CN109264763A - The devices and methods therefor of continuous production crystal carbonated rare earth - Google Patents
The devices and methods therefor of continuous production crystal carbonated rare earth Download PDFInfo
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- CN109264763A CN109264763A CN201811342451.8A CN201811342451A CN109264763A CN 109264763 A CN109264763 A CN 109264763A CN 201811342451 A CN201811342451 A CN 201811342451A CN 109264763 A CN109264763 A CN 109264763A
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- supernatant
- precipitation tank
- regulating valve
- electromagnetic flowmeter
- rare earth
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- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 47
- 239000013078 crystal Substances 0.000 title claims abstract description 45
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 39
- 238000010924 continuous production Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000006228 supernatant Substances 0.000 claims abstract description 70
- 238000003860 storage Methods 0.000 claims abstract description 11
- 238000001556 precipitation Methods 0.000 claims description 72
- 230000001105 regulatory effect Effects 0.000 claims description 57
- 239000007788 liquid Substances 0.000 claims description 52
- 239000002002 slurry Substances 0.000 claims description 19
- 230000001376 precipitating effect Effects 0.000 claims description 17
- 238000001914 filtration Methods 0.000 claims description 13
- 238000002425 crystallisation Methods 0.000 claims description 12
- 230000008025 crystallization Effects 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 239000003153 chemical reaction reagent Substances 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 10
- -1 rare earth salt Chemical class 0.000 claims description 8
- 238000000605 extraction Methods 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 6
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 42
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009388 chemical precipitation Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000012066 reaction slurry Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/20—Compounds containing only rare earth metals as the metal element
- C01F17/247—Carbonates
-
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of devices of continuous production crystal carbonated rare earth, comprising: flow control system, crystal seed return-flow system, settling system, dense system, supernatant storage tank.The invention also discloses a kind of methods of continuous production crystal carbonated rare earth.The present invention can be continuously available the crystal carbonated rare earth that quality is stable, is easy to filter and wash.
Description
Technical field
The invention belongs to a kind of rare-earth wet methods to smelt production field, and in particular to a kind of continuous production crystal carbonated rare earth
Devices and methods therefor.
Background technique
Chemical precipitation method is a kind of partial crystallization phenomenon, and the growth rate of crystallization is decided by precipitate in the surface and solution of the nuclei of crystallization
Simple precipitation reaction and crystal seed circular response can be used in the difference of agent concentration and its saturated concentration, chemical precipitation reactive mode.Crystal seed
Precipitation reaction is to add good precipitation seed into precipitation system in initial reaction stage, and to be formed, crystal grain is big, precipitating is fast, moisture content
The good precipitated product of low outlet effect.
Rare-earth trade production carbonated rare earth precipitating be exactly using chemical precipitation method, with earth solution and ammonium bicarbonate solution or
Sodium carbonate liquor etc. containing carbonate soluble salt solutions reaction, obtain carbonated rare earth precipitating, and by filtering, realize rare earth with
The separation of other non-rare earth impurities.It is easy to the carbonated rare earth filtered in order to obtain, it is anti-that present rare-earth trade is all made of seeded precipitation
It answers, but the unstable quality of carbonated rare earth, and carbonated rare earth is not easy filtering, impurity content height.
Summary of the invention
Technical problem solved by the invention is to provide a kind of devices and methods therefor of continuous production crystal carbonated rare earth, energy
Enough it is continuously available the crystal carbonated rare earth that quality is stable, is easy to filter and wash.
