CN110293002A - Caesium, the precipitate flotation separation system of rubidium and its application in a kind of aqueous solution - Google Patents

Caesium, the precipitate flotation separation system of rubidium and its application in a kind of aqueous solution Download PDF

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Publication number
CN110293002A
CN110293002A CN201910583358.4A CN201910583358A CN110293002A CN 110293002 A CN110293002 A CN 110293002A CN 201910583358 A CN201910583358 A CN 201910583358A CN 110293002 A CN110293002 A CN 110293002A
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flotation separation
aqueous solution
rubidium
caesium
ion
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Inventor
叶秀深
刘海宁
房得珍
李明珍
张慧芳
王世栋
钱志强
吴志坚
葛飞
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Qinghai Institute of Salt Lakes Research of CAS
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Qinghai Institute of Salt Lakes Research of CAS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/02—Froth-flotation processes
    • 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
    • C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
    • C22B26/10—Obtaining alkali metals
    • 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
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/006—Wet processes
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/04—Treating liquids
    • G21F9/06—Processing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2203/00—Specified materials treated by the flotation agents; specified applications
    • B03D2203/008—Water purification, e.g. for process water recycling
    • 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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  • 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)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

The invention discloses caesium, the precipitate flotation separation system of rubidium and its applications in a kind of aqueous solution.The precipitate flotation separation system includes: precipitating reagent, is included at least Prussian blue；And collecting agent and foaming agent, include at least cationic surfactant.The invention also discloses the flotation separation methods of caesium, rubidium ion in a kind of aqueous solution, cesium ion and/or rubidium ion are precipitated comprising: which reaction in the aqueous solution containing cesium ion and/or rubidium ion is added in precipitating reagent, collecting agent and foaming agent, wherein the precipitating reagent includes at least Prussian blue, and the collecting agent and foaming agent include at least cationic surfactant；The precipitating solid content collecting reaction and obtaining is handled by FLOTATION SEPARATION.It is provided by the invention with the Prussian blue precipitate flotation system for precipitating reagent, have the characteristics that precipitate stable that is easy to operate, being formed, be easy to operate in large scale, suitable for solution in the removal of caesium, rubidium ion, especially radioactive liquid waste caesium, rubidium ion removal.

Description

Caesium, the precipitate flotation separation system of rubidium and its application in a kind of aqueous solution
Technical field
The present invention relates to a kind of precipitate flotation systems more particularly to a kind of in the Prussian blue aqueous solution for precipitating reagent Caesium, rubidium precipitate flotation separation system and radioactive liquid waste in caesium, rubidium minimizing technology, belong to element sepatation and environmental recovery bonds Learn technical field.
Background technique
Radioactive liquid waste is one of environmental protection waste water to be treated, and wherein effectively removing for radioactive substance is to be related to ring One of border and the major issue of health.Radioactive wastewater refers to nuclear power plant, nuclear fuel pre-treatment and spentnuclear fuel post-processing and puts The various waste water being discharged in injectivity isotope application process, the type and concentration of radionuclide contained by different waste water, acidity, its Its chemical constituent etc. is widely different.In nuclear power station waste water, main nucleic includes58Co、60Co、134Cs、137Cs、90Sr、3H etc.；Core In the waste water of fuel recycle leading portion, nucleic is in the majority with uranium, radium and its daughter, such as the exploitation and ore dressing of uranium ore generate uranium-bearing, radium Natural radionuclide Mine water flow or beneficiation wastewater (Wang Baozhen, 1979；Old formula, 1998)；In nuclear fuel element manufacture, The purification of various metals and the cleaning of equipment can generate dust technology-hydrofluoric acid wastewater containing a small amount of uranium, the pollution of this waste water It is on close level low.Spentnuclear fuel post-processes in waste water, and main nucleic includes137Cs、90Sr and uranium, plutonium, higher chain product etc..By above-mentioned money It is one of radioactive liquid waste usual ingredients that material, which can be seen that caesium, wherein137Cs is not only in the isotope of caesium half-life period very The high heat release fission product nucleic or β of long (T1/2=30a) and gamma-ray major radiation source, radioactivity are produced in fission Proportion increases with the extension of decay time in object gross activity.Therefore, the caesium in radioactive wastewater is removed, height can be made to put Penetrating property waste water be reduced in, low-activity waste water, can be by wastewater emission or recycle up to standard after being further processed, enriched product is cured Buried disposition afterwards.Caesium, rubidium exist simultaneously in the high activity liquid waste of part, since the two property is close, typically use identical side Method removes together.
