CN113341450B - Sandstone rock core uranium-bearing grade quantitative analysis device - Google Patents
Sandstone rock core uranium-bearing grade quantitative analysis device Download PDFInfo
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- CN113341450B CN113341450B CN202110610034.2A CN202110610034A CN113341450B CN 113341450 B CN113341450 B CN 113341450B CN 202110610034 A CN202110610034 A CN 202110610034A CN 113341450 B CN113341450 B CN 113341450B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/167—Measuring radioactive content of objects, e.g. contamination
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/18—Measuring radiation intensity with counting-tube arrangements, e.g. with Geiger counters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/28—Measuring radiation intensity with secondary-emission detectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T3/00—Measuring neutron radiation
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Abstract
The invention discloses a quantitative analysis device for uranium-containing grade of sandstone core, which comprises a detection box and a crushing box body, wherein the crushing box body is fixedly arranged on the upper end surface of the detection box, the upper end of the crushing box body is fixedly provided with a feeding pipe, the upper end of the feeding pipe is fixedly provided with a feeding funnel, the side wall of the feeding pipe is fixedly provided with a servo motor, the output end of the servo motor penetrates through the side wall of the feeding pipe and is fixedly provided with a connecting shaft, the connecting shaft is fixedly provided with a transmission roller, the inner wall of the feeding pipe is rotatably connected with another same connecting shaft, the other connecting shaft is fixedly provided with a crushing roller, and the crushing roller and the transmission roller are respectively and fixedly provided with a first transmission gear and a second transmission gear. The analysis method has the advantages of short analysis flow, convenient operation, high stability and high precision, and can meet the requirement of nuclear safety monitoring.
Description
Technical Field
The invention relates to the technical field of sandstone uranium-bearing analysis, in particular to a sandstone core uranium-bearing grade quantitative analysis device.
Background
The clay minerals in sandstone-type uranium deposits are closely related to precipitation and enrichment of uranium, and the clay minerals mainly comprise kaolinite, montmorillonite, illite and partial illite mixed layers. Because the industrial extraction mode is complicated, the research of previous people on uranium adsorption enrichment ore formation by clay minerals is less, and most of the research is qualitative;
in order to solve the problems, patent No. CN103954739B discloses a method for calculating the mineralization relation between clay minerals and uranium in sandstone-type uranium deposit. The method aims to quantitatively analyze the relationship between clay minerals and uranium mineralization in sandstone-type uranium deposit. The method comprises the following steps: selecting samples from different sub-zones of an oxidation zone, a transition zone and a reduction zone of an interlayer oxidation zone sandstone-type uranium deposit, and calculating the mass of the three samples and the mass and proportion of uranium contained in the three samples; separating and purifying the clay minerals, and calculating the mass of the clay minerals; analyzing the type, composition and properties of the clay minerals in the three samples; calculating the uranium-containing mass and the uranium-containing proportion of the clay mineral; performing an adsorption reaction experiment of the clay mineral and the uranyl nitrate to obtain the most favorable adsorption condition; under the most favorable adsorption condition, the second adsorption of the clay minerals in the sample to uranium is examined; analyzing the difference of the adsorptivity of the clay mineral in the typical mineral standard sample mixture and the sample; and comparing the geological background of the area with the most favorable adsorption condition, and judging the enrichment effect of the clay minerals on uranium. Patent No. CN201610938324.9 discloses a deep sandstone-type uranium mineralization direct information exploration method. The method comprises the following steps: step 1, selecting a working area and determining a measuring point-line grid of the working area; step 2, setting coordinate points of the kilometer net according to the point-line distance determined in the step 1; step 3, selecting an active carbon radon measuring instrument and calibrating; step 4, field site location; step 5, instrument stability inspection and activated carbon bottle background measurement; step 6, field collection; step 7, performing component analysis test on the soil sample collected in the step 6; step 8, taking a cup and measuring; step 9, forming raster data; step 10, overlapping the raster data in the step 9 to form overlapped raster data; and 12, determining the advantageous section of the deep uranium mineralization information. The method can effectively detect the direct uranium mineralization information of the deep sandstone type.
