CN217042621U - Ion exchange method is carried uranium and is used leaching device - Google Patents
Ion exchange method is carried uranium and is used leaching device Download PDFInfo
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- CN217042621U CN217042621U CN202123077692.4U CN202123077692U CN217042621U CN 217042621 U CN217042621 U CN 217042621U CN 202123077692 U CN202123077692 U CN 202123077692U CN 217042621 U CN217042621 U CN 217042621U
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Abstract
The utility model particularly relates to an elution device for extracting uranium by an ion exchange method, which comprises an ion exchange device, an elution agent storage pool, an elution qualified liquid storage pool, a liquid collecting pool, an elution agent pump, a tower filling pump, an exhaust valve, an air inlet valve, a liquid inlet valve and a tower filling valve; the ion exchange device is respectively connected with an exhaust valve, an air inlet valve, a liquid inlet valve and a tower filling valve through pipelines; the bottom of the eluting qualified liquid storage tank is connected with a tower filling valve pipeline, and the bottom of the eluting agent storage tank is connected with a liquid inlet valve pipeline; the bottom of the ion exchange device is respectively connected with the liquid collecting tank and the top of the storage tank for the qualified liquid for leaching through pipelines, the bottom of the ion exchange device is provided with a tail liquid discharge valve on a pipeline connected with the liquid collecting tank, and the bottom of the ion exchange device is provided with a qualified liquid for leaching discharge valve on a pipeline connected with the top of the storage tank for the qualified liquid for leaching. The utility model provides an ion exchange method carries elution device for uranium, and effectual improvement elution goes out liquid uranium concentration, reduces elution liquid output volume, reduce cost.
Description
Technical Field
The utility model relates to an ion exchange handles technical field, especially relates to an ion exchange method carries elution device for uranium.
Background
Ion exchange resins are widely used in the uranium extraction industry for uranium extraction. Ion exchange resins are generally used to adsorb uranium from sulfuric acid systems and carbonate systems. Then leaching the uranium from the ion exchange resin by using sulfuric acid, chloride, carbonate, nitrate and the like as a leaching agent, and realizing enrichment and purification of the uranium through ion exchange adsorption and leaching.
In the leaching process, the higher the concentration of the produced unit metal, the smaller the volume of the qualified liquid, and further the consumption of power, raw materials and the like is reduced. In order to ensure the uranium concentration of the leached qualified liquid, the uranium concentration of the leached qualified liquid is controlled by methods of leaching with multiple towers in series, intercepting part of the solution with higher uranium concentration in the leaching process as the qualified liquid and the like in the current production process.
SUMMERY OF THE UTILITY MODEL
On the basis, the leaching device for extracting uranium by the ion exchange method is provided for solving the problems of low uranium concentration and large leaching volume of leached qualified uranium liquid in the uranium extracting process by the ion exchange method, and the leaching device is used for leaching ion exchange resin to improve the uranium concentration of the leached qualified uranium liquid.
In order to achieve the above object, the present invention provides the following technical solutions:
a leaching device for extracting uranium by an ion exchange method comprises an ion exchange device, a leaching agent storage pool, a qualified leaching liquid storage pool, a liquid collecting pool, a leaching agent pump, a tower filling pump, an exhaust valve, an air inlet valve, a liquid inlet valve and a tower filling valve;
the ion exchange device is respectively connected with an exhaust valve, an air inlet valve, a liquid inlet valve and a tower filling valve through pipelines; the bottom of the qualified leaching liquid storage tank is connected with a tower filling valve pipeline, and the bottom of the leaching agent storage tank is connected with a liquid inlet valve pipeline;
the bottom of the ion exchange device is respectively connected with the liquid collecting tank and the top of the storage tank for the qualified leached liquid through pipelines, the bottom of the ion exchange device is provided with a tail liquid discharge valve on a pipeline connected with the liquid collecting tank, and the bottom of the ion exchange device is provided with a qualified leached liquid discharge valve on a pipeline connected with the top of the storage tank for the qualified leached liquid.
Further, an outlet pipeline at the bottom of the qualified leaching liquid storage tank is connected with an inlet of a packed tower pump, and an outlet of the packed tower pump is connected with a pipeline of a packed tower valve; and an outlet pipeline at the bottom of the eluent storage tank is connected with an inlet of an eluent pump, and an outlet of the eluent pump is connected with a pipeline of a liquid inlet valve.
