Device for electrochemical ore leaching test of ionic rare earth ore

Abstract

The utility model relates to the technical field of leaching mining, in particular to a device for an electrochemical ore leaching test of ionic rare earth ore, which comprises a frosted glass cover, a transparent reaction barrel and a guide leakage hopper, the frosted glass cover is buckled and clamped with the upper end of the transparent reaction barrel, and the lower end of the transparent reaction barrel is fixedly connected with the dredging hopper; and the top of the frosted glass cover is provided with at least three electrode holes and a liquid injection channel. The transparent reaction barrel is fixedly connected with the dredging hopper, and the top of the transparent reaction barrel is sealed by the frosted glass cover, so that the transparent reaction barrel forms a closed reaction space; moreover, the solid-liquid interface reaction process can be intuitively observed by adopting the transparent reaction barrel, and a reaction reagent can be conveniently added into the transparent reaction barrel in the test process by arranging the liquid injection channel at the top of the frosted glass cover; and secondly, an electrode hole is formed in the top of the frosted glass cover, so that the electrochemical test of the ionic rare earth ore can be realized.

Description

Technical Field

[0001] This utility model relates to the field of solution leaching mining technology, and in particular to an apparatus for electrochemical leaching tests of ion-type rare earth ores. Background Technology

[0002] In ion-adsorption rare earth deposits, approximately 90% of rare earth elements are adsorbed onto the surface of clay minerals in cationic form, and their displacement reaction follows an electrochemical mechanism. Currently, conventional leaching test devices generally suffer from the following technical limitations: First, the test devices employ a split structure, resulting in insufficient sealing during chemical reactions and an inability to maintain a stable reaction environment; second, the reaction devices lack observation windows, making it difficult to observe the solid-liquid interface reaction process in real time.

[0003] Therefore, overcoming the shortcomings of the existing technology is an urgent problem to be solved in this technical field. Utility Model Content

[0004] The technical problem this invention aims to solve is the insufficient airtightness and lack of observation windows in existing leaching test devices.

[0005] The present invention adopts the following technical solution:

[0006] On the one hand, an apparatus for electrochemical leaching tests of ion-adsorption rare earth ores is provided, comprising: a frosted glass cover 1, a transparent reaction barrel 2, and a guide funnel 3; the frosted glass cover 1 is fastened and snapped onto the upper end of the transparent reaction barrel 2, and the lower end of the transparent reaction barrel 2 is fixedly connected to the guide funnel 3.

[0007] The top of the frosted glass cover 1 is provided with at least three electrode holes 10 and a liquid injection channel 11. The at least three electrode holes 10 are used to insert external electrodes into the transparent reaction vessel 2, and the liquid injection channel 11 is used to inject reaction reagents into the transparent reaction vessel 2.

[0008] Preferably, the lower surface of the frosted glass cover 1 is provided with a sealing annular protrusion 12, the side surface of the sealing annular protrusion 12 abuts against the inner wall of the transparent reaction barrel 2 to seal the transparent reaction barrel 2, and the diameter of the sealing annular protrusion 12 matches the inner diameter of the transparent reaction barrel 2.

[0009] Preferably, the sealing annular protrusion 12 uses a ground joint sealing method with a taper of 1:10, 1:15 or 1:20 to seal the transparent reaction vessel 2.

[0010] Preferably, the top of the transparent reaction tank 2 is provided with a fixed annular protrusion 20, which protrudes from the main body of the transparent reaction tank 2 and is used to place the device on the iron frame.

[0011] Preferably, the transparent reaction vessel 2 has a main body diameter of 200mm±1mm, a height of 300mm±1mm, and a wall thickness of 5mm±0.5mm.

[0012] Preferably, the transparent reaction vessel 2 has scale markings 21 on its side wall.

[0013] Preferably, the guide funnel 3 is provided with a filter pad 30, and the filter pad 30 is provided with an array of permeable holes 300, the diameter of the permeable holes 300 being 0.3mm±0.01mm;

[0014] The filter pad 30 has a porosity of 35%-40% and can withstand an axial pressure of ≥50kPa.

[0015] Preferably, the cone angle of the guide funnel 3 is 60°±5°, and the outlet pipe diameter is 20mm±1mm.

[0016] Preferably, the at least three electrode holes 10 include a reference electrode hole, a counter electrode hole, and a working electrode hole, and the reference electrode hole, the counter electrode hole, and the working electrode hole are arranged at 120° intervals from each other on the top of the frosted glass cover 1.

