146 results about "Uranium ore" patented technology

The invention discloses a radioactive measurement data processing method for improving uranium exploration efficiency. The method comprises the following steps: standardized data acquisition: integrating a multi-parameter module, carrying out time-space synchronous acquisition of geological geophysical environment parameters, standardizing protocol alignment data, and supporting three-dimensional modeling; a three-dimensional coupling model is used for processing interference in a sub-module mode, LiDAR-DEM is used for correcting gamma attenuation in the terrain, an optical fiber thermopermeability instrument is used for correcting daughter errors in the hydrology, signal attenuation of a borehole is compensated through a drilling fluid chart, and a space-time continuous interference field is formed; performing dynamic equilibrium coefficient inversion: constructing equilibrium coefficient isoparametric mapping, and inputting rock core, logging and geochemical data into a random forest model; the transfer learning is trained by using historical data, and dynamic inversion and updating of a new area are carried out; intelligent data processing three-dimensional visualization: self-adaptive denoising and spectral shape matching reinforcement abnormity are carried out; constructing a three-dimensional model, and carrying out transfer learning to optimize the precision; the WebGL platform integrates multi-parameter display, virtual drilling functions and high-dimensional data intuitive interpretation.

The invention discloses a low-permeability sandstone type uranium mine single-well injection and production method, and belongs to the technical field of in-situ leaching uranium mining. The method comprises the steps that an injection and production well is drilled from the ground to a uranium mine layer; pumping liquid carbon dioxide into the uranium ore layer and soaking; a leaching agent is injected into the uranium ore layer in stages, and soaking is carried out every time the leaching agent is injected; extracting the leachate until the uranium concentration in the leachate is reduced by 10% compared with the initial concentration or the uranium concentration in the leachate is reduced to the preset concentration; carbon dioxide and a leaching agent are supplemented into tail liquid formed after uranium recovery is conducted on the leachate, the tail liquid reaches a saturated state, and the tail liquid in the saturated state is reinjected into the uranium ore layer; and a cycle operation step.

The invention discloses an oxidation leaching system and method for argillaceous sandstone uranium ore. The system comprises a uranium leaching pool, a recovery pool, a liquid preparation-dosing unit pool and an intermediate pool. Wherein the uranium leaching tank is provided with a water dispersing layer, a uranium ore layer and a liquid collecting layer from top to bottom, and efficient oxidation of uranium ore is achieved through coupling of oxygen and ferric iron; the recovery pool is sequentially provided with a resin adsorption layer and a water inlet layer from top to bottom, and efficient recovery of uranium in the leachate is achieved; the liquid preparation-dosing unit pool is provided with an acid-resistant submersible sewage pump used for circularly conveying the ore leaching liquid to the uranium leaching pool and adjusting the pH value of the ore leaching liquid and the initial concentration of Fe < 3 + >. And the middle tank drives the ore leaching liquid to form periodic tidal flow circulation in the uranium leaching tank through an acid-resistant submersible sewage pump. According to the system and the method, tidal flow regulation and control, aeration oxygen supply enhancement and iron ion circulation oxidation technologies are coupled, and the uranium leaching rate gt of the argillaceous sandstone uranium ore is achieved by establishing a multi-stage oxidation field domain, optimizing a fluid migration path and establishing an iron element regeneration mechanism; 92%.

The invention discloses a method for one-step electrifying extraction and separation of uranium elements from sandstone uranium ores, which comprises the following steps: adjusting the pH value of an activation environment to be less than or equal to 3 by using an activation leaching agent, and converting the uranium elements in the sandstone uranium ores into uranyl with positive charges and complexes thereof; and a direct-current electric field with the voltage gradient of 0.1-2 V / cm is applied between the cathode and the anode, so that the uranium element moves towards the cathode chamber under the action of the electric field and is selectively reduced on the cathode, and the uranium element is reduced into a low-valence insoluble uranium-containing substance through electrons to be precipitated on the surface of the cathode. According to the method, uranium ions only forming positive charges and complexes of the uranium ions are activated and leached, and the uranium element directionally moves towards the cathode under the electrophysical actions of electromigration, electroosmosis and the like, so that the extraction of the uranium element in the sandstone uranium ore is realized; and meanwhile, soluble uranium is reduced and fixed on the surface of the cathode conductive plastic electrode through electrochemical actions such as reduction generated by electrons on the surface of the cathode conductive plastic electrode, so that one-step separation and purification of the uranium element are realized.

