Device for improving uranium ore leaching rate
The device, which uses controlled shock wave unblocking and in-situ leaching solution heating, solves the problem of filter clogging in uranium mining, achieves efficient uranium leaching, reduces costs, and increases uranium content.
Patent Information
- Application Number
- CN202422969777.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-03
AI Technical Summary
In existing uranium mining processes, the pumping process is often hampered by low efficiency, high cost, and low uranium content. This is mainly due to the filters being clogged by fine particles and chemical precipitates, and existing unclogging methods are inefficient and costly.
The device employs a controllable shock wave operation device and a ground leaching solution delivery device. It uses a controllable shock wave to unblock the filter and combines ground leaching solution heating to improve the uranium leaching rate. The device includes a controllable shock wave generator, hoisting equipment, ground leaching solution heating tank, and sensors to achieve rapid unblocking of the filter and efficient dissolution of uranium minerals.
It improves uranium leaching rate, reduces costs, maintains its effectiveness for a longer period, and is highly efficient. It increases uranium well oil production efficiency by more than 10%, extends the service life of mines, and reduces the risk of equipment corrosion.
Smart Images
Figure CN223536336U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of uranium mining technology and relates to a device for improving the uranium leaching rate. Background Technology
[0002] In current uranium mining processes, the leaching efficiency of uranium ore is low, primarily due to the blockage of filter screens in uranium injection wells by fine particles such as sand and rock powder, as well as chemical precipitates like calcium, magnesium, and aluminum, which obstructs the flow of the leaching fluid. The main solution for unblocking uranium ore during current in-situ leaching is well washing. Well washing methods include air compressor washing, piston washing, chemical washing, and foam washing, with air compressor and piston washing being the most common; or chemical washing may be used in combination with these methods.
[0003] The drawbacks of using well cleaning to unblock blockages are that air compressor well cleaning only lasts for half a month, while piston well cleaning lasts for 1-2 months, which is time-consuming, inefficient, and costly. Chemical well cleaning is mainly for chemical blockages, but it usually requires soaking, which takes a long time and can corrode equipment. Utility Model Content
[0004] The technical problem solved by this utility model is to provide a device for improving the uranium leaching rate, which solves the problems of low efficiency, high cost and low uranium content in the extracted leaching solution in the prior art due to obstruction during the pumping process.
[0005] This utility model is achieved through the following technical solution:
[0006] An apparatus for improving uranium ore leaching rate includes a controllable shock wave operation device and a ground leaching solution delivery device;
[0007] The controllable shock wave operation device includes a hoisting device installed on the ground around the pumping well or injection well. The controllable shock wave generator is connected to the hoisting device via a cable, and the end of the cable is also connected to a controllable shock wave controller. The hoisting device puts the controllable shock wave generator into or removes it from the pumping well or injection well.
[0008] The infiltration fluid delivery device includes an infiltration fluid heating tank connected to the injection well, and a pressure pump is also provided between the infiltration fluid heating tank and the injection well.
[0009] The hoisting equipment includes a winch, a ground pulley, and a top pulley, with cables wound sequentially around the winch, ground pulley, and top pulley; a controllable shock wave controller is located beside the winch.
[0010] The winch is powered by a 380V power supply; the controllable shock wave controller is powered by a 220V power supply.
[0011] As the winch rotates, the controllable shock wave generator is lowered / raised through a cable.
[0012] The controllable shock wave generator contains 0.25 to 2.5 g of energetic material.
[0013] The cable is equipped with multiple controllable shock wave generators, which are lowered to placement points inside the well, with one controllable shock wave generator installed at each placement point.
[0014] The placement points are located in the middle and / or upper and lower ends of the filter inside the well.
[0015] If there are more than three controllable shock wave generators on the cable, the controllable shock wave generators should be set 1 to 3 meters apart from each other.
[0016] If there are 1 to 3 controllable shock wave generators on the cable, the controllable shock wave generators should be set 2 to 3 meters apart.
[0017] The pumping wells and injection wells are arranged in a plum blossom pattern, and the hoisting equipment is located on the ground between the pumping wells and injection wells.
[0018] The inlet of the leaching solution heating tank is connected to the leaching solution storage tank, and the outlet is connected to the pressure pump.
[0019] The leaching solution heating tank is also equipped with a temperature sensor and a liquid level sensor.
[0020] Compared with the prior art, the present invention has the following beneficial technical effects:
[0021] The device for improving uranium leaching rate provided by this utility model can perform controlled shock wave operations to unclogging filters in injection or pumping wells. The shock wave impacts, shakes off, and peels away fine particles such as sand and rock powder, as well as chemical precipitates such as calcium, magnesium, and aluminum, which are attached to the filter screen, restoring filtration performance. One operation can last for at least six months. Compared with existing well washing and unclogging methods, it is simple to operate and has the advantages of short operation time, high efficiency, and low cost. Compared with chemical washing, it does not require soaking, has a short treatment time, and does not affect equipment inside the well.