At present removal radioactive wastewater in caesium, rubidium method have chemical precipitation method, ion-exchange, evaporation, extraction, Bioanalysis etc., wherein most Spent Radioactive water concentration is lower, therefore evaporation economic feasibility is poor.Extraction needs are used big Organic reagent is measured, therefore environment-friendly type is poor.From the point of view of being comprehensively compared, chemical precipitation method and ion-exchange research are more.Wherein four Benzene boride is can achieve not except caesium, the precipitating reagent of rubidium using different depositing technologies in the most commonly used radioactive wastewater Same removal effect, highest removal rate can achieve 99.8%.But since tetraphenylboron compound is generally unformed powder, Precipitation and separation rate is slow, and in order to accelerate the rate of departure, existing part research loads to tetraphenylboron compound on basis material, improves It is separated by solid-liquid separation the problem of aspect.But since tetraphenylboron compound is the inorganic matter of stable structure, it is extremely difficult to pass through with basis material Strong effect power forms stable compound, and it is inadequate that stability is recycled.
It is exactly absorption and the precipitation method that processing radioactive cesium, rubidium are most common at present, but adsorbent or sediment are mostly Powder crystal structure is not easy separation of solid and liquid or operate in large scale.
About rubidium caesium in FLOTATION SEPARATION solution, Ma Fuqiu etc. uses potassium ferrocyanide and has investigated pair as precipitation reagent The precipitate flotation of caesium in radioactive liquid waste is found during team's early-stage study, although separating effect is fine, ferrous cyanogen The deposit that compound is formed with caesium, rubidium is not sufficiently stable, and part caesium, rubidium are easy to deviate from.
Summary of the invention
The main purpose of the present invention is to provide the precipitate flotation separation systems of caesium, rubidium in a kind of aqueous solution, existing to overcome There is the deficiency in technology.
Another object of the present invention, which also resides in, provides the precipitate flotation separation system in FLOTATION SEPARATION caesium, rubidium ion Using.
For realization aforementioned invention purpose, the technical solution adopted by the present invention includes:
The embodiment of the invention provides the precipitate flotation separation systems of caesium, rubidium in a kind of aqueous solution comprising:
Precipitating reagent includes at least Prussian blue；And
Collecting agent and foaming agent include at least cationic surfactant.
The embodiment of the invention also provides the precipitate flotation separation systems of caesium, rubidium in the aqueous solution in FLOTATION SEPARATION caesium Application in ion and/or rubidium ion.
The embodiment of the invention also provides the flotation separation methods of caesium, rubidium ion in a kind of aqueous solution comprising:
Will precipitating reagent, collecting agent and foaming agent be added the aqueous solution containing cesium ion and/or rubidium ion in reaction make caesium from Son and/or rubidium ion precipitating, wherein the precipitating reagent includes at least Prussian blue, the collecting agent and foaming agent include at least sun Ionic surface active agent；
The precipitating solid content collecting reaction and obtaining is handled by FLOTATION SEPARATION.
In some preferred embodiments, the flotation separation method specifically includes:
Precipitating reagent is added in the aqueous solution containing cesium ion and/or rubidium ion and be reacted, precipitating solid content is generated, obtains the One intermediate system；
The backward first intermediate system in collecting agent and foaming agent is added, and be uniformly mixed, obtain the second intermediate system；
FLOTATION SEPARATION processing is carried out to the described second intermediate system using floatation separator, collects the precipitating solid Object.
