CN112627795B - Sandstone uranium ore horizontal well ground immersion exploitation simulation test system and test method - Google Patents
Sandstone uranium ore horizontal well ground immersion exploitation simulation test system and test method Download PDFInfo
- Publication number
- CN112627795B CN112627795B CN202011519265.4A CN202011519265A CN112627795B CN 112627795 B CN112627795 B CN 112627795B CN 202011519265 A CN202011519265 A CN 202011519265A CN 112627795 B CN112627795 B CN 112627795B
- Authority
- CN
- China
- Prior art keywords
- horizontal well
- leaching
- liquid
- uranium
- monitoring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/28—Dissolving minerals other than hydrocarbons, e.g. by an alkaline or acid leaching agent
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention provides a sandstone uranium ore horizontal well ground leaching exploitation simulation test system and a test method, which belong to the technical field of sandstone uranium ore ground leaching exploitation. The simulation test system and the test method for horizontal well in-situ leaching exploitation of sandstone uranium ores can exploit uranium ores by adopting a horizontal well liquid injection and vertical well liquid extraction mode, and have guiding significance for exploring the influence of the proportion of leaching agents and the amount of liquid injection on the in-situ leaching effect in horizontal well in-situ leaching exploitation, mastering the leaching solution seepage rule, optimizing a well arrangement scheme and improving the uranium resource recovery ratio.
Description
Technical Field
The invention belongs to the technical field of sandstone uranium ore ground immersion mining, and particularly relates to a sandstone uranium ore horizontal well ground immersion mining simulation test system and a test method.
Background
The natural uranium is an important energy source for nuclear power and nuclear military industry in China, and the key for filling up the huge gap of the uranium resources in China is to increase the development strength of the uranium resources and improve the exploitation efficiency of the uranium resources. At present, uranium ore resources in China are mainly sandstone reservoirs, and are mostly mined by using an in-situ leaching process. The ground leaching mining is an integrated uranium mining method which dissolves uranium in ores under the condition of natural burial by means of a chemical reagent through a drilling project and does not cause displacement of the ores. In the whole mining process, the mining and smelting process of the uranium ores is safe, green and environment-friendly because the earth surface operation and control in the whole process are not needed to cut tunnels or uncover covering layers to extract and transport the ores, and the landform and the earth surface landscape are basically not damaged.
The ground immersion exploitation efficiency is directly related to a drilling mode, a grid mode (four-point mode, five-point mode or seven-point mode) or a determinant mode (single line or multiple lines along the direction of an ore body) of straight well liquid injection and straight well liquid extraction is mostly adopted in a traditional well arrangement mode, but the return on investment of a straight well pattern is remarkably reduced along with the increase of development depth and difficulty. And the mode of horizontal well liquid injection and vertical well liquid extraction is theoretically more advantageous. However, the related research on exploitation of horizontal well liquid injection and vertical well liquid extraction modes is relatively few, and the laboratory physical model test is still lacked. Based on the situation, a sandstone uranium ore horizontal well ground leaching production simulation test system is urgently needed, is used for simulating the modes of horizontal well liquid injection and vertical well liquid extraction, provides reference for engineering practice, and has important guiding significance for exploring the influence of the proportion of a leaching agent and the amount of the liquid to be extracted and injected on the ground leaching effect in horizontal well ground leaching production, mastering the seepage rule of the leaching solution, optimizing a well arrangement scheme and improving the recovery ratio of uranium resources.
Disclosure of Invention
The invention aims to provide a sandstone uranium ore horizontal well ground leaching exploitation simulation test system, and aims to solve the technical problem of lacking research on sandstone uranium ore horizontal well ground leaching exploitation physical simulation tests.
In order to realize the purpose, the invention adopts the technical scheme that: the sandstone uranium ore horizontal well ground leaching production simulation test system comprises a leaching device, a liquid injection device, a liquid extraction device and a collection monitoring device, wherein the leaching device comprises an ore body material of a uranium ore aquifer, a horizontal well and a vertical well, the horizontal well is arranged in the ore body material in a horizontal shape, the vertical well is arranged in a vertical shape, a plurality of monitoring holes are distributed in the horizontal well along the way, one end of the horizontal well is opened, the other end of the horizontal well is closed, and the ore body material leaks from the open end of the horizontal well and the top end of the vertical well; the liquid injection device is communicated with the open end of the horizontal well and is used for injecting a leaching agent into the horizontal well, and the leaching liquid is immersed into the ore body material through the horizontal well; the liquid extraction device is communicated with the top end of the vertical well and is used for extracting a leaching agent which is positioned in the ore body material and reacts with uranium through the vertical well; and the acquisition monitoring device is used for acquiring the on-way pore water pressure of the horizontal well in the ore body material through the plurality of monitoring holes and monitoring the uranium concentration in the leaching agent pumped out by the liquid pumping device.
As another embodiment of the application, the leaching device further comprises a box body with a perspective internal structure and an open upper end, the ore body material is arranged in the box body, and filters for filtering sand are arranged in the horizontal well and the vertical well.
As another embodiment of the application, the liquid injection device comprises a liquid distribution box, a liquid injection pipeline and a liquid injection pump, wherein the liquid distribution box is used for containing the leaching agent; two ends of the liquid injection pipeline are respectively communicated with the liquid distribution box and the open end of the horizontal well and used for conveying a leaching agent into the horizontal well; and the liquid injection pump is arranged on the liquid injection pipeline and used for pumping the leaching agent into the horizontal well.
As another embodiment of this application, priming device is still including locating annotate last first flowmeter and the first manometer of liquid pipeline, first flowmeter is used for the monitoring annotate in the liquid pipeline leaching agent and annotate liquid flow, first manometer is used for the monitoring annotate in the liquid pipeline leaching agent and annotate liquid pressure.
