Adjustable permeability testing device for in-situ leaching uranium ore reservoir

Abstract

The utility model relates to the technical field of metal ore leaching mining, in particular to an in-situ leaching uranium ore reservoir adjustable permeability testing device which comprises a shading box, a CCD camera is arranged in the shading box and connected with a data processing structure, a containing box is arranged on the side wall of one side of the shading box, the exterior of the shading box is connected with a shading cover, and the shading cover is connected with a data processing structure. And a constant light source is arranged in the light shield, and a leaching liquid bottle, a peristaltic pump, a filtering device, a Y-shaped output pipe, a one-way valve, an electromagnetic valve, a flow control valve, a pneumatic control valve and a leaching liquid collecting bottle structure are utilized, so that the problem that different seepage modes need to be adopted for testing due to the fact that the reservoir of the in-situ leaching uranium mine possibly has different permeability characteristics is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of metal mine leaching and dissolution mining, in particular to a ground leaching uranium deposit reservoir adjustable permeability testing device. BACKGROUND

[0002] Ground leaching uranium mining is a new type of uranium mining method which integrates mining, dressing and smelting, under natural buried conditions, leaching liquid directly enters underground ore-bearing rock layer through drilling, selectively dissolves uranium in the ore through chemical reaction of leaching agent and mineral, and then extracts the formed uranium compound solution in the reaction zone without displacement of the ore or surrounding rock. In the process of low-permeability sandstone type uranium rock mining, studying the change of uranium deposit pore and permeability plays a key role in solving the problem of ore-bearing layer blockage, arranging appropriate ground leaching process parameters, improving the natural production capacity and leaching rate.

[0003] And in the application file with publication number CN214334621U refers to a kind of experimental device for monitoring the porosity and permeability change of ore bed, by first, CCD camera keeps open state until simulation seepage motion ends, and record the light intensity information after passing through containing tank, light intensity information is transmitted to data processing mechanism, that is, based on the principle of light transmission method and using light intensity value to establish fluid saturation model, the direct relationship between light intensity value and fluid saturation is obtained, finally, according to the change of light intensity with time, the space-time evolution law of ore bed porosity and permeability is obtained.Second, the upper and lower sides of the ore sample are covered with quartz sand layer as water boundary, to eliminate the interface effect generated by the upper and lower boundaries of the ore sample during the permeation of lixiviant in the experiment, to ensure the stability of lixiviant transmission process, and to ensure the uniformity of the whole seepage process.Third, the lixiviant spreads evenly from one side of the containing tank to the other side along the direction perpendicular to the light beam, simulates the one-dimensional seepage motion of liquid in uniform porous medium inside the containing tank, and can ensure that the CCD camera fully captures the process of lixiviant gradually infiltrating the whole ore sample.Fourth, the outside of the light-shielded dark box is provided with a constant light source for covering and irradiating the light-transmitting part of the outer side wall, and the inside is provided with a CCD camera for collecting light-transmitting information.The application of CCD camera improves the instantaneity of monitoring time and the high density of monitoring space, that is, the maximum resolution of monitoring time and spatial resolution can be fully reduced, and the change law of ore bed porosity and permeability from time and space can be continuously, directly and detailedly monitored during the research process.Fifth, the light-shielded dark box is provided with a light shield connected to one side of the containing tank, and the containing tank and the constant light source are located in the light shield, to prevent other light sources from entering the light-shielded dark box through the containing tank and affecting the collection of transmitted light by the CCD camera, and to ensure the accuracy of the experiment.Sixth, the side walls of the containing tank opposite to the CCD camera and the constant light source are made of transparent glass, and the transparent glasses are pressed on the ore sample and serve as constant head boundaries respectively, and combined with the matching constant head mechanism, the lixiviant is transmitted stably and continuously, and the stable permeation of the ore sample is ensured, but there are still some defects that need to be optimized, the specific defects are as follows:the reservoir of in-situ leaching uranium mine may have different permeability characteristics, so different seepage modes need to be used for testing, for example, when testing low-permeability reservoir, lower flow rate and higher pressure gradient may be needed, while when testing high-permeability reservoir, higher flow rate and lower pressure gradient can be used.

[0004] Therefore, it is particularly important to design a ground leaching uranium mine reservoir adjustable permeability test device to change the above technical defects and improve the overall practicality. The utility model discloses a kind of ground leaching uranium mine reservoir adjustable permeability test devices, to solve the problems raised in the above background art.