Technical solution is as follows:
A kind of device of continuous production crystal carbonated rare earth, comprising:
Flow control system, for conveying precipitant solution, earth solution to settling system, comprising: the first Electromagnetic Flow
Meter, the second electromagnetic flowmeter, the first regulating valve, the second regulating valve, precipitating reagent transfer pipeline, Tu Rongyeshusongguanlu；First electricity
Magnetic flowmeter, the first regulating valve are arranged on precipitating reagent transfer pipeline, and precipitating reagent transfer pipeline connects under first order precipitation tank
Portion；Second electromagnetic flowmeter, the second regulating valve are arranged on earth solution transfer pipeline, earth solution transfer pipeline connection first
The bottom of grade precipitation tank, earth solution enter first order precipitation tank after flowing through the second electromagnetic flowmeter, the second regulating valve；
Crystal seed return-flow system, for underflow liquid and supernatant to be sent back to settling system, comprising: third electromagnetic flowmeter,
Third regulating valve, return line, third electromagnetic flowmeter, third regulating valve are arranged on return line；Return line one end point
Not Lian Jie variable frequency pump, supernatant produce pump, the other end connects the first order precipitation tank of settling system；Underflow liquid and supernatant flow through
Enter first order precipitation tank after third electromagnetic flowmeter, third regulating valve；
Settling system, including multiple concatenated precipitation tanks, precipitation tank are provided with variable-frequency motor, are provided on the top of side wall
Overflow port, the overflow port of upper level precipitation tank pass through the lower part of piping connection next stage precipitation tank；
Dense system, for separating the rare earth salt particle in slurries, comprising: dense slot, variable frequency pump, dense slot variable-frequency electric
Machine；Dense slot variable-frequency motor is arranged on dense slot, and the overflow port of afterbody precipitation tank passes through under the dense slot of piping connection
Portion, for the clear liquid overflow port on dense slot top by piping connection supernatant storage tank, the underflow liquid outlet of lower part is provided with variable frequency pump,
Underflow liquid is sent into return line by piping connection return line, variable frequency pump by variable frequency pump；
Supernatant storage tank, for storing supernatant, the liquid outlet in lower part is provided with supernatant and produces pump, and supernatant produces
By piping connection return line, supernatant produces the supernatant that pumping goes out and enters return line pump.
Further, the quantity of precipitation tank is determined according to the series of Process configuration, and the series of precipitation tank is according to Crystallization
Time requirement determine that the Crystallization time series of long then precipitation tank is more, the series of Crystallization time short then precipitation tank
It is few.
Further, slurries a part of variable frequency pump extraction is by third electromagnetic flowmeter and third regulating valve, as crystal seed
It accurately feeds in first order precipitation tank, remaining underflow liquid realizes that solid-liquid is kept completely separate through filtering.
Further, precipitant solution passes through the first electromagnetic flowmeter, the first regulating valve accurate flow adjustment；Earth solution is logical
Cross the second electromagnetic flowmeter, the second regulating valve accurate flow adjustment；Underflow liquid and supernatant pass through third electromagnetic flowmeter, third
Regulating valve accurate flow adjustment.
A kind of method of continuous production crystal carbonated rare earth, comprising:
Precipitant solution enters first order precipitation tank, precipitant solution after flowing through the first electromagnetic flowmeter, the first regulating valve
Valve regulating flow is adjusted by the first electromagnetic flowmeter, first；After earth solution flows through the second electromagnetic flowmeter, the second regulating valve
Into first order precipitation tank, earth solution adjusts valve regulating flow by the second electromagnetic flowmeter, second；
Supernatant and underflow liquid enter first order precipitation tank, supernatant after flowing through third electromagnetic flowmeter, third regulating valve
Valve regulating flow is adjusted by third electromagnetic flowmeter, third with underflow liquid；
Precipitant solution, earth solution, supernatant and underflow liquid are reacted in precipitation tank, react the slurries of generation by frequency conversion
Motor stirs evenly, and slurries flow in next stage reactive tank from overflow port, and slurries enter dense slot after complete reaction；
The underflow liquid a part extracted out in dense slot is sent to third electromagnetic flowmeter and third tune as crystal seed by variable frequency pump
Valve is saved, remaining underflow liquid after filtering comes out rare-earth salts particle filtering therein；Supernatant in dense slot enters supernatant
Liquid storage tank produces the supernatant entrance that pumping goes out through supernatant and flows back into first order precipitation tank.
Preferably, the supernatant that supernatant produces that pumping goes out further recycles the carbonate particle wherein to suspend through filtering.
