Rare earth extracting and clarifying device

Abstract

The utility model provides a rare earth extraction and clarification device, and belongs to the field of rare earth feed liquid extraction and clarification. The rare earth extracting and clarifying device comprises multiple stages of tank bodies which are connected in series, wherein each tank body comprises a mixing chamber and a clarifying chamber which are communicated with each other; an inclined plate clarifying assembly is arranged in the clarifying chamber, the inclined plate clarifying assembly is formed by sequentially overlapping a plurality of bent inclined plates, the tops and the bottoms of the bent inclined plates are of plane structures, and every two adjacent tops and bottoms are connected through an inclined part, so that the bent inclined plates form linear grooves which are formed in parallel; the tops and the bottoms of every two adjacent bent inclined plates are bonded and stacked, and the linear grooves in every two adjacent bent inclined plates are arranged in a non-parallel mode so as to form a honeycomb-shaped inclined plate flow guide chamber. By means of the extraction clarifier, the defects that an existing extraction clarifier can only guide flow in a one-way mode to enable the flow directions of a light phase and a heavy phase to be consistent, and can only slow down the fluid speed but cannot solve the problem that the phase splitting effect is poor can be overcome.

Description

Technical Field

[0001] The utility model belongs to the technical field of rare earth liquor extraction clarification, and particularly relates to a rare earth extraction clarification device. Background Art

[0002] The rare earth extraction process mainly utilizes the property that the extraction organic phase and the rare earth liquor are immiscible with each other. Conventionally, a box-type cascade extraction tank formed by connecting multiple single-stage extraction tanks in series is used for extraction. The single-stage extraction tank mainly consists of a mixing chamber and a clarification chamber. After the rare earth liquor and the extractant are fully mixed in the mixing chamber, they flow into the clarification chamber. In the static box, the light-phase organic phase is concentrated in the upper layer of the clarification tank, and the heavy-phase rare earth liquor is distributed in the lower layer of the clarification tank, achieving the separation effect. During the extraction and clarification process, the phase separation effect is mainly affected by temperature, the density of the rare earth liquor, the flow rate ratio of the materials, and the volume of the box-type clarification chamber. Under the same temperature and density of the rare earth liquor, the slower the flow rate of the materials and the larger the volume of the box-type clarification chamber, the better the phase separation effect. However, a slower flow rate means a decrease in production, and increasing the volume of the box-type clarification chamber will increase the manufacturing cost and the amount of rare earth in the tank, invisibly increasing the investment.

[0003] Based on the drawbacks of the above-mentioned box-type cascade extraction tank, the rare earth extraction and clarification effect can be improved by improving the existing technical means. For example, an extraction clarifier with the patent number ZL201120499593.2. The clarification chamber of this solution is divided into several short clarification compartments by several partitions, which is equivalent to many small clarifiers; a baffle is added at the entrance where the mixed phase enters the clarification chamber to slow down the flow rate of the materials and improve the phase separation efficiency. However, this extraction clarifier has the following defects: the baffle can only conduct fluid in one direction, making the light phase and the heavy phase flow in the same direction. It can only be used as a buffer plate to slow down the fluid velocity and cannot effectively solve the drawback of poor phase separation effect. Summary of the Utility Model

[0004] In order to solve at least one of the above technical problems, the utility model provides a rare earth extraction clarification device, which can not only eliminate eddy currents and slow down the fluid velocity, but also enable the light phase and the heavy phase to flow along different diversion directions and achieve complete phase separation after multiple diversions.

[0005] This application provides a rare earth extraction clarification device, which includes a multi-stage tank body connected in series. The tank body includes a mixing chamber and a clarification chamber that communicate with each other. The clarification chamber is provided with a heavy phase outlet and a light phase outlet. The light phase outlet of the upper stage communicates with the mixing chamber of the lower stage, and the heavy phase outlet of the lower stage communicates with the mixing chamber of the upper stage. An inclined plate clarification assembly is arranged in the clarification chamber. The inclined plate clarification assembly is formed by sequentially stacking a number of bent inclined plates. The top and bottom of the bent inclined plates are both flat structures, and the top and the bottom adjacent to each other are connected by an inclined part, so that the bent inclined plates form linearly arranged grooves parallel to each other. The top and bottom of two adjacent bent inclined plates are adhesively stacked, and the linearly arranged grooves on two adjacent bent inclined plates are arranged non-parallel to each other to form a honeycomb-shaped inclined plate diversion chamber.

