CN111323439A - Method for researching mineralization process of interlayer oxidation zone sandstone-type uranium deposit by using clay mineral - Google Patents
Method for researching mineralization process of interlayer oxidation zone sandstone-type uranium deposit by using clay mineral Download PDFInfo
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- CN111323439A CN111323439A CN201811525501.6A CN201811525501A CN111323439A CN 111323439 A CN111323439 A CN 111323439A CN 201811525501 A CN201811525501 A CN 201811525501A CN 111323439 A CN111323439 A CN 111323439A
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- 229910052770 Uranium Inorganic materials 0.000 title claims abstract description 132
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 title claims abstract description 132
- 239000002734 clay mineral Substances 0.000 title claims abstract description 121
- 238000000034 method Methods 0.000 title claims abstract description 80
- 230000008569 process Effects 0.000 title claims abstract description 42
- 239000011229 interlayer Substances 0.000 title claims abstract description 32
- 230000033558 biomineral tissue development Effects 0.000 title claims abstract description 27
- 230000003647 oxidation Effects 0.000 title claims abstract description 25
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 25
- 238000001179 sorption measurement Methods 0.000 claims abstract description 15
- 230000009471 action Effects 0.000 claims abstract description 13
- 238000004458 analytical method Methods 0.000 claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 238000002474 experimental method Methods 0.000 claims abstract description 8
- 230000035484 reaction time Effects 0.000 claims description 29
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 26
- 238000006243 chemical reaction Methods 0.000 claims description 22
- 239000011780 sodium chloride Substances 0.000 claims description 13
- 230000015572 biosynthetic process Effects 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 229910052900 illite Inorganic materials 0.000 claims description 5
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 claims description 5
- 229910021647 smectite Inorganic materials 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229910001919 chlorite Inorganic materials 0.000 claims description 4
- 229910052619 chlorite group Inorganic materials 0.000 claims description 4
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 claims description 4
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052622 kaolinite Inorganic materials 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000012863 analytical testing Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- 230000008021 deposition Effects 0.000 claims description 3
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 3
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims description 3
- 238000004949 mass spectrometry Methods 0.000 claims description 3
- 238000001819 mass spectrum Methods 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000001228 spectrum Methods 0.000 claims description 3
- 238000004876 x-ray fluorescence Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 230000001089 mineralizing effect Effects 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 23
- 230000000694 effects Effects 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910001579 aluminosilicate mineral Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- -1 uranyl ions Chemical class 0.000 description 1
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Abstract
The invention aims to provide a method for researching an ore forming process of an interlayer oxidation zone sandstone type uranium deposit by using clay minerals. Which comprises the following steps: (1) collecting a sample; (2) carrying out analysis test on the sample; (3) a clay mineral uranium adsorption experiment; (4) and summarizing an ore-forming rule. The method can reconstruct the uranium ore mineralization process of the sandstone in the interlayer oxidation zone, clarify the mineralization action mechanism, summarize the mineralization action rule and predict the uranium mineralization potential in a new area.
Description
Technical Field
The invention belongs to a comprehensive research method in the field of uranium ore geological exploration, and particularly relates to a method for researching an ore forming process of an interlayer oxidation zone sandstone-type uranium ore by using clay mineral characteristics.
Background
The uranium resource is a strategic resource for military and civil use, sandstone-type uranium deposit is the most main uranium deposit type in China, and the uranium deposit comprises an interlayer oxidation zone type, a submerged oxidation zone type, a sedimentary lithology type and a complex cause type, and is a typical extranatal post-production uranium deposit. The interlayer oxidation zone sandstone-type uranium deposit is the most important type of sandstone-type uranium deposit, and has the biggest characteristics of unique geochemical zonation and different geochemical characteristics of each zone. In the oxidation zone, solid U forms uranyl ions easy to migrate under the action of oxygen-containing water, and the transition zone forms a strong geochemical contrast condition, so that 6-valent uranium in water is precipitated and enriched. The basic condition for the formation of this unique geochemical band is the presence of permeable ore-bearing rocks capable of allowing the circulation of an aqueous solution containing oxygen and uranium; the presence of a geochemical trap or barrier which can immobilize the active uranium in the aqueous solution containing uranium and oxygen.