Preferably, keep the temperature of precipitation tank between 20-60 DEG C, the solution concentration of precipitating reagent is 0-4mol/L, rare earth
The concentration of solution is 0-300g/L；Crystal seed includes supernatant and underflow liquid, and solid-liquid volume ratio is 1:10-1:2.
Preferably, the extracted amount for the underflow liquid that variable frequency pump produces, supernatant produce the flow for the supernatant that pump produces and sink
Shallow lake agent solution, earth solution total inlet match.
The technology of the present invention effect includes:
In the present invention, the device production carbonated rare earth of continuous production crystal carbonated rare earth has the characteristics that efficient, continuous, reality
The Automatic Control of existing carbonated rare earth production, by equipment control sedimentation time, temperature and precipitation seed adding manner and
Additional amount is continuously available the crystal carbonated rare earth that quality is stable, is easy to filter and wash.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the device of continuous production crystal carbonated rare earth in the present invention；
Specific embodiment
Be described below and specific embodiments of the present invention be fully shown, with enable those skilled in the art to practice and
It reproduces.
As shown in Figure 1, being the structural schematic diagram of the device of continuous production crystal carbonated rare earth in the present invention.
The present invention by adjusting earth solution and precipitant solution addition speed and be continuously added to the amount of crystal seed, control is anti-
The speed of growth for answering each conversion zone rare earth ion concentration and precipitant concentration and precipitated crystal in system, was easy to
Filter, the low crystal carbonated rare earth of impurity content.
The device of continuous production crystal carbonated rare earth, comprising: flow control system 1, crystal seed return-flow system 2, settling system
3, dense system 4, supernatant storage tank 5.
Flow control system 1 is used to convey precipitant solution, earth solution to settling system 3 (first order precipitation tank 31),
Its structure includes: the first electromagnetic flowmeter 11, the second electromagnetic flowmeter 12, the first regulating valve 13, the second regulating valve 14, precipitating reagent
Transfer pipeline 15, native solution conveyor tube road 16.
First electromagnetic flowmeter 11, the first regulating valve 13 are arranged on precipitating reagent transfer pipeline 16, precipitating reagent transfer pipeline
The lower part of 15 connection first order precipitation tanks 31, precipitant solution enter after flowing through the first electromagnetic flowmeter 11, the first regulating valve 13
First order precipitation tank 31, precipitant solution pass through the first electromagnetic flowmeter 11,13 accurate flow adjustment of the first regulating valve.
Second electromagnetic flowmeter 12, the second regulating valve 14 are arranged on earth solution transfer pipeline 16, earth solution conveying
Pipeline 16 connects the bottom of first order precipitation tank 31, and it is laggard that earth solution flows through the second electromagnetic flowmeter 12, the second regulating valve 14
Enter first order precipitation tank 31, earth solution passes through the second electromagnetic flowmeter 12,14 accurate flow adjustment of the second regulating valve.
Crystal seed return-flow system 2 is used to underflow liquid and supernatant sending back to settling system 3 (first order precipitation tank 31).It is tied
Structure includes: third electromagnetic flowmeter 21, third regulating valve 22, return line 23, third electromagnetic flowmeter 21, third regulating valve 22
It is arranged on return line 23；23 one end of return line is separately connected variable frequency pump 42, supernatant produces pump 51, and other end connection is heavy
Shallow lake system 3 (first order precipitation tank 31)；Return line 23 connects the bottom of first order precipitation tank 31, and underflow liquid and supernatant flow through
Enter first order precipitation tank 31 after third electromagnetic flowmeter 21, third regulating valve 22；Underflow liquid and supernatant pass through third electromagnetism
Flowmeter 21,22 accurate flow adjustment of third regulating valve.
Settling system 3 includes multiple concatenated precipitation tanks 31, and precipitation tank 31 is provided with variable-frequency motor 32, on the top of side wall
It is provided with overflow port 33.The overflow port 33 of upper level precipitation tank 31 passes through the lower part of piping connection next stage precipitation tank 31.Pass through
Variable-frequency motor 32 controls the revolving speed stirred in precipitation tank 31, guarantees constantly feeding with feed liquid, reacts the slurries stirring of generation
Uniformly, slurries flow in next stage reactive tank 31 from overflow port 33.The quantity of precipitation tank 31 is according to the series of Process configuration come really
Fixed, for the series of precipitation tank 31 depending on the time requirement of Crystallization, the Crystallization time series of long then precipitation tank 31 is more,
The Crystallization time series of short then precipitation tank 31 is few.
