CN110721817A - Collecting agent for floating uranyl carbonate ions and application thereof - Google Patents
Collecting agent for floating uranyl carbonate ions and application thereof Download PDFInfo
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- CN110721817A CN110721817A CN201911200472.0A CN201911200472A CN110721817A CN 110721817 A CN110721817 A CN 110721817A CN 201911200472 A CN201911200472 A CN 201911200472A CN 110721817 A CN110721817 A CN 110721817A
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- uranyl carbonate
- alkyl phosphate
- ions
- carbonate ions
- floating
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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
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/016—Macromolecular compounds
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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
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/014—Organic compounds containing phosphorus
-
- 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
-
- 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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
Abstract
The invention provides a collector for floating uranyl carbonate ions, which is formed by mixing alkyl phosphate and/or alkyl phosphate ester salt with polyethylene glycol, wherein polyethylene glycol is added into an alkyl phosphate salt solution, so that the dispersion of the alkyl phosphate ions in the solution can be promoted, meanwhile, part of polyethylene glycol molecules are co-adsorbed on the uranyl carbonate ions and participate in forming a complex, and therefore, the hydrophobicity is improved, and the use of the alkyl phosphate or the alkyl phosphate ester salt is reduced; the invention also provides a method for floating uranyl carbonate ions by using the collecting agent, which comprises the step of adding the collecting agent into a uranyl carbonate ion solution for floating.
Description
Technical Field
The invention relates to the relevant technical field of uranyl carbonate ion enrichment, in particular to a collecting agent for floating uranyl carbonate ions and a method for floating uranyl carbonate ions.
Background
In a traditional uranium hydrometallurgy system, ion exchange and extraction processes are adopted, the process flow is complex, the treatment capacity is small, the investment is large, the energy consumption is high, the organic phase of the extraction process is compatible and easily pollutes the water phase, and the recycling is not facilitated. The method is a new process for enriching and separating uranyl carbonate ions by adopting flotation of alkyl phosphate ions, but only the alkyl phosphate ions are used as collecting agents, so that the using amount is large, the cost is high in application and industry, and the industrial application of the alkyl phosphate ions is always restricted.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a collector for floating uranyl carbonate ions, which consists of alkyl phosphate and/or alkyl phosphate ester salt and polyethylene glycol, wherein the alkyl phosphate and polyethylene glycol are mixed to reduce the dosage of alkyl phosphate ions used in the process of floating uranyl carbonate ions, so that the dosage of alkyl phosphate or alkyl phosphate ester salt is reduced.
In order to achieve the above purpose, the invention provides the following technical scheme:
a collector for floating uranyl carbonate ions is formed by mixing alkyl phosphate ion solution and polyethylene glycol (PEG).
Further, the amount of the substance of the polyethylene glycol is 0.1-2% of the alkyl phosphate ion.
Further, the alkyl phosphate ions are one or a mixture of more than two of dodecyl phosphate ions, triphosphate ions, butyl phosphate ions or behenyl phosphate ions.
Further, the alkyl phosphate ionic solution is prepared by dispersing alkyl phosphate and/or alkyl phosphate ester salt in a solvent.
Further, the alkyl phosphate salt is alkyl phosphate sodium salt or alkyl phosphate potassium salt.
The invention also discloses a method for floating uranyl carbonate ions by using the collecting agent, which comprises the following steps:
s1: preparing an alkyl phosphate salt solution;
s2: adding the uranyl carbonate ion solution into a flotation device, then adding the alkyl phosphate salt solution prepared by the S1 and polyethylene glycol in proportion, mixing to form a mixed solution, and then performing aeration flotation to form foam water and tail water.
Further, in the mixed solution of S2, the molar ratio of the alkyl phosphate ion to the uranyl carbonate ion is 4: 1-12.
Further, in the S2, after the alkyl phosphate salt solution and the polyethylene glycol are added, stirring is firstly carried out for 3-10min, and then air is introduced for carrying out flotation, wherein the flotation time is 10-20 min.
Further, the ventilation volume in the S2 is 15-20L/min.
Further, the concentration of the uranyl carbonate ions in the uranyl carbonate ion solution is 300-500 mg/L; the concentration of the uranyl carbonate ions in the tail water is 3.5-20 mg/L.