[0006] Compared with the prior art, the beneficial effects of the present utility model are as follows: By arranging an inclined plate clarification assembly formed by sequentially stacking a number of bent inclined plates in the clarification chamber, the top and bottom of the bent inclined plates with flat structures are connected by an inclined part to form linearly arranged grooves parallel to each other. The top and bottom of two adjacent bent inclined plates are adhesively stacked, and the linearly arranged grooves on two adjacent bent inclined plates are arranged non-parallel to each other to form a honeycomb-shaped inclined plate diversion chamber. After the rare earth liquid is mixed and flows into the clarification chamber, the eddy current can be eliminated and the fluid velocity can be slowed down through the inclined plate clarification assembly, and the light phase and the heavy phase can flow along different diversion directions through the honeycomb-shaped inclined plate diversion chamber, and after multiple diversions, the light phase and the heavy phase are completely separated.

[0007] Preferably, the bending angles formed by the inclined parts and their adjacent top and bottom respectively are both in the range of 90° to 160°.

[0008] Preferably, the mixing chamber and the clarification chamber in the same-stage tank body are separated by a baffle and a flow baffle, and the baffle and the flow baffle are arranged in parallel.

[0009] Preferably, the baffle and the flow baffle are arranged in sequence along the flow direction of the rare earth liquid. The baffle extends from the bottom of the tank body, and the flow baffle extends from the top of the tank body. The heights of the baffle and the flow baffle are both less than the depth of the tank body.

[0010] Preferably, the projections of the baffle and the flow baffle on the side wall of the tank body partially overlap.

[0011] Preferably, the bent inclined plate is arranged in parallel with the flow baffle and is perpendicular to the bottom of the clarification chamber; the inclined plate clarification assembly is located in the middle of the clarification chamber and is arranged with a gap from the side wall of the clarification chamber.

[0012] Preferably, a light phase overflow plate is arranged in the clarification chamber, and the height of the light phase overflow plate is set to be equal to the height of the light phase outlet.

[0013] Preferably, a sub-chamber is provided at the bottom of the mixing chamber.

[0014] Preferably, the bent inclined plate is made of a thin fiberglass plate.

[0015] Preferably, the included angle range between the linear grooves on two adjacent bent inclined plates is 45° to 90°. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a plan view of the rare earth extraction clarification device provided in Embodiment 1 of the present invention;

[0018] Figure 2 For Figure 1 a cross-sectional view taken along the A-A section line in

[0019] Figure 3 It is a side view of the inclined plate clarification assembly provided in Embodiment 1 of the present invention;

[0020] Figure 4 It is an assembly schematic diagram of the inclined plate clarification assembly provided in Embodiment 1 of the present invention;

[0021] Figure 5 It is an exploded schematic diagram of the inclined plate clarification assembly provided in Embodiment 1 of the present invention.

[0022] Description of the reference numerals:

[0023] 10 - tank body, 11 - baffle plate, 12 - baffle;

[0024] 20 - mixing chamber, 21 - sub-chamber;

[0025] 30 - clarification chamber, 31 - heavy phase outlet, 32 - light phase outlet, 33 - light phase overflow plate;

[0026] 40 - inclined plate clarification assembly, 41 - bent inclined plate, 411 - top, 412 - bottom, 413 - inclined part, 414 - linear groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the embodiments of the present utility model, and should not be construed as limiting the present utility model.

[0028] In the description of the embodiments of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0029] In the embodiments of the present utility model, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific situations.

[0030] Embodiment 1

[0031] As Figure 1 shown, this embodiment provides a rare earth extraction clarification device, which includes a multi-stage tank body 10 connected in series. Among them, each stage of the tank body 10 includes a mixing chamber 20 and a clarification chamber 30 that communicate with each other, and the clarification chamber 30 is provided with a heavy phase outlet 31 and a light phase outlet 32. In specific practice, the tank body 10 is designed in a rectangular tank structure by bricklaying, and the tank opening is usually covered with a cover; along the flow direction of the rare earth liquid, the mixing chamber 20 and the clarification chamber 30 are arranged front and back. In this embodiment, in order to save the overall space occupancy rate of the rare earth extraction clarification device, two adjacent tank bodies 10 are adjacent to each other with their long sides, and the heavy phase outlet 31 and the light phase outlet 32 of the same-stage tank body are respectively arranged on the long sides of the corresponding tank body. In specific practice, the light phase outlet of the upper stage communicates with the mixing chamber of the lower stage, and the heavy phase outlet of the lower stage communicates with the mixing chamber of the upper stage; that is to say, the light phase of the upper stage tank body flows back into the mixing chamber of the lower stage to be remixed and clarified again, and the heavy phase of the lower stage tank body flows back into the mixing chamber of the upper stage to be remixed and clarified again, so as to achieve the purpose of complete separation of the light phase and the heavy phase of the rare earth liquid flowing through the rare earth extraction clarification device.

[0032] Furthermore, a light-phase overflow plate 33 is provided in the clarification chamber 30, and the height of the light-phase overflow plate 33 is set to be equal to the height of the light-phase outlet 32. Specifically, the light-phase overflow plate 33 is designed at the end of the clarification chamber 30 and is formed by opening a notch at the long side of the tank body 10. In specific practice, the function of setting the light-phase overflow plate 33 is to block the heavy phase from flowing into the next-stage tank body, and the blocked heavy phase flows back into the clarification chamber 30 and returns to the previous-stage tank body through the heavy-phase outlet 31.

[0033] As Figure 2 As shown, a sub-chamber 21 is provided at the bottom of the mixing chamber 20. In this embodiment, by designing the sub-chamber 21 at the bottom into a semi-integral structure, such a structure can increase the internal space of the mixing chamber, increase the stirring area in the mixing chamber, improve the stirring efficiency, and thus improve the purification and separation speed. In specific practice, a partition plate can be provided at the bottom of the mixing chamber, and a cover plate is covered on the upper end of the partition plate. The partition plate, the cover plate and one side wall of the mixing chamber enclose a semi-box structure.

[0034] Furthermore, a viewing window can be provided on the side of the mixing chamber 20, and a transparent viewing plate is hermetically embedded in the viewing window. The state of the rare earth liquid fluid can be observed through the transparent viewing plate.

[0035] As Figure 2 As shown, the mixing chamber 20 and the clarification chamber 30 in the same-stage tank body 10 are separated by a baffle 12 and a flow baffle 11, and the baffle 12 and the flow baffle 11 are arranged in sequence along the flowing direction of the rare earth liquid. Specifically, the rare earth liquid fluid in the mixing chamber 20 is in a stirred state after being treated in the sub-chamber, and the flow rate of the fluid can be slowed down through the baffle 12, and the flow rate can be further slowed down through the flow baffle 11. Preferably, the baffle 12 and the flow baffle 11 are arranged in parallel and are connected to the inner wall of the tank body 10, so that the flow rates of the fluid in the mixing chamber 20 and the clarification chamber 30 are inconsistent.

[0036] Even further, the baffle 12 extends from the bottom of the tank body 10, the flow baffle 11 extends from the top of the tank body 10, and the heights of the baffle 12 and the flow baffle 11 are both less than the depth of the tank body 10; and, the projections of the baffle 12 and the flow baffle 11 on the side wall of the tank body 10 partially overlap. Specifically, the settings of the baffle 12 and the flow baffle 11 make the rare earth liquid fluid need to pass through a tortuous fluid channel when flowing from the mixing chamber 20 to the clarification chamber 30. On the one hand, the flow rate of the rare earth liquid fluid in the mixing chamber 20 is slowed down, and partial separation of the light phase and the heavy phase can also be achieved.

[0037] As Figure 2 and Figure 3As shown, a lamella clarifying assembly 40 is provided in the clarifying chamber 30, and the lamella clarifying assembly 40 is formed by sequentially stacking a number of bent lamellas 41. Specifically, the bent lamellas 41 are made by bending a thin fiberglass plate. In specific practice, the bent lamellas stacked to form the lamella clarifying assembly 40 can be bent lamellas of one specification, which can be a rhombic structure or a rectangular structure, and adjacent bent lamellas are stacked in a way that their angles are staggered.

[0038] Furthermore, the bent lamellas 41 are arranged parallel to the baffle 11 and perpendicular to the bottom of the clarifying chamber 30. Preferably, the lamella clarifying assembly 40 is located in the middle of the clarifying chamber 30 and is arranged with a gap from the side wall of the clarifying chamber 30. In specific practice, the lamella clarifying assembly 40 is arranged with a gap from the clarifying chamber 30, and the flow rate of the rare earth liquid in the gap is faster than that of the rare earth liquid in the lamella clarifying assembly 40, which can improve the rare earth liquid in the lamella clarifying assembly 40 and accelerate the separation of the light phase and the heavy phase of the rare earth liquid therein.