Dense system 4 is used to separate the rare earth salt particle in slurries.Its structure includes: dense slot 41, variable frequency pump 42, dense
Slot variable-frequency motor 43；Dense slot variable-frequency motor 43 is arranged on dense slot 41, and the overflow port 33 of afterbody precipitation tank 31 passes through
The clear liquid overflow port of the lower part of the dense slot 41 of piping connection, dense 41 top of slot passes through piping connection supernatant storage tank 5, lower part
Underflow liquid outlet is provided with variable frequency pump 42, and underflow liquid is sent by variable frequency pump 42 by piping connection return line 23, variable frequency pump 42
Return line 23.After complete reaction, slurries enter in dense slot 41, according to the gravity properties for generating precipitating, adjust dense
Slot variable-frequency motor 43 reduces speed of agitator, guarantees that the rare earth salt particle (carbonated rare earth) generated is deposited in the lower half of dense slot 41
Part.Slurries a part that variable frequency pump 42 is extracted out is accurate as crystal seed by third electromagnetic flowmeter 22 and third regulating valve 21
It feeds in first order precipitation tank 31, remaining underflow liquid realizes that solid-liquid is kept completely separate through filtering.
For storing supernatant, the liquid outlet in lower part is provided with supernatant and produces pump 51 supernatant storage tank 5, and supernatant turns
Pump 51 passes through piping connection return line 23 out.The supernatant that supernatant produces 51 extraction of pump enters return line 23, further
Recycle the carbonate particle wherein to suspend.
The method of continuous production crystal carbonated rare earth, specifically includes the following steps:
Step 1: precipitant solution enters first order precipitation tank after flowing through the first electromagnetic flowmeter 11, the first regulating valve 13
31, precipitant solution passes through the first electromagnetic flowmeter 11,13 accurate flow adjustment of the first regulating valve；Earth solution flows through the second electricity
Enter first order precipitation tank 31 after magnetic flowmeter 12, the second regulating valve 14, earth solution passes through the second electromagnetic flowmeter 12, second
14 accurate flow adjustment of regulating valve；
Step 2: crystal seed (supernatant and underflow liquid) enters first after flowing through third electromagnetic flowmeter 22, third regulating valve 21
Grade precipitation tank 31, supernatant and underflow liquid pass through third electromagnetic flowmeter 22,21 accurate flow adjustment of third regulating valve；
Step 3: feed liquid (precipitant solution, earth solution, supernatant and underflow liquid) is reacted in precipitation tank 31, and reaction produces
Raw slurries are stirred evenly by variable-frequency motor 32, and slurries flow in next stage reactive tank 31 from overflow port 33, after complete reaction
Slurries enter dense slot 41；
Keep the temperature of precipitation tank 31 between 20-60 DEG C, no pressure requirement.The extraction for the underflow liquid that variable frequency pump 42 produces
The flow that amount, supernatant produce the supernatant that pump 51 produces matches with precipitant solution, total inlet of earth solution.Precipitating
The solution concentration of agent is 0-4mol/L, and the concentration of earth solution is 0-300g/L, and the solid-liquid volume ratio of crystal seed is 1:10-1:2.
Step 4: the underflow liquid a part extracted out in dense slot 41 is sent to third Electromagnetic Flow as crystal seed by variable frequency pump 42
Meter 22 and third regulating valve 21, remaining underflow liquid after filtering come out rare-earth salts particle filtering therein；In dense slot 41
Supernatant enter supernatant storage tank 5, through supernatant produce pump 51 extraction supernatant enter return line 23.
The supernatant that supernatant produces 51 extraction of pump may also pass through filter, further recycle the carbonate wherein to suspend
Grain.