As another embodiment of the application, the liquid injection device further comprises a stirrer arranged in the liquid distribution box, and the stirrer is used for stirring and placing liquid in the liquid distribution box.
As another embodiment of the present application, the liquid pumping device comprises a liquid collecting tank, a liquid pumping pipeline and a liquid pumping pump, wherein the liquid collecting tank is used for accommodating a leaching agent which reacts with uranium in the ore body material; two ends of the liquid pumping pipeline are respectively communicated with the top end of the vertical shaft and the liquid collecting pool and are used for conveying a leaching agent for reaction into the liquid collecting pool; the liquid pumping pump is arranged on the liquid pumping pipeline and is used for pumping out the leaching agent which is reacted with the uranium in the ore body material; the liquid pumping device further comprises a back pressure valve arranged on the liquid pumping pipeline.
As another embodiment of this application, still be equipped with second flowmeter and second manometer on the liquid suction pipeline, the second flowmeter is used for monitoring leachant drawing liquid flow in the liquid suction pipeline, the second manometer is used for monitoring leachant drawing liquid pressure in the liquid suction pipeline.
As another embodiment of the application, the collecting and monitoring device comprises a plurality of pressure sensors, a uranium concentration monitor and a computer, wherein the plurality of pressure sensors are arranged in the plurality of monitoring holes and used for collecting the on-way pore water pressure of the horizontal well in the ore body material; the uranium concentration monitor is used for monitoring the uranium concentration in the leaching agent pumped out by the liquid pumping device; and the computer is respectively electrically connected with the pressure sensors and the uranium concentration monitor and is used for receiving a plurality of pressure signals of the pressure sensors and receiving concentration signals of the uranium concentration monitor and displaying the signals.
As another embodiment of the application, the upper part and the lower part of the ore body material are both provided with water-stop sheets.
The invention also provides a sandstone uranium deposit horizontal well immersion mining simulation test method, which comprises the following steps:
arranging ore body materials in the box body, arranging water-stop plates at the upper part and the lower part of the ore body materials, arranging a horizontal well along the horizontal direction of the ore body materials and a plurality of vertical wells along the vertical direction, and arranging a plurality of monitoring holes on the ore body materials along the horizontal well;
enabling the liquid injection device to be communicated with one end of the horizontal well, injecting a leaching agent into the horizontal well through the liquid injection device, and enabling the leaching agent to penetrate into the ore body material and react with uranium in the ore body material;
the liquid extraction device is communicated with the upper end of the vertical well, and the leaching agent which is positioned in the ore body material and reacts with the uranium is extracted through the liquid extraction device, so that the extracted leaching agent is contained in the container;
and collecting the on-way pore water pressure of a horizontal well in a monitoring hole in the ore body material and monitoring the uranium concentration of the leaching agent in the container pumped out by the liquid pumping device by the collecting and monitoring device.
The sandstone uranium ore horizontal well ground immersion exploitation simulation test system and the test method provided by the invention have the beneficial effects that: compared with the prior art, the sandstone uranium ore horizontal well in-situ leaching simulation test system simulates the sandstone uranium ore horizontal well in-situ leaching process, the horizontal well and the vertical well are arranged in the ore-bearing aquifer ore body material of the leaching device, the monitoring holes are distributed along the horizontal well in the process, the leaching agent is injected into the horizontal well through the liquid injection device, the leaching agent is immersed into the ore body material and chemically reacts with uranium, the reacted leaching agent is extracted through the vertical well through the liquid extraction device, the in-situ pore water pressure of the horizontal well and the uranium concentration in the reacted leaching agent can be collected through the collection monitoring device, the technical problem of lack of researching on the sandstone ore horizontal well in-situ leaching physical simulation test is solved, the injection mode of the horizontal well and the vertical well can be adopted to extract uranium ore through carrying out the sandstone in-situ leaching physical simulation, the injection mode of the horizontal well in-situ leaching can be obtained, reference is provided for engineering practice, and the significant guide is provided for exploring the leaching agent proportion, extracting effect of the leaching agent in the horizontal well in-situ leaching, mastering the leaching rule, optimizing the leaching solution distribution and improving the uranium resource recovery ratio.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a sandstone uranium ore horizontal well leaching and mining simulation test system provided by an embodiment of the invention;
fig. 2 is a plan view of a monitoring hole layout structure of the sandstone uranium deposit horizontal well exploitation simulation test system provided by the embodiment of the invention;
fig. 3 is a schematic structural diagram of a filter of a sandstone uranium ore horizontal well leaching and mining simulation test system provided by the embodiment of the invention.
In the figure: 1. a leaching apparatus; 11. an ore body material; 12. horizontal wells; 13. a vertical well; 14. a monitoring hole; 15. a box body; 16. a filter; 17. a water-stop sheet;
2. a liquid injection device; 21. a liquid distribution box; 22. a liquid injection pipeline; 23. a liquid injection pump; 24. a first flow meter; 25. a first pressure gauge; 26. a stirrer;
3. a liquid pumping device; 31. a liquid collecting tank; 32. a liquid pumping pipeline; 33. a liquid pump; 34. a second flow meter; 35. a second pressure gauge; 36. a back pressure valve;
4. collecting a monitoring device; 41. a pressure sensor; 42. a uranium concentration monitor; 43. and (4) a computer.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is 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 invention and are not intended to limit the invention.
