CN114264608B - Device and method for simulating pyrite growth mechanism - Google Patents
Device and method for simulating pyrite growth mechanism Download PDFInfo
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- CN114264608B CN114264608B CN202111673925.9A CN202111673925A CN114264608B CN 114264608 B CN114264608 B CN 114264608B CN 202111673925 A CN202111673925 A CN 202111673925A CN 114264608 B CN114264608 B CN 114264608B
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- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 229910052683 pyrite Inorganic materials 0.000 title claims abstract description 76
- 239000011028 pyrite Substances 0.000 title claims abstract description 76
- 230000007246 mechanism Effects 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000006243 chemical reaction Methods 0.000 claims abstract description 91
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims abstract description 39
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000001069 Raman spectroscopy Methods 0.000 claims abstract description 19
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 16
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 16
- 150000001335 aliphatic alkanes Chemical class 0.000 claims abstract description 15
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 15
- 239000011707 mineral Substances 0.000 claims abstract description 15
- 238000012916 structural analysis Methods 0.000 claims abstract description 6
- 229910001608 iron mineral Inorganic materials 0.000 claims description 31
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 28
- 238000004891 communication Methods 0.000 claims description 20
- 238000000605 extraction Methods 0.000 claims description 14
- 229910052742 iron Inorganic materials 0.000 claims description 14
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 12
- 238000001556 precipitation Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 10
- 239000002244 precipitate Substances 0.000 claims description 10
- 239000012153 distilled water Substances 0.000 claims description 7
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- -1 sulfide ions Chemical class 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 229910001448 ferrous ion Inorganic materials 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- MVFCKEFYUDZOCX-UHFFFAOYSA-N iron(2+);dinitrate Chemical compound [Fe+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MVFCKEFYUDZOCX-UHFFFAOYSA-N 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000010453 quartz Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 239000013078 crystal Substances 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 14
- 238000012544 monitoring process Methods 0.000 abstract description 7
- 238000004088 simulation Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 45
- 238000002474 experimental method Methods 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 7
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 6
- 239000011593 sulfur Substances 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 229910001447 ferric ion Inorganic materials 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000007790 solid phase Substances 0.000 description 3
- 238000001237 Raman spectrum Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001027 hydrothermal synthesis Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 229910052979 sodium sulfide Inorganic materials 0.000 description 2
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000011176 pooling Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004729 solvothermal method Methods 0.000 description 1
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Abstract
The application is suitable for the technical field of mineral growth simulation, and provides a device and a method for simulating a pyrite growth mechanism. The device for simulating the pyrite growth mechanism comprises a reaction vessel, a functional pipeline and a Raman monitor. According to the device for simulating the pyrite growth mechanism, provided by the application, the transparent reaction container, the functional pipeline capable of providing a vacuum environment, sulfide solution and high-pressure carbon dioxide or alkane gas for the reaction container and the Raman monitor capable of carrying out structural analysis and identification on structural molecules in the reaction container in real time are arranged, so that the continuous monitoring of the crystal growth process of pyrite is realized.
Description
Technical Field
The application belongs to the technical field of mineral growth simulation, and particularly relates to a device and a method for simulating a pyrite growth mechanism.
Background
Pyrite is often formed under various geological conditions as the most widely distributed sulfide in the crust, and the crystal forms of pyrite formed in different sedimentary rock environments are different in size, so that the crystal habit of pyrite is extremely sensitive to environmental changes formed by pyrite. Pyrite with simpler crystal forms is usually formed under the conditions of low saturation, sulfur concentration and proper temperature; the pyrite crystal forms formed under the conditions of sufficient material sources and high saturation and sulfur concentration gradually tend to be complex, and are between an cube and a pentagonal dodecahedron; in hydrothermal-induced systems, cubic pyrite is often formed in low sulfur content environments, while more complex crystalline forms such as pentagonal dodecahedron pyrite are formed in high sulfur concentration, moderate temperature environments. The characteristics of the pyrite such as crystal form characteristics, distribution mode, laser Raman spectrum and the like are related to the physical and chemical conditions and environmental medium conditions formed by the pyrite, so the pyrite has extremely important significance for distinguishing different ore formation types, explaining the spatial change rule of a reservoir, evaluating and predicting mineral deposits and oil and gas reservoirs. Although pyrite is a common mineral in sandstone reservoirs, its absolute content in the reservoir is not high, and the learner has pointed out that the pyrite formation of minerals during the diagenetic process itself has little effect on the reservoir, the specific diagenetic environment represented by pyrite formation is closely related to the reservoir, so the developmental zone of pyrite should have a certain correlation with the reservoir properties. The chemical mechanism and environment of pyrite formation are being studied too much by internal and external scientists, but the systematic study of pyrite and reservoir relationship is less, and the influence of pyrite on reservoir development is still under further study.