[0005] The utility model aims at providing a kind of ground leaching uranium mine reservoir adjustable permeability test device, to solve the problems raised in the above background art.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of in-situ leaching uranium deposit reservoir adjustable permeability testing device, including light shield box, the inside of the light shield box is equipped with CCD camera, the CCD camera connects data processing structure, the side wall of the light shield box is equipped with containing box, the outside of the light shield box is connected with light shield cover, the inside of the light shield cover is equipped with constant light source;

[0008] The inside of the containing box is equipped with ore sample layer, the top end and the bottom end of the ore sample layer are symmetrically equipped with quartz sand layer, one side of the containing box is equipped with leaching solution bottle, the bottom of the leaching solution bottle is equipped with peristaltic pump, the output end of the peristaltic pump is equipped with filter, the filter Y type output pipe, the outside of the Y type output pipe is equipped with one-way valve, the two ends of the Y type output pipe are respectively equipped with electromagnetic valve, one end of the Y type output pipe is equipped with electric heater, the other end of the Y type output pipe is equipped with refrigerator, the Y type output pipe is connected with infusion tube, the outside of the infusion tube is equipped with flow regulating valve, one side of the flow regulating valve is equipped with pneumatic regulating valve, the outside of the containing box near the bottom is equipped with discharge pipe, the outside of the discharge pipe is equipped with flowmeter, one side of the flowmeter is equipped with electromagnetic control valve, one side of the electromagnetic control valve is equipped with one-way control valve, and the discharge management is dissolved leaching solution collection bottle.

[0009] As the preferred scheme of the utility model, the quartz sand layer is used as water-resisting boundary, the side walls of the containing box opposite to the CCD camera and the constant light source are made of transparent glass, and each transparent glass is pressed on the ore sample layer.

[0010] As the preferred scheme of the utility model, the constant light source includes several groups of equal light intensity lamp strips, each lamp strip is arranged at equal intervals and in parallel, and the vertical distance between each lamp strip and the containing box is equal.

[0011] As the preferred scheme of the utility model, the data processing structure includes image analysis software and permeability calculation module, can automatically receive and process image data photographed by the CCD camera, calculate the permeability key parameters by analyzing the changes of the ore sample layer under the action of leaching solution, improve the accuracy and efficiency of testing, the data processing structure further includes communication interface, can carry out data transmission and communication with external computer or remote server, realize remote monitoring and analysis of test data.

[0012] As the preferred scheme of the utility model, the electric heater and the refrigerator are both equipped with temperature controller, and are both connected with the data processing structure, can receive temperature setting instructions from the data processing structure, the electromagnetic control valve and the one-way control valve are both connected with the data processing structure, can receive control instructions from the data processing structure.

[0013] As the preferred scheme of the utility model, the pumping rate of the peristaltic pump can be remotely regulated through the data processing structure, for realizing the accurate control of the lixivium flow, the filter adopts high-precision filter screen for removing impurities and particles in the lixivium, and the pressure sensor is arranged between the peristaltic pump and the filter.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1、The utility model discloses a kind of ground leaching uranium deposit adjustable permeability testing device, utilize lixivium bottle, peristaltic pump, filter, Y type output pipe, check valve, solenoid valve, flow regulating valve pneumatic regulating valve, lixivium collection bottle structure, device is through peristaltic pump, filter, temperature regulating device (electric heater and refrigerator) and flow regulating valve and pneumatic regulating valve, accurate control and adjustment of lixivium are realized, this ensures that lixivium enters containing box with constant flow, temperature and pressure, to improve the accuracy and stability of test, according to different test conditions and needs, flexibly adjust the flow, temperature and pressure of lixivium Parameter, this makes the device applicable to ground leaching uranium deposit testing of different permeability characteristics, improve the versatility and practicality of test, solve the problem that ground leaching uranium deposit's reservoir can have different permeability characteristics, thus need to adopt different seepage mode to test. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is the structural diagram of whole adjustment seepage mode component of the utility model;

[0017] Fig. 2 It is the schematic diagram of whole test component of the utility model;

[0018] Fig. 3 It is the schematic diagram of containing box component of the utility model.