Referring to fig. 1 to fig. 3 together, a simulation test system for horizontal-well horizontal-land leaching exploitation of sandstone uranium ore provided by the invention will be described. The sandstone uranium ore horizontal well ground leaching production simulation test system comprises a leaching device 1, a liquid injection device 2, a liquid extraction device 3 and a collection monitoring device 4, wherein the leaching device 1 comprises an ore body material 11 of a uranium ore aquifer, a horizontal well 12 and a vertical well 13, the horizontal well 12 is arranged in the ore body material 11 in a horizontal shape, the vertical well 13 is arranged in a vertical shape, a plurality of monitoring holes 14 are distributed in the horizontal well 12 along the way, one end of the horizontal well 12 is opened, the other end of the horizontal well is closed, and the ore body material 11 leaks out of the opening end of the horizontal well 12 and the top end of the vertical well 13; the liquid injection device 2 is communicated with the open end of the horizontal well 12 and is used for injecting a leaching agent into the horizontal well 12, and leaching liquid is soaked into the ore body material 11 through the horizontal well 12; the liquid extraction device 3 is communicated with the top end of the vertical well 13 and is used for extracting a leaching agent which is positioned in the ore body material 11 and reacts with uranium through the vertical well 13; the acquisition monitoring device 4 is used for acquiring the on-way pore water pressure of the horizontal well 12 in the ore body material 11 through a plurality of monitoring holes 14 and monitoring the uranium concentration in the leaching agent pumped out by the liquid pumping device 3.
Compared with the prior art, the sandstone uranium ore horizontal well in-situ leaching simulation test system provided by the invention simulates the process of extracting sandstone uranium ore horizontal well 12 in-situ leaching, the horizontal well 12 and the vertical well 13 are arranged in the ore body material 11 of the ore-containing aquifer of the leaching device 1, a plurality of monitoring holes 14 are distributed along the horizontal well 12, a leaching agent is injected into the horizontal well 12 through the injection device 2, so that the leaching agent is immersed into the ore body material 11 and chemically reacts with uranium, the reacted leaching agent is extracted through the vertical well 13 through the liquid extraction device 3, the water pressure and the uranium concentration in the reacted leaching agent can be collected along the horizontal well 12 through the acquisition monitoring device 4, the technical problem of researching the lack of the leaching agent in the physical simulation test of extracting sandstone uranium ore horizontal well 12 in-situ leaching is solved, the leaching solution extraction method adopting the leaching liquid of the horizontal well 12 and the vertical well 13 is obtained, the leaching solution extraction method is provided for engineering practice, the leaching solution amount of the sandstone uranium ore horizontal well 12 in-situ leaching physical simulation test is explored, and the leaching solution extraction effect of the leaching agent is improved, and the leaching solution extraction effect of the leaching solution is improved.
Before the simulation test is started, preparing a container, putting clean water into the container, and cleaning the ore bed of the ore body material 11 by the clean water through a liquid injection device 2; preparing a sulfuric acid solution and water in a container, mixing, finishing the preparation, and injecting the acid solution into an ore bed (an ore-containing aquifer) through an injection device 2 for acidizing the ore bed; finally, H is added into the container 2 O 2 The oxidant is injected into the interior of the ore bed through the liquid injection device 2, and the simulated leaching process is started.
The invention establishes a sandstone uranium deposit horizontal well 12-site leaching exploitation simulation experiment device which is used for simulating the whole process from drilling, liquid injection, leaching solution seepage migration, chemical reaction with ores to liquid extraction site leaching exploitation, and can monitor the pressure and flow of the leaching solution, the change of ion components of the leaching solution, the leaching range, the permeability of an ore layer, the change of a pore structure of the ore layer, the uranium content of the leaching solution and other information in real time in the whole process.
The monitoring holes 14 are arranged in a way along the horizontal well 12, such as the arrangement of the monitoring holes 14 from 1# -14# in fig. 2. The arrangement of the monitoring holes 14 and the vertical wells 13 adopts a staggered arrangement, and after the top of the vertical well 13 is connected with the liquid pumping device 3, the top of the vertical well 13 is sealed by sealing materials. Through the arrangement of the monitoring holes 14, the monitoring holes 14 are arranged at certain intervals, so that the hydraulic pressure drop effect of the horizontal well 12 along the way can be monitored, and the seepage range, the pore pressure change in an ore bed and the concentration change of leaching solution ions can also be monitored. The horizontal wells 12 are arranged in one, the vertical wells 13 are arranged in a plurality, and the vertical wells 13 are distributed on two sides of the horizontal wells 12.
As a specific embodiment of the horizontal well ground leaching production simulation test system for sandstone uranium ore, please refer to fig. 1 to 3, the leaching device 1 further includes a box body 15 with an open upper end and capable of seeing the internal structure, the ore body material 11 is arranged in the box body 15, and filters 16 for filtering sand are arranged in the horizontal well 12 and the vertical well 13. The top of the box body 15 is provided with an opening, ore body materials 11 can be placed into the box body 15 through the opening, one end of a horizontal well 12 extends out of one side of the box body 15 and can be connected with the output end of the liquid injection device 2, the other end of the horizontal well 12 is buried in the ore body materials 11, the horizontal well 12 is arranged in a horizontal shape, and the arrangement mode of the horizontal well 12 is realized by drilling in the ore body materials 11 through drilling equipment; the arrangement mode of the vertical well 13 is realized by drilling in the ore body material 11 through drilling equipment, the box body 15 is made of toughened transparent glass, the periphery and the bottom are sealed, the top is open, and the seam between the horizontal well 12 and the wall of the box body 15 is tightly sealed through glass cement or sealant.
The ore body material 11 is a mine with actual uranium, the uranium content of an ore bed is determined in advance, and then a simulation test is carried out. Specifically, the filter 16 is a slotted screen pipe filter 16, one end of which is closed and the other end of which is opened, and is sleeved inside the horizontal well 12 and the vertical well 13 to play a role in sand prevention. The horizontal well 12 only simulates the horizontal section of a mine in actual production, and is characterized by reducing the drilling difficulty of horizontal well 12 deflection, well track control and the like.