Clay minerals are hydrated silicate or aluminosilicate minerals formed by weathering and are widely distributed in deposits in terrestrial basins and are also common products in uranium mineralization processes. The most common lamellar clay minerals are montmorillonite, kaolinite, illite, chlorite, illite/smectite, smectite/smectite, and the like. Clay minerals are widely present in the cement of various argillaceous rocks and sands, conglomerates as an important component of land-derived clastic deposits. Since the clay mineral has fine particles and has a large surface free energy and adsorption capacity, the clay mineral has both the properties of crumb particles and colloidal particles. The aggressive surface chemistry allows the clay minerals present between the clastic particles to react preferentially with the foreign fluid and have a faster chemical reaction rate. These properties of clay minerals make them play a particular role in the process of interlayer oxidative enrichment of uranium mineralization. The clay mineral absorbs, migrates and enriches uranium elements in the interlayer infiltration mineralization action by the special properties of the clay mineral. In the process of ore formation, the clay mineral is also secondarily evolved.
Disclosure of Invention
The invention aims to provide a method for researching an ore forming process of an interlayer oxidation zone sandstone type uranium deposit by using clay minerals.
The technical scheme for realizing the purpose of the invention is as follows: a method for researching an ore forming process of an interlayer oxidized zone sandstone type uranium deposit by using clay minerals comprises the following steps:
(1) collecting samples
Collecting a plurality of samples from an interlayer oxidation zone sandstone-type uranium deposit;
(2) subjecting the sample to analytical testing
Carrying out X-ray powder crystal diffraction (XRD) analysis on a plurality of samples collected in the step (1) to determine the composition of clay minerals in the samples;
then, determining chemical components of the clay minerals by adopting X-ray fluorescence spectrum (XRF) analysis and plasma mass spectrum (ICP-MS) analysis;
observing the microscopic morphology characteristics of the clay minerals, the characteristics of mixed layer minerals in the clay minerals and occurrence forms among the clay minerals by adopting an optical microscope, a Scanning Electron Microscope (SEM) and a Transmission Electron Microscope (TEM);
determining H, O stable isotope composition of the clay mineral by solid Mass Spectrometry (MS);
(3) in the experiment of adsorbing uranium by using clay minerals,
putting 1-3 g of clay mineral into a uranium solution to adsorb uranium, wherein the reaction time is 30 min-72 h, the pH is 3-9, the ionic strength I is 0.1-0.001M NaCl, the concentration of the uranium solution is 90-360 mg/L, and the reaction temperature is 20-120 ℃; an X-ray diffractometer is used for representing the changes of the structures before and after the uranium is adsorbed by the clay minerals;
(4) summarizing ore formation law
And (4) reconstructing an ore forming process of the uranium ore in the interbedded oxidation zone sandstone according to the data in the step (3), clarifying an ore forming action mechanism, summarizing an ore forming action rule, and predicting the uranium ore forming potential of the new region.
In the method for researching the ore forming process of the interlayer oxidized zonate sandstone-type uranium deposit by using the clay mineral, in the step (2), the characteristics of the clay mineral in the interlayer oxidized zonate sandstone-type uranium deposit are researched according to the chemical components, the micro-morphology characteristics and the H \ O stable isotope composition of the clay mineral obtained by analysis.
According to the method for researching the mineralization process of the interlayer oxidation zone sandstone-type uranium deposit by using the clay mineral, the interaction relation between the clay mineral and the underground water and the mineralization hydrothermal liquid in the deposition evolution process is further researched according to the characteristics of the clay mineral in the interlayer oxidation zone sandstone-type uranium deposit.
In the method for researching the process of forming the ore of the interlayer oxidized sandstone-type uranium deposit by using the clay mineral, the clay mineral in the step (3) is montmorillonite, illite, kaolinite and chlorite.
According to the method for researching the process of forming the ore by using the clay mineral, the change of the structure before and after the clay mineral adsorbs uranium is represented by the X-ray diffractometer in the step (3), namely an isothermal equation and a thermodynamic law of adsorption of uranium by the clay mineral are discussed, and a reaction mechanism of the uranium is analyzed.
According to the method for researching the process of forming the ore by using the clay mineral, in the step (4), according to the data in the step (3), the reaction mechanism of the clay mineral is analyzed according to the adsorption isothermal equation and the thermodynamic law of the clay mineral on uranium.