[0019] In the drawing: 1, light shielding box;101, CCD camera;102, data processing structure;103, light shield;104, constant light source;2, containing box;201, ore sample layer;202, quartz sand layer;203, lixivium bottle;204, peristaltic pump;205, filter;206, Y type output pipe;207, check valve;208, solenoid valve;209, infusion tube;210, flow regulating valve;211, pneumatic regulating valve;212, electric heater;213, refrigerator;3, discharge pipe;301, flowmeter;302, solenoid control valve;303, check control valve;304, lixivium collection bottle. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without any creative work fall within the scope of the present application.

[0021] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Several embodiments of the present application are given. However, the present application can be implemented in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixedly attached" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present. The terms "vertical", "horizontal", "left", "right", and the like as used herein are for purposes of illustration only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0024] Embodiments, please see Figs. 1-3 The present application provides a technical solution:

[0025] The application discloses a kind of in-situ leaching uranium reservoir adjustable permeability testing device, including light-tight box 1, the inside of light-tight box 1 is equipped with CCD camera 101, CCD camera 101 connects data processing structure 102, one side wall of light-tight box 1 is equipped with containing box 2, the outside of light-tight box 1 is connected with light shield 103, the inside of light shield 103 is equipped with constant light source 104, the inside of containing box 2 is equipped with ore sample layer 201, the top end and bottom end of ore sample layer 201 are symmetrically equipped with quartz sand layer 202, one side of containing box 2 is equipped with leaching solution bottle 203, the bottom of leaching solution bottle 203 is equipped with peristaltic pump 204, the output end of peristaltic pump 204 is equipped with filter 205, filter 205 Y type output pipe 206, the outside of Y type output pipe 206 is equipped with one-way valve 207, the two ends of Y type output pipe 206 are respectively equipped with electromagnetic valve 208, one end of Y type output pipe 206 is equipped with electric heater 212, the other end of Y type output pipe 206 is equipped with refrigerator 213, Y type output pipe 206 connects infusion tube 209, the outside of infusion tube 209 is equipped with flow regulating valve 210, one side of flow regulating valve 210 is equipped with pneumatic regulating valve 211, the outside of discharge pipe 3 near the bottom of containing box 2 is equipped with flowmeter 301, one side of flowmeter 301 is equipped with electromagnetic control valve 302, one side of electromagnetic control valve 302 is equipped with one-way control valve 303, discharge pipe 3 understands leaching solution collection bottle 304, by placing the ore sample layer 201 to be tested in the inside of containing box 2, and ensuring that its upper and lower sides are covered with quartz sand layer 202, to form water boundary, eliminate interface effect, guarantee the uniformity of seepage process, then the leaching solution in leaching solution bottle 203 is pumped to filter 205 by peristaltic pump 204 at a set pumping rate, to remove impurities and particles, ensure the purity and consistency of leaching solution, selectively adjust the temperature of electric heater 212 and refrigerator 213, receive and set temperature instructions by data processing structure 102, to meet the temperature requirements under different test conditions, open constant light source 104 in light shield 103, to ensure that light irradiates uniformly and stably on the transparent glass side wall of containing box 2, then start CCD camera 101, keep its open state until the end of simulated seepage movement, CCD camera will record the light intensity information after passing through containing box, and transmit these information to data processing structure 102, the leaching solution is pushed by peristaltic pump 204, and uniformly spreads along the direction perpendicular to light beam from one side of containing box 2 to the other side, simulates one-dimensional seepage movement of liquid in uniform pore medium, data processing structure 102 receives the light intensity information transmitted by CCD camera 101, and obtains the direct relationship between light intensity value and fluid saturation based on the light transmission method principle and the fluid saturation model established by light intensity value, according to the change of light intensity with time, data processing structure 102 will calculate the space-time evolution law of ore bed porosity and permeability, in the test process, flow regulating valve 210 and pneumatic regulating valve 211 will accurately control the flow of leaching solution, to meet the flow requirements under different test conditions, at the same time,The electromagnetic control valve 302 and the one-way control valve 303 will control the discharge and collection of the leaching solution in the discharge pipe 3 according to the instructions of the data processing structure 102, close the CCD camera 101 and the constant light source 104 when the simulation seepage motion is finished, collect the leaching solution in the discharge pipe 3 to the leaching solution collection bottle 304, and record the reading of the flow meter 301, transmit the test data to the external computer or remote server for further analysis and storage through the communication interface of the data processing structure 102, optimize the test parameters and seepage mode according to the test results to adapt to the test requirements of different permeability characteristics of the in-situ leaching uranium ore reservoir, and