As a specific embodiment of the sandstone uranium ore horizontal well ground leaching production simulation test system provided by the invention, referring to fig. 1 to 3, a liquid injection device 2 comprises a liquid distribution box 21, a liquid injection pipeline 22 and a liquid injection pump 23, wherein the liquid distribution box 21 is used for containing a leaching agent; two ends of the liquid injection pipeline 22 are respectively communicated with the liquid distribution box 21 and the open end of the horizontal well 12 and used for conveying a leaching agent into the horizontal well 12; the injection pump 23 is arranged on the injection pipeline 22 and used for pumping the leaching agent into the horizontal well 12. Join in marriage liquid case 21 and just to the effect that the leaching agent of pouring into ore body material 11 inside holds and holds, place the leaching agent in joining in marriage liquid case 21, can artifically or electronic stir it, pour into in 23 to horizontal well 12 through the infusion pump after the misce bene, after the leaching agent reachs in the horizontal well 12, effect through infiltration will permeate ore body material 11 in, and carry out chemical reaction with the uranium in ore body material 11, treat a period of time after, extract the leaching agent after reacting with the uranium through drawing liquid device 3, the rethread collection monitoring devices 4 detects the concentration of uranium.
Acid solutions with different concentrations can be arranged in the solution distribution box 21, and the optimal proportion of the leaching agent is found. Valves are provided at the head and tail ends of the injection line 22 so that the flow rate, time, etc. of the leachant to be injected can be controlled. A valve is provided on one side of the liquid distribution tank 21 so that the volume, the amount of liquid to be mixed, and the like in the liquid distribution tank 21 can be controlled.
As a specific embodiment of the sandstone uranium ore horizontal well ground leaching and mining simulation test system provided by the present invention, referring to fig. 1 to 3, the liquid injection device 2 further includes a first flow meter 24 and a first pressure gauge 25 which are arranged on the liquid injection pipeline 22, the first flow meter 24 is configured to monitor a liquid injection flow rate of the leaching agent in the liquid injection pipeline 22, and the first pressure gauge 25 is configured to monitor a liquid injection pressure of the leaching agent in the liquid injection pipeline 22. By adjusting the pressure and flow of injection liquid, the injection pressure and flow of the leaching agent in the actual mine can be simulated, and the theoretical reference basis is taken for the later mining mode of horizontal well 12 injection liquid and vertical well 13 liquid extraction.
Preferably, the first flowmeter 24 and the first pressure gauge 25 can be connected to the collection monitoring device 4, and the liquid injection pressure and the liquid injection amount can be monitored and recorded in real time through the collection monitoring device 4.
As a specific embodiment of the sandstone uranium ore horizontal well ground leaching and mining simulation test system provided by the present invention, referring to fig. 1 to 3, the liquid injection device 2 further includes a stirrer 26 disposed in the liquid distribution tank 21, and the stirrer 26 is configured to stir liquid disposed in the liquid distribution tank 21. The liquid in the liquid distribution box 21 is uniformly mixed by the whole stirring process of the stirrer 26, and the liquid can be a leaching agent.
As a specific embodiment of the sandstone uranium ore horizontal well ground leaching simulation test system provided by the present invention, referring to fig. 1 to 3, the liquid pumping device 3 includes a liquid collecting tank 31, a liquid pumping pipeline 32 and a liquid pumping pump 33, wherein the liquid collecting tank 31 is used for accommodating a leaching agent that reacts with uranium in the ore body material 11; two ends of the liquid pumping pipeline 32 are respectively communicated with the top end of the vertical shaft 13 and the liquid collecting tank 31 and used for conveying a leaching agent for reaction into the liquid collecting tank 31; the liquid pump 33 is disposed on the liquid pumping pipeline 32 and is used for pumping out the leaching agent reacted with uranium in the ore body material 11. The side part of the liquid collecting tank 31 is provided with a valve, so that the leaching agent can be discharged, and the concentration of uranium can be monitored conveniently after the leaching agent is discharged. Valves are also provided at the head and tail ends of the liquid withdrawal line 32 to control the flow rate and time of the withdrawal liquid (leachant), etc.
As a specific embodiment of the sandstone uranium ore horizontal well ground leaching production simulation test system provided by the present invention, referring to fig. 1 to 3, the liquid pumping pipeline 32 is further provided with a second flow meter 34 and a second pressure gauge 35, the second flow meter 34 is used for monitoring a liquid pumping flow rate of the leaching agent in the liquid pumping pipeline 32, and the second pressure gauge 35 is used for monitoring a liquid pumping pressure of the leaching agent in the liquid pumping pipeline 32. The water pressure and the amount of the liquid drawn in the liquid drawing line 32 are monitored by a second flow meter 34 and a second pressure gauge 35, and the drawn-out leaching agent reaches the liquid collection tank 31.
Preferably, the first flowmeter 24 and the first pressure gauge 25 can be connected to the collection monitoring device 4, and the liquid injection pressure and the liquid injection amount can be monitored and recorded in real time through the collection monitoring device 4.
As a specific embodiment of the leaching and mining simulation test system for the horizontal well of sandstone uranium deposit provided by the present invention, referring to fig. 1 to 3, the liquid pumping device 3 further includes a back pressure valve 36 disposed on the liquid pumping pipeline 32. The liquid is pumped by the liquid pump 33, and the back pressure valve 36 adjusts the pumping pressure in the pumping pipeline 32, so that the pressure condition of the mineral seam water can be simulated to simulate the pressure environment of the mineral seam. By adjusting the second pressure gauge 35, the second flowmeter 34 and the back pressure valve 36, the leaching agent proportioning scheme, the injection pressure, the liquid pumping and injecting amount, the well arrangement mode, the filter 16 slot density and other factors can be adjusted.