According to the method for researching the process of forming the ore by using the clay mineral, 1-3 g of the clay mineral is put into a uranium solution to adsorb uranium, the reaction time is 30 min-72 h, the pH is 3-9, the ionic strength I is 0.1M-0.001M NaCl, the concentration of the uranium solution is 90-360 mg/L, and the reaction temperature is 20-120 ℃; specifically, the following conditions are set respectively:
① reaction time is 30min, 1h, 5h, 10h, 16h and 72 h;
② pH 3, 5, 7, 9;
③ ion strength I is 0.1M, 0.01M, 0.001M NaCl;
④ clay minerals 1g, 2g, 3 g;
⑤ the concentration of uranium solution is 90, 180, 270 and 360 mg/L;
⑥ the reaction temperature is 20, 80, 100 and 120 ℃.
According to the method for researching the process of forming the ore by using the clay mineral, 1-3 g of the clay mineral is put into a uranium solution to adsorb uranium, the reaction time is 30 min-72 h, the pH is 3-9, the ionic strength I is 0.1M-0.001M NaCl, the concentration of the uranium solution is 90-360 mg/L, and the reaction temperature is 20-120 ℃; the following batch experiments were specifically carried out:
batch 1: the pH value is 5, the T is 80 ℃, the initial uranium solution concentration is 90mg/L, the ionic strength I is 0, the clay mineral is 1g, and the reaction time is respectively as follows: 30min, 1h, 5h, 10h, 16h and 72 h;
batch 2: t is 80 ℃, the initial uranium solution concentration is 90mg/L, the ionic strength I is 0, the clay mineral is 1g, and the reaction time is 72 h; the pH values are 3, 5, 7 and 9 respectively;
batch 3: the pH value is 5, the T value is 80 ℃, the initial uranium solution concentration is 90mg/L, the clay mineral value is 1g, and the reaction time is 72 h; the ionic strength I is 0.1M, 0.01M and 0.001M NaCl respectively;
batch 4: the pH value is 5, the T value is 80 ℃, the initial uranium solution concentration is 90mg/L, the ionic strength I value is 0, and the reaction time is 72 h; the clay mineral content is 1g, 2g and 3g respectively;
batch 5: pH 5, T80 deg.C, ionic strength I0, clay mineral 1g, reaction time 72 h; the initial uranium solution concentration is 90mg/L, 180mg/L, 270mg/L and 360mg/L respectively;
batch 6: the pH value is 5, the initial uranium solution concentration is 90mg/L, the ionic strength I is 0, the clay mineral is 1g, and the reaction time is 72 h; the reaction temperature was 20 deg.C, 80 deg.C, 100 deg.C, 120 deg.C, respectively.
The invention has the following effects: according to the method for researching the ore formation process of the interlayer oxidation zone sandstone type uranium deposit by using the clay minerals, the ore formation process of the interlayer oxidation zone sandstone uranium deposit can be reconstructed, an ore formation action mechanism is clarified, an ore formation action rule is summarized, the uranium ore formation potential in a new region is predicted, and the method has important practical significance for guiding the uranium ore exploration work; the ore forming theory of the sandstone-type uranium ore can be further improved, and the method has important theoretical innovation significance.
Drawings
FIG. 1 is a schematic diagram of ore bed positions of a uranium deposit in a NaLing trench in an example.
Detailed Description
The method for researching the process of forming the uranium deposit of the interlayer oxidation zone sandstone type by using the clay mineral is further described by combining the attached drawings and specific examples.
As shown in fig. 1, a uranium deposit in a naught groove is located in the northeast of an erdos basin, the ore body is mainly produced in the lower sublevel of the mesodwarass troops group, uranium mineralization is obviously controlled by the boundary between green sandstone and gray sandstone, and the ore body is mainly produced in gray sandstone near the boundary.
In order to illustrate the method for researching the process of forming the ore of the interlayer oxidized zone sandstone-type uranium deposit by using the clay mineral, taking the uranium deposit in the gutter of tonguing of Ortholes basin as an example, the method for researching the process of forming the ore of the interlayer oxidized zone sandstone-type uranium deposit by using the clay mineral comprises the following steps:
(1) collecting samples
A plurality of samples are collected from uranium deposits in a Nalinggou of an Ortholes basin and sandstone-type uranium deposits in an interlayer oxidation zone.