[0022] The device for improving uranium ore leaching rate provided by this utility model, based on shock wave operation, further heats the leaching solution to a certain temperature before injection. Compared with the existing method of directly injecting the leaching solution into the injection well, heating the leaching solution and allowing it to flow into the fissures of the uranium ore strata accelerates the dissolution rate of uranium minerals, enabling uranium to leach more effectively from the ore into the solution. At the same time, the appropriate temperature can reduce the viscosity of the leaching solution, enhance its fluidity, and facilitate its seepage in the ore strata, allowing for better contact with the uranium ore, dissolving the uranium element in the ore, and then pumping it to the surface through a well, thereby increasing the uranium content in the extracted leaching solution.
[0023] The device for improving uranium leaching rate provided by this utility model can operate continuously and at any time, achieving sustained results. It can increase the oil production efficiency of uranium wells by more than 10%, increase the benefits of mineral deposits, and extend the service life of mines. It effectively reduces costs and improves uranium leaching rate, has broad application prospects, and is of great significance for improving the strategic uranium reserves of my country's nuclear industry. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the process method for improving the uranium ore leaching rate according to the present invention.
[0025] Among them, 1 is a winch, 2 is a ground pulley, 3 is a top pulley, 4 is an armored cable, 5 is a controllable shock wave generator, 6 is a filter, 7 is a blockage, 8 is a heatable leaching tank, 9 is leaching solution, 10 is an injection filter, 11 is gravel, and 12 is the stratum. Detailed Implementation
[0026] The present invention will be further described in detail below with reference to the embodiments. The description is for the purpose of explaining the present invention and not limiting it.
[0027] See Figure 1 A device for improving uranium ore leaching rate, comprising a controllable shock wave operation device and a ground leaching solution delivery device;
[0028] The controllable shock wave operation device includes a hoisting device installed on the ground around the pumping well or injection well. The controllable shock wave generator is connected to the hoisting device via a cable, and the end of the cable is also connected to a controllable shock wave controller. The hoisting device puts the controllable shock wave generator into or removes it from the pumping well or injection well.
[0029] The infiltration fluid delivery device includes an infiltration fluid heating tank connected to the injection well, and a pressure pump is also provided between the infiltration fluid heating tank and the injection well.
[0030] Furthermore, the hoisting equipment includes a winch, a ground pulley, and a top pulley, with cables wound sequentially around the winch, ground pulley, and top pulley; a controllable shock wave controller is located beside the winch.
[0031] Specifically, the winch is powered by a 380V power supply; the controllable shock wave controller is powered by a 220V power supply.
[0032] As the winch rotates, the controllable shock wave generator is lowered / raised through a cable.
[0033] Furthermore, the controllable shock wave generator contains 0.25 to 2.5 g of energetic material.
[0034] The cable is equipped with multiple controllable shock wave generators, which are lowered to placement points inside the well, with one controllable shock wave generator installed at each placement point.
[0035] The placement points are located in the middle and / or upper and lower ends of the filter inside the well.
[0036] Specifically, if there are more than three controllable shock wave generators on the cable, the controllable shock wave generators should be set 1 to 3 meters apart from each other.
[0037] If there are 1 to 3 controllable shock wave generators on the cable, the controllable shock wave generators should be set 2 to 3 meters apart.
[0038] Furthermore, the inlet of the ground leaching solution heating tank is connected to the ground leaching solution storage tank, and the outlet is connected to the pressure pump; the ground leaching solution heating tank is also equipped with a temperature sensor and a liquid level sensor.
[0039] The following describes the operation of this invention to improve the uranium ore leaching rate:
[0040] a. Shock wave declogging of the filter:
[0041] The controllable shock wave generator is suspended and lowered to the filter in the pumping or injection well, located in the middle and / or upper and lower ends; the controllable shock wave generator is activated, and the shock wave generated by it peels off the deposits on the filter and restores the filtration performance; and as the shock wave propagates, it unblocks and increases the gaps in the uranium mining area near the filter in the pumping or injection well.
[0042] After the controlled shock wave operation is completed, the controlled shock wave generator is removed from the well for pumping, and then the well is completed.
[0043] b. Change the temperature of the infiltration solution:
[0044] A heating device is added to the leaching solution storage tank, or a heating tank connected to the injection well is installed to heat the leaching solution to be injected to 30-50°C. The leaching solution is then pressurized and transported to the injection well through pipelines via a pressurization device. The leaching solution flows through a filter into the fissures of the uranium ore layer, accelerating the dissolution rate of uranium minerals and allowing uranium to leach more effectively from the ore into the solution. A suitable temperature can reduce the viscosity of the leaching solution and enhance its fluidity, which is conducive to the seepage of the leaching solution in the ore layer and better contact with the uranium ore to dissolve the uranium element in the ore. The leaching solution is then pumped to the surface through a pumping well, increasing the uranium content in the extracted leaching solution.
[0045] Specific implementation examples are given below.