As a specific embodiment of the leaching and mining simulation test system for the sandstone uranium deposit horizontal well, please refer to fig. 1 to 3, the collecting and monitoring device 4 includes a plurality of pressure sensors 41, uranium concentration monitors 42 and computers 43, and the plurality of pressure sensors 41 are all arranged in the plurality of monitoring holes 14 and used for collecting the on-way pore water pressure of the horizontal well 12 in the ore body material 11; the uranium concentration monitor 42 is used for monitoring the uranium concentration in the leaching agent pumped by the liquid pumping device 3; the computer 43 is electrically connected to the plurality of pressure sensors 41 and the uranium concentration monitor 42, respectively, and is configured to receive the pressure signals of the plurality of pressure sensors 41 and the concentration signals of the uranium concentration monitor 42, and display the signals. The pressure sensors 41 are respectively arranged inside the monitoring holes 14 such as 1# -14# in fig. 2, the upper ends of the monitoring holes are sealed, the pressure sensors 41 are connected with a computer 43, connecting wires pass through the sealed positions, and the sealing can be sealed by materials such as sealant. A uranium concentration monitor 42 monitors the leachant in or out of the sump 31 and by monitoring the uranium concentration of the leachant at different time intervals, the amount of leached uranium can be calculated on a computer 43 and the amount of uranium remaining and recovery in the seam can be estimated.
The first flowmeter 24, the first pressure gauge 25, the second flowmeter 34 and the second pressure gauge 35 are respectively connected with the computer 43, the liquid injection pressure, the liquid injection flow rate, the liquid extraction pressure and the liquid extraction flow rate can be controlled through the computer 43, and then the pressure and the flow rate of liquid injection and liquid extraction in an actual mine can be simulated, so that the leaching concentration of simulated uranium is consistent with that of the uranium in the actual mine as far as possible, and a theoretical reference basis can be provided for later-stage research. The influence of the liquid injection pressure and the liquid pumping and injecting amount on the ground immersion effect can be analyzed through the computer 43; extracting leaching agent from the monitoring holes 14 of 1# -14# according to a certain time interval, detecting the pH value (uranium can be dissolved out when the pH value is less than 2) of the leaching solution and the concentration change of uranium, ca2+, mg2+, CO32-, HCO3-, SO 42-and other ions through a uranium concentration monitor 42, and obtaining the solute migration rule of the leaching solution in the ore bed. The pressure sensor 41 is used for monitoring the change of the pore water pressure of the horizontal well 12 in the ore body material 11 along the way so as to reasonably adjust the pumping and injection liquid amount and maintain the pumping and injection balance.
The computer 43 can also receive the data monitored by the first flow meter 24, the first pressure gauge 25, the second flow meter 34 and the second pressure gauge 35, and the control of the flow rate and the pressure of the pumping liquid can be adjusted manually, or can be adjusted by the control of the computer 43.
The uranium concentration monitor 42 is an inductively coupled plasma mass spectrometer ICP-MS, and can obtain the uranium concentration in the leaching agent. The computer 43 may be a computer 43 in the prior art, which has functions of calculating data, receiving collected and monitored data, typing and outputting print data, etc., so that the computer 43 in the present application may be operated in coordination with the mining simulation, and the specific functions of the computer 43 will not be discussed.
Monitoring hydraulic pressure drop of the horizontal well 12 along the way by a pressure sensor 41 arranged along the way of the horizontal well 12, and providing basis for reasonably arranging the spatial position of a well pattern and the cutting density of a sieve tube; when the uranium concentration of the leachate is lower than 10mg/t, considering that the leachate enters the final stage of leaching, and only pumping and not injecting the leachate without continuously adding an acid solution until the simulated leaching process is finished; after the leaching is finished, uranium concentration measurement is carried out on the leaching solution, and the recovery ratio is estimated; finally, typical sections (such as a horizontal section where the horizontal well 12 is located and a transverse section where the vertical well 13 is located) of the ore bed are cut, the pore structure and the permeability of the ore are tested, the change of the physical characteristics of the sandstone in the process of leaching the horizontal well 12 is analyzed, and the flow-reaction-mass transfer process of the leaching solution is deeply understood.
As a specific embodiment of the horizontal well immersion mining simulation test system for sandstone uranium deposit provided by the invention, please refer to fig. 1 to 3, water-stop sheets 17 are respectively arranged at the upper part and the lower part of the ore body material 11, the water-stop sheets 17 are mudstone water-stop layers, and the water-stop sheets 17 play a role in preventing water penetration. The vertical wells 13 penetrate through the water-stop sheet 17 on the upper portion and then reach the interior of the ore body material 11, the number of the vertical wells 13 is four according to the size of the box body 15 and the arrangement distance, and the vertical wells 13 are distributed on two sides of the horizontal well 12 and are continuously arranged along the trend of an ore bed.
The invention also provides a sandstone uranium deposit horizontal well immersion mining simulation test method, which comprises the following steps:
arranging ore body materials 11 in the box body, arranging water-stop plates 17 at the upper part and the lower part of the ore body materials 11, arranging a horizontal well 12 along the horizontal direction of the ore body materials 11 and a plurality of vertical wells 13 along the vertical direction, and arranging a plurality of monitoring holes 14 on the ore body materials 11 along the horizontal well;
enabling the liquid injection device 2 to be communicated with one end of a horizontal well 12, injecting a leaching agent into the horizontal well 12 through the liquid injection device 2, and enabling the leaching agent to penetrate into the ore body material 11 and react with uranium in the ore body material 11;
the liquid extracting device 3 is communicated with the upper end of the vertical well 13, the leaching agent which is positioned in the ore body material 11 and reacts with uranium is extracted through the liquid extracting device 3, and the extracted leaching agent is contained in a container;
the horizontal well on-way pore water pressure in a monitoring hole 14 in the ore body material 11 is collected through the collecting and monitoring device 4, and the uranium concentration of the leaching agent in the container pumped out through the liquid pumping device 3 is monitored.