[0017] Preferably, the liquid injection channel 11 is made of polytetrafluoroethylene and has a diameter of 8mm ± 0.5mm.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: by fixing the transparent reaction barrel 2 and the guide funnel 3 together, and by sealing the top of the transparent reaction barrel 2 with a frosted glass cover 1, the transparent reaction barrel 2 forms a closed reaction space, overcoming the problem of insufficient sealing of the test device in the prior art during the reaction; furthermore, the transparent reaction barrel 2 allows for direct observation of the solid-liquid interface reaction process, and by setting a liquid injection channel 11 on the top of the frosted glass cover 1, it is convenient to add reaction reagents into the transparent reaction barrel 2 during the test; secondly, by setting an electrode hole 10 on the top of the frosted glass cover 1, electrochemical tests of ion-type rare earth minerals can be realized. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly described below. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0020] Figure 1This is a schematic diagram of the overall structure of an apparatus for electrochemical leaching tests of ion-type rare earth ores provided in an embodiment of this utility model;

[0021] Figure 2 This is an exploded schematic diagram of an apparatus for electrochemical leaching tests of ion-type rare earth ores provided in an embodiment of this utility model;

[0022] Figure 3 This is a schematic diagram of an apparatus for electrochemical leaching tests of ion-type rare earth ores, provided in an embodiment of this utility model, placed on an iron stand. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted as openly inclusive, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples; that is, although they may be incorporated into embodiments or examples using the above terms for reasons such as order and position, it does not limit them to be incorporated in combination by a single embodiment or example.

[0025] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0026] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more. Furthermore, for example, the description may use the prefix "A" or "B" to describe the same type of nouns as two independent entities. In this case, the features defined with "A" and "B" are used only to distinguish between similar entities and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0027] In describing some embodiments, the terms "coupled," "coupled," and "connected," and their derivative expressions, may be used. For example, the term "connected" may be used in describing some embodiments to indicate that two or more components have direct physical or electrical contact with each other. Similarly, the term "coupled" may be used in describing some embodiments to indicate that two or more components have direct physical or electrical contact. However, the terms "connected" or "coupled" may also refer to two or more components that do not have direct contact with each other but still cooperate or interact with each other, such as "optical coupling" or "wireless connection." The embodiments disclosed herein are not necessarily limited to the scope of this invention.

[0028] In the description of this utility model, the expression "A and / or B" (where A and B are used to formally represent specific features) will be involved. The corresponding expression includes the following three combinations: only A, only B, and a combination of A and B.

[0029] As used in this invention, “about,” “approximately,” or “approximately” includes the stated value and the average value within an acceptable range of deviation from the specified value, wherein the acceptable range of deviation is determined by a person skilled in the art taking into account the measurement under discussion and the error associated with the measurement of the specified quantity (i.e., the limitations of the measurement system).

[0030] Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0031] Example 1:

[0032] Embodiment 1 of this utility model provides an apparatus for electrochemical leaching tests of ion-adsorption rare earth ores, such as... Figure 1As shown, the reaction vessel includes: a frosted glass cover 1, a transparent reaction vessel 2, and a drainage funnel 3. The frosted glass cover 1 is snapped into the upper end of the transparent reaction vessel 2, and the lower end of the transparent reaction vessel 2 is fixedly connected to the drainage funnel 3. The top of the frosted glass cover 1 is provided with at least three electrode holes 10 and a liquid injection channel 11. The at least three electrode holes 10 are used to insert external electrodes into the transparent reaction vessel 2, and the liquid injection channel 11 is used to inject reaction reagents into the transparent reaction vessel 2. The liquid injection channel 11 is made of polytetrafluoroethylene and has a diameter of 8 mm ± 0.5 mm.

[0033] By fixing the transparent reaction barrel 2 and the guide funnel 3 together, and by sealing the top of the transparent reaction barrel 2 with a frosted glass cover 1, the transparent reaction barrel 2 forms a closed reaction space, overcoming the problem of insufficient sealing of the test device in the prior art during the reaction. Furthermore, the transparent reaction barrel 2 allows for direct observation of the solid-liquid interface reaction process, and the liquid injection channel 11 on the top of the frosted glass cover 1 facilitates the addition of reaction reagents into the transparent reaction barrel 2 during the experiment. In addition, by setting an electrode hole 10 on the top of the frosted glass cover 1, electrochemical tests of ion-adsorption rare earth minerals can be realized.