Further, an air inlet valve on the ion exchange device is connected with a compressed air storage tank, and an air outlet valve on the ion exchange device is communicated with the atmosphere.
Furthermore, the ion exchange device is formed by connecting a plurality of ion exchange towers in series, the top of each ion exchange tower is respectively connected with an exhaust valve, an air inlet valve, a liquid inlet valve and a tower filling valve through pipelines, and the liquid inlet valve on each ion exchange tower is connected with a pipeline at the bottom of the other ion exchange tower;
the bottom of the eluting qualified liquid storage tank is connected with a tower filling valve pipeline on each ion exchange tower, and the bottom of the eluting agent storage tank is connected with a liquid inlet valve pipeline on each ion exchange tower;
the bottom of each ion exchange tower is respectively connected with a liquid collecting tank and a pipeline at the top of a qualified leaching liquid storage tank, and a tail liquid discharge valve is arranged on a pipeline at the bottom of each ion exchange tower, which is connected with the liquid collecting tank; and a qualified elution liquid discharge valve is arranged on a pipeline which is connected with the bottom of each ion exchange tower and the top of the qualified elution liquid storage tank.
Further, an outlet pipeline at the bottom of the qualified leaching liquid storage tank is connected with an inlet of a packed tower pump, and an outlet of the packed tower pump is connected with a pipeline of a packed tower valve on each ion exchange tower; and an outlet pipeline at the bottom of the eluent storage tank is connected with an inlet of an eluent pump, and an outlet of the eluent pump is connected with a pipeline of a liquid inlet valve on each ion exchange tower.
Further, the air inlet valve on each ion exchange tower is connected with a compressed air storage tank pipeline.
Furthermore, the ion exchange device is formed by connecting at least 3 ion exchange towers in series, and the ion exchange towers are fixed bed ion exchange towers.
The utility model has the advantages of that:
the utility model discloses an ion exchange method carries out elution device for uranium has safe and reliable, the installation is simple and easy, low cost, high-efficient stable characteristics, utilizes ion exchange method to carry out the elution of ion exchange resin with elution device for uranium, and effectual improvement elution goes out liquid uranium concentration, reduces elution liquid output, reduce cost.
Drawings
Fig. 1 is a schematic structural diagram of the leaching device for extracting uranium by the ion exchange method in embodiment 1.
In the figure, 1, an exhaust valve; 2. an intake valve; 3. a liquid inlet valve; 4. a tower filling valve; 5. a tail liquid discharge valve; 6. a qualified liquid discharge valve is leached; 7. a tower filling pump; 8. a qualified liquid storage pool is leached; 9. an ion exchange column; 10. a eluent pump; 11. a eluent reservoir.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
The utility model provides an ion exchange method carries leaching device for uranium, including ion exchange device, eluting agent reservoir 11 and the qualified liquid reservoir 8 of eluting.
The ion exchange device is formed by connecting 3 ion exchange towers 9 in series, the top of each ion exchange tower 9 is respectively connected with an exhaust valve 1, an air inlet valve 2, a liquid inlet valve 3 and a tower filling valve 4 through pipelines, and the liquid inlet valve 3 on each ion exchange tower 9 is connected with the bottom of the other ion exchange tower 9 through a pipeline.
The bottom of the eluting qualified liquid storage tank 8 is connected with the tower filling valve 4 on each ion exchange tower 9 through a pipeline, and the bottom of the eluting agent storage tank 11 is connected with the liquid inlet valve 3 on each ion exchange tower 9 through a pipeline.
The bottom of each ion exchange tower 9 is respectively connected with a liquid collecting tank and a pipeline at the top of the qualified liquid leaching storage tank 8, and a tail liquid discharge valve 5 is arranged on a pipeline at the bottom of each ion exchange tower 9, which is connected with the liquid collecting tank; and a qualified eluting liquid discharge valve 6 is arranged on a pipeline connecting the bottom of each ion exchange tower 9 with the top of the qualified eluting liquid storage tank 8.
An outlet at the bottom of the qualified leaching liquid storage tank 8 is connected with an inlet of a packed tower pump 7 through a pipeline, and an outlet of the packed tower pump 7 is connected with a pipeline of a packed tower valve 4 on each ion exchange tower 9; an outlet pipeline at the bottom of the eluent storage tank 11 is connected with an inlet of an eluent pump 10, and an outlet of the eluent pump 10 is connected with a pipeline of a liquid inlet valve 3 on each ion exchange tower 9.