Compared with prior art, beneficial effects of the present invention at least that:
1) provided by the invention with the Prussian blue precipitate flotation system for precipitating reagent, with easy to operate, formation heavy Starch is stable, is easy to the features such as operate in large scale, suitable for solution in the removal of caesium, rubidium ion, especially radioactive liquid waste The removal of caesium, rubidium ion；
2) present invention provides first precipitating, the process of FLOTATION SEPARATION again, and compared with extraction, the scope of application is wide, organic reagent Dosage is low, and extraction is only applicable to separation and Extraction rubidium, caesium under alkaline condition；Compared with direct simple precipitation method, it is separated by solid-liquid separation speed Rate is fast, it is more thorough to be separated by solid-liquid separation；Compared with load type adsorbing agent absorption method, method is easily enlarged scale.
Detailed description of the invention
Fig. 1 be caesium in a kind of aqueous solution in an of the invention exemplary embodiments, cesium ion flotation separation method flow chart.
Specific embodiment
In view of deficiency in the prior art, inventor is studied for a long period of time and is largely practiced, and is able to propose of the invention Technical solution.The technical solution, its implementation process and principle etc. will be further explained as follows.
The precipitate flotation separation system of caesium, rubidium in a kind of aqueous solution that the one aspect of the embodiment of the present invention provides, packet It includes:
Precipitating reagent includes at least Prussian blue；And
Collecting agent and foaming agent include at least cationic surfactant.
In some embodiments, the precipitate flotation separation system further includes stabilizer.
Further, the stabilizer includes No. 2 oil, but not limited to this.
Further, described Prussian blue to make by oneself or by the acquisition of the approach such as purchase.
Further, the collecting agent and foaming agent include hexadecyltrimethylammonium chloride, cetyl trimethyl bromine Change in ammonium, dodecyl trimethyl ammonium bromide, octadecyltrimethylammonium chloride, Dodecyl Dimethyl Amine acetate etc. Any one or two or more combinations, but not limited to this, and preferably hexadecyltrimethylammonium chloride and/or cetyl Trimethylammonium bromide.
The precipitate flotation separation system of caesium, rubidium is in floating in the aqueous solution that the other side of the embodiment of the present invention provides Select the application in separating cesium ions and/or rubidium ion.
The other side of the embodiment of the present invention also provides the flotation separation method of caesium, rubidium ion in a kind of aqueous solution, Include:
Will precipitating reagent, collecting agent and foaming agent be added the aqueous solution containing cesium ion and/or rubidium ion in reaction make caesium from Son and/or rubidium ion precipitating, wherein the precipitating reagent includes at least Prussian blue, the collecting agent and foaming agent include at least sun Ionic surface active agent；
The precipitating solid content collecting reaction and obtaining is handled by FLOTATION SEPARATION.
In some preferred embodiments, the flotation separation method specifically includes:
Precipitating reagent is added in the aqueous solution containing cesium ion and/or rubidium ion and be reacted, precipitating solid content is generated, obtains the One intermediate system；
The backward first intermediate system in collecting agent and foaming agent is added, and be uniformly mixed, obtain the second intermediate system；
FLOTATION SEPARATION processing is carried out to the described second intermediate system using floatation separator, collects the precipitating solid Object.
In some preferred embodiments, the flotation separation method further include: to described containing cesium ion and/or rubidium ion Aqueous solution or the first intermediate system in be added stabilizer, the stabilizer includes No. 2 oil.
Specifically, the flotation separation method of caesium in the aqueous solution, rubidium ion is to be with Prussian blue (self-control or purchase) Precipitating reagent, the cationic surfactants such as hexadecyltrimethylammonium chloride are collecting agent and foaming agent, and No. 2 oil are stabilizer, Carry out the precipitate flotation of caesium, rubidium.