However, in the existing technological conversion process of uranium chemical conversion, the uranium content in a large amount of uranium-bearing uranium ore rocks is data necessary for development and production, and the nuclear critical safety problem of the technology is directly concerned. When data of uranium content in uranium ore rocks are obtained, the traditional mode only carries out single analysis calculation or reconnaissance on the uranium ore, and the mode of this analysis has the not enough and shortcoming such as analysis flow length, stability and precision inadequately, can not satisfy the demand of nuclear safety control.
In order to solve the problems, the invention provides a quantitative analysis device for uranium-containing grade of sandstone cores.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a quantitative analysis device for uranium-containing grade of sandstone cores.
The invention provides a quantitative analysis device for uranium-containing grade of sandstone core, which comprises a detection box and a crushing box body, wherein the crushing box body is fixedly arranged on the upper end surface of the detection box, the upper end of the crushing box body is fixedly provided with a feeding pipe, the upper end of the feeding pipe is fixedly provided with a feeding funnel, the side wall of the feeding pipe is fixedly provided with a servo motor, the output end of the servo motor penetrates through the side wall of the feeding pipe and is fixedly provided with a connecting shaft, the connecting shaft is fixedly provided with a transmission roller, the inner wall of the feeding pipe is rotatably connected with another same connecting shaft, the other connecting shaft is fixedly provided with a crushing roller, the crushing roller and the transmission roller are respectively and fixedly provided with a first transmission gear and a second transmission gear, the first transmission gear and the second transmission gear are meshed and connected, and a plurality of crushing teeth are arranged on the crushing roller and the transmission roller at equal intervals in a ring column, symmetrical fixed mounting has two servo motor on the inner wall of crushing box, every the equal fixed mounting of servo motor's output has a rolling disc, every all rotate on the positive lateral wall of rolling disc and be connected with the catch bar, the other end of catch bar rotates and is connected with the riser.
Preferably, the inner wall of the detection box is symmetrically and fixedly provided with two waterproof motors, the output end of each waterproof motor is fixedly provided with a stirring shaft, and the side wall of each stirring shaft is symmetrically and fixedly provided with two stirring blades.
Preferably, the analysis and detection mechanism comprises a detection unit, a signal processing mechanism, a neutron detector and two neutron sources, the detection unit is fixedly installed at the center of the bottom end face of the detection box, the two neutron sources are symmetrically and fixedly installed in the detection unit, and the neutron detector and the signal processing mechanism are both fixedly installed in the detection unit.
Preferably, a post amplifier, a discrimination counter, a data processing terminal, a pre-amplifier and a power supply are arranged in the signal processing mechanism, the pre-amplifier is electrically connected with the power supply, the output end of the pre-amplifier is electrically connected with the post amplifier, the output end of the post-amplifier is electrically connected with the discrimination counter, and the output end of the discrimination counter is electrically connected with the data processing terminal.
Preferably, the input end of the preamplifier is in radio connection with the neutron detector, the output end of the data processing terminal is electrically connected with a display, and the display is fixedly mounted on the side wall of the detection box.
Preferably, protection machanism includes protecting film, torsion spring wheel and fixed plate, fixed plate fixed mounting is on the inner wall of smashing the box, the torsion spring wheel rotates the lower extreme of connecting at the fixed plate, the one end winding of protecting film is on the torsion spring wheel, the other end fixed mounting of protecting film is in the upper end of riser.
Preferably, stop gear includes stop collar and pull rod, the one end fixed mounting of stop collar is on the inner wall of smashing the box, the horizontal sliding connection of pull rod is in the stop collar, the one end fixedly connected with limiting plate of pull rod, limiting plate sliding connection is in the stop collar, the other end fixed mounting of pull rod is on the lateral wall of riser.
Preferably, a through hole matched with the pull rod is formed in the side wall of the limiting sleeve, and the pull rod is connected in the through hole in a sliding mode.