Compared with the prior art, the invention has the following beneficial effects:
the uranyl carbonate ion solution contains uranyl carbonate ions with higher concentration, polyethylene glycol is added into an alkyl phosphate salt solution, so that the dispersion of the alkyl phosphate ions in a mixed solution can be promoted, meanwhile, part of polyethylene glycol molecules are adsorbed on the uranyl carbonate ions together to participate in forming a complex, the hydrophobicity is improved, the use of the alkyl phosphate ions is reduced, and the use of alkyl phosphate or alkyl phosphate salt is reduced.
Detailed Description
The invention aims to provide a collector for floating uranyl carbonate ions and a method for floating uranyl carbonate ions. The technical scheme of the invention is as follows:
a collector for floating uranyl carbonate ions consists of alkyl phosphate ions and PEG, and preferably, the content of the substances of the polyethylene glycol is 0.1-2% of the content of the alkyl phosphate ions.
In a more preferred embodiment, the alkyl phosphate solution is prepared by dispersing alkyl phosphate and/or alkyl phosphate ester salt in a solvent, which may be an organic solvent such as water or ethanol, and water is used as the solvent from the viewpoint of environmental protection; alkyl phosphate ions include, but are not limited to, dodecyl phosphate ions, triphosphate ions, butyl phosphate ions, behenyl phosphate ions, or the like; the alkyl phosphate salt is alkyl phosphate sodium salt and/or alkyl phosphate potassium salt, and the alkyl phosphate potassium salt or the alkyl phosphate sodium salt has good solubility in water.
After the alkyl phosphate and/or the alkyl phosphate salt are prepared into a solution, a large amount of alkyl phosphate ions exist in the solution, the alkyl phosphate ions can form a complex with uranyl carbonate ions in the uranyl carbonate solution, the addition of PEG can promote the dispersion of the alkyl phosphate ions, so that the alkyl phosphate ions fully participate in the reaction, the use amount of the alkyl phosphate ions is reduced, the use amount of the alkyl phosphate and/or the alkyl phosphate salt is further reduced, and compared with the flotation only using the alkyl phosphate ions, the flotation effect is better after the PEG is added, and the uranyl carbonate ion concentration in tail water after the flotation is lower; preferably, PEG2000 is added into the alkyl phosphate salt solution, so that the flotation effect is better. More specifically, the potassium or sodium alkyl phosphate ester includes, but is not limited to, potassium dodecyl phosphate ester, sodium dodecyl phosphate ester, potassium trialkyl phosphate ester, sodium trialkyl phosphate ester, potassium butyl phosphate ester, sodium butyl phosphate ester, potassium behenyl phosphate ester, sodium behenyl phosphate ester, and the like.
A method of floating uranyl carbonate ions using a collector as described above, comprising the steps of:
s1: preparing an alkyl phosphate ionic solution;
s2: adding a uranyl carbonate ion solution with the uranyl carbonate ion concentration of 300-500mg/L into a flotation device, then adding an alkyl phosphate solution and PEG prepared by S1 in proportion, stirring for 3-10min at the speed of 1500-2500r/min, and then performing aeration flotation for 10-20min to obtain foamed water with the uranyl carbonate ion concentration of 4000-4800mg/L and tail water with the uranyl carbonate ion concentration of 3.5-10 mg/L; wherein the ventilation amount is 15-20L/min, the molar ratio of alkyl phosphate ions to uranyl carbonate ions is 4: 1-12.
The technical solutions of the present invention will be described clearly and completely with reference to specific embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A collector for floating uranyl carbonate ions comprises a sodium dodecyl phosphate solution and PEG2000, wherein the amount of PEG2000 is 0.5% of that of dodecyl phosphate ions.
A method for floating uranyl carbonate ions by using the collecting agent, comprising the following steps:
s1: preparing a sodium dodecyl phosphate solution;
s2: adding solution with uranyl carbonate ion concentration of 300mg/L into a laboratory 1.5L groove suspension flotation machine, respectively adding sodium dodecyl phosphate solution prepared by S1 and PEG2000 in proportion, stirring for 10min, then ventilating for 20min for flotation, and obtaining foam water and tail water, wherein the ventilation rate is 20L/min; wherein the mol ratio of the dodecyl phosphate ions to the uranyl carbonate ions is 4: 1.
examples 2 to 7
Examples 2 to 7 were different from example 1 in that the molar ratio of the concentration of the dodecyl phosphate ion to the uranyl carbonate ion in S2, and the specific results are shown in table 1.