The air inlet valve 2 on each ion exchange tower 9 is connected with a compressed air storage tank, and the air outlet valve 1 on each ion exchange tower is communicated with the atmosphere.
The ion exchange column 9 is a fixed bed ion exchange column.
The leaching of the ion exchange resin for leaching uranium extraction from the mine leaching uranium extraction in a certain place of inner Mongolia by using the leaching device for extracting uranium by the ion exchange method comprises the following steps:
step 1: when the resin in the ion exchange tower 9 is saturated, opening the tail liquid discharge valve 5 and the air inlet valve 2 on the ion exchange tower 9, filling compressed air into the ion exchange tower 9, and pressing the adsorption tail liquid in the ion exchange tower 9 out to a liquid collecting tank by the compressed air;
step 2: after the solution in the ion exchange tower 9 is dried, closing the air inlet valve 2 on the ion exchange tower 9, opening the air outlet valve 1 on the ion exchange tower 9, and discharging the air in the ion exchange tower 9;
and 3, step 3: after the air in the ion exchange tower 9 is exhausted, opening a tower filling valve 4 on the ion exchange tower 9, starting a tower filling pump 7, and filling the qualified leaching liquid into the ion exchange tower 9 from a qualified leaching liquid storage tank 8;
and 4, step 4: after the ion exchange tower 9 is filled with the eluted qualified liquid, closing an exhaust valve 1 on the ion exchange tower 9, opening a tail liquid discharge valve 5, continuously filling the eluted qualified liquid into the crossover tower 9, and discharging the solution in the crossover tower 9 to a liquid collecting tank through the tail liquid discharge valve 5;
and 5: and when the uranium concentration in the discharged solution reaches 0.5g/l, stopping the tower filling pump 7, stopping filling the qualified leached liquid into the ion exchange tower 9, opening a qualified leached liquid discharge valve 6, closing a tail liquid discharge valve 5, opening a liquid inlet valve 3 on the ion exchange tower 9, starting a eluent pump 10, filling the eluent into the ion exchange tower 9 from an eluent storage tank 11, and discharging the eluent from the qualified leached liquid discharge valve 6 to an qualified leached liquid storage tank 8 through the ion exchange tower 9.
The eluent storage tank 11 is filled with an eluent, and the concentration of the eluent is 100-120g/l of sulfuric acid aqueous solution.
The pressure of the compressed air is less than or equal to 0.4 MPa.
The volume of the saturated resin residual aqueous solution replacement is determined according to the product of the volume of the wet resin and the water content of the wet resin, and is 0.3-0.4 BV.
In the process of extracting uranium by the ion exchange method, acidity has large influence on adsorption and elution, and in the process of replacing residual aqueous solution in saturated resin, the change amplitude of the acidity of the solution is large, and the acidity in the early stage of solution replacement is too low, so that elution is hindered, an adsorption phenomenon occurs, and elution is influenced; the acidity of the leaching solution is increased rapidly in the later stage of solution replacement, so that the acidity of the leaching solution is increased rapidly, and the tail solution control in the adsorption process is influenced, so that the acidity is controlled to be less than or equal to 20g/l, and the adsorption and leaching processes are not influenced.
In the process of extracting uranium by using the ion exchange method, the uranium concentration in the leaching barren solution is high, the leaching efficiency of each leaching tower in the reaction leaching process is high, the lower the uranium concentration in the barren solution is, the better the leaching effect is, and the more thorough the resin desorption is, so that when the uranium concentration is controlled to be less than or equal to 100mg/l, the residual uranium in the barren resin meets the requirements of adsorption control parameters.
In the process of extracting uranium by the ion exchange method, after desorption by the ion exchange tower 9, the residual uranium in the lean resin is less than or equal to 500 mg/l.
Practice shows that after the qualified liquid is filled in the tower, the uranium concentration of the leached qualified liquid can be improved by 25 percent, only a small amount of electric power is consumed in the process, and the operation cost is not increased basically.