It should be understood that the foregoing is merely a specific embodiment of the invention, but protection scope of the present invention is not
It is confined to this, anyone skilled in the art in the technical scope disclosed by the present invention, can readily occur in variation
Or replacement, it should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the claim
Protection scope subject to.
Claims (8)
1. a kind of device of continuous production crystal carbonated rare earth characterized by comprising
Flow control system, for conveying precipitant solution, earth solution to settling system, comprising: the first electromagnetic flowmeter,
Two electromagnetic flowmeters, the first regulating valve, the second regulating valve, precipitating reagent transfer pipeline, Tu Rongyeshusongguanlu；First Electromagnetic Flow
Meter, the first regulating valve are arranged on precipitating reagent transfer pipeline, and precipitating reagent transfer pipeline connects the lower part of first order precipitation tank；Second
Electromagnetic flowmeter, the second regulating valve are arranged on earth solution transfer pipeline, and earth solution transfer pipeline connects first order precipitating
The bottom of slot, earth solution enter first order precipitation tank after flowing through the second electromagnetic flowmeter, the second regulating valve；
Crystal seed return-flow system, for underflow liquid and supernatant to be sent back to settling system, comprising: third electromagnetic flowmeter, third
Regulating valve, return line, third electromagnetic flowmeter, third regulating valve are arranged on return line；Return line one end connects respectively
Connect variable frequency pump, supernatant produces pump, the first order precipitation tank of other end connection settling system；Underflow liquid and supernatant flow through third
Enter first order precipitation tank after electromagnetic flowmeter, third regulating valve；
Settling system, including multiple concatenated precipitation tanks, precipitation tank are provided with variable-frequency motor, and the top of side wall is provided with overflow
Mouthful, the overflow port of upper level precipitation tank passes through the lower part of piping connection next stage precipitation tank；
Dense system, for separating the rare earth salt particle in slurries, comprising: dense slot, variable frequency pump, dense slot variable-frequency motor；It is dense
Close slot variable-frequency motor is arranged on dense slot, and the overflow port of afterbody precipitation tank passes through the lower part of the dense slot of piping connection, dense
The clear liquid overflow port on close slot top is provided with variable frequency pump, frequency conversion by piping connection supernatant storage tank, the underflow liquid outlet of lower part
Underflow liquid is sent into return line by piping connection return line, variable frequency pump by pump；
Supernatant storage tank, for storing supernatant, the liquid outlet in lower part is provided with supernatant and produces pump, and it is logical that supernatant produces pump
Piping connection return line is crossed, supernatant produces the supernatant that pumping goes out and enters return line.
2. the device of continuous production crystal carbonated rare earth as described in claim 1, which is characterized in that the quantity of precipitation tank is according to work
The series of skill configuration determines that the series of precipitation tank determines according to the time requirement of Crystallization, and the Crystallization time is long then
The series of precipitation tank is more, and the Crystallization time series of short then precipitation tank is few.
3. the device of continuous production crystal carbonated rare earth as described in claim 1, which is characterized in that the slurries one of variable frequency pump extraction
Part is accurately fed in first order precipitation tank, remaining is dense by third electromagnetic flowmeter and third regulating valve as crystal seed
Slurries realize that solid-liquid is kept completely separate through filtering.
4. the device of continuous production crystal carbonated rare earth as described in claim 1, which is characterized in that precipitant solution passes through first
Electromagnetic flowmeter, the first regulating valve accurate flow adjustment；Earth solution is accurately adjusted by the second electromagnetic flowmeter, the second regulating valve
Amount of restriction；Underflow liquid and supernatant pass through third electromagnetic flowmeter, third regulating valve accurate flow adjustment.