The invention relates to the technical field of in-situ leaching mining of low-permeability sandstone type uranium ore, in particular to a prediction method for the in-situ leaching effect of the low-permeability sandstone type uranium ore. And constructing a single-hole blasting physical model, and simulating the change of the radiuses of the crushed region and the fractured region of the uranium mine by updating a non-coupling coefficient. Thirdly, constructing a multi-physics field coupling model, including a geometric model, rock parameter definition, initial and boundary condition setting, introduction of a fracture geometric model, and simulation of in-situ leaching uranium concentration and uranium recovery rate change curves after blasting permeation enhancement; the multi-physical field model covers a dilute material transfer field, a Darcy seepage field and a chemical field. And based on the uncoupling coefficients corresponding to the uranium concentration and the uranium recovery rate peak value, determining the optimal uncoupling coefficient, further constructing an HJC field scale blasting model, adjusting blasting parameters, and optimizing the uranium mine crack expansion condition and the in-situ leaching effect. And finally, in combination with the optimal blasting parameter, analyzing the influence of different in-situ leaching parameters on the in-situ leaching process, and optimizing the reaction rate, so that the whole process optimization is realized, and the in-situ leaching efficiency is improved.

The invention belongs to a jet well washing process, and particularly relates to a high-pressure hydraulic jet well washing process for an in-situ leaching uranium mining layer. The in-situ leaching uranium mining layer high-pressure hydraulic jet well washing process comprises the following steps: step 1, drifting a well; step 2, ground testing; thirdly, a cleaning tool string is assembled and cleaned; and 4, pulling out of the hole. The high-pressure hydraulic jet well washing method has the advantages that 40 liquid pumping holes are cleaned in total in high-pressure hydraulic jet well washing, and in follow-up test effect tracking, the water quantity of 16 drilled wells (40%) is increased to 1.5 m < 3 > / h, and the maintaining time is longer than 150 d; when the liquid injection hole is removed, the effect of the hole washing mode is far better than that of a liquid pumping hole, the water amount is increased by 1.3 m < 3 > / h, and the maintaining time is only 32.5 d.

The invention provides a uranium-containing ore pulp efficient electro-Fenton activation leaching material based on peat and pyrite and an activation method, and belongs to the fields of inorganic nanometer material application and uranium purification and conversion. According to the leaching material, woody peat and natural pyrite particles are subjected to ball milling, so that uniform mixed powder is obtained, then reaction is conducted under the hydrothermal condition, steam chambering and activating treatment is conducted under the high-temperature condition, and the modified peat-pyrite iron-containing nano composite material with good catalytic activity is prepared; the material can effectively promote generation of an oxidizing agent in an electro-Fenton reaction, so that oxidation and dissolution of uranium are accelerated, U (IV) in uranium ore is rapidly converted into U (VI) with higher mobility, and the material has the advantages of being high in uranium resource recovery rate, small in environmental pollution, economical, applicable and the like, is suitable for efficient activation of uranium-containing ore pulp and has good application prospects. And an effective scheme is provided for sustainable development of uranium resources.

