and in the upper axial distribution of described shaft (2), have a plurality of stirring rings (3), described extraction is carried on the inwall of tank (1) and is stirred ring (3) and is staggered and is distributed with a plurality of stationary rings (5) with each;
The method of described extracting rare-earth element comprises:
The heavy liquid inlet that the aqueous solution of the quantitative rare earth element as heavy-fluid or suspension are carried to the top of tank (1) by extraction is inputted this extraction and is carried in tank (1);
Start shaft (2);
The liquid distributor of carrying tank (1) bottom using the extractant as light liquid from extraction enters equably extraction and carries tank (1), in whipping process, gently, realize mixing step by step, mass transfer from bottom to top between heavy-fluid, the light phase liquid that completes mass transfer is proposed tank (1) top overflow from extraction and is entered settling tank (8);
After light phase liquid is clarified in settling tank (8), light component is discharged by the light liquid mouth at settling tank (8) top;
By detecting the concentration of the required rare earth element the light component solution of discharging from settling tank (8), judgement is extracted or whether extraction completes;
After extracting or having extracted, stop the input of light liquid, open the atmospheric valve (7) of settling tank (8) below, emptying settling tank (8);
Extraction is carried to the heavy liquid exit that the heavy-fluid in tank (1) carries tank (1) bottom through extraction emits;
Extraction is carried tank (1) for adopting the jacket type tank body of vapours or hot water heating, insulation;
In described startup shaft (2), extraction is proposed to tank (1) heating, the feed liquid that allows extraction carry in tank (1) remains on preset temperature;
Each stirs ring (3) and is evenly distributed on described shaft (2) above, and each stationary ring (5) is evenly distributed on the inwall that described extraction is carried tank (1);
The width sum of the external diameter of described stirring ring (3) and described stationary ring (5) is less than the radius that described extraction is carried tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210524076.5A CN102936664B (en) | 2011-08-04 | 2011-08-04 | Method for extracting rare earth elements |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210524076.5A CN102936664B (en) | 2011-08-04 | 2011-08-04 | Method for extracting rare earth elements |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102223585A Division CN102277493B (en) | 2011-08-04 | 2011-08-04 | Method for extracting rare earth elements and rare earth extraction system |
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| CN102936664A CN102936664A (en) | 2013-02-20 |
| CN102936664B true CN102936664B (en) | 2014-02-19 |
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| CN103468981B (en) * | 2013-09-06 | 2014-09-24 | 中铝稀土（常熟）有限公司 | Rare earth liquid metering and conveying device for rare earth extraction tank |
| CN108771886B (en) * | 2018-07-19 | 2024-03-29 | 凯莱英医药集团（天津）股份有限公司 | Device and method for continuously drying organic solution |
| CN109182792B (en) * | 2018-10-17 | 2020-11-17 | 信丰县包钢新利稀土有限责任公司 | Pulse sieve plate tower for rare earth extraction |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2095706U (en) * | 1990-09-25 | 1992-02-12 | 钟盛华 | Settle extractor |
| SU1628309A1 (en) * | 1989-07-19 | 1994-02-28 | Б.Н. Парфанович | Extractor |
| CN2507536Y (en) * | 2001-08-26 | 2002-08-28 | 龚贺 | Tank mixing and clarifying device for extraction or reaction |
| CN201664526U (en) * | 2009-11-16 | 2010-12-08 | 陆文光 | Centrifugal stirring type extracting tower |
-
2011
- 2011-08-04 CN CN201210524076.5A patent/CN102936664B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1628309A1 (en) * | 1989-07-19 | 1994-02-28 | Б.Н. Парфанович | Extractor |
| CN2095706U (en) * | 1990-09-25 | 1992-02-12 | 钟盛华 | Settle extractor |
| CN2507536Y (en) * | 2001-08-26 | 2002-08-28 | 龚贺 | Tank mixing and clarifying device for extraction or reaction |
| CN201664526U (en) * | 2009-11-16 | 2010-12-08 | 陆文光 | Centrifugal stirring type extracting tower |
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| CN102936664A (en) | 2013-02-20 |
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