5. a kind of method of continuous production crystal carbonated rare earth, comprising:
Precipitant solution enters first order precipitation tank after flowing through the first electromagnetic flowmeter, the first regulating valve, and precipitant solution passes through
First electromagnetic flowmeter, first adjust valve regulating flow；Earth solution enters after flowing through the second electromagnetic flowmeter, the second regulating valve
First order precipitation tank, earth solution adjust valve regulating flow by the second electromagnetic flowmeter, second；
Supernatant and underflow liquid, which flow through, enters first order precipitation tank after third electromagnetic flowmeter, third regulating valve, supernatant and dense
Slurries adjust valve regulating flow by third electromagnetic flowmeter, third；
Precipitant solution, earth solution, supernatant and underflow liquid are reacted in precipitation tank, react the slurries of generation by variable-frequency motor
It stirs evenly, slurries flow in next stage reactive tank from overflow port, and slurries enter dense slot after complete reaction；
The underflow liquid a part extracted out in dense slot is sent to third electromagnetic flowmeter and third regulating valve as crystal seed by variable frequency pump,
Remaining underflow liquid after filtering comes out rare-earth salts particle filtering therein；Supernatant in dense slot enters supernatant storage
Slot produces the supernatant entrance that pumping goes out through supernatant and flows back into first order precipitation tank.
6. the method for continuous production crystal carbonated rare earth as claimed in claim 5, which is characterized in that supernatant produces what pumping went out
Supernatant further recycles the carbonate particle wherein to suspend through filtering.
7. the method for continuous production crystal carbonated rare earth as claimed in claim 5, which is characterized in that the temperature of precipitation tank is kept to exist
Between 20-60 DEG C, the solution concentration of precipitating reagent is 0-4mol/L, and the concentration of earth solution is 0-300g/L；Crystal seed includes supernatant
Liquid and underflow liquid, solid-liquid volume ratio are 1:10-1:2.
8. the method for continuous production crystal carbonated rare earth as claimed in claim 5, which is characterized in that the underflow liquid that variable frequency pump produces
Extracted amount, supernatant produces the flow of supernatant that pump produces and matches with precipitant solution, total inlet of earth solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811342451.8A CN109264763A (en) | 2018-11-13 | 2018-11-13 | The devices and methods therefor of continuous production crystal carbonated rare earth |
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| CN201811342451.8A CN109264763A (en) | 2018-11-13 | 2018-11-13 | The devices and methods therefor of continuous production crystal carbonated rare earth |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101306828A (en) * | 2007-05-17 | 2008-11-19 | 北京有色金属研究总院 | Device and process for preparing rare-earth compound uniform micro powder |
| JP2011072998A (en) * | 2010-11-24 | 2011-04-14 | Mitsubishi Gas Chemical Co Inc | Crystallization method and apparatus |
| CN106947861A (en) * | 2017-05-18 | 2017-07-14 | 赣州晨光稀土新材料股份有限公司 | A kind of continuous device for making of rare earth compound precipitation |
| CN107188215A (en) * | 2017-05-24 | 2017-09-22 | 中国北方稀土（集团）高科技股份有限公司 | The method that reaction end is automatically adjusted in carbonated rare earth continuous precipitation production process |
| CN209291982U (en) * | 2018-11-13 | 2019-08-23 | 中国北方稀土（集团）高科技股份有限公司 | The device of continuous production crystal carbonated rare earth |
-
2018
- 2018-11-13 CN CN201811342451.8A patent/CN109264763A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101306828A (en) * | 2007-05-17 | 2008-11-19 | 北京有色金属研究总院 | Device and process for preparing rare-earth compound uniform micro powder |
| JP2011072998A (en) * | 2010-11-24 | 2011-04-14 | Mitsubishi Gas Chemical Co Inc | Crystallization method and apparatus |
| CN106947861A (en) * | 2017-05-18 | 2017-07-14 | 赣州晨光稀土新材料股份有限公司 | A kind of continuous device for making of rare earth compound precipitation |
| CN107188215A (en) * | 2017-05-24 | 2017-09-22 | 中国北方稀土（集团）高科技股份有限公司 | The method that reaction end is automatically adjusted in carbonated rare earth continuous precipitation production process |
| CN209291982U (en) * | 2018-11-13 | 2019-08-23 | 中国北方稀土（集团）高科技股份有限公司 | The device of continuous production crystal carbonated rare earth |
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Application publication date: 20190125 |