(2) Subjecting the sample to analytical testing
Carrying out X-ray powder crystal diffraction (XRD) analysis on a plurality of samples collected in the step (1) to determine the composition of clay minerals in the samples;
then, determining chemical components of the clay minerals by adopting X-ray fluorescence spectrum (XRF) analysis and plasma mass spectrum (ICP-MS) analysis;
observing the microscopic morphology characteristics of the clay minerals, the characteristics of mixed layer minerals in the clay minerals and occurrence forms among the clay minerals by adopting an optical microscope, a Scanning Electron Microscope (SEM) and a Transmission Electron Microscope (TEM);
determining H, O stable isotope composition of the clay mineral by solid Mass Spectrometry (MS);
the result shows that the clay mineral of the uranium deposit in the Nalinggou mainly exists in the mixed base form, the average content is 10.3 percent, the clay mineral components mainly comprise smectite and kaolinite, and illite and chlorite are inferior. According to the chemical components, the micro-morphology characteristics and the composition of H \ O stable isotopes of the clay minerals, the characteristics of the clay minerals in the interlayer oxidation zone sandstone-type uranium deposit are researched, and the interaction relation between the clay minerals and underground water and ore-forming hydrothermal fluid in the deposition evolution process is further researched.
(3) In the experiment of adsorbing uranium by using clay minerals,
putting 1-3 g of clay mineral into a uranium solution to adsorb uranium, wherein the reaction time is 30 min-72 h, the pH is 3-9, the ionic strength I is 0.1-0.001M NaCl, the concentration of the uranium solution is 90-360 mg/L, and the reaction temperature is 20-120 ℃; an X-ray diffractometer is used for representing the changes of the structures before and after the uranium is adsorbed by the clay minerals; namely, the isothermal equation and the thermodynamic law of the adsorption of the clay minerals to uranium are discussed, and the reaction mechanism is analyzed.
Specifically, the following conditions are set respectively:
① reaction time is 30min, 1h, 5h, 10h, 16h and 72 h;
② pH 3, 5, 7, 9;
③ ion strength I is 0.1M, 0.01M, 0.001M NaCl;
④ clay minerals 1g, 2g, 3 g;
⑤ the concentration of uranium solution is 90, 180, 270 and 360 mg/L;
⑥ the reaction temperature is 20, 80, 100 and 120 ℃.
The following batch experiments were carried out:
batch 1: effect of reaction time on adsorption
The pH value is 5, the T is 80 ℃, the initial uranium solution concentration is 90mg/L, the ionic strength I is 0, the clay mineral is 1g, and the reaction time is respectively as follows: 30min, 1h, 5h, 10h, 16h and 72 h;
batch 2: effect of pH on adsorption
T is 80 ℃, the initial uranium solution concentration is 90mg/L, the ionic strength I is 0, the clay mineral is 1g, and the reaction time is 72 h; the pH values are 3, 5, 7 and 9 respectively;
batch 3: influence of the Ionic Strength on the adsorption
The pH value is 5, the T value is 80 ℃, the initial uranium solution concentration is 90mg/L, the clay mineral value is 1g, and the reaction time is 72 h; the ionic strength I is 0.1M, 0.01M and 0.001M NaCl respectively;
batch 4: influence of clay mineral dosage on adsorption
The pH value is 5, the T value is 80 ℃, the initial uranium solution concentration is 90mg/L, the ionic strength I value is 0, and the reaction time is 72 h; the clay mineral content is 1g, 2g and 3g respectively;
batch 5: effect of uranium solution concentration on adsorption
pH 5, T80 deg.C, ionic strength I0, clay mineral 1g, reaction time 72 h; the initial uranium solution concentrations were 90mg/L, 180mg/L, 270mg/L, and 360mg/L, respectively.
Batch 6: influence of reaction temperature on adsorption
The pH value is 5, the initial uranium solution concentration is 90mg/L, the ionic strength I is 0, the clay mineral is 1g, and the reaction time is 72 h; the reaction temperature was 20 deg.C, 80 deg.C, 100 deg.C, 120 deg.C, respectively.
(4) Summarizing ore formation law
And (4) simulating the role of the clay mineral in the formation process of the uranium deposit according to the measured clay mineral data and the environmental condition data in the step (3) according to the measured data. Rebuilding the uranium ore mineralization process of the sandstone in the interlayer oxidation zone, clarifying an mineralization action mechanism, summarizing an mineralization action rule, and predicting uranium mineralization potential in a new area.
And (4) reconstructing an ore forming process of the uranium deposit in the nano-ridge trench according to the analysis test data and the comprehensive application of the experimental results. According to the relative content and combination characteristics of clay minerals in the lower sublevel of the direct-sorting group, the paleoclimatic evolution of the mineralization stage is divided into four stages, three important climatic conversion periods are determined at the same time, and the mineralization stage is further accurately divided; rebuilding the interlayer oxidation zone forming process of the uranium deposit controlled ore of the Nalinggou channel according to the structure and stable isotope characteristics of the clay mineral, establishing a water-rock coupling action mechanism, finely dividing each sub-zone of the interlayer oxidation zone, establishing a division basis, and determining that an ore body is mainly produced in an oxidation-reduction transition sub-zone; through a clay mineral uranium adsorption experiment, an isothermal equation, a thermodynamic law and a reaction mechanism of adsorption of the clay mineral to uranium are established, and a uranium ore forming process is rebuilt.
According to the invention, by utilizing the clay mineral characteristic research method, the mineralization action process of the uranium deposit in the nano-ridge trench is effectively and systematically reconstructed, and by utilizing research results, the prediction work of the peripheral mineralization of the deposit is carried out, and the newly-obtained uranium resources are successively put into 2 places of the deposit, and the number of the newly-obtained uranium resources is thousands of tons. The working method for researching the ore forming process of the sandstone-type uranium deposit in the interlayer oxidation zone by using the clay minerals obtains remarkable theoretical research results and outstanding economic benefits in actual work, and has important theoretical innovation significance for perfecting the ore forming theory of the sandstone-type uranium deposit.
Claims (8)
1. A method for researching an ore forming process of an interlayer oxidized zone sandstone type uranium deposit by using clay minerals is characterized by comprising the following steps:
(1) collecting samples
Collecting a plurality of samples from an interlayer oxidation zone sandstone-type uranium deposit;
(2) subjecting the sample to analytical testing
Carrying out X-ray powder crystal diffraction (XRD) analysis on a plurality of samples collected in the step (1) to determine the composition of clay minerals in the samples;
then, determining chemical components of the clay minerals by adopting X-ray fluorescence spectrum (XRF) analysis and plasma mass spectrum (ICP-MS) analysis;
observing the microscopic morphology characteristics of the clay minerals, the characteristics of mixed layer minerals in the clay minerals and occurrence forms among the clay minerals by adopting an optical microscope, a Scanning Electron Microscope (SEM) and a Transmission Electron Microscope (TEM);
determining H, O stable isotope composition of the clay mineral by solid Mass Spectrometry (MS);
(3) experiment for adsorbing uranium by clay mineral
Putting 1-3 g of clay mineral into a uranium solution to adsorb uranium, wherein the reaction time is 30 min-72 h, the pH is 3-9, the ionic strength I is 0.1-0.001M NaCl, the concentration of the uranium solution is 90-360 mg/L, and the reaction temperature is 20-120 ℃; an X-ray diffractometer is used for representing the changes of the structures before and after the uranium is adsorbed by the clay minerals;
(4) summarizing ore formation law
And (4) reconstructing an ore forming process of the uranium ore in the interbedded oxidation zone sandstone according to the data in the step (3), clarifying an ore forming action mechanism, summarizing an ore forming action rule, and predicting the uranium ore forming potential of the new region.
2. The method for researching the mineralization process of the uranium deposit of the interbedded oxidized zone sandstone type by using the clay mineral as claimed in claim 1, wherein the method comprises the following steps: in the step (2), the characteristics of the clay minerals in the interlayer oxidized zone sandstone-type uranium deposit are researched according to the chemical components, the microscopic morphology characteristics and the H \ O stable isotope composition of the clay minerals obtained by analysis.
3. The method for researching the mineralization process of the uranium deposit of the interbedded oxidized zone sandstone type by using the clay mineral as claimed in claim 2, wherein the method comprises the following steps: according to the characteristics of the clay minerals in the obtained interlayer oxidized zone sandstone-type uranium deposit, the interaction relation between the clay minerals and underground water and mineralizing hydrothermal liquid in the deposition and evolution process is further researched.
4. The method for researching the mineralization process of the uranium deposit of the interbedded oxidized zone sandstone type by using the clay mineral as claimed in claim 1, wherein the method comprises the following steps: the clay mineral in the step (3) is montmorillonite, illite, kaolinite, chlorite and smectite.
5. The method for researching the mineralization process of the uranium deposit of the interbedded oxidized zone sandstone type by using the clay mineral as claimed in claim 1, wherein the method comprises the following steps: and (3) representing the change of the structure before and after the uranium is adsorbed by the clay mineral by using an X-ray diffractometer, namely discussing an isothermal equation and a thermodynamic rule of the adsorption of the uranium by the clay mineral and analyzing a reaction mechanism of the uranium.
6. The method for researching the mineralization process of the uranium deposit of the interbedded oxidized zone sandstone type by using the clay mineral, according to claim 5, wherein the method comprises the following steps: and (4) analyzing the reaction mechanism of the clay mineral according to the adsorption isothermal equation and the thermodynamic rule of the clay mineral on uranium according to the data in the step (3).
7. The method for researching the mineralization process of the uranium deposit of the interbedded oxidized zone sandstone type by using the clay mineral as claimed in claim 1, wherein the method comprises the following steps: putting 1-3 g of clay mineral into a uranium solution to adsorb uranium, wherein the reaction time is 30 min-72 h, the pH is 3-9, the ionic strength I is 0.1-0.001M NaCl, the uranium solution concentration is 90-360 mg/L, and the reaction temperature is 20-120 ℃; specifically, the following conditions are set respectively:
① reaction time is 30min, 1h, 5h, 10h, 16h and 72 h;
② pH 3, 5, 7, 9;
③ ion strength I is 0.1M, 0.01M, 0.001M NaCl;
④ clay minerals 1g, 2g, 3 g;
⑤ the concentration of uranium solution is 90, 180, 270 and 360 mg/L;
⑥ the reaction temperature is 20, 80, 100 and 120 ℃.
8. The method for researching the mineralization process of the uranium deposit of the interbedded oxidized zone sandstone type by using the clay mineral as claimed in claim 7, wherein the method comprises the following steps: putting 1-3 g of clay mineral into a uranium solution to adsorb uranium, wherein the reaction time is 30 min-72 h, the pH is 3-9, the ionic strength I is 0.1-0.001M NaCl, the uranium solution concentration is 90-360 mg/L, and the reaction temperature is 20-120 ℃; the following batch experiments were specifically carried out:
batch 1: the pH value is 5, the T is 80 ℃, the initial uranium solution concentration is 90mg/L, the ionic strength I is 0, the clay mineral is 1g, and the reaction time is respectively as follows: 30min, 1h, 5h, 10h, 16h and 72 h;
batch 2: t is 80 ℃, the initial uranium solution concentration is 90mg/L, the ionic strength I is 0, the clay mineral is 1g, and the reaction time is 72 h; the pH values are 3, 5, 7 and 9 respectively;
batch 3: the pH value is 5, the T value is 80 ℃, the initial uranium solution concentration is 90mg/L, the clay mineral value is 1g, and the reaction time is 72 h; the ionic strength I is 0.1M, 0.01M and 0.001M NaCl respectively;
batch 4: the pH value is 5, the T value is 80 ℃, the initial uranium solution concentration is 90mg/L, the ionic strength I value is 0, and the reaction time is 72 h; the clay mineral content is 1g, 2g and 3g respectively;
batch 5: pH 5, T80 deg.C, ionic strength I0, clay mineral 1g, reaction time 72 h; the initial uranium solution concentration is 90mg/L, 180mg/L, 270mg/L and 360mg/L respectively;
batch 6: the pH value is 5, the initial uranium solution concentration is 90mg/L, the ionic strength I is 0, the clay mineral is 1g, and the reaction time is 72 h; the reaction temperature was 20 deg.C, 80 deg.C, 100 deg.C, 120 deg.C, respectively.
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