The invention discloses an argillaceous sandstone uranium ore leaching method and device based on a recyclable activation material, and relates to the technical field of uranium ore resource development. The preparation method of the recyclable activated material comprises the following steps: adding WS2 and Fe3O4 into an aqueous solution, uniformly stirring, adding a boron-containing compound, a fluorine-containing precursor aqueous solution and a nitrogen-oxygen-containing compound, uniformly stirring, heating, stirring for reaction, filtering, washing and drying to obtain a precursor; and calcining the precursor in a protective atmosphere to obtain F / O co-doped h-BN / WS2 / Fe3O4 which is used as a recoverable activation material. The obtained recoverable activated material has good catalytic performance, can be widely applied to preparation of a catalyst for leaching uranium from argillaceous sandstone uranium ore, and can generate strong turbulence, secondary circulation and near-wall shear force for high-viscosity ore pulp and efficiently excite the catalytic activity of a piezoelectric material in cooperation with the device provided by the invention.

The invention provides a uranium ore in-situ leaching solute transport regulation and control method and system based on three-dimensional geological modeling. According to the method, the high-frequency pressure data of the liquid injection well are obtained and combined with the three-dimensional geologic model to construct the permeability distribution field, and the abnormal high-pressure blocking coordinate set is extracted. Magnetic anomaly signals caused by iron ion concentration changes of the leaching agent are synchronously collected, the space gradient of the magnetic anomaly signals is converted into a solute transport trajectory diagram, and a solute diffusion lag map is constructed based on the trajectory diagram. And further extracting a lagging boundary coordinate set, and performing space matching with the abnormal high-voltage blocking coordinate set to generate a blocking retention incidence matrix. And dynamically adjusting a liquid injection well pressure gradient distribution strategy according to the matrix, and generating a pumping and injection flow adjusting instruction to inhibit a leaching dead angle. According to the technical scheme provided by the invention, the efficiency and precision of uranium ore in-situ leaching solute transport regulation and control can be improved.

An efficient multiphase-flow graded-separation, concentration, and purification system for argillaceous sandstone uranium ore includes a hydraulic tossing washing and scattering pretreatment device, a high-frequency linear vibration grading device, a first-stage multiphase-flow swirling grading device, an energy-gathering ultrasonic scrubbing device, a second-stage multiphase-flow swirling grading device, a high-frequency linear vibration dewatering device, an efficient uniform-mixing and activating system and a conditioning and pressing dewatering system. The present disclosure implements intensive mud-sand stripping of crushed argillaceous sandstone uranium ore, fine graded-separation of material, and efficient uniform-mixing and activating and deep efficient dewatering of fine-particle argillaceous material. Finally, four types of core material of coarse sand material, fine sand material, dry tailings residue and a high-concentration uranium ore leaching solution are formed through continuous work. Efficient multiphase-flow graded-separation, concentration and purification of the argillaceous sandstone uranium ore are implemented, and an intensive extraction rate of uranium ore resources is improved.

The invention discloses a uranium-radium balance correction method, device, medium and equipment, and relates to the field of sandstone type uranium mine uranium exploration, and the method comprises the steps: obtaining an industrial uranium mine hole, carrying out the geophysical logging of the industrial uranium mine hole, determining a mineralized section through quantitative gamma interpretation, and carrying out the geological logging and geophysical exploration logging of a rock core, uranium and radium samples are collected and analyzed in the mineralization section; uranium fission instant neutron logging is carried out on the mineralization section, and the uranium ore section depth range is determined according to the ratio of the epithermal neutron time spectrum to the thermal neutron time spectrum of uranium fission instant neutron logging; according to the uranium radium sample analysis result of the mineralization section, determining a single sample section uranium radium balance coefficient, and according to the single sample section uranium radium balance coefficient, determining a single engineering uranium radium balance coefficient; determining a uranium radium balance coefficient partition map according to the single-project uranium radium balance coefficient; and correcting the quantitative gamma logging curve in the uranium ore section depth range of uranium instantaneous neutron logging by utilizing the coefficients in different uranium-radium balance regions to obtain the actual depth range, thickness and grade of the uranium ore section.