In some more specifically embodiments, precipitate flotation operating process be can be found in shown in Fig. 1, first by the general Shandong of precipitating reagent Scholar's indigo plant be added to containing caesium, rubidium ion solution in, precipitating completely after, add collecting agent hexadecyltrimethylammonium chloride and Stabilizer, being passed through air and carrying out FLOTATION SEPARATION (can also carry out precipitating reagent and flotation agent while being added in solution precipitating to float Choosing).
Further, the time of the reaction is 0.1~12h.
Further, it can be arbitrary size that the precipitating reagent is Prussian blue.Caesium in precipitating reagent and aqueous solution, rubidium ion Molar ratio is 1:3~3:1.
Further, cationic surfactant is used as collecting agent and foaming agent simultaneously, the collecting agent and foaming agent with The mass volume ratio of aqueous solution is 0.01g/L~0.1g/L, and flotation can be carried out by being added to be greater than 5 minutes in solution after precipitating.
Further, the collecting agent and foaming agent include hexadecyltrimethylammonium chloride, cetyl trimethyl bromine Change in ammonium, dodecyl trimethyl ammonium bromide, octadecyltrimethylammonium chloride, Dodecyl Dimethyl Amine acetate etc. Any one or two or more combinations, but not limited to this, and preferably hexadecyltrimethylammonium chloride and/or cetyl Trimethylammonium bromide.
Further, the flotation separation method includes: to be added among described first by the collecting agent and foaming agent 5min or more is stirred after system, then carries out the FLOTATION SEPARATION processing.
Further, the mass volume ratio of the stabilizer and aqueous solution is 0~0.1g/L.
Further, the aqueous solution includes radioactive liquid waste, but not limited to this.
In conclusion it is provided by the invention with the Prussian blue precipitate flotation system for precipitating reagent, there is easy to operate, shape At precipitate stable, be easy to the features such as operate in large scale, the removal of caesium, rubidium ion, especially radioactivity suitable for solution The removal of caesium, rubidium ion in waste liquid.
Below by specific embodiments and drawings, the invention will be further described, but it is above-mentioned to should not be construed the present invention Subject area is only limitted to following embodiments.Without departing from the idea case in the present invention described above, according to the common skill in this field Art knowledge and customary means make various replacements and change, should all include within the scope of the present invention.In the following example The test method of actual conditions is not specified, usually according to normal condition.
Embodiment 1
First to 500mL Cs+Prussian blue 1.0mmol is added in the CsCl solution of 1mmol/L, is stirred to react 60 minutes Afterwards, hexadecyltrimethylammonium chloride 0.02g, No. 2 oil 0.1mL is added to be placed in flotation cell after stirring 30 minutes and carry out flotation Flotation froth is collected in separation, carries out Cs in flotation substrate+Concentration analysis (calculates to obtain removal rate 97%).
Embodiment 2
First to 500mL Cs+Prussian blue 1.0mmol is added in the CsCl solution of 1mmol/L, is stirred to react 30 minutes Afterwards, hexadecyltrimethylammonium chloride 0.015g, No. 2 oil 0.1mL is added to be placed in flotation cell and floated after stirring 30 minutes Choosing separation, collects flotation froth, carries out Cs in flotation substrate+Concentration analysis (calculates to obtain removal rate 98%).
Embodiment 3
First to 500mL Cs+Prussian blue 1.5mmol is added in the CsCl solution of 1mmol/L, is stirred to react 6 minutes Afterwards, hexadecyltrimethylammonium chloride 0.005g is added to be placed in flotation cell after stirring 30 minutes and carry out FLOTATION SEPARATION, collects Flotation froth carries out Cs in flotation substrate+Concentration analysis (calculates to obtain removal rate 98.5%).