Before the simulation test is started, preparing a container, putting clean water into the container, and cleaning the ore bed of the ore body material 11 by the clean water through a liquid injection device 2; preparing a sulfuric acid solution and water in a container, mixing the sulfuric acid solution and the water to complete the preparation, and injecting the acid solution into an ore bed (an ore-containing aquifer) through an injection device 2 for acidizing the ore bed; finally, H is added into the container 2 O 2 The oxidant is injected into the interior of the ore bed through the liquid injection device 2, and the simulated leaching process is started.
The invention establishes a sandstone uranium ore horizontal well 12-place leaching exploitation simulation experiment system and a sandstone uranium ore horizontal well 12-place leaching exploitation simulation experiment method, which are used for simulating the whole process from drilling, liquid injection, leaching solution seepage migration, chemical reaction with ores to liquid extraction place leaching exploitation, and can monitor the pressure and flow of the leaching solution, the change of ion components of the leaching solution, the leaching range, the permeability of an ore layer, the change of a pore structure of the ore layer, the uranium content of the leaching solution and other information in real time in the whole process.
In the sandstone uranium ore horizontal well ground leaching and mining simulation test method, specific structural settings, specific operation steps and specific operation methods of the leaching device, the liquid injection device, the liquid extraction device and the collecting and monitoring device are all referred to the specific explanation of the sandstone uranium ore horizontal well ground leaching and mining simulation test system, and are not described here.
The sandstone uranium ore horizontal well ground immersion exploitation simulation test system and the test method have the beneficial effects that:
1) An indoor model test of the novel in-situ leaching uranium mining process is developed, in-situ leaching mining of uranium resources is carried out in a mode of liquid injection of a horizontal well 12 and liquid extraction of a vertical well 13, and yield increase effect evaluation of the in-situ leaching process of the horizontal well 12 can be realized;
2) The method can simulate the 12-place leaching extraction process of the sandstone uranium ore horizontal well, and optimize and adjust various influence factors such as injection pressure, injection amount and well pattern arrangement by monitoring the sweep range of leaching solution and the uranium-containing concentration of the leaching solution and exploring the optimal proportioning scheme of the leaching agent;
3) By monitoring the pore pressure of the ore bed, the ion concentration change of the leaching solution, the corrosion effect of the ore bed and the pore change, the flow-reaction-mass transfer rule of the leaching solution in the leaching and exploitation process of the horizontal well 12 can be mastered.
The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (10)
1. Sandstone uranium deposit horizontal well ground flooding adopts analogue test system, its characterized in that includes:
the leaching device comprises an ore body material of a uranium-bearing ore aquifer, a horizontal well and a vertical well, wherein the horizontal well is arranged in the ore body material in a horizontal manner, the vertical well is arranged in a vertical manner, a plurality of monitoring holes are distributed along the way of the horizontal well, one end of the horizontal well is open, the other end of the horizontal well is closed, the ore body material leaks from the open end of the horizontal well and the top end of the vertical well, the top of the vertical well is sealed in a plugging manner, and the monitoring holes are used for monitoring the hydraulic pressure drop effect of the horizontal well along the way and monitoring the seepage range, the pore pressure change and the ion concentration change of leaching solution;
the liquid injection device is communicated with the open end of the horizontal well and is used for injecting a leaching agent into the horizontal well, the leaching agent is immersed into the ore body material through the horizontal well, and the leaching agent comprises a sulfuric acid solution and hydrogen peroxide and is used for simulating a leaching process;
the liquid extraction device is communicated with the top end of the vertical well and is used for extracting a leaching agent which is positioned in the ore body material and reacts with uranium through the vertical well; and
and the acquisition monitoring device is used for acquiring the on-way pore water pressure of the horizontal well in the ore body material through the plurality of monitoring holes and monitoring the uranium concentration in the leaching agent pumped out by the liquid pumping device.
2. The leaching simulation test system for horizontal sandstone uranium deposit well, according to claim 1, wherein the leaching device further comprises a box body with an opening at the upper end and capable of seeing the internal structure, the ore body material is arranged in the box body, and filters for filtering sand are arranged in the horizontal well and the vertical well.
3. The sandstone uranium deposit horizontal well land dip production simulation test system of claim 1, wherein the liquid injection device comprises:
a liquid distribution tank for containing the leaching agent;
the two ends of the liquid injection pipeline are respectively communicated with the liquid distribution box and the open end of the horizontal well and used for conveying a leaching agent into the horizontal well; and
and the liquid injection pump is arranged on the liquid injection pipeline and used for pumping the leaching agent into the horizontal well.
4. The leaching and mining simulation test system for the sandstone uranium deposit horizontal well as defined in claim 3, wherein the injection device further comprises a first flow meter and a first pressure gauge which are arranged on the injection pipeline, the first flow meter is used for monitoring the injection flow rate of the leaching agent in the injection pipeline, and the first pressure gauge is used for monitoring the injection pressure of the leaching agent in the injection pipeline.
5. The sandstone uranium deposit horizontal well ground leaching simulation test system of claim 3, wherein the liquid injection device further comprises a stirrer arranged in the liquid distribution box, and the stirrer is used for stirring liquid in the liquid distribution box.
6. The sandstone uranium deposit horizontal well ground leaching simulation test system of claim 1, wherein the pumping device comprises:
a liquid collection tank for containing a leaching agent that reacts with uranium within the ore body material;
the two ends of the liquid pumping pipeline are respectively communicated with the top end of the vertical shaft and the liquid collecting pool and are used for conveying a leaching agent for reaction into the liquid collecting pool; and
and the liquid pumping pump is arranged on the liquid pumping pipeline and is used for pumping out the leaching agent which is reacted with the uranium in the ore body material.