The invention has the beneficial effects that:
1. the neutron source penetrates through the side wall of the detection unit through the neutron shielding body and acts with 235U in detection liquid in the waterproof motor, fission reaction is carried out, then fission neutrons are released, the neutrons are obtained by He3, the neutron is measured through a power supply, a preamplifier, a post amplifier, a discriminator counter and a collected neutron counting rate N, and then phi heat sigma fNUty is measured according to a calculation model N, so that the content NU of the 235U nuclide in the detection liquid in the waterproof motor can be calculated;
2. the analysis method has the advantages of short analysis flow, convenient operation, high stability and precision, and can meet the requirement of nuclear safety monitoring;
3. the rotating disc drives the push rod to rotate through the output end, so that the other end of the push rod pushes the vertical plate to be close to the middle plate, the toothed plate is further pushed to coincide with the side wall of the middle plate, rock particles between the toothed plate and the middle plate are further crushed, and meanwhile, rock particles accumulated between the vertical plate and the toothed plate can be crushed by rolling the vertical plate in the process of moving towards the toothed plate, so that blockage is avoided;
4. step motor passes through the output and drives one of them connecting axle and rotate, and then drives another connecting axle and rotate, smashes roller and driving roller relative motion and carries out preliminary smashing to the rock that falls into in the inlet tube, and the rock powder after smashing can fall between two risers, and the rock powder granule that accords with the condition passes through behind the pinion rack and directly falls into waterproof motor through the detection case in, and the bigger rock granule of granule can be stayed the surface of pinion rack.
Drawings
Fig. 1 is a schematic structural diagram of a quantitative analysis device for uranium-containing grade of a sandstone core according to the present invention;
fig. 2 is a front cross-sectional view of a quantitative analysis device for uranium-containing grade of a sandstone core according to the present invention;
fig. 3 is a side sectional view of a crushing roller and a transmission roller in the quantitative analysis device for uranium-containing grade of sandstone core according to the present invention;
fig. 4 is a top cross-sectional view of a feeding pipe in the quantitative analysis device for uranium-containing grade of sandstone core according to the present invention;
fig. 5 is a front cross-sectional view of a detection box in the quantitative analysis device for uranium-containing grade of sandstone core according to the present invention;
fig. 6 is a schematic diagram of an internal structure of a signal processing mechanism in the quantitative analysis device for uranium-containing grade of sandstone core according to the present invention.
In the figure: the device comprises a pull rod 1, a limiting sleeve 2, a vertical plate 3, a toothed plate 4, a limiting groove 5, a push rod 6, a protective film 7, a torsion spring wheel 8, a fixing plate 9, a feeding pipe 10, a crushing roller 11, a crushing box 12, a rotating disc 13, a limiting plate 14, a feeding funnel 15, an intermediate plate 16, a crushing tooth 17, a stepping motor 18, a transmission roller 19, a transmission gear 20I, a display 21, a detection box 22, a waterproof motor 23, a detection unit 24, a neutron source 25, a signal processing mechanism 26, a neutron detector 27, a post amplifier 28, a screening counter 29, a data processing terminal 30, a pre-amplifier 31, a power supply 32 and a transmission gear 33 II.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Examples
Referring to fig. 1-4, a sandstone core uranium-bearing grade quantitative analysis device comprises a detection box 22 and a crushing box body 12, the crushing box body 12 is fixedly installed on the upper end face of the detection box 22, a feeding pipe 10 is fixedly installed on the upper end of the crushing box body 12, a feeding funnel 15 is fixedly installed on the upper end of the feeding pipe 10, a stepping motor 18 is fixedly installed on the side wall of the feeding pipe 10, the output end of the stepping motor 18 penetrates through the side wall of the feeding pipe 10 and is fixedly installed with a connecting shaft, a driving roller 19 is fixedly installed on the connecting shaft, the inner wall of the feeding pipe 10 is rotatably connected with another same connecting shaft, a crushing roller 11 is fixedly installed on the other connecting shaft, a first transmission gear 20 and a second transmission gear 33 are respectively and fixedly installed on the crushing roller 11 and the driving roller 19, the first transmission gear 20 is meshed with the second transmission gear 33, a plurality of crushing teeth 17 are arranged on the ring columns with equal intervals on the crushing roller 11 and the driving roller 19, two servo motors are symmetrically and fixedly installed on the inner wall of the crushing box body 12, a rotating disc 13 is fixedly installed at the output end of each servo motor, a push rod 6 is rotatably connected to the front side wall of each rotating disc 13, the other end of the push rod 6 is rotatably connected to a vertical plate 3, a protection mechanism is arranged at the upper end of each vertical plate 3, a limiting mechanism is arranged on the side wall of each vertical plate 3, a limiting groove 5 is formed in the upper half part of one side, opposite to each vertical plate 3, of each vertical plate 5, a toothed plate 4 is slidably connected to each limiting groove 5, the other ends of the two toothed plates 4 are jointly and rotatably connected to an intermediate plate 16, the lower end of the intermediate plate 16 is fixedly installed on the bottom end face of the crushing box body 12, tooth grooves matched with the toothed plates 4 are respectively formed in the two sides of the intermediate plate 16, two discharge ports are symmetrically formed in the bottom end face of the crushing box body 12, the lower ends of the discharge ports are mutually communicated with a detection box 22, and an analysis detection mechanism is arranged in the detection box 22, the stepping motor 18 is started, the stepping motor 18 drives one connecting shaft to rotate through an output end, one connecting shaft drives the second transmission gear 33 to rotate through the first transmission gear 20, the other connecting shaft is further driven to rotate, the crushing roller 11 and the transmission roller 19 move relatively to crush rocks falling into the feeding pipe 10 preliminarily, crushed rock powder can fall between the two vertical plates 3, and rock powder particles meeting conditions directly fall into the waterproof motor 23 through the detection box 22 after passing through the toothed plate 4; larger rock particles will remain on the surface of the toothed plate 4.
The inner wall of the detection box 22 is symmetrically and fixedly provided with two waterproof motors 23, the output end of each waterproof motor 23 is fixedly provided with a stirring shaft, the side wall of each stirring shaft is symmetrically and fixedly provided with two stirring blades, and the waterproof motors 23 drive the stirring blades to rotate through the output ends to stir and mix detection liquid in the detection box 22;
referring to fig. 5-6, the analysis and detection mechanism includes a detection unit 24, a signal processing mechanism 26, a neutron detector 27 and two neutron sources 25, the detection unit 24 is fixedly installed at the center of the bottom end face of the detection box 22, the two neutron sources 25 are symmetrically and fixedly installed in the detection unit 24, both the neutron detector 27 and the signal processing mechanism 26 are fixedly installed in the detection unit 24, data detected by the neutron detector 27 can be processed in time through the signal processing mechanism 26, and the result can be displayed to the worker through the display 21;
the signal processing mechanism 26 is internally provided with a post amplifier 28, a discrimination counter 29, a data processing terminal 30, a pre-amplifier 31 and a power supply 32, the pre-amplifier 31 is electrically connected with the power supply 32, the output end of the pre-amplifier 31 is electrically connected with the post amplifier 28, the output end of the post-amplifier 28 is electrically connected with the discrimination counter 29, the output end of the discrimination counter 29 is electrically connected with the data processing terminal 30, the input end of the pre-amplifier 31 is electrically connected with the neutron detector 27 in a wireless manner, the output end of the data processing terminal 30 is electrically connected with a display 21, the display 21 is fixedly arranged on the side wall of the detection box 22, rock powder is contacted with detection liquid after falling into the waterproof motor 23, and the waterproof motor 23 is started and drives stirring blades to rotate to fully mix the rock powder and the detection liquid; the neutron source 25 penetrates through the side wall of the detection unit 24 through the neutron shielding body and reacts with 235U in the detection liquid in the waterproof motor 23, fission reaction is carried out, fission neutrons are released, the neutrons are obtained by He3, the power supply 32, the preamplifier 31, the post-amplifier 28, the discriminator counter 29 and the counting rate N of the collected neutrons are measured, and then the content NU of the 235U nuclide in the detection liquid in the waterproof motor 23 can be calculated according to the calculation model N, namely phi heat sigma fNUty;
the protective mechanism comprises a protective film 7, a torsion spring wheel 8 and a fixing plate 9, the fixing plate 9 is fixedly arranged on the inner wall of the crushing box body 12, the torsion spring wheel 8 is rotatably connected to the lower end of the fixing plate 9, one end of the protective film 7 is wound on the torsion spring wheel 8, the other end of the protective film 7 is fixedly arranged at the upper end of the vertical plate 3, the protective film 7 can prevent rock particles from falling on the rotating disc 13, and the normal use of the rotating disc 13 is guaranteed;
the limiting mechanism comprises a limiting sleeve 2 and a pull rod 1, one end of the limiting sleeve 2 is fixedly mounted on the inner wall of the crushing box body 12, the pull rod 1 is transversely and slidably connected into the limiting sleeve 2, one end of the pull rod 1 is fixedly connected with a limiting plate 14, the limiting plate 14 is slidably connected into the limiting sleeve 2, the other end of the pull rod 1 is fixedly mounted on the side wall of the vertical plate 3, the limiting mechanism can guarantee the vertical plate 3 to transversely move linearly, and deviation of the vertical plate 3 in movement is avoided;
the side wall of the limiting sleeve 2 is provided with a through hole matched with the pull rod 1, and the pull rod 1 is connected in the through hole in a sliding manner, so that the pull rod 1 can reciprocate left and right;
the analysis method has the advantages of short analysis flow, convenient operation, high stability and high precision, and can meet the requirement of nuclear safety monitoring.