Embodiment 4
First to 500mL Rb+Prussian blue 0.5mmol is added in the RbCl solution of 1mmol/L, after being stirred to react 3h, Hexadecyltrimethylammonium chloride 0.03g, No. 2 oil 0.03g is added, stirring after sixty minutes, is placed in flotation cell and carries out flotation point From collection flotation froth carries out Rb in flotation substrate+Concentration analysis (calculates to obtain removal rate 93%).
Embodiment 5
First to 500mL Cs+Prussian blue 0.5mmol is added in the CsCl solution of 1.5mmol/L, is stirred to react 12h Afterwards, hexadecyltrimethylammonium chloride 0.04g, No. 2 oil 0.05g is added, stirring after sixty minutes, is placed in flotation cell and carries out flotation Flotation froth is collected in separation, carries out Cs in flotation substrate+Concentration analysis (calculates to obtain removal rate 92%).
Embodiment 6
First to 500mL Cs+Prussian blue 0.2mmol is added in the CsCl solution of 1.2mmol/L, is stirred to react 10h Afterwards, hexadecyltrimethylammonium chloride 0.05g is added to be placed in flotation cell after stirring 90 minutes and carry out FLOTATION SEPARATION, collects floating Foam is selected, Cs in flotation substrate is carried out+Concentration analysis (calculates to obtain removal rate 93.5%).
Reference examples 1
This reference examples, as precipitation reagent, carries out precipitate flotation to caesium in radioactive liquid waste, still using potassium ferrocyanide The deposit that ferrocyanide is formed with caesium is not sufficiently stable, and part caesium is easy to deviate from.
By 1-6's as a result, of the invention with the Prussian blue precipitate flotation system for precipitating reagent, tool of the embodiment of the present invention There is precipitate stable that is easy to operate, being formed, be easy to the features such as operate in large scale, caesium, rubidium ion suitable for radioactive liquid waste Removal.
Each aspect of the present invention, embodiment, feature and example should be regarded as to be illustrative and is not intended to limit in all respects The system present invention, the scope of the present invention are only defined by tbe claims.Without departing substantially from the spirit and scope of the present invention advocated In the case of, it will be apparent to those skilled in the art that other embodiments, modification and use.
The use of title and chapters and sections is not intended to limit the present invention in case of the present invention；Each chapters and sections can be applied to the present invention Any aspect, embodiment or feature.
Case of the present invention in the whole text in, composition is being described as have, containing or comprising in place of specific component or will Process description is in place of having, containing or comprising particular procedure step, it is contemplated that the composition of teachings of this disclosure is also substantially by institute Narration component composition is made of described component, and the process of teachings of this disclosure is also substantially made of described process steps Or it is made of described process steps group.
Unless otherwise specific statement, otherwise term " include (include, includes, including) ", " have The use of (have, has or having) " is it is generally understood that be open and without limitation.
It should be understood that the order of each step or the order of execution specific action are not particularly significant, as long as teachings of this disclosure is protected Holding can operate.In addition, two or more steps or movement can be carried out simultaneously.
In addition, inventor also refers to previous embodiment, other raw materials for being addressed with this specification, technological operation, work Skill condition is tested, and obtains ideal result.
Although describing the present invention with reference to an illustrative embodiment, those skilled in the art will appreciate that, it is not carrying on the back Various other changes can be made in the case where from spirit and scope of the present invention, are omitted and/or are added and can use substantial equivalents Substitute the element of the embodiment.In addition, many modifications can be made without departing substantially from the scope of the present invention so that specific Situation or material adapt to teachings of the present invention.Therefore, it is not to restrict the invention to herein for executing institute of the invention Specific embodiment is disclosed, and being intended to makes the present invention by all implementations comprising falling within the scope of the appended claims Example.In addition, removing non-specific statement, otherwise any use of term first, second etc. does not indicate any order or importance, but An element and another element are distinguished using term first, second etc..
