A portable bag-type electric leaching device and method for muddy sandstone uranium ore

Abstract

The present invention relates to the field of mining technology, and discloses a portable bag-type electric leaching device and method for mudstone uranium ore, characterized in that it comprises: a leaching bag; wherein the inner wall of the leaching bag is attached with a conductive net, an electrode conductive leakage screen cylinder is provided at the center of the leaching bag, and a slag discharge port is provided at the bottom of the leaching bag through a threaded cover; a positive electrode connector and a negative electrode connector, wherein the positive electrode connector is connected to the bag wall outside the leaching bag, and the negative electrode connector is connected to the electrode conductive leakage screen cylinder; a DC power supply is connected to the positive electrode connector and the negative electrode connector. The present invention uses HCl+FeCl3 to activate the leaching agent, which not only reduces the amount of leaching agent used, but also can make the uranium element in the ore pulp only UO2 2+ and UO2Cl + In the form of cations, the uranium-containing cations can be directed to migrate and leach toward the negative electrode, and only one electrode is used to collect the leachate, which reduces costs and improves the uranium collection rate.

Description

Technical Field

[0001] The present invention relates to the field of mining technology, in particular to a portable bag-type electric leaching device and method for muddy sandstone uranium ore. Background Art

[0002] The primary carriers of uranium mineralization in uranium deposits are dark mudstone and siltstone, which have poor permeability. The Nuhetin deposit's aquifer reportedly has a permeability coefficient of 0.0012–0.5 m / d and a water inflow rate of 0.216–50 t / d. These extremely low permeability and weak water-rich properties make the deposit unsuitable for in-situ leaching.

[0003] Therefore, it is necessary to design a portable bag-type device and method for leaching argillaceous sandstone uranium ore with strong practicality. Summary of the Invention

[0004] The object of the present invention is to provide a portable bag-type electric leaching device and method for muddy sandstone uranium ore to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a portable bag-type electric leaching device for muddy sandstone uranium ore, comprising: a leaching bag; wherein, the inner wall of the leaching bag is attached with a conductive mesh, an electrode conductive leakage screen cylinder is provided at the center of the leaching bag, and a slag discharge port is provided at the bottom of the leaching bag sealed by a threaded cover; a positive electrode connector and a negative electrode connector, wherein the positive electrode connector is connected to the bag wall outside the leaching bag, and the negative electrode connector is connected to the electrode conductive leakage screen cylinder at the center; a hopper for muddy sandstone uranium ore slurry and activated leaching agent, which is connected to the opening above the leaching bag; a leachate collection pipe, which is connected to the bottom of the electrode conductive leakage screen cylinder; and an alternating current source, which is connected to the positive electrode connector and the negative electrode connector.

[0006] According to the above technical solution, the extraction bag is a cubic bag structure of 1m×1m×1m, and the center of the extraction bag is a hollow mesh cylinder.

[0007] According to the above technical solution, a feeding hopper grid is installed at the bottom of the argillaceous sandstone uranium slurry and activated leaching agent feeding hopper.

[0008] According to the above technical solution, a leachate collecting pipe valve is provided in the leachate collecting pipe.

[0009] In addition to the above technical solutions, the present invention also includes: a portable bag-type electric leaching method for muddy sandstone uranium ore, comprising the following steps:

[0010] S1: Putting muddy sandstone uranium slurry and HCl and FeCl3 activated leaching agent into the leaching bag;

[0011] S2: Connect the positive electrode connector, the negative electrode connector, and the power supply to activate the uranium element to form UO2 2+ or UO2Cl + Positively charged particles, under the action of the DC electric field, move and accumulate toward the negative electrode made of the mesh cylinder;

[0012] S3: After 1 hour of leaching, the valve of the leachate collection tube is opened to collect the uranium-containing leachate.

[0013] According to the above technical solution, the amount of HCl is 0.009L.

[0014] According to the above technical solution, the FeCl3 is 650g.

[0015] According to the above technical solution, the argillaceous sandstone uranium slurry is 1m 3 .

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The device of the present invention is suitable when the demand for on-site mud sandstone uranium ore treatment is large. Multiple portable bag-type electric leaching devices for mud sandstone uranium ore can be used in parallel to improve treatment efficiency.