7. The sandstone uranium ore horizontal well ground leaching simulation test system of claim 6, wherein the liquid pumping pipeline is further provided with a second flow meter and a second pressure gauge, the second flow meter is used for monitoring the leaching agent pumping flow rate in the liquid pumping pipeline, the second pressure gauge is used for monitoring the leaching agent pumping pressure in the liquid pumping pipeline, and the liquid pumping device further comprises a back pressure valve arranged on the liquid pumping pipeline.
8. The sandstone uranium deposit horizontal well land leaching production simulation test system of claim 1, wherein the collection monitoring device comprises:
the pressure sensors are arranged in the monitoring holes and used for acquiring the on-way pore water pressure of the horizontal well in the ore body material;
the uranium concentration monitor is used for monitoring the uranium concentration in the leaching agent pumped by the liquid pumping device; and
and the computer is respectively electrically connected with the pressure sensors and the uranium concentration monitor and is used for receiving a plurality of pressure signals of the pressure sensors and receiving concentration signals of the uranium concentration monitor and displaying the signals.
9. The sandstone uranium ore horizontal well ground leaching simulation test system of claim 2, wherein water baffles are arranged on the upper part and the lower part of the ore body material.
10. The sandstone uranium ore horizontal well ground leaching production simulation test method is characterized by comprising the following steps:
arranging ore body materials in the box body, arranging water-stop plates at the upper part and the lower part of the ore body materials, arranging a horizontal well along the horizontal direction of the ore body materials and a plurality of vertical wells along the vertical direction, and arranging a plurality of monitoring holes on the ore body materials along the horizontal well;
enabling the liquid injection device to be communicated with one end of the horizontal well, injecting a leaching agent into the horizontal well through the liquid injection device, and enabling the leaching agent to penetrate into the ore body material and react with uranium in the ore body material;
the liquid extraction device is communicated with the upper end of the vertical well, and the leaching agent which is positioned in the ore body material and reacts with the uranium is extracted through the liquid extraction device, so that the extracted leaching agent is contained in the container;
and collecting the on-way pore water pressure of a horizontal well in a monitoring hole in the ore body material and monitoring the uranium concentration of the leaching agent in the container pumped out by the liquid pumping device by the collecting and monitoring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011519265.4A CN112627795B (en) | 2020-12-21 | 2020-12-21 | Sandstone uranium ore horizontal well ground immersion exploitation simulation test system and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011519265.4A CN112627795B (en) | 2020-12-21 | 2020-12-21 | Sandstone uranium ore horizontal well ground immersion exploitation simulation test system and test method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112627795A CN112627795A (en) | 2021-04-09 |
| CN112627795B true CN112627795B (en) | 2023-01-17 |
Family
ID=75320722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011519265.4A Active CN112627795B (en) | 2020-12-21 | 2020-12-21 | Sandstone uranium ore horizontal well ground immersion exploitation simulation test system and test method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112627795B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114000859B (en) * | 2021-10-25 | 2022-11-08 | 紫金矿业集团股份有限公司 | Mining device and mining method based on leaching mining method |
| CN114152732A (en) * | 2021-12-15 | 2022-03-08 | 石家庄铁道大学 | Sandstone uranium mine ground immersion mining simulation test device |
| CN114152731A (en) * | 2021-12-15 | 2022-03-08 | 石家庄铁道大学 | Uranium ore carbon dioxide blasting and carbon dioxide and oxygen ground immersion mining test device |
| CN114439451A (en) * | 2022-01-19 | 2022-05-06 | 北京科技大学 | System for collecting leaching solution and lifting to ground surface and using method |
| CN114562248A (en) * | 2022-03-14 | 2022-05-31 | 杭州英普环境技术股份有限公司 | Automatic centralized dissolved oxygen injection system for in-situ leaching uranium mining |
| CN115075797B (en) * | 2022-07-22 | 2023-06-13 | 核工业北京化工冶金研究院 | Well spacing determination method and system for high-permeability sandstone uranium/copper ore on-site leaching exploitation |
| CN115786745A (en) * | 2022-12-02 | 2023-03-14 | 中核内蒙古矿业有限公司 | In-situ leaching uranium mining leaching method |
| CN116335622B (en) * | 2023-03-17 | 2024-01-23 | 核工业北京化工冶金研究院 | Method and system for arranging and production regulation and control of in-situ leaching uranium mining well pattern |
| CN117189067B (en) * | 2023-11-07 | 2024-02-09 | 核工业北京化工冶金研究院 | On-site leaching uranium mining test device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101800000A (en) * | 2009-10-30 | 2010-08-11 | 中国石油天然气股份有限公司 | Natural gas exploitation simulator of multi-angle horizontal branch well |
| CN103711462A (en) * | 2012-10-09 | 2014-04-09 | 核工业北京化工冶金研究院 | Leaching experimental facility for in-situ leaching uranium mining |
| CN105506275A (en) * | 2015-12-15 | 2016-04-20 | 东华理工大学 | Flow uranium leaching system and flow uranium leaching process |
| CN106437644A (en) * | 2016-09-14 | 2017-02-22 | 中国石油大学(华东) | Large bottom water sandstone oil reservoir development physical simulation experiment device and working method thereof |
| CN106930747A (en) * | 2017-01-24 | 2017-07-07 | 核工业北京化工冶金研究院 | A kind of ground-dipping uranium extraction well net optimization recombination method |