[0034] Based on the solutions provided above, the following section will further elaborate on each of the above structures.

[0035] In electrochemical leaching tests of ion-adsorption rare earth ores, the test environment needs to be kept sealed to ensure the stability of the test environment and the accuracy of the experimental results. Therefore, to achieve this effect, such as... Figure 2 As shown, the lower surface of the frosted glass cover 1 is provided with a sealing annular protrusion 12. The side surface of the sealing annular protrusion 12 abuts against the inner wall of the transparent reaction vessel 2 to seal the transparent reaction vessel 2. The diameter of the sealing annular protrusion 12 matches the inner diameter of the transparent reaction vessel 2. To ensure the sealing effect of the sealing annular protrusion 12 on the transparent reaction vessel 2, a ground joint seal with a taper of 1:10, 1:15, or 1:20 is used. The advantage of using a ground joint seal is that the tapered design of the ground joint seal surface allows the contact surface between the cover and the container to form a linear seal when tightened. Axial pressure ensures a tight seal, preventing leakage.

[0036] In the experiment, the entire device needs to be placed suspended on an iron stand so that the liquid collected by the guide funnel 3 can drip into containers such as beakers. Therefore, a fixing annular protrusion 20 is provided on the top of the transparent reaction vessel 2. This fixing annular protrusion 20 protrudes from the main body of the transparent reaction vessel 2 and is used to place the device on the iron stand. (See reference...) Figure 3The diagram shown is a schematic of the device placed on an iron stand.

[0037] The outer diameter of the fixed annular protrusion 20 is larger than the diameter of the transparent reaction tank 2. The main body diameter of the transparent reaction tank 2 is 200mm±1mm, the height is 300mm±1mm, and the wall thickness is 5mm±0.5mm.

[0038] In order to accurately observe the dosage of reagents added to the transparent reaction vessel 2 and the change in liquid volume during the experiment, scale markings 21 are provided on the side wall of the transparent reaction vessel 2.

[0039] During the experiment, in order to allow the liquid in the transparent reaction vessel 2 to flow out through the guide funnel 3 while ensuring that solid matter does not clog the guide funnel 3, a filter pad 30 is provided on the guide funnel 3. The filter pad 30 has an array of permeable holes 300 with a pore diameter of 0.3mm ± 0.01mm. The porosity of the filter pad 30 is 35%-40%, and it can withstand an axial pressure ≥ 50kPa. Furthermore, the cone angle of the guide funnel 3 is 60° ± 5°, and the outlet pipe diameter is 20mm ± 1mm.

[0040] To enable the electrochemical testing function of the device, electrode holes 10 are provided on the top of the frosted glass cover 1. These at least three electrode holes 10 include a reference electrode hole, a platinum wire counter electrode hole, and a working electrode hole. The reference electrode hole, the platinum wire counter electrode hole, and the working electrode hole are arranged at 120° intervals from each other on the top of the frosted glass cover 1. The aperture tolerance of the reference electrode hole, the counter electrode hole, and the working electrode hole is H7 / g6. In one embodiment, the reference electrode hole can be an Ag / AgCl reference electrode hole, and the counter electrode hole can be a platinum wire counter electrode hole. The aperture tolerance H7 / g6 can be explained as follows: H7 represents the basic deviation code (H represents the reference hole) and tolerance grade (7-level accuracy) of the hole. Its tolerance zone has a lower deviation of zero, and the upper deviation is determined by the basic size. For example, for a hole with a diameter of 60 mm, the tolerance range of H7 is 60 mm to 60.025 mm (the specific value needs to be determined by referring to a table based on the basic size). g6 indicates the basic deviation code (g indicates clearance fit tendency) and tolerance grade (6-level accuracy) of the shaft. Its tolerance zone is located below the reference hole, with an upper deviation of 0mm and a lower deviation that is negative (the specific values ​​need to be determined by referring to the table based on the basic size and tolerance grade).

[0041] Specifically, the Ag / AgCl reference electrode orifice is used to supply an Ag / AgCl reference electrode to provide a stable potential reference point, ensuring the accuracy and stability of the potential in electrochemical measurements. The reason for using an Ag / AgCl reference electrode is that its potential is stable and repeatable, suitable for various electrolyte solutions. During electrochemical leaching, the potential change of the working electrode can be accurately measured through the reference electrode, thereby controlling the reaction conditions.