[0039] As Figure 4 and Figure 5 As shown, both the top 411 and the bottom 412 of the bent lamella 41 are in a planar structure, and the adjacent top 411 and bottom 412 are connected by an inclined part 413 to form a linearly arranged groove 414 in parallel. In this embodiment, the bending angles formed by the inclined part 413 and its adjacent top 411 and bottom 412 are both in the range of 120°. Preferably, the tops and bottoms of two adjacent bent lamellas 41 are adhesively stacked, and the linearly arranged grooves on two adjacent bent lamellas 41 are arranged non-parallel to form a honeycomb-shaped lamella diversion chamber. In this embodiment, the included angle range between the linearly arranged grooves 414 on two adjacent bent lamellas 41 is 90°. In specific practice, by arranging a lamella clarifying assembly formed by sequentially stacking the bent lamellas with the above structure in the clarifying chamber, a honeycomb-shaped lamella diversion chamber can be formed. When the rare earth liquid mixture flows into the clarifying chamber and passes through the lamella clarifying assembly, eddies can be eliminated, the fluid velocity can be slowed down, and the light phase and the heavy phase can flow along different diversion directions through the honeycomb-shaped lamella diversion chamber. The light-phase organic matter reaches the upper layer of phase separation along the lamellas from bottom to top, and the heavy-phase rare earth liquid reaches the lower layer of phase separation along the lamellas from top to bottom. That is to say, the organic water phase entrainment layer enters the bent lamella diversion at the bending intersection respectively, and after multiple diversions, the light phase and the heavy phase are completely phase-separated.

[0040] Embodiment 2

[0041] The difference between this embodiment and Embodiment 1 is that: the bending angles formed by the inclined part and the adjacent top and bottom respectively are both in the range of 90°, and the included angle between the linear grooves on two adjacent bending inclined plates is in the range of 75°.

[0042] Embodiment 3

[0043] The difference between this embodiment and Embodiment 1 is that: the bending angles formed by the inclined part and the adjacent top and bottom respectively are both in the range of 160°, and the included angle between the linear grooves on two adjacent bending inclined plates is in the range of 45°.

[0044] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A rare earth extraction and clarification device, comprising a multi-stage tank body connected in series, wherein the tank body comprises a mixing chamber and a clarification chamber which are interconnected, wherein the clarification chamber is provided with a heavy phase outlet and a light phase outlet, wherein the light phase outlet of the previous stage is connected to the mixing chamber of the next stage, and the heavy phase outlet of the next stage is connected to the mixing chamber of the previous stage; characterized in that: An inclined plate clarification assembly is provided in the clarification chamber, and the inclined plate clarification assembly is formed by a plurality of bent inclined plates stacked in sequence, the top and bottom of the bent inclined plates are both planar structures, and the tops and bottoms adjacent to each other are connected via inclined parts so that the bent inclined plates form parallel linear grooves; the tops and bottoms of two adjacent bent inclined plates are bonded and stacked, and the linear grooves on the two adjacent bent inclined plates are non-parallel to form a honeycomb-shaped inclined plate guide chamber.

2. The rare earth extraction and clarification device according to claim 1, characterized in that: The bending angles formed by the inclined portion and the adjacent top and bottom portions are both in the range of 90° to 160°.

3. The rare earth extraction and clarification device according to claim 1, characterized in that: The mixing chamber and the clarifying chamber in the tank body of the same level are separated by a baffle and a baffle, and the baffle is arranged in parallel with the baffle.

4. The rare earth extraction and clarification device according to claim 3, characterized in that: The baffle and the baffle are arranged in sequence along the flow direction of the rare earth liquid, the baffle is led out from the bottom of the trough body, and the baffle is led out from the top of the trough body, and the height of the baffle and the baffle are both less than the depth of the trough body.

5. The rare earth extraction and clarification device according to claim 4, characterized in that: The projections of the baffle plate and the baffle plate on the side wall of the trough body partially overlap.

6. The rare earth extraction and clarification device according to claim 3, characterized in that: The bent inclined plate is arranged parallel to the baffle plate and perpendicular to the bottom of the clarification chamber; the inclined plate clarification assembly is located in the middle of the clarification chamber and is arranged with a gap between it and the side wall of the clarification chamber.

7. The rare earth extraction and clarification device according to claim 1, characterized in that: A light phase overflow plate is arranged in the clarification chamber, and the height of the light phase overflow plate is arranged to be equal to the height of the light phase outlet.

8. The rare earth extraction and clarification device according to claim 1, characterized in that: A latent chamber is provided at the bottom of the mixing chamber.

9. The rare earth extraction and clarification device according to claim 1, characterized in that: The bending inclined plate is made of a glass fiber reinforced plastic thin plate.

10. The rare earth extraction and clarification device according to any one of claims 1 to 9, characterized in that: The included angle between the linear grooves on the two adjacent bending inclined plates is in the range of 45° to 90°.

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