[0018] 2. The device of the present invention is easy to transport and can be used for on-site extraction of muddy sandstone uranium ore with a relatively high water content and a relatively small mining volume that requires relocation treatment. It can also be easily circulated and recycled in multiple locations, thereby reducing costs.

[0019] 3. The present invention uses HCl+FeCl3 to activate the leaching agent, which not only reduces the amount of leaching agent used, but also can make the uranium element in the slurry only UO2 2+ and UO2Cl + In the form of cations, the uranium-containing cations can be directed to migrate and leach toward the negative electrode, and only one electrode is used to collect the leachate, which reduces the cost and improves the uranium collection rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 This is a schematic front view of a portable bag-type electric leaching device for argillaceous sandstone uranium ore according to the present invention;

[0022] Figure 2 The diagram is a top view of a portable bag-type electric leaching device for argillaceous sandstone uranium ore according to the present invention.

[0023] Figure 1: leaching bag; 2: conductive electrode screen; 3: positive electrode connector; 4: negative electrode connector; 5: hopper for argillaceous sandstone uranium slurry and activated leaching agent; 6: leachate collection pipe; 7: valve for leachate collection pipe; 8: slag discharge port; 9: DC power supply; 10: hopper grid. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1~Figure 2 The present invention provides a technical solution: a portable bag-type electric leaching device for muddy sandstone uranium ore, comprising:

[0026] The extraction bag 1 is a cubic bag structure of 1m×1m×1m, and the center of the extraction bag 1 is a hollow mesh cylinder;

[0027] The inner wall of the leaching bag 1 is provided with a conductive mesh, the center of the leaching bag 1 is provided with an electrode conductive mesh cylinder 2, and the bottom of the leaching bag 1 is sealed with a slag discharge port 8 through a threaded cover;

[0028] The bottom of the electrode conductive leakage screen cylinder 2 is connected to a leachate collecting pipe 6, and a leachate collecting pipe valve 7 is provided in the leachate collecting pipe 6;

[0029] A hopper 5 for feeding argillaceous sandstone uranium ore slurry and activated leaching agent is threadedly provided at the opening above the leaching bag 1, and a feeding hopper grid 10 is installed at the bottom of the hopper 5 for feeding argillaceous sandstone uranium ore slurry and activated leaching agent;

[0030] Positive electrode connector 3 and negative electrode connector 4, the positive electrode connector 3 is connected to the bag wall outside the leaching bag 1, and the negative electrode connector 4 is connected to the electrode conductive leakage screen cylinder 2;

[0031] The DC power supply 9 is connected to the positive electrode terminal 3 and the negative electrode terminal 4 .

[0032] Example 1: A portable bag-type electric leaching method for muddy sandstone uranium ore, comprising the following steps:

[0033] S1: By passing 1m 3 The muddy sandstone uranium ore slurry, 650g HCl and 0.009LFeCl3 activated leaching agent were put into the leaching bag 1, and the pH of the reaction system was acidic;

[0034] S2: The DC power supply 9 is connected to the positive electrode connector 3 and the negative electrode connector 4. The power is turned on and a DC electric field with a voltage gradient of 4 V / cm is applied to the muddy sandstone uranium slurry in the leaching bag 1. The uranium element is activated to form UO2 2+ or UO2Cl + Positively charged particles, which are directed towards the electrode conductive leakage filter 2 connected to the negative electrode connector 4 under the action of the DC electric field;

[0035] S3: After 1 hour of leaching, the leaching solution collecting pipe valve 7 in the leaching solution collecting pipe 6 is opened to collect the uranium-containing leaching solution.