The preparation method of pyrite crystal includes hydrothermal method and solvothermal method, the hydrothermal method is to use solution as reaction medium in specially made autoclave, and to make high temperature and high pressure reaction condition in the autoclave, to re-dissolve and re-crystallize indissolvable or insoluble matter, james B Murowchick H L Barnes et al uses NH4Cl solution as medium, to study the influence of temperature and supersaturation degree on the morphology of pyrite crystal grown by hydrothermal solution at 250-500 deg.C, to obtain needle, cube, pentagon dodecahedron, etc. crystal forms, but the purity of the compound is not high, the purity of the product is not enough, and the defects of distinguishing the product from the reactant are not enough; sweeney and Kaplan have reached an important conclusion that they consider the formation of pyrite to be an important step prior to the formation of strawberry-like pyrite, but there are some cases where there is a case where pyrite formation but failure to form strawberry-like pyrite aggregates, resulting in some experimental results being self-forming pyrite crystals. So that a learner suspects whether an experiment performed in a laboratory meets real field geological conditions. The former experiment method has the defects of continuity and the like, the closed environment in the reaction process can not continuously acquire experimental data, the crystal growth process of pyrite is lack of continuous record, the experiment needs to be stopped immediately and samples are extracted for testing instead of on-line real-time, so that inaccurate corresponding relation between the result and time can be caused, the contact of the samples with the outside is difficult to avoid in analysis and sampling, and the defect that the experimental environment is damaged by oxidation exists.
Disclosure of Invention
The application aims to provide a device for simulating a pyrite growth mechanism, which aims to continuously monitor the crystal growth process of pyrite.
In order to achieve the above purpose, the technical scheme adopted by the application is that a device for simulating a pyrite growth mechanism is provided, which comprises:
the reaction container is made of transparent materials, and one end of the reaction container is provided with an opening;
a functional pipeline; the sulfide solution collecting device comprises a gas supply and exhaust branch, a sulfide solution branch and a first collecting branch, wherein the sulfide solution branch is provided with sulfide ions, the gas supply and exhaust branch and the sulfide solution branch are arranged in parallel and then are connected in series with the first collecting branch, the gas supply and exhaust branch and the sulfide solution branch are respectively and selectively communicated with the first collecting branch, and the first collecting branch is used for being communicated with an opening of a reaction container in a sealing way; the air supply and extraction branch comprises an air supply sub-branch and an extraction sub-branch which are arranged in parallel, wherein the air supply sub-branch comprises a first air source for providing carbon dioxide or alkane gas, a first pipeline communicated with the first air source and a first valve which is arranged on the first pipeline and controls the on-off of the first pipeline; the air extraction subcircuit comprises a vacuum pump, a second pipeline communicated with the vacuum pump and a second valve which is arranged on the second pipeline and controls the on-off of the second pipeline; and
and the Raman monitor is used for carrying out structural analysis and identification on structural molecules in the reaction container in real time.
In one possible implementation manner, the air supply and air extraction branch further comprises a second collecting sub-branch, and the air supply sub-branch and the air extraction sub-branch are connected in parallel and then connected in series with the second collecting sub-branch, and the second collecting sub-branch is selectively communicated with the first collecting sub-branch.
In one possible implementation, the second collecting sub-branch includes a collecting pipe and a third valve mounted on the collecting pipe for controlling the connection and disconnection of the collecting pipe.
In one possible implementation, the collecting pipe is provided with a pressure gauge for detecting the air pressure in the collecting pipe.
In one possible implementation, the sulfide solution branch includes an injector loaded with sulfide solution, a third pipe in communication with the injector, and a fourth valve mounted on the third pipe for controlling on-off of the third pipe.
In one possible implementation, the reaction vessel is a fused capillary quartz tube.