The embodiment of the invention relates to a method or a device for identifying by using electronic equipment, in particular to a method for identifying exudation type sandstone uranium ore, which comprises the following steps: S10, acquiring an ore sample of a to-be-identified area, S20, analyzing the ore sample according to the output position and color in the vertical direction and the horizontal direction, and S20, analyzing the output position and color of the ore sample according to the output position and color of the to-be-identified area and the output position and color of the to-be-identified area. S30, analyzing the uranium mineral symbiotic combination in the ore sample; s40, analyzing the clay mineral combination in the ore sample; s50, analyzing an element combination related to the uranium element in the ore sample; and according to the analysis, determining that the to-be-identified region is the exudation type sandstone uranium mine. According to the identification method provided by the embodiment of the invention, the exudation type sandstone uranium ore formed by exudation mineralization can be systematically identified, so that the exudation type sandstone uranium ore prospecting can be guided, and help is provided for searching new uranium ore resources.

The invention discloses a method for electrifying and extracting a uranium element from sandstone uranium ore, which comprises the following steps: adjusting the pH value of an activation environment to be less than or equal to 4 by using an activation leaching agent, and converting the uranium element in the sandstone uranium ore into uranyl with positive charges and a complex thereof; wherein the activation leaching agent is a mixed solution of FeCl3 and chlorine-containing inorganic acid; the sandstone uranium ore is activated and then introduced into a direct-current electric field, direct current with the voltage gradient of 1-4 V / cm is applied, the uranium element moves towards a cathode directionally under the action of the electric field, and uranium-rich leachate is collected at the cathode. According to the method, the uranium element in the sandstone uranium ore is controlled to only form positive charge ions and complexes, the use amount of the leaching agent is reduced, the leaching rate of the uranium element is increased, and the collection time of the uranium element is shortened, so that the purpose of extracting the uranium element in the sandstone uranium ore more efficiently and greenly is achieved.

The invention discloses a method for in-situ leaching mining of sandstone uranium ore, the concentration of bicarbonate radical ions in ore bed water in the sandstone uranium ore is lower than 0.5 g / L, the sandstone uranium ore comprises yttrium-containing uranium ore, and the carbonate content is 1.5%-2.5%; the ore bed water serves as a solvent, 500 mL of leaching agents with different pH values adjusted through sulfuric acid are prepared, and the concentration of hydrogen peroxide in the leaching agents is 2 g / L; and determining the maximum pH value when the uranium ore in the slice sample is corroded by using the leaching agents with different pH values, and taking the maximum pH value as a critical pH value. The leaching agent with the critical pH value is used for exploiting the sandstone uranium ore, corrosion to gangue minerals in the leaching process can be reduced, the number of formed colloids and CaSO4 precipitates is reduced, the precipitates are prevented from blocking an ore bed, in addition, the method can be used for target corrosion of the refractory uranium ore, and therefore efficient leaching is achieved.

The invention relates to the technical field of uranium ore resource exploration and general survey, and provides a sandstone type uranium ore metallogenic prediction method, device, equipment and medium, and the method comprises the steps: obtaining remote sensing data and topographic data of a target operation area; geological information of the target operation area is determined based on the data; judging whether lithology capable of providing uranium mine exists in the target operation area based on the lithology information; if yes, determining uranium mine dispersion data based on the topographic data, the lithologic information and the environmental information; simulating a uranium mine dispersion process according to the topographic data and the uranium mine dispersion data by using a fluid dynamic model, and determining a uranium mine dispersion range map; determining a uranium ore precipitation area of the target operation area based on the environment information; and determining the uranium ore distribution condition of the target operation area based on the uranium ore dispersion range map and the uranium ore precipitation area. According to the embodiment of the invention, the remote sensing technology, the topographic data and the hydrodynamic model are comprehensively utilized, so that scientific prediction of the ore-forming process of the sandstone type uranium ore is realized, and the uranium ore exploration efficiency and accuracy are remarkably improved.