[0036] Example 2: A portable bag-type electric leaching method for muddy sandstone uranium ore, comprising the following steps:

[0037] S1: Process 10m at a time 3 Argillaceous sandstone uranium slurry, 10 parts of 1m 3 The muddy sandstone uranium ore slurry, 650g HCl and 0.009LFeCl3 activated leaching agent were put into 10 leaching bags 1 respectively;

[0038] S2: Connect the positive electrode connector 3 and the negative electrode connector 4 of the ten leaching bags 1 to the DC power supply 9 respectively. Simultaneously, a DC electric field with a voltage gradient of 4 V / cm is applied to the muddy sandstone uranium slurry in the ten leaching bags 1. The uranium element in the slurry is converted into UO2 through the action of the activated leaching agent and electro-oxidation. 2+ and UO2Cl + These positively charged particles migrate directionally toward the electrode conductive leakage screen 2 connected to the negative electrode connector 4 under the action of the DC electric field;

[0039] S3: After the ten leaching bags 1 are energized for leaching for 1 hour, the leaching solution collecting pipe valve 7 in the leaching solution collecting pipe 6 is opened to collect the uranium-containing leaching solution.

[0040] In summary, the muddy sandstone uranium slurry and the activated leaching agent enter the leaching bag through the muddy sandstone uranium slurry and activated leaching agent feeding hopper provided with a feeding hopper grid. The feeding hopper grid can intercept large pieces of ore and other impurities with a width of more than 5 cm. The bag wall on the inner side of the leaching bag is attached with a conductive mesh, and the center of the leaching bag is penetrated by a conductive electrode conductive filter cylinder, which can prevent large-sized mineral particles from passing through the uranium ion leachate. At the same time, the leaching bag contains a positive electrode connector and a negative electrode connector. When a DC power supply is connected for electroleaching, the uranium-containing leachate leached from the electrode conductive filter cylinder flows out of the leachate collection pipe by controlling the valve of the leachate collection pipe. After the electroleaching is completed, the remaining slag is discharged from the slag discharge port at the bottom of the leaching bag.

[0041] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A portable bag-type electric leaching device for muddy sandstone uranium ore, characterized by: include: Dip bag (1); The inner wall of the leaching bag (1) is provided with a conductive net, an electrode conductive mesh cylinder (2) is provided at the center of the leaching bag (1), and a slag discharge port (8) is provided at the bottom of the leaching bag (1) through a threaded cover. A positive electrode connector (3) and a negative electrode connector (4), wherein the positive electrode connector (3) is connected to the bag wall outside the leaching bag (1), and the negative electrode connector (4) is connected to the electrode conductive leakage net cylinder (2); A siliceous sandstone uranium ore slurry and an activated leaching agent feeding hopper (5), which is connected to an opening above the leaching bag (1); A leachate collecting pipe (6) is arranged in communication with the bottom of the electrode conductive leakage screen cylinder (2); A DC power supply (9) is connected to the positive electrode connector (3) and the negative electrode connector (4); The activation leaching agent is 0.009L HCl and 650g FeCl3 to activate the formation of UO2 2+ and [UO2Cl] + cations; The DC power supply (9) applies a DC electric field to drive the cations to migrate toward the negative electrode connector (4); The leaching bag (1) is a cubic bag structure of 1m×1m×1m.

2. The portable bag-type electric leaching device for muddy sandstone uranium ore according to claim 1 is characterized in that: The center of the leaching bag (1) is a hollow mesh cylinder.

3. The portable bag-type electric leaching device for muddy sandstone uranium ore according to claim 2, characterized in that: A feeding hopper grid (10) is installed at the bottom of the argillaceous sandstone uranium slurry and activated leaching agent feeding hopper (5).

4. The portable bag-type electric leaching device for argillaceous sandstone uranium ore according to claim 3, characterized in that: A leachate collection pipe valve (7) is provided in the leachate collection pipe (6).

5. A portable bag-type electric leaching method for muddy sandstone uranium ore, characterized by: The portable bag-type electric leaching device for argillaceous sandstone uranium ore according to claim 1 comprises the following steps: S1: putting muddy sandstone uranium slurry and HCl and FeCl3 activated leaching agent into the leaching bag (1); S2: Connect the positive electrode connector (3) and the negative electrode connector (4), turn on the power supply, and the uranium element is activated to form UO2 2+ and [UO2Cl] + The cations move and accumulate toward the negative electrode made of the mesh tube under the action of the DC electric field; S3: After 1 hour of leaching, the leaching solution collecting pipe valve (7) in the leaching solution collecting pipe (6) is opened to collect the uranium-containing leaching solution; The HCl is 0.009 L; The FeCl3 is 650g; The muddy sandstone uranium slurry is 1m 3 .

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