[0026] The quartz sand layer 202 serves as a water-resisting boundary, the side walls of the containing box 2 respectively facing the CCD camera 101 and the constant light source 104 are made of transparent glass, each transparent glass is pressed on the ore sample layer 201, the quartz sand layer serves as a water-resisting boundary, effectively isolates the water flow above and below the ore sample layer, ensures the accuracy of the test, the side walls of the containing box are made of transparent glass, so that the CCD camera and the constant light source can clearly observe the changes of the ore sample layer, at the same time, the transparent glass is pressed on the ore sample layer, preventing external light from interfering with the test, the constant light source 104 includes several groups of light strips with equal light intensity, each light strip is arranged at equal intervals and in parallel, and the vertical distance between each light strip and the containing box 2 is equal, ensuring the uniformity and stability of the light during the test, the data processing structure 102 includes image analysis software and permeability calculation module, which can automatically receive and process the image data shot by the CCD camera 101, calculate the permeability key parameters by analyzing the changes of the ore sample layer 201 under the action of the leaching solution, improve the accuracy and efficiency of the test, the data processing structure 102 also includes a communication interface, which can transmit and communicate data with the external computer or remote server, realize remote monitoring and analysis of test data, facilitate data storage and management, the electric heater 212 and the refrigerator 213 are both provided with temperature controllers and are connected with the data processing structure 102, which can receive temperature setting instructions from the data processing structure 102, the electromagnetic control valve 302 and the one-way control valve 303 are connected with the data processing structure 102, which can receive control instructions from the data processing structure 102, realizing accurate control of the temperature of the leaching solution, meeting the temperature requirements under different test conditions, the pumping rate of the peristaltic pump 204 can be remotely controlled through the data processing structure 102, which is used to realize accurate control of the flow of the leaching solution, the filter 205 adopts high-precision filter screen to remove impurities and particles in the leaching solution, ensuring the purity and consistency of the leaching solution during the test, and a pressure sensor is arranged between the peristaltic pump 204 and the filter 205.

[0027] The utility model discloses a work flow: when using the kind of ground leaching uranium deposit adjustable permeability testing device, first S1, preparation stage: the ore sample layer 201 to be tested is placed in the containing box 2 inside, and it is ensured that both sides are covered with quartz sand layer 202, to form the water boundary, eliminate interface effect, guarantee the uniformity of seepage process, after that, the leaching solution in the leaching solution bottle 203 is pumped to the filter 205 by peristaltic pump 204 at the set pumping rate, removes impurity and particle, ensures the purity and consistency of leaching solution, adjusts the temperature of electric heater 212 and refrigerator 213 selectively, receives and sets temperature instruction through data processing structure 102, to meet the temperature demand under different test conditions, opens the constant light source 104 in the light shield 103, ensures that the light irradiates on the transparent glass side wall of containing box 2 evenly and stably.

[0028] S2, test stage: open the CCD camera 101, keep its open state until the simulation seepage motion ends, and the CCD camera will record the light intensity information after the containing box, and the information is transmitted to the data processing structure 102, and the leaching solution is pushed by the peristaltic pump 204 and spreads evenly along the direction perpendicular to the light beam from one side of the containing box 2 to the other side, simulates the one-dimensional seepage motion of the liquid in the uniform pore medium, and the data processing structure 102 receives the light intensity information transmitted by the CCD camera 101, and based on the light transmission method principle and the fluid saturation model established by using the light intensity value, the direct relationship between the light intensity value and the fluid saturation is obtained, according to the change of light intensity with time, the data processing structure 102 will calculate the space-time evolution law of the ore bed porosity and permeability, in the test process, the flow regulating valve 210 and the pneumatic regulating valve 211 will accurately control the flow of the leaching solution to meet the flow demand under different test conditions, at the same time, the electromagnetic control valve 302 and the one-way control valve 303 will control the discharge and collection of the leaching solution in the discharge pipe 3 according to the instruction of the data processing structure 102.

[0029] S3, end stage: when the simulation seepage motion ends, the CCD camera 101 and the constant light source 104 are closed, the leaching solution in the discharge pipe 3 is collected to the leaching solution collection bottle 304, and the reading of the flowmeter 301 is recorded, the test data is transmitted to the external computer or remote server for further analysis and storage through the communication interface of the data processing structure 102, according to the test result, the test parameters and seepage mode are optimized to adapt to the test demand of different permeability characteristics of ground leaching uranium deposit.