The working principle of the invention is as follows: firstly, a uranium ore sample is placed in a feeding hopper 15, then a stepping motor 18 is started, the stepping motor 18 drives one connecting shaft to rotate through an output end, one connecting shaft drives a second transmission gear 33 to rotate through a first transmission gear 20, and then drives the other connecting shaft to rotate, the rock falling into a feeding pipe 10 is primarily crushed through the relative motion of a crushing roller 11 and a transmission roller 19, the crushed rock powder can fall between two vertical plates 3, and qualified rock powder particles directly fall into a waterproof motor 23 through a detection box 22 after passing through a toothed plate 4; rock particles with larger particles can be left on the surface of the toothed plate 4;
the rotating disc 13 is started, the rotating disc 13 drives the pushing rod 6 to rotate through the output end, so that the vertical plate 3 is pushed by the other end of the pushing rod 6 to be close to the middle plate 16, the toothed plate 4 is further pushed to coincide with the side wall of the middle plate 16, rock particles between the toothed plate 4 and the middle plate 16 are further crushed, and meanwhile, the rock particles accumulated between the vertical plate 3 and the toothed plate 4 are crushed by rolling in the process that the vertical plate 3 moves towards the toothed plate 4, so that blockage is avoided;
the rock powder falls into the waterproof motor 23 and then contacts with the detection liquid, and the waterproof motor 23 is started and drives the stirring blade to rotate to fully mix the rock powder and the detection liquid; the neutron source 25 penetrates through the side wall of the detection unit 24 through the neutron shield and reacts with 235U in the detection liquid in the waterproof motor 23, fission reaction is carried out, fission neutrons are released, the neutrons are obtained by He3, the power supply 32, the preamplifier 31, the post amplifier 28, the discriminator counter 29 and the counting rate N for collecting the neutrons are measured, and then phi heat sigma fNUty is measured according to a calculation model N, so that the content NU of the 235U nuclide in the detection liquid in the waterproof motor 23 can be calculated, wherein phi heat is the average neutron fluence rate in a pipeline, sigma f is a microscopic section, t is measurement time, and y is the average released neutron number of each fission;
specifically, in the present embodiment, the preamplifier 31 is a spectral amplifier module of a Canberra 2022 model; the post amplifier 28 is matched with the pre-amplifier 31, and the discrimination counter 29 can be a Siemens PLC (S7-200) high-speed counter HC 4; the data processing terminal 30 is implemented by using data processing Software (Tracerlab-Spectrum-Software). In this embodiment, the neutron detector 27 is a He3 neutron array detector, and its collecting end is in the form of an annular ring and extends into the detection liquid in the waterproof motor 23.
Claims (5)
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| CN202110610034.2A CN113341450B (en) | 2021-06-01 | 2021-06-01 | Sandstone rock core uranium-bearing grade quantitative analysis device |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106990428A (en) * | 2017-05-03 | 2017-07-28 | 中国核动力研究设计院 | The method of uranium content and its device is realized in a kind of neutron measurement uranium-bearing liquid |
| CN211755299U (en) * | 2019-11-30 | 2020-10-27 | 青岛金翔商砼有限公司 | Broken device that refines of building site concrete piece |
| CN212915859U (en) * | 2020-07-03 | 2021-04-09 | 辽宁国润金属集团有限公司 | Crushing apparatus for rock |
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- 2021-06-01 CN CN202110610034.2A patent/CN113341450B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106990428A (en) * | 2017-05-03 | 2017-07-28 | 中国核动力研究设计院 | The method of uranium content and its device is realized in a kind of neutron measurement uranium-bearing liquid |
| CN211755299U (en) * | 2019-11-30 | 2020-10-27 | 青岛金翔商砼有限公司 | Broken device that refines of building site concrete piece |
| CN212915859U (en) * | 2020-07-03 | 2021-04-09 | 辽宁国润金属集团有限公司 | Crushing apparatus for rock |
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