TABLE 1 examples 2-7 molar ratio of dodecyl phosphate ion to uranyl carbonate ion
The foamed water and tail water obtained in examples 1 to 7 were subjected to the measurement of the uranyl carbonate ion concentration, and the measurement results are shown in table 2.
Table 2 examples 1-7 test results for uranyl carbonate ion concentration in foam water and tail water
Example 8
A collector for floating uranyl carbonate ions consists of sodium dodecyl phosphate and PEG2000, wherein the amount of PEG2000 is 1% of that of the dodecyl phosphate ions.
A method for floating uranyl carbonate ions by using the collecting agent, comprising the following steps:
s1: preparing a sodium dodecyl phosphate solution with the concentration of 20 percent;
s2: adding solution with uranyl carbonate ion concentration of 300mg/L into a laboratory 1.5L groove suspension flotation machine, respectively adding sodium dodecyl phosphate solution prepared by S1 and PEG2000 in proportion, stirring for 10min, then ventilating for 20min for flotation, and obtaining foam water and tail water, wherein the ventilation rate is 20L/min; wherein the mol ratio of the dodecyl phosphate ions to the uranyl carbonate ions is 4: 1.
examples 9 to 14
Uranyl carbonate ions were floated by the method of example 8, and examples 9 to 14 were different from example 8 in that the molar ratio of the dodecylphosphate ion to the uranyl carbonate ion in S2 was different, as shown in table 1.
The foamed water and tail water obtained in examples 8 to 14 were subjected to the measurement of the uranyl carbonate ion concentration, and the measurement results are shown in table 3.
Table 3 examples 8-14 test results for uranyl carbonate ion concentration in foam water and tail water
Example 15
A collector for floating uranyl carbonate ions consists of sodium dodecyl phosphate and PEG2000, wherein the amount of PEG2000 is 2% of that of the dodecyl phosphate ions.
A method for floating uranyl carbonate ions by using the collecting agent, comprising the following steps:
s1: preparing a sodium dodecyl phosphate solution;
s2: adding solution with uranyl carbonate ion concentration of 300mg/L into a laboratory 1.5L groove suspension flotation machine, respectively adding sodium dodecyl phosphate solution prepared by S1 and PEG2000 in proportion, stirring for 10min, then ventilating for 20min for flotation, and obtaining foam water and tail water, wherein the ventilation rate is 20L/min; wherein the mol ratio of the dodecyl phosphate ions to the uranyl carbonate ions is 4: 1.
examples 16 to 21
Examples 16 to 21 were separated from example 15 by flotation of uranyl carbonate ions by the method of example 15, except that the molar ratio of the concentration of the dodecyl phosphate ion to the uranyl carbonate ion in S2 was different, as shown in table 1.
The foamed water and tail water obtained in examples 8 to 14 were subjected to the measurement of the uranyl carbonate ion concentration, and the measurement results are shown in table 4.
Table 4 examples 15-21 test results for uranyl carbonate ion concentration in foam waters and tail waters
Comparative example 1
The difference between the comparative example and the example 1 is that the collecting agent is only sodium dodecyl phosphate, and the method for floating the uranyl carbonate ions is the same as that of the example 1; the molar ratio of the dodecyl phosphate ion to the uranyl carbonate ion was the same as that of example 1.
Comparative examples 2 to 7
Uranyl carbonate ions were floated in the manner of comparative example 1, and comparative examples 2 to 7 were different from comparative example 1 in that the molar ratio of dodecyl phosphate ions to uranyl carbonate ions was different from that of comparative example 1, as shown in table 1.
Comparative example 8
The present comparative example differs from comparative example 1 in that the molar ratio of the dodecyl phosphate ion to the uranyl carbonate ion is 2.2: 1.
the foamed water and tail water obtained in comparative examples 1 to 8 were subjected to the test for the uranyl carbonate ion concentration, and the test results are shown in table 5.