| CN109828100A (en) * | 2019-03-18 | 2019-05-31 | 南华大学 | One kind being directed to hyposmosis uraniferous sandstone anatonosis leaching test system |
| CN110043261A (en) * | 2019-05-21 | 2019-07-23 | 安徽理工大学 | A kind of coal uranium harmonic extraction perspectiveization physical simulating device and application method |
| CN110295901A (en) * | 2019-07-30 | 2019-10-01 | 核工业北京化工冶金研究院 | A kind of mining using leaching technology method and system |
| CN110836790A (en) * | 2019-11-18 | 2020-02-25 | 核工业北京化工冶金研究院 | Multi-channel automatic measuring device and method for centralized control room of in-situ leaching uranium mining area |
| CN111855902A (en) * | 2020-06-28 | 2020-10-30 | 北京科技大学 | Experimental device and method for simulating in-situ fluidized mining of deep metal ore |
-
2020
- 2020-12-21 CN CN202011519265.4A patent/CN112627795B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101800000A (en) * | 2009-10-30 | 2010-08-11 | 中国石油天然气股份有限公司 | Natural gas exploitation simulator of multi-angle horizontal branch well |
| CN103711462A (en) * | 2012-10-09 | 2014-04-09 | 核工业北京化工冶金研究院 | Leaching experimental facility for in-situ leaching uranium mining |
| CN105506275A (en) * | 2015-12-15 | 2016-04-20 | 东华理工大学 | Flow uranium leaching system and flow uranium leaching process |
| CN106437644A (en) * | 2016-09-14 | 2017-02-22 | 中国石油大学(华东) | Large bottom water sandstone oil reservoir development physical simulation experiment device and working method thereof |
| CN106930747A (en) * | 2017-01-24 | 2017-07-07 | 核工业北京化工冶金研究院 | A kind of ground-dipping uranium extraction well net optimization recombination method |
| CN109828100A (en) * | 2019-03-18 | 2019-05-31 | 南华大学 | One kind being directed to hyposmosis uraniferous sandstone anatonosis leaching test system |
| CN110043261A (en) * | 2019-05-21 | 2019-07-23 | 安徽理工大学 | A kind of coal uranium harmonic extraction perspectiveization physical simulating device and application method |
| CN110295901A (en) * | 2019-07-30 | 2019-10-01 | 核工业北京化工冶金研究院 | A kind of mining using leaching technology method and system |
| CN110836790A (en) * | 2019-11-18 | 2020-02-25 | 核工业北京化工冶金研究院 | Multi-channel automatic measuring device and method for centralized control room of in-situ leaching uranium mining area |
| CN111855902A (en) * | 2020-06-28 | 2020-10-30 | 北京科技大学 | Experimental device and method for simulating in-situ fluidized mining of deep metal ore |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112627795A (en) | 2021-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112627795B (en) | Sandstone uranium ore horizontal well ground immersion exploitation simulation test system and test method | |
| CN216665589U (en) | Sandstone uranium ore horizontal well ground immersion exploitation simulation test system | |
| CN106522935B (en) | Test the method for determining the distribution of carbonate rock hydrocarbon reservoir acid fracturing fracture condudtiviy | |
| CN103114827B (en) | Multi-scenarios method coal bed gas extraction simulation experiment method | |
| CN110055414B (en) | Seepage control in-situ mining method for ionic rare earth | |
| CN106437644A (en) | Large bottom water sandstone oil reservoir development physical simulation experiment device and working method thereof | |
| CN102560099B (en) | Tandem column soak test device | |
| MXPA06010717A (en) | Remedial heap treatment. | |
| CN113051843B (en) | Sandstone type uranium deposit CO 2 +O 2 Reaction migration numerical simulation method for in-situ leaching uranium mining | |
| CN105463218B (en) | Using CO2+O2To the experimental rig and test method of the leaching of uranium ore pressured column | |
| CN106381405B (en) | A kind of Rare-earth Mine liquor collecting system and method | |
| CN106930738A (en) | Hydrochloric acid improves layer of sand permeability ground-dipping uranium extraction leaching technology | |
| CN111622269B (en) | Method for preventing and controlling pollution of ion type rare earth shallow groundwater | |
| CN113338875A (en) | Method for increasing permeability of unconsolidated sandstone reservoir by using carbon dioxide-water solution | |
| CN105405347B (en) | Inland water-bearing system saline water and fresh water interaction displacement simulation device and method | |
| CN107858536B (en) | Ion type rareearth full-covering type mine in_situ leaching Hole pattern parameters design method | |
| CN106706885A (en) | Calculating method of distribution of volumetric water content around liquid injection hole for in situ leaching of ion type rare earth | |
| CN113685175B (en) | Method and device for underground depth-fixing in-situ comprehensive experiment | |
| CN106930764A (en) | Multilayer sandstone-type uranium mineralization with respect separate zone production technique | |
| CN114183118A (en) | Infiltration mining method and device for infiltration-increasing area of low-permeability sandstone uranium ore and terminal equipment | |
| WO2018098845A1 (en) | Rotary jet-grouting modular rare-earth mining process | |
| CN103643920A (en) | Unconventional gas extraction visual simulator and extraction simulation method thereof | |
| CN107858537B (en) | Ion type rareearth naked foot formula mine in_situ leaching Hole pattern parameters design method | |
| CN217327297U (en) | Underground fluid migration simulation experiment system | |
| CN115822548A (en) | Rapid mining method for sandstone-type uranium resources in uranium coal superposition area |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220507 Address after: 050043 No. 17, North Second Ring Road, Hebei, Shijiazhuang Applicant after: SHIJIAZHUANG TIEDAO University Applicant after: China Nuclear Mining Technology Group Co.,Ltd. Applicant after: XINJIANG TIANSHAN URANIUM INDUSTRY CO.,LTD. CNNC Address before: 050043 No. 17, North Second Ring Road, Hebei, Shijiazhuang Applicant before: SHIJIAZHUANG TIEDAO University Applicant before: China Nuclear Mining Technology Group Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |