CN115407416A - Spatial positioning method and system for ultra-micro uranium minerals in uranium ores based on light release - Google Patents
Spatial positioning method and system for ultra-micro uranium minerals in uranium ores based on light release Download PDFInfo
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- 238000003384 imaging method Methods 0.000 claims abstract description 61
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
- G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
- G01V5/281—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects detecting special nuclear material [SNM], e.g. Uranium-235, Uranium-233 or Plutonium-239
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/29—Measurement performed on radiation beams, e.g. position or section of the beam; Measurement of spatial distribution of radiation
- G01T1/2914—Measurement of spatial distribution of radiation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
- G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
- G01V5/26—Passive interrogation, i.e. by measuring radiation emitted by objects or goods
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- G—PHYSICS
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- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
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Abstract
The invention discloses a spatial positioning method and a spatial positioning system for ultra-micro uranium minerals in uranium ores based on light release, and relates to the field of uranium ore geological research. The method comprises the following steps: collecting a uranium ore sample, and preparing the uranium ore sample into a first sample and fastening and fixing the first sample on the surface of the IP imaging plate; the IP imaging plate is hermetically arranged in an IP imaging special irradiation box and then is put in a lead chamber for exposure; after exposure for a fixed time, taking out the IP imaging plate, and reading two-dimensional light release data of each pixel point of the IP imaging plate; and after analyzing the two-dimensional light release data of each pixel point, screening and extracting light release signals of uranium mineral decay, comparing and analyzing the light release values of the uranium ore and the background glass-carrying sheet, determining the lower limit value and the contour line distance of a contour map, performing computer imaging and image enhancement, and outputting a light release local high-value distribution range of an image, namely a uranium mineral enrichment area. The uranium mineral positioning method based on the optical release plate has the advantage that uranium mineral positioning can be performed quickly and accurately by means of the high-accuracy imaging characteristic of the optical release plate.
Description
Technical Field
The invention relates to the technical field of uranium ore geological research, in particular to a method and a system for spatially positioning ultra-micro uranium minerals in uranium ores based on light emission.
Background
The uranium minerals or uranium-containing minerals of low-grade uranium ores, particularly sandstone-type uranium ores are small in size, are distributed in the ores in a dispersing manner, have obvious crystal structures and are difficult to directly position and observe, so that the specific positions of the uranium minerals in ore samples need to be accurately determined before micro-area analysis, and the spatial positioning of the ultra-micro uranium minerals in the ore samples is a necessary step and a difficult point for research of uranium mineralogy.
At present, two methods are used for positioning and researching occurrence states of uranium minerals: 1. for high-grade uranium ores, identifying uranium minerals by experienced professional technicians under a microscope; for low-grade uranium ores, a professional defines a possible occurrence area of a uranium mineral on a slice under a microscope, and observes and measures the uranium content by using a micro-area analysis method such as an electronic probe and the like, but in most cases, the method still cannot find the uranium mineral after a large amount of time is consumed, the method depends on the observation experience of a technician for the uranium mineral, is only suitable for the uranium mineral which can be observed under the microscope or the situation of the possible occurrence area of the uranium mineral, and cannot determine the position of the uranium mineral when the uranium mineral is too tiny or not crystallized; 2. the spatial position and distribution of uranium minerals in rocks and ores are determined by utilizing a method of radiography or alpha tracking, and the scheme is complex in procedure, long in time consumption and tedious in steps.
Therefore, it is an urgent problem to those skilled in the art how to perform uranium mineral positioning quickly and accurately.
Disclosure of Invention
In view of the above, the invention provides a method and a system for spatially positioning an ultra-micro uranium mineral in a uranium ore based on light-release, which utilize the high-precision imaging characteristic of a light-release plate to form an in-situ lossless rapid high-precision uranium mineral positioning method, and solve the positioning problem of the ultra-micro uranium mineral in the mineralogy research of the uranium ore.