[0046] Example 1
[0047] An apparatus for improving the leaching rate of uranium ore, comprising the following operations:
[0048] 1) Controllable shock waves for unclogging and gap-filling in pumping and injection wells in low-leaching areas
[0049] The pumping and injection wells are arranged in a plum blossom shape. A ground device is installed between the pumping and injection wells, including a winch 1, a ground pulley 2, and a top pulley 3. Armored cable 4 (7-core cable) is wound around the winch, ground pulley, and top pulley in sequence. The rotation of the winch puts the controllable shock wave generator 5 (model YF-01) into or takes it out of the well.
[0050] Specifically, the controllable shock wave generator contains 1g of energetic material, and two controllable shock wave generators are installed on the armored cable 4.
[0051] The controllable shock wave generator is lowered into the well (either for pumping or injection) via an armored cable to the filter position. The position can be adjusted at the upper or lower end of the filter.
[0052] Pressing the start button on the ground sends a control signal through a 7-core cable to the controllable shock wave generator down in the well. The 220V voltage is inverted into a high-voltage discharge, releasing plasma that directly drives the energetic material to generate a high-intensity shock wave, which shakes off the fine particles attached to the filter screen. The shock wave also breaks open the sand, rock powder, and other fine particles, as well as chemical precipitates such as calcium, magnesium, and aluminum, that are attached to the fissures in the uranium ore rock layers.
[0053] After the controlled shock wave operation, the device is pulled out of the wellbore, and the well is completed.
[0054] 2) Increase the reaction rate by changing the temperature of the leaching solution.
[0055] The leaching solution is heated in the heating tank until it reaches a temperature of 40°C. Then, the valve is opened, the pressure pump is started, and the leaching solution is pressurized and transported to the injection well through the pipeline. Existing leaching solution can be used. The leaching solution flows through the filter into the fissures of the uranium ore strata. The leaching agent reacts chemically with the minerals, dissolving the uranium element in the ore. The solution is then pumped to the surface through the pumping well and undergoes a series of separation processes to achieve the recovery of metallic uranium.
[0056] Temperature and level of the leaching solution in the leaching solution heating tank can be monitored using temperature sensors and level sensors.
[0057] The device for improving uranium leaching rate provided by this utility model can operate continuously and at any time, achieving sustained results. It can increase the oil production efficiency of uranium wells by more than 10%, increase the benefits of mineral deposits, and extend the service life of mines. It effectively reduces costs and improves uranium leaching rate, has broad application prospects, and is of great significance for improving the strategic uranium reserves of my country's nuclear industry.
[0058] The embodiments given above are preferred examples of implementing this utility model, and this utility model is not limited to the above embodiments. Any non-essential additions or substitutions made by those skilled in the art based on the technical features of the technical solution of this utility model shall fall within the protection scope of this utility model.
Claims
1. An apparatus for improving the leaching rate of uranium ore, characterized in that, This includes controllable shock wave operation devices and leaching liquid delivery devices; The controllable shock wave operation device includes a hoisting device installed on the ground around the pumping well or injection well. The controllable shock wave generator is connected to the hoisting device via a cable, and the end of the cable is also connected to a controllable shock wave controller. The hoisting device puts the controllable shock wave generator into or removes it from the pumping well or injection well. The infiltration fluid delivery device includes an infiltration fluid heating tank connected to the injection well, and a pressure pump is also provided between the infiltration fluid heating tank and the injection well.
2. The apparatus for improving uranium ore leaching rate as described in claim 1, characterized in that, The hoisting equipment includes a winch, a ground pulley, and a top pulley, with cables wound sequentially around the winch, ground pulley, and top pulley; a controllable shock wave controller is located beside the winch.
3. The apparatus for improving uranium ore leaching rate as described in claim 2, characterized in that, The winch is powered by a 380V power supply; the controllable shock wave controller is powered by a 220V power supply. As the winch rotates, the controllable shock wave generator is lowered / raised through a cable.
4. The apparatus for improving uranium ore leaching rate as described in claim 1, characterized in that, The controllable shock wave generator contains 0.25~2.5g of energetic material.
5. The apparatus for improving uranium ore leaching rate as described in claim 1, characterized in that, The cable is equipped with multiple controllable shock wave generators, which are lowered to placement points inside the well, with one controllable shock wave generator installed at each placement point. The placement points are located in the middle and / or upper and lower ends of the filter inside the well.
6. The apparatus for improving uranium ore leaching rate as described in claim 5, characterized in that, If there are more than three controllable shock wave generators on the cable, the controllable shock wave generators should be set 1 to 3 meters apart from each other. If there are 1 to 3 controllable shock wave generators on the cable, the controllable shock wave generators should be set 2 to 3 meters apart.
7. The apparatus for improving uranium ore leaching rate as described in claim 1, characterized in that, The pumping and injection wells are arranged in a plum blossom pattern, and the hoisting equipment is located on the ground between the pumping and injection wells.
8. The apparatus for improving uranium ore leaching rate as described in claim 1, characterized in that, The inlet of the leaching solution heating tank is connected to the leaching solution storage tank, and the outlet is connected to the pressure pump. The leaching solution heating tank is also equipped with a temperature sensor and a liquid level sensor.