[0030] The standard parts used in the present application file can be purchased from the market, the specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art, the mechanical, part and equipment adopt the conventional type in the prior art, the control circuit can be realized through the simple circuit connection of the person skilled in the art, it belongs to the public knowledge in the art, so the control mode and circuit connection are not explained in detail in the present application.

[0031] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An in-situ leachable uranium deposit reservoir adjustable permeability testing device comprising a light-tight box (1), characterized in that: The inside of the light shielding box (1) is provided with a CCD camera (101), the CCD camera (101) is connected with a data processing structure (102), one side wall of the light shielding box (1) is provided with a containing box (2), the outside of the light shielding box (1) is connected with a light shielding cover (103), the inside of the light shielding cover (103) is provided with a constant light source (104); The inside of the containing box (2) is provided with a mineral sample layer (201), the top end and the bottom end of the mineral sample layer (201) are symmetrically provided with a quartz sand layer (202), one side of the containing box (2) is provided with a leaching liquid bottle (203), the bottom of the leaching liquid bottle (203) is provided with a peristaltic pump (204), the output end of the peristaltic pump (204) is provided with a filter (205), the filter (205) is provided with a Y-shaped output pipe (206), the outside of the Y-shaped output pipe (206) is provided with a check valve (207), the two ends of the Y-shaped output pipe (206) are respectively provided with electromagnetic valves (208), one end of the Y-shaped output pipe (206) is provided with an electric heater (212), the other end of the Y-shaped output pipe (206) is provided with a refrigerator (213), the Y-shaped output pipe (206) is connected with a liquid delivery pipe (209), the outside of the liquid delivery pipe (209) is provided with a flow regulating valve (210), one side of the flow regulating valve (210) is provided with a pneumatic regulating valve (211), the outside of the containing box (2) near the bottom end is provided with a discharge pipe (3), the outside of the discharge pipe (3) is provided with a flow meter (301), one side of the flow meter (301) is provided with an electromagnetic control valve (302), one side of the electromagnetic control valve (302) is provided with a check control valve (303), the discharge pipe (3) is connected with a leaching liquid collecting bottle (304).

2. The device for testing the adjustable permeability of an in-situ leaching uranium ore reservoir according to claim 1, characterized in that: The quartz sand layer (202) serves as a water isolation boundary, the side walls of the containing box (2) opposite to the CCD camera (101) and the constant light source (104) are made of transparent glass, and each transparent glass is pressed on the mineral sample layer (201).

3. The device for testing the adjustable permeability of an in-situ leachable uranium deposit according to claim 1, characterized in that: The constant light source (104) comprises a plurality of groups of lamp strips with equal light intensity, each lamp strip is arranged at equal intervals and in parallel, and the vertical distance of each lamp strip from the containing box (2) is equal.

4. The device for testing the adjustable permeability of an in-situ leachable uranium deposit according to claim 1, characterized in that: The data processing structure (102) comprises image analysis software and permeability calculation modules, can automatically receive and process image data photographed by the CCD camera (101), calculate key parameters of permeability by analyzing changes of the mineral sample layer (201) under the action of leaching liquid, improve accuracy and efficiency of testing, and further comprises a communication interface, can perform data transmission and communication with an external computer or a remote server, realize remote monitoring and analysis of test data.

5. The device for testing the adjustable permeability of an in-situ leachable uranium deposit according to claim 1, characterized in that: The electric heater (212) and the refrigerator (213) are provided with temperature controllers, and are connected with the data processing structure (102), capable of receiving temperature setting instructions from the data processing structure (102), the electromagnetic control valve (302) and the one-way control valve (303) are connected with the data processing structure (102), capable of receiving control instructions from the data processing structure (102).

6. The device for testing the adjustable permeability of an in-situ leachable uranium deposit according to claim 1, characterized in that: The pumping rate of the peristaltic pump (204) can be remotely controlled by the data processing structure (102), for realizing accurate control of the flow of the leaching solution, the filter (205) adopts a high-precision filter screen for removing impurities and particles in the leaching solution, and a pressure sensor is arranged between the peristaltic pump (204) and the filter (205).

Images