TABLE 5 test results of uranyl carbonate ion concentrations in foam water and tail water of comparative examples 1 to 8
As shown in tables 2 to 5, when PEG2000 was added to the dodecyl phosphate solution and the molar ratio of dodecyl phosphate ions to uranyl carbonate ions was 1.8: 1, the uranyl carbonate ions can be sufficiently floated, and the dodecyl phosphate ion solution without PEG2000 is required to have the molar ratio of the dodecyl phosphate ions to the uranyl carbonate of 2.2: 1, the uranyl carbonate ions can be fully floated, so that the addition of PEG2000 to the dodecyl phosphate ion solution can reduce the dosage of dodecyl phosphate ions, namely the dosage of dodecyl phosphate or dodecyl phosphate salt, and the application of the dodecyl phosphate ion solution in industry can greatly reduce the production cost.
As shown in tables 2 to 4, when the amount of PEG2000 added was 0.5% of the dodecylphosphate ion, the uranyl carbonate ion concentration in the tail water after the sufficient flotation was 4.8 mg/L; when the amount of the added PEG2000 substance is 2% of that of dodecyl phosphate ions, the uranyl carbonate ion concentration in the tail water is 3.5 mg/L; therefore, the higher the concentration of PEG2000 added into the dodecyl phosphate solution is, the better the flotation effect on uranyl carbonate ions is, and further, the addition of PEG2000 can reduce the dosage of dodecyl phosphate ions for the flotation of uranyl carbonate ions.
While the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A collector for floating uranyl carbonate ions is characterized by being formed by mixing alkyl phosphate ion solution and polyethylene glycol.
2. A collector for the flotation of uranyl carbonate ions according to claim 2, wherein the amount of substance of polyethylene glycol is 0.1-2% of the alkyl phosphate ions.
3. A collector for flotation of uranyl carbonate ions according to claim 2, wherein the alkyl phosphate ions are one or a mixture of two or more of dodecyl phosphate ions, triphosphate ions, butyl phosphate ions, or behenyl phosphate ions.
4. A collector for flotation of uranyl carbonate ions according to claim 3, wherein the alkyl phosphate ion solution is prepared by dispersing alkyl phosphate and/or alkyl phosphate salt in a solvent.
5. A collector for the flotation of uranyl carbonate ions according to claim 4, wherein the alkyl phosphate salt is an alkyl phosphate sodium salt or an alkyl phosphate potassium salt.
6. A method of floating uranyl carbonate ions with the collector of any one of claims 1 to 5, comprising the steps of:
s1: preparing an alkyl phosphate ionic solution;
s2: adding the uranyl carbonate ion solution into a flotation device, then adding the alkyl phosphate salt solution prepared by the S1 and polyethylene glycol in proportion, mixing to form a mixed solution, and then performing aeration flotation to form foam water and tail water.
7. The method for floating uranyl carbonate ions according to claim 6, wherein the molar ratio of alkyl phosphate ions to uranyl carbonate ions in the mixed solution of S2 is 4: 1-12.
8. The method for floating uranyl carbonate ions according to claim 6, wherein after the alkyl phosphate salt solution and the polyethylene glycol are added to the S2, the mixture is stirred for 3-10min and then subjected to floatation through air, and the floatation time is 10-20 min.
9. The method for flotation of uranyl carbonate ions according to claim 6, wherein the ventilation rate in S2 is 15-20L/min.
10. The method for floating uranyl carbonate ions according to claim 6, wherein the concentration of uranyl carbonate ions in the uranyl carbonate ion solution is 300-500 mg/L; the concentration of the uranyl carbonate ions in the tail water is 3.5-10 mg/L.
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| CN201911200472.0A CN110721817B (en) | 2019-11-29 | 2019-11-29 | Collecting agent for floating uranyl carbonate ions and application thereof |
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| CN201911200472.0A CN110721817B (en) | 2019-11-29 | 2019-11-29 | Collecting agent for floating uranyl carbonate ions and application thereof |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86101682A (en) * | 1985-05-31 | 1987-01-28 | 陶氏化学公司 | Be used for sulfide mineral and select the new collector of pneumatic flotation |
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2019
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