The invention provides an online diagnosis and repair method for a uranium mine gamma ray monitoring device, and the method comprises the steps: determining the respective counting rate correction values of a plurality of detectors based on the current working temperature of the uranium mine gamma ray monitoring device, a preset temperature compensation model, and the counting rate detection values of the plurality of detectors; based on the respective counting rate correction values of the plurality of detectors, the detection efficiency of each detector is determined, and the detection efficiency comprises static detection efficiency and dynamic detection efficiency; and if the detection efficiency of any first detector in the plurality of detectors is deviated from the detection efficiency of a specified second detector in the plurality of detectors, circuit parameters of the first detector are adjusted based on the deviation, so that the detection efficiency of the first detector after the circuit parameters are adjusted is consistent with the detection efficiency of the second detector. According to the technical scheme, the measurement precision and the detection efficiency of the uranium ore gamma ray monitoring device in continuous operation are improved, and the uranium ore sorting energy efficiency is improved.

The invention discloses a coal-uranium collaborative mining circulation supply mining system and an application method, and particularly relates to the technical field of coal-uranium mining and a geological institution.The geological institution comprises a surface layer, a uranium layer, a coal seam and underground runoff, the surface layer is located above the uranium layer, the uranium layer is located above the coal seam, and the underground runoff is located above the coal seam. The underground runoff is located between the surface layer and the uranium layer; and the ground mining mechanism comprises an injection well, an extraction well, a leaching solution preparation tank, a uranium comprehensive treatment bin, a liquid injection pump, a liquid extraction pump, a liquid injection pipe and a liquid extraction pipe. According to the method, partition isolation and staged collaborative proceeding of uranium mine in-situ leaching mining and coal mining are achieved by planning the barrier infiltration reduction mechanism, the overall recovery efficiency of uranium and coal resources is improved, the pollution risk of uranium-containing leachate discharge to the environment is reduced, underground water resources are fully recycled, and the method has the advantages of being environmentally friendly, efficient and safe.

The invention discloses a well logging exploring tube fishing device for uranium exploration, and belongs to the technical field of uranium exploration, the well logging exploring tube fishing device comprises a fishing tube, a driving assembly, a plurality of clamping assemblies, a blocking assembly and a plurality of limiting assemblies, the fishing tube comprises a tube body, and a plurality of first storage grooves and a plurality of second storage grooves are formed in the tube body; a plurality of cavities are formed in the pipe body; the driving assembly comprises a pull plate and a plurality of pull rods; according to the device, when a probe tube enters the salvage tube, a plurality of pull rods are pulled upwards through a steel wire rope, the pull rods moving upwards drive a plurality of first racks to move upwards through a pull plate, and the first racks moving upwards drive a plurality of clamping plates to get close to one another through a plurality of connecting rods; the clamping plates close to one another make close contact with the outer surface of the exploring tube, at the moment, the exploring tube is fixed in the salvage tube, operation is convenient and fast, and the exploring tube in the salvage tube can be automatically fixed only by pulling the pull rod to move upwards.

The invention discloses a uranium separation and extraction method for hydrocarbon-containing sandstone uranium ore. According to the main technical scheme, a rock sample is pretreated to obtain a mixed ore sample, the mixed ore sample is loaded into a high-pressure column, a high-pressure kettle and a gas cylinder are prepared, an HCO3 <-> leaching solution is prepared in the high-pressure kettle, and the gas cylinder is filled with CO2 and O2 mixed gas; a gas cylinder, a high-pressure kettle and a high-pressure column are connected in series, and a uranium separation and extraction and petroleum hydrocarbon removal test device is constructed; introducing mixed gas into the high-pressure kettle by using a gas cylinder, and setting the gas pressure in the high-pressure kettle; starting the test device, injecting the HCO3 <-> leaching solution into the high-pressure column under the power provided by the gas pressure in the high-pressure kettle, starting to perform uranium separation and extraction on the mixed ore sample, and simultaneously removing hydrocarbon substances in the mixed ore sample. Uranium in the hydrocarbon-containing sandstone uranium ore is separated and extracted through CO2 + O2 + HCO3-synergistic leaching and pressure regulation and control, hydrocarbon substances are removed at the same time, interference of accumulation of the hydrocarbon substances on uranium separation and extraction is reduced, ore permeability is improved, and the problem of uranium leaching in the hydrocarbon-containing sandstone uranium ore is solved.

The application discloses a same-position integrated double neutron detector, a logging instrument and an application method, and belongs to the field of uranium ore exploration logging. The double neutron detector comprises first and second scintillation crystals which are both sensitive to thermal neutrons and are arranged in a face-to-face manner, a photoelectric converter and a supporting portion; the first and second scintillation crystals and the photoelectric converter are arranged along the same axis to form a detection portion which is read out by a common light path, and the supporting portion is fixedly arranged outside the detection portion and supports the detection portion to be an integral component; a slow moderation layer is arranged on the outer wall surface of the first scintillation crystal except the bonding area; the logging instrument is provided with the double neutron detector, and the first and second scintillation crystals are calibrated in the same thermal neutron field during application; the spatial consistency error is eliminated through the same-position design of the double scintillation crystals; the hardware structure of the detector electronics is simplified through the common light path reading out design; and the detector module is convenient to integrate.

This invention discloses a beneficiation method for iron, boron, and uranium minerals in uranium-boron iron ore, which has the following characteristics: 1. The three-stage closed-circuit crushing product is laminated and pulverized using a high-pressure roller mill, so that the -5mm particle size content in the crushed product is greater than 70%. By utilizing the technology of multiple crushing and less grinding, the energy consumption of beneficiation can be reduced and the grinding efficiency can be improved; 2. Iron concentrate is obtained by staged grinding and staged magnetic separation. The tailings of iron beneficiation, such as the tailings of coarse magnetic separation, primary magnetic separation, and secondary magnetic separation, are subjected to stepwise gravity separation to obtain uranium concentrate and boron concentrate in stages, thereby improving the recovery rate of B2O3 and U in the boron and uranium concentrates and comprehensively utilizing iron, boron, and uranium resources; 3. The uranium minerals in the iron beneficiation tailings are separated by a combination of Nelson centrifugal concentrator, shaking table, and suspended cone concentrator, thereby improving the U recovery rate in the uranium concentrate. The Nelson centrifugal concentrator can be used for roughing of uranium minerals, the suspended cone concentrator can recover fine-grained uranium minerals, and the shaking table can recover relatively coarse-grained uranium minerals.

The invention discloses a method for judging interlayer oxidation intensity of lower chalkbroth sandstone based on three-phase clay minerals, and relates to the technical field of uranium mine geological exploration. Obtaining a three-phase clay mineral combination index calculation formula; the calculation formula of the three-phase clay mineral combination index represents the relationship between the mineral content of the chalkline sandstone under the three-phase clay minerals and the three-phase clay mineral combination index; obtaining the content of illite, illite-montmorillonite mixed layer minerals and chlorite in the lower chalkbroth system sandstone sample, and substituting the content of illite, illite-montmorillonite mixed layer minerals and chlorite into a three-phase clay mineral combination index calculation formula to obtain the three-phase clay mineral combination index of the lower chalkbroth system sandstone sample; and determining the oxidation intensity category corresponding to the three-phase clay mineral combination index of the lower chalkbroth system sandstone sample as an oxidation intensity classification result of the lower chalkbroth system sandstone sample. The method can be used for accurately judging the interlayer oxidation intensity of the chalkbroth sandstone.

The invention relates to the technical field of uranium mine mining, in particular to a uranium mine underground stope uranium mining leaching method which comprises the steps that S1, a target uranium ore body is confirmed; s2, liquid distribution roadways and liquid distribution pipes are constructed, the multiple liquid distribution roadways are formed between a top plate of the target uranium ore body and the uranium ore layer, the trend of the liquid distribution roadways is consistent with the trend of the target uranium ore body, the liquid distribution pipes are installed in the liquid distribution roadways, and multiple liquid distribution holes facing the uranium ore layer are formed in the liquid distribution pipes; s3, a liquid collection system is constructed, and a liquid collection pool is formed between a bottom plate of the target uranium ore body and the uranium ore layer; s4, automatic control is configured and used for monitoring and adjusting the flow and pressure of the leachate entering the liquid distribution pipes in real time; and a second automatic control pipeline is communicated between the liquid collecting tank and the sedimentation tank. The uranium mining leaching method is suitable for a uranium mine underground stope, uranium ore does not need to be carried, the effect that the leachate circularly enters the uranium ore layer is achieved till the uranium-containing ion concentration in the leachate reaches the qualified leachate standard, and the uranium recovery rate is increased.

The application provides an injection and leaching integrated in-situ leaching uranium method, and belongs to the technical field of uranium mining, which is used for solving the problems of low leaching efficiency and poor economy of in-situ leaching uranium. The injection and leaching integrated in-situ leaching uranium method comprises the following steps: determining a well site arrangement mode through numerical simulation, and performing drilling operation of pumping wells according to the arrangement mode; determining an injection pressure according to a theoretical value and an actual value of a formation breakdown pressure; sequentially injecting carbon dioxide, water, oxygen and water into a first group of pumping wells; performing a soaking operation on the first group of pumping wells, and simultaneously performing an injection operation on a second group of pumping wells; performing a soaking operation on the second group of pumping wells, and simultaneously performing a pumping operation on the first group of pumping wells and an injection operation on a third group of pumping wells. The injection and leaching integrated in-situ leaching uranium method can improve production efficiency and recovery rate.

The invention discloses an argillaceous sandstone uranium ore particle size gradient grading method based on online particle size detection. The method comprises the following steps: ore crushing; first-stage rotational flow classification is carried out, and the classification cutting particle size is N1; scrubbing and stripping; second-stage rotational flow classification is carried out, and the classification cutting particle size is N2; on-line sampling and particle size detection are carried out at an overflow port of the first-stage swirling flow field and an overflow port of the second-stage swirling flow field, when particles larger than N2 are lower than M1, materials are conveyed to a fine ore pulp storage pool, otherwise, the materials return to a primary pulp pool or are scrubbed and stripped, and the pulp inlet pressure of a slurry pump is adjusted; on-line sampling and particle size detection are carried out at an underflow port of a second-stage swirling flow field, when particles smaller than N2 are smaller than M2, high-frequency linear dehydration is carried out after the materials are output, otherwise, scrubbing and stripping are carried out, and the slurry inlet pressure of a second-stage slurry pump and the size of the underflow port of the second-stage swirling flow field are adjusted. The online particle size detection in the mud sand gradient separation and grading process of the argillaceous sandstone uranium ore can be realized, a positive and negative feedback intelligent regulation and control system is coupled, input parameters in the technological process are intelligently optimized, and the grading and separation precision and quality are ensured.

The application discloses a high-pressure leaching system and a high-pressure leaching method based on carbon dioxide and oxygen. The high-pressure leaching system comprises a carbon dioxide injection device, a high-pressure oxygen injection device and a high-pressure liquid injection device. The carbon dioxide injection device is connected with a liquid injection pipeline through a carbon dioxide gas conveying pipeline and a liquid carbon dioxide conveying pipeline. One end of the liquid injection pipeline is connected with a water storage tank, and the other end of the liquid injection pipeline is connected with an injection well. The other ends of the carbon dioxide gas conveying pipeline and the liquid carbon dioxide conveying pipeline are connected with a liquid carbon dioxide storage tank. The high-pressure oxygen injection device comprises a high-pressure oxygen conveying pipeline. One end of the high-pressure oxygen conveying pipeline is connected with a liquid oxygen storage tank, and the other end of the high-pressure oxygen conveying pipeline is connected with the injection well. The high-pressure injection of gaseous or liquid carbon dioxide increases the acidity of underground water, accelerates the dissolution of minerals and the complexation of uranium. The high-pressure injection of oxygen can quickly oxidize uranium-containing minerals and reducing substances, and improve the leaching rate of uranium.

The invention belongs to the field of uranium ore resource mining, and particularly relates to a sandstone uranium ore rock boundary square meter uranium quantity optimization method and device. A traditional mining area mining design generally adopts a fixed boundary square meter uranium amount, considers a single target, and is difficult to adapt to complex and changeable geological conditions and economic environments. The method comprises the following steps: constructing a mining area multivariate information digital library by acquiring geological information of a sandstone uranium mine mining area; implicit interpolation reconstruction is carried out on the mining area multi-source information database to obtain a spatial geometric model, spatial constraint and spatial filtering are carried out, a spatial block model is obtained, geological parameters and economic parameters are further obtained, and an economic benefit and resource benefit coupling multi-target optimization model is achieved and iterative optimization is carried out. The device comprises a graphic display module, a scheme selection module, a parameter input module, an optimization model construction module, an optimization calculation module and a result visualization module. According to the method, boundary square meter uranium quantity optimization based on dynamic economy and resource double targets is realized, and the utilization rate of mineral resources is improved.

The embodiment of the invention relates to the field of detection by generating an electric field through a detection device, in particular to an electrode device suitable for uranium ore exploration. The device comprises a conductive assembly, an electrode and a water guide assembly, and the conductive assembly is arranged to be inserted into the ground of a to-be-explored area for uranium exploration and is arranged to guide current of an external power supply into the ground to form an electric field required by measurement; the electrode is arranged to be fixedly connected with the conductive assembly, the conductive assembly and the electrode are detachably arranged in the water guide assembly, and the water guide assembly is arranged to provide saturated salt water for an underground medium at a measurement position of a to-be-explored area so as to reduce the grounding resistance at the position. Through detachable connection of the conductive assembly, the electrode and the water guide assembly, exploration personnel can use the conductive assembly and the electrode to guide external current into the underground to form an electric field required by measurement, and then through the water guide assembly connected with the electric field, saturated salt water is provided for the underground and the resistance of a measured position is reduced, so that data obtained through measurement is more accurate.

The invention relates to the decontamination of radiation-contaminated lands with clay and loose soil, such as agricultural lands, as well as abandoned test sites, such as the Semipalatinsk test site and uranium quarries. In the method for decontaminating radioactively contaminated lands, which includes the introduction of a reagent, according to the invention, the area of ​​the land to be treated is filled with a 5-7 cm thick layer of KB3 grade barite concentrate containing at least 90% barium sulfate, or finely crushed barite-lead ore containing 70% barium sulfate and up to 1% lead sulfate, Then the land is ploughed using a heavy eight-body plow to a depth of at least 300 mm, turning over the soil layer and dumping it in an inverted position for the complete burial of the radioactively contaminated mass, after which the land is harrowed and reclaimed with the sowing of grass seeds. The developed method for decontaminating radioactively contaminated lands makes it possible to decontaminate lands over a large area and eliminates the need to extract fragments containing adsorbed radionuclides from the soil.

The invention discloses low-acid leaching equipment based on carbon dioxide phase change and a leaching method thereof, belongs to the technical field of uranium leaching and mining, and solves the problems that the existing corrosion effect is poor and an ideal leaching effect cannot be achieved. Low-acid leaching equipment based on carbon dioxide phase change comprises a CO2 adjusting device, an oxidizing solution preparation device and a leaching device, the leaching device is used for containing sandstone uranium ore, the CO2 adjusting device and the oxidizing solution preparation device are both connected with the leaching device, the CO2 adjusting device comprises a CO2 pressure adjusting unit and a CO2 temperature adjusting unit, and the CO2 pressure adjusting unit is connected with the oxidizing solution preparation device. The CO2 pressure adjusting unit and the CO2 temperature adjusting unit are connected in series and connected with the leaching device, so that the CO2 subjected to pressure and temperature adjustment and the oxidizing solution are discharged into the leaching device for uranium leaching, the corrosion effect is good, and uranium leaching is accelerated.