The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (7)
1. The leaching device for extracting uranium by an ion exchange method is characterized by comprising an ion exchange device, a leaching agent storage pool (11), a qualified leaching liquid storage pool (8), a liquid collecting pool, a leaching agent pump (10), a tower filling pump (7), an exhaust valve (1), an air inlet valve (2), a liquid inlet valve (3) and a tower filling valve (4);
the ion exchange device is respectively connected with an exhaust valve (1), an air inlet valve (2), a liquid inlet valve (3) and a tower filling valve (4) through pipelines; the bottom of the qualified leaching liquid storage tank (8) is connected with the tower filling valve (4) through a pipeline, and the bottom of the leaching agent storage tank (11) is connected with the liquid inlet valve (3) through a pipeline;
the bottom of the ion exchange device is respectively connected with a liquid collecting tank and a top pipeline of a storage tank (8) for the qualified leached liquid, a tail liquid discharge valve (5) is arranged on a pipeline connecting the bottom of the ion exchange device with the liquid collecting tank, and a discharge valve (6) for the qualified leached liquid is arranged on a pipeline connecting the bottom of the ion exchange device with the top of the storage tank (8) for the qualified leached liquid.
2. The leaching device for extracting uranium by an ion exchange method according to claim 1, wherein an outlet at the bottom of the qualified leaching liquid storage tank (8) is connected with an inlet of a packed tower pump (7) through a pipeline, and an outlet of the packed tower pump (7) is connected with a pipeline of a packed tower valve (4); the outlet pipeline at the bottom of the eluent storage tank (11) is connected with the inlet of an eluent pump (10), and the outlet of the eluent pump (10) is connected with the pipeline of the liquid inlet valve (3).
3. The leaching device for extracting uranium by ion exchange method according to claim 1, wherein an air inlet valve (2) on the ion exchange device is connected with a compressed air storage tank, and an air outlet valve (1) on the ion exchange device is communicated with the atmosphere.
4. The elution device for extracting uranium by an ion exchange method according to claim 1, wherein the ion exchange device is formed by connecting a plurality of ion exchange towers (9) in series, the top of each ion exchange tower (9) is respectively connected with an exhaust valve (1), an air inlet valve (2), a liquid inlet valve (3) and a tower filling valve (4) through pipelines, and the liquid inlet valve (3) on each ion exchange tower (9) is connected with the bottom of the other ion exchange tower (9) through a pipeline; the bottom of the qualified leaching solution storage tank (8) is connected with a tower filling valve (4) on each ion exchange tower (9) through a pipeline, and the bottom of the leaching agent storage tank (11) is connected with a liquid inlet valve (3) on each ion exchange tower (9) through a pipeline; the bottom of each ion exchange tower (9) is respectively connected with a liquid collecting tank and a pipeline at the top of a qualified liquid storage tank (8) for leaching, and a tail liquid discharge valve (5) is arranged on a pipeline at the bottom of each ion exchange tower (9) connected with the liquid collecting tank; a qualified elution liquid discharge valve (6) is arranged on a pipeline connecting the bottom of each ion exchange tower (9) and the top of the qualified elution liquid storage tank (8).
5. The elution device for uranium extraction by ion exchange method according to claim 4, wherein an outlet at the bottom of the eluted qualified liquid storage tank (8) is connected with an inlet of a packed tower pump (7) through a pipeline, and an outlet of the packed tower pump (7) is connected with a packed tower valve (4) on each ion exchange tower (9) through a pipeline; an outlet pipeline at the bottom of the eluent storage tank (11) is connected with an inlet of an eluent pump (10), and an outlet of the eluent pump (10) is connected with a pipeline of a liquid inlet valve (3) on each ion exchange tower (9).
6. The elution device for uranium extraction by ion exchange according to claim 4, wherein the air inlet valve (2) on each ion exchange column (9) is connected to a compressed air storage tank pipeline.
7. The elution device for uranium extraction by ion exchange according to claim 4, wherein the ion exchange device is formed by at least 3 ion exchange towers (9) connected in series, and the ion exchange towers (9) are fixed bed ion exchange towers (9).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123077692.4U CN217042621U (en) | 2021-12-09 | 2021-12-09 | Ion exchange method is carried uranium and is used leaching device |
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| CN202123077692.4U CN217042621U (en) | 2021-12-09 | 2021-12-09 | Ion exchange method is carried uranium and is used leaching device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114192195A (en) * | 2021-12-09 | 2022-03-18 | 中核内蒙古矿业有限公司 | Elution device for uranium extraction by ion exchange method and elution method of ion exchange resin |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114192195A (en) * | 2021-12-09 | 2022-03-18 | 中核内蒙古矿业有限公司 | Elution device for uranium extraction by ion exchange method and elution method of ion exchange resin |
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