In order to achieve the purpose, the invention adopts the following technical scheme: a spatial positioning method for ultra-micro uranium minerals in uranium ores based on light release is characterized by comprising the following specific steps:
collecting a uranium ore sample, and preparing the uranium ore sample into a first sample and fastening and fixing the first sample on the surface of an IP imaging plate;
the IP imaging plate is hermetically arranged in an IP imaging special irradiation box and then is placed in a lead chamber for exposure;
after exposure for a fixed time, taking out the IP imaging plate, and reading two-dimensional light release data of each pixel point of the IP imaging plate;
and analyzing the two-dimensional light release data of each pixel point, screening and extracting light release signals of uranium mineral decay, comparing and analyzing the light release values of uranium ores and background glass-carrying sheets, determining the lower limit value and the contour line distance of a contour map, performing computer imaging and image enhancement, and outputting a light release local high-value distribution range of an image, namely a uranium mineral enrichment area.
Optionally, the first sample comprises a sheet or an electronic probe tile.
Optionally, the uranium content of the uranium ore sample is greater than 0.01 x 10 < -6 >, a core sample containing a core section of a drilled hole is collected and ground into the slice with the thickness of 0.05-0.07mm.
Optionally, the surface of the IP imaging system has a protective layer, and the special illumination box for IP imaging must be completely protected from light.
Optionally, the IP imaging plate is placed in a low background lead chamber, the thickness of the lead chamber is not less than 10cm, and the lead chamber is lined with copper and organic glass.
Optionally, determining exposure time according to uranium content in the ore sample determined by a gamma logging or indoor gamma energy spectrum method; and for an unknown uranium grade ore sample, determining exposure time through an irradiation experiment.
Optionally, the reading device sequentially scans the IP imaging plate and stores the two-dimensional light release data, and the spatial resolution is not lower than 50 μm.
Optionally, local average spatial domain filtering is performed on the two-dimensional luminescence data.
Optionally, the local high-value position of the obtained photoluminescence image is determined as a uranium mineral enrichment region, and the uranium mineral enrichment region is marked on a sheet for micro-region analysis of an electronic probe and a scanning electron microscope.
On the other hand, the system for spatially positioning the ultra-micro uranium mineral in the uranium ore based on the luminescence comprises a sample manufacturing module, an IP imaging module, a data acquisition module and a uranium mineral positioning module which are sequentially connected; wherein the content of the first and second substances,
the sample manufacturing module is used for collecting a uranium ore sample, manufacturing the uranium ore sample into a first sample, and fastening and fixing the first sample on the surface of the IP imaging plate;
the IP imaging module is used for hermetically installing the IP imaging plate into an IP imaging special irradiation box and then placing the IP imaging plate into a lead chamber for exposure;
the data acquisition module is used for taking out the IP imaging plate after exposure for a fixed time and reading two-dimensional light release data of each pixel point of the IP imaging plate;
the uranium mineral positioning module is used for screening and extracting uranium mineral decay light release signals after analyzing the two-dimensional light release data of each pixel point, comparing and analyzing the light release values of uranium ores and background glass carrying sheets, determining the lower limit value and the isoline distance of an isoline graph, performing computer imaging and image enhancement, and outputting the light release light local high value distribution range of an image, namely a uranium mineral enrichment area.
Compared with the prior art, the method and the system for spatially positioning the ultra-micro uranium minerals in the uranium ores based on the light release have the following beneficial technical effects:
(1) The light-release principle caused by uranium mineral radioactivity is applied to the research field of uranium ore geological exploration and uranium ore metallurgy mineral technology, an in-situ lossless rapid high-precision uranium mineral positioning method is formed by utilizing the high-precision imaging characteristic of an IP imaging plate, and the positioning problem of low-grade uranium ore deposits, particularly sandstone-type uranium ore deposits ultra-micro-scale uranium minerals is solved;
(2) The spatial positioning of uranium in the low-grade sandstone-type uranium ore is accurate, and the spatial resolution can reach 50 mu m;
(3) High-quality images can be obtained, and the spatial distribution of uranium minerals can be conveniently determined;
(4) The method is efficient, quick, simple and convenient;
(5) And the in-situ nondestructive measurement is carried out, the sample is not damaged, no chemical reagent treatment process is adopted, and the environment is protected.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is an IP image of a uranium-bearing mineral geological flake according to the invention;
fig. 3 is a system configuration diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a spatial positioning method for ultra-micro uranium minerals in uranium ores based on light release, which comprises the following specific steps as shown in fig. 1:
s1, preparing a uranium ore sample into a sheet, and fastening and fixing the sheet on the surface of an IP plate;
specifically, according to the drilling core record and the drilling gamma well logging data, a core sample with the uranium content of more than 0.01% is collected. And (3) preparing the collected uranium ore sample into slices, wherein the thickness of the slices is 0.05-0.07mm. And directly buckling and fixing the surface of the slice with the ore sheet on the surface of the IP plate, wherein the glass carrying sheet faces upwards. The thin uranium ore sheet and the blank glass-bearing sheet should be placed on the same IP plate and exposed simultaneously. In this example, an IP board with a surface protective layer was selected to prevent contamination of uranium-containing ore powder.
S2, the IP plate with the fixed sample is hermetically arranged in an IP special irradiation box and then is placed in a lead chamber for irradiation;
and (3) sealing the IP plate with the fixed sample to prevent environmental radon and daughters thereof from entering the sealed IP plate, then placing the IP plate into a completely lightproof special IP irradiation box and then placing the IP plate into a lead chamber, and requiring the lead chamber to shield the interference of environmental ionizing radiation as much as possible (shielding conditions: 100mm Pb +10mm PMMA).
S3, taking out the IP plate after irradiation for a fixed time, and reading a light release optical signal caused by decay of uranium minerals;
primarily determining exposure time according to uranium content in a sample measured by a gamma logging instrument or an indoor gamma energy spectrometer, and determining the exposure time through an irradiation experiment for ores with unknown uranium grade;
and (3) taking out the IP plate after a certain period of irradiation, then putting the IP photosensitive plate into a reading device to read a Photo-stimulated Luminescence signal (PSL) caused by alpha particles emitted by the uranium minerals, and recording and storing the PSL as a two-dimensional Photo-Luminescence digital signal.
And S4, extracting the photo-excitation light signal of each pixel, and performing effective alpha particle discrimination and spatial filtering on the two-dimensional photo-luminescence light signal.
The yellow part of the text should be placed at this position
Further, the spatial position and distribution of the uranium minerals are determined according to the luminescence intensity in the image, namely, the alpha particles in the image are screened and useful signals are extracted, and the method specifically comprises the following steps:
performing image analysis to obtain the PSL value of each pixel point, wherein the PSL values of the ith row and the jth column are marked as P i,j ；
To P i,j After 9-point weighted average filtering, marking as I i,j ；
Setting a judgment threshold I threshold When I is i,j >I threshold When it is determined that I i,j Is a valid alpha particle signal, otherwise I i,j And (5) removing.
The spatial filtering adopts a 3 multiplied by 3 square window to carry out sliding average filtering, and the new central pixel value is the weighted average of 9 adjacent points; then, the data after spatial filtering is statistically analyzed to obtain the average value X of the light-release values in the whole slice area 1 And standard deviation SD; subtracting the average value of the light release value of the bottom-loading glass sheet from the average value of the light release of the uranium ore sample to obtain the light release background value X of the sample 2 (ii) a Multiplying the background value by 3 (3 XX) 2 ) Is the lower limit of the luminous contour map at 3 × X 2 +SD、3×X 2 +2×SD、3×X 2 +3 × SD \8230\8230, computer imaging for contour distance; and finally, further enhancing the light release image by adopting a high-pass filtering method, wherein the local light release high-value distribution range of the image corresponds to a uranium mineral enrichment area. And marking the spatial position of uranium mineral enrichment on the slice according to the output image light release local high-value position.
As shown in fig. 2, the invention utilizes the principle that the IP plate can be sensitized during radioactive decay of uranium, and determines the position and distribution of uranium minerals in the ore through sensitized imaging formed by uranium mineral radioactive particles on the photosensitive plate. Measured by an electronic probe, 3 measuring points UO of a red area in the slice of FIG. 2 2 The average content was 38.76%. The model numbers of BaFX Imaging Plates (IP) and the measuring and reading devices thereof, which are manufactured by Fuji film company of Japan, used in the present example, were BAS-MS2040 and BAS-2500, respectively. The BAS-MS2040 photosensitive material is BaFBrI Eu 2+ The thickness of the photosensitive layer was 115 μm, and the thickness of the surface protective layer was 9 μm. Under the experimental condition of 6 days of exposure, the imaging spatial resolution of the uranium minerals in the slice hot spot region (uranium mineral concentration region) can reach 50 μm.
Furthermore, the contrast, brightness and color saturation of the image are adjusted, and the spatial position positioning resolution is adjusted to obtain a clear image.
On the other hand, a spatial positioning system for ultra-micro uranium minerals in uranium ores based on luminescence is provided, as shown in fig. 3, and comprises a sample preparation module, an IP imaging module, a data acquisition module and a uranium mineral positioning module; wherein the content of the first and second substances,
the sample manufacturing module is used for collecting a uranium ore sample, manufacturing the uranium ore sample into a first sample, and fastening and fixing the first sample on the surface of the IP imaging plate;
the IP imaging module is used for hermetically installing the IP imaging plate into an IP imaging special irradiation box and then placing the IP imaging plate into a lead chamber for exposure;
the data acquisition module is used for taking out the IP imaging plate after exposure for a fixed time and reading two-dimensional light release data of each pixel point of the IP imaging plate;
the uranium mineral positioning module is used for screening and extracting uranium mineral decay light release light signals after analyzing the two-dimensional light release data of each pixel point, comparing and analyzing light release values of uranium ores and background glass-carrying sheets, determining a lower limit value and an isoline distance of an isoline graph, performing computer imaging and image enhancement, and outputting a light release light local high-value distribution range of an image, namely a uranium mineral enrichment area.
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A spatial positioning method for ultra-micro uranium minerals in uranium ores based on light release is characterized by comprising the following specific steps:
collecting a uranium ore sample, and preparing the uranium ore sample into a first sample and fastening and fixing the first sample on the surface of an IP imaging plate;
the IP imaging plate is hermetically arranged in an IP imaging special irradiation box and then is placed in a lead chamber for exposure;
after exposure for a fixed time, taking out the IP imaging plate, and reading two-dimensional light release data of each pixel point of the IP imaging plate;
and analyzing the two-dimensional light release data of each pixel point, screening and extracting light release signals of uranium mineral attenuation light release, comparing and analyzing light release values of uranium ores and background glass-carrying sheets, determining a lower limit value and an isoline distance of an isoline graph, performing computer imaging and image enhancement, and outputting a light release local high-value distribution range of an image, namely a uranium mineral enrichment area.
2. The method for spatially localizing uranium ultra-micro minerals in uranium ores based on luminescence according to claim 1, wherein the first sample comprises a sheet or an electronic probe sheet.
3. The method for spatially locating an ultra-micro uranium mineral in a uranium ore based on luminescence emission according to claim 2, wherein a uranium content of the uranium ore sample is greater than 0.01 x 10 -6 And collecting a core sample of a drilled ore section, and grinding the core sample into a thin slice with the thickness of 0.03mm or the electronic probe slice with the thickness of 0.05-0.07mm.
4. The method for spatially locating the ultra-micro uranium mineral in the uranium ore based on the luminescence, according to claim 1, wherein a protective layer is provided on the surface of an IP imaging system, and the irradiation box special for IP imaging must be completely protected from light.
5. The method for spatially locating an ultra-micro uranium mineral in a uranium ore based on photoluminescence according to claim 1, wherein the IP imaging plate is placed in a low background lead chamber, the lead chamber has a thickness of not less than 10cm and is lined with copper and plexiglass.
6. The method for spatially localizing the uranium ultra-micro mineral in uranium ore based on luminescence according to claim 1, wherein the exposure time is determined according to the uranium element content in the ore sample measured by gamma logging or indoor gamma spectroscopy; and for an unknown uranium grade ore sample, determining the exposure time through an irradiation experiment.
7. The method for spatially locating the ultra-micro uranium minerals in the uranium ores based on the photoluminescence, according to claim 1, wherein a readout device sequentially scans an IP imaging plate and stores two-dimensional photoluminescence data, and the spatial resolution is not lower than 50 μm.
8. The method for spatially locating an ultra-micro uranium mineral in a uranium ore based on optical luminescence, according to claim 1, further comprising performing local average spatial domain filtering on the two-dimensional optical luminescence data.
9. The method for spatially locating the ultra-micro uranium minerals in the uranium ores based on the photoluminescence, according to claim 1, wherein local high-value positions of the obtained photoluminescence images are determined as uranium mineral enrichment regions, and the uranium mineral enrichment regions are marked on a sheet for micro-area analysis of an electronic probe and a scanning electron microscope.
10. A space positioning system for ultra-micro uranium minerals in uranium ores based on light release is characterized by comprising a sample manufacturing module, an IP imaging module, a data acquisition module and a uranium mineral positioning module which are sequentially connected; wherein the content of the first and second substances,
the sample manufacturing module is used for acquiring a uranium ore sample, manufacturing the uranium ore sample into a first sample, and buckling, pressing and fixing the first sample on the surface of the IP imaging plate;
the IP imaging module is used for hermetically loading the IP imaging plate into an IP imaging special irradiation box and then putting the IP imaging plate into a lead chamber for exposure;
the data acquisition module is used for taking out the IP imaging plate after exposure for a fixed time and reading two-dimensional light release data of each pixel point of the IP imaging plate;
the uranium mineral positioning module is used for screening and extracting uranium mineral decay light release light signals after analyzing the two-dimensional light release data of each pixel point, comparing and analyzing light release values of uranium ores and background glass-carrying sheets, determining a lower limit value and an isoline distance of an isoline graph, performing computer imaging and image enhancement, and outputting a light release light local high-value distribution range of an image, namely a uranium mineral enrichment area.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8901485B1 (en) * | 2013-06-05 | 2014-12-02 | Raymond Allen Donelick | Method of determining the concentration of an element in a solid using relative abundances of isotopes from the solid and a reference solid |
| CN111044545A (en) * | 2019-12-30 | 2020-04-21 | 核工业北京地质研究院 | Method for effectively obtaining thorium-lead isotope age of thorium deposit |
| CN112684515A (en) * | 2020-12-30 | 2021-04-20 | 核工业北京地质研究院 | Uranium molybdenum deposit target area delineating method |
| US20210261861A1 (en) * | 2018-06-15 | 2021-08-26 | Thomas Jefferson University | Doped beo compounds for optically stimulated luminescence (osl) and thermoluminescence (tl) radiation dosimetry |
-
2022
- 2022-09-05 CN CN202211076399.2A patent/CN115407416A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8901485B1 (en) * | 2013-06-05 | 2014-12-02 | Raymond Allen Donelick | Method of determining the concentration of an element in a solid using relative abundances of isotopes from the solid and a reference solid |
| US20210261861A1 (en) * | 2018-06-15 | 2021-08-26 | Thomas Jefferson University | Doped beo compounds for optically stimulated luminescence (osl) and thermoluminescence (tl) radiation dosimetry |
| CN111044545A (en) * | 2019-12-30 | 2020-04-21 | 核工业北京地质研究院 | Method for effectively obtaining thorium-lead isotope age of thorium deposit |
| CN112684515A (en) * | 2020-12-30 | 2021-04-20 | 核工业北京地质研究院 | Uranium molybdenum deposit target area delineating method |
Non-Patent Citations (2)
| Title |
|---|
| 李虎侯: "光释光断代", 核电子学与探测技术, no. 03, 20 May 2000 (2000-05-20) * |
| 黄建微;李德红;党永乐;吴笛;王乃彦;郝艳梅;: "IP板测量γ射线辐射场参数研究", 核电子学与探测技术, no. 06, 20 June 2017 (2017-06-20) * |
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