[0042] The platinum wire electrode hole is used for the insertion of an auxiliary electrode to complete the circuit loop, allowing current to pass through the electrolyte solution. In an electrochemical system, the electrode is typically an inert electrode (such as the platinum wire used in this embodiment), which does not participate in the electrochemical reaction but provides a path for electrons to flow in or out, thereby maintaining current stability.

[0043] The working electrode aperture is the main site of electrochemical reactions and is used to study the electrochemical behavior of ion-adsorption rare earth minerals. The working electrode aperture is used to insert a working electrode, which is typically made of the material under study (such as the electrode of the ion-adsorption rare earth mineral in this embodiment). In electrochemical testing, by applying a potential or current, the reaction process on the electrode surface is observed to study the electrochemical dissolution, migration, and deposition behavior of rare earth ions, and to evaluate leaching efficiency and selectivity.

[0044] The purpose of arranging the three electrode holes 10 evenly in a 120° circle is to ensure the uniform spatial distribution of the electrodes, reduce the influence of electric field or concentration gradient caused by uneven electrode positions, and at the same time help to improve the symmetry of the electrochemical reaction, reduce edge effects, and make the experimental results more reliable.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for electrochemical leaching test of ion-type rare earth ore, characterized in that, include: A frosted glass cover (1), a transparent reaction vessel (2), and a drainage funnel (3); the frosted glass cover (1) is fastened to the upper end of the transparent reaction vessel (2), and the lower end of the transparent reaction vessel (2) is fixedly connected to the drainage funnel (3); The top of the frosted glass cover (1) is provided with at least three electrode holes (10) and a liquid injection channel (11). The at least three electrode holes (10) are used to insert external electrodes into the transparent reaction vessel (2), and the liquid injection channel (11) is used to inject reaction reagents into the transparent reaction vessel (2).

2. The device for electrochemical leaching test of ion-type rare earth ore according to claim 1, characterized in that, The lower surface of the frosted glass cover (1) is provided with a sealing annular protrusion (12). The side surface of the sealing annular protrusion (12) abuts against the inner wall of the transparent reaction barrel (2) to seal the transparent reaction barrel (2). The diameter of the sealing annular protrusion (12) matches the inner diameter of the transparent reaction barrel (2).

3. The apparatus for electrochemical leaching test of ion-type rare earth ore according to claim 2, characterized in that, The sealing annular protrusion (12) uses a ground joint sealing method with a taper of 1:10, 1:15 or 1:20 to seal the transparent reaction vessel (2).

4. The apparatus for electrochemical leaching test of ion-type rare earth ore according to claim 1, characterized in that, The top of the transparent reaction tank (2) is provided with a fixed annular protrusion (20), which protrudes from the main body of the transparent reaction tank (2) and is used to place the device on the iron frame.

5. The apparatus for electrochemical leaching test of ion-type rare earth ore according to claim 1, characterized in that, The transparent reaction vessel (2) has a main body diameter of 200mm±1mm, a height of 300mm±1mm, and a wall thickness of 5mm±0.5mm.

6. The apparatus for electrochemical leaching test of ion-type rare earth ore according to claim 1, characterized in that, The transparent reaction vessel (2) has graduation marking lines (21) on its side wall.

7. The apparatus for electrochemical leaching test of ion-type rare earth ore according to claim 1, characterized in that, The guide funnel (3) is provided with a filter pad (30), and the filter pad (30) is provided with an array of permeable holes (300), the diameter of the permeable holes (300) being 0.3mm±0.01mm; The porosity of the filter liner (30) is 35%-40%, and the axial pressure it can withstand is ≥50kPa.

8. The apparatus for electrochemical leaching test of ion-type rare earth ore according to claim 1, characterized in that, The cone angle of the guide funnel (3) is 60°±5° and the outlet pipe diameter is 20mm±1mm.

9. The apparatus for electrochemical leaching test of ion-type rare earth ore according to claim 1, characterized in that, The at least three electrode holes (10) include a reference electrode hole, a counter electrode hole and a working electrode hole, which are arranged at 120° intervals from each other on the top of the frosted glass cover (1).

10. The apparatus for electrochemical leaching test of ion-type rare earth ore according to claim 1, characterized in that, The liquid injection channel (11) is made of polytetrafluoroethylene and has a diameter of 8mm ± 0.5mm.

Images