It should be appreciated that above-described is only some embodiments of the present invention, it is noted that for the common of this field For technical staff, under the premise of not departing from concept of the invention, other modification and improvement can also be made, these are all It belongs to the scope of protection of the present invention.

Claims (10)

1. the precipitate flotation separation system of caesium, rubidium in a kind of aqueous solution, characterized by comprising:
Precipitating reagent includes at least Prussian blue；And
Collecting agent and foaming agent include at least cationic surfactant.
2. precipitate flotation separation system according to claim 1, it is characterised in that further include stabilizer；Preferably, described Stabilizer includes No. 2 oil；And/or the collecting agent and foaming agent include hexadecyltrimethylammonium chloride, cetyl front three Base ammonium bromide, dodecyl trimethyl ammonium bromide, octadecyltrimethylammonium chloride, in Dodecyl Dimethyl Amine acetate Any one or two or more combinations, preferably hexadecyltrimethylammonium chloride and/or cetyl trimethyl bromination Ammonium.
3. the precipitate flotation separation system of caesium in aqueous solution of any of claims 1 or 2, rubidium in FLOTATION SEPARATION cesium ion and/or Application in rubidium ion.
4. the flotation separation method of caesium, rubidium ion in a kind of aqueous solution, characterized by comprising:
Will precipitating reagent, collecting agent and foaming agent be added the aqueous solution containing cesium ion and/or rubidium ion in reaction make cesium ion and/ Or rubidium ion precipitating, wherein the precipitating reagent includes at least Prussian blue, the collecting agent and foaming agent include at least cation Surfactant；
The precipitating solid content collecting reaction and obtaining is handled by FLOTATION SEPARATION.
5. flotation separation method according to claim 4, it is characterised in that specifically include:
Precipitating reagent is added in the aqueous solution containing cesium ion and/or rubidium ion and is reacted, precipitating solid content is generated, obtains in first Between system；
The backward first intermediate system in collecting agent and foaming agent is added, and be uniformly mixed, obtain the second intermediate system；
FLOTATION SEPARATION processing is carried out to the described second intermediate system using floatation separator, collects the precipitating solid content.
6. flotation separation method according to claim 4 or 5, it is characterised in that further include: to it is described containing cesium ion and/ Rubidium ion aqueous solution or the first intermediate system in be added stabilizer, the stabilizer includes No. 2 oil.
7. flotation separation method according to claim 5, it is characterised in that: the time of the reaction is 0.1~12h；With/ Or, the molar ratio of cesium ion and/or rubidium ion is 1:3~3:1 in the precipitating reagent and aqueous solution.
8. flotation separation method according to claim 5, it is characterised in that: the collecting agent and foaming agent include hexadecane Base trimethyl ammonium chloride, cetyl trimethylammonium bromide, dodecyl trimethyl ammonium bromide, octadecyl trimethyl chlorination Any one in ammonium, Dodecyl Dimethyl Amine acetate or two or more combinations, preferably cetyl trimethyl Ammonium chloride and/or cetyl trimethylammonium bromide；And/or the mass volume ratio of the collecting agent and foaming agent and aqueous solution For 0.01g/L~0.1g/L；And/or the flotation separation method includes: that the collecting agent and foaming agent are being added described the 5min or more is stirred after one intermediate system, then carries out the FLOTATION SEPARATION processing.
9. flotation separation method according to claim 6, it is characterised in that: the quality volume of the stabilizer and aqueous solution Than for 0~0.1g/L.
10. flotation separation method according to claim 4 or 5, it is characterised in that: the aqueous solution includes Spent Radioactive Liquid.
CN201910583358.4A 2019-07-01 2019-07-01 Caesium, the precipitate flotation separation system of rubidium and its application in a kind of aqueous solution Pending CN110293002A (en)

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CN104470648A (en) * 2012-05-11 2015-03-25 原子能与替代能源委员会 Method for the radioactive decontamination of soil by dispersed air flotation foam and said foam
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Application publication date: 20191001