It is another object of the present application to provide a method of simulating pyrite growth mechanisms comprising:
obtaining iron minerals;
putting a preset amount of iron ore into distilled water for cleaning operation to obtain iron mineral precipitation liquid;
placing a first preset dose of the iron ore precipitation solution into the reaction container;
vacuumizing the reaction container;
injecting a second predetermined dose of sulfide solution into the reaction vessel;
introducing carbon dioxide or alkane gas into the reaction container, and enabling the reaction container to be under preset pressure;
turning on the raman monitor.
It is yet another object of the present application to provide another method of simulating pyrite growth mechanisms, comprising:
obtaining iron minerals;
putting a preset amount of the iron ore into the reaction container;
vacuumizing the reaction container;
injecting a second predetermined dose of sulfide solution into the reaction vessel;
introducing carbon dioxide or alkane gas into the reaction container, and enabling the reaction container to be under preset pressure;
turning on the raman monitor.
In one possible implementation, the obtaining the iron mineral includes:
obtaining an iron nitrate solution;
obtaining a potassium hydroxide solution;
mixing and stirring the ferric nitrate solution and the potassium hydroxide solution to obtain ferrous ion mineral precipitate;
adding distilled water into the ferrous ion mineral precipitate to dilute, and heating to obtain iron mineral precipitate liquid;
and filtering, washing and drying the iron mineral precipitation liquid to obtain the iron mineral.
Compared with the prior art, the device for simulating the pyrite growth mechanism provided by the application realizes continuous monitoring of the crystal growth process of pyrite by arranging the transparent reaction vessel, the functional pipeline capable of providing vacuum environment, sulfide solution and high-pressure carbon dioxide or alkane gas for the reaction vessel and the Raman monitor capable of carrying out structural analysis and identification on structural molecules in the reaction vessel in real time.
Drawings
FIG. 1 is a schematic diagram of an apparatus for simulating pyrite growth mechanisms provided by an embodiment of the present application;
FIG. 2 is a flow chart of a method of simulating pyrite growth mechanisms provided by embodiments of the present application;
FIG. 3 is a flow chart of another method of simulating pyrite growth mechanisms provided by embodiments of the present application.
In the figure:
100. a reaction vessel;
200. a functional pipeline; 210. a sulfide solution branch; 211. a syringe; 212. a fourth valve; 220. a first collection branch; 230. a gas supply sub-branch; 231. a first air source; 232. a first valve; 240. a suction sub-branch; 241. a vacuum pump; 242. a second valve; 250. a second pooling sub-branch; 251. a third valve; 252. a pressure gauge;
300. a raman monitor.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
It should be noted that the terms "length," "width," "height," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," "tail," and the like indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the application.
It should also be noted that unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. Furthermore, the meaning of "a plurality of", "a number" is two or more, unless explicitly defined otherwise.
Referring to fig. 1, an apparatus for simulating pyrite growth mechanism according to an embodiment of the present application will now be described. The device for simulating the pyrite growth mechanism comprises a reaction vessel 100, a functional pipeline 200 and a Raman monitor 300.
The reaction vessel 100 is made of transparent material to facilitate operator observation and monitoring by raman monitor. One end of the reaction vessel 100 is provided with an opening for communicating with the functional pipeline 200.
The functional circuit 200 comprises a gas supply and extraction branch, a sulfide solution branch 210 for providing sulfide ions, and a first collection branch 220. The gas supply and exhaust branch and the sulfide solution branch 220 are two branches connected in parallel, the two branches are connected in parallel and then connected in series with the first collecting branch 220, the first collecting branch 220 is used for being communicated with the opening of the reaction vessel 100 in a sealing way, the first collecting branch 220 mainly comprises a conveying pipe which is used for communicating the gas supply and exhaust branch or the sulfide solution branch 210 with the reaction vessel 100, and the conveying pipe can be communicated with the opening of the reaction vessel 100 in a sealing way through structures such as a high-pressure sealing ring.
The gas and suction branches and the sulfide solution branch 210 are in selective communication with a first collection branch 220, respectively. I.e. the gas and air extraction branches and the sulphide solution branch 210 are provided with associated on-off valve structures, respectively, to control the communication or non-communication of the branch with the first collecting branch 220.
The air supply and extraction branch includes an air supply sub-branch 230 and an extraction sub-branch 240 which are arranged in parallel, and the air supply sub-branch 230 includes a first air source 231 for providing carbon dioxide or alkane gas (e.g. methane), a first pipeline which is communicated with the first air source 231, and a first valve 232 which is installed on the first pipeline and controls the on-off of the first pipeline. Opening and closing of the first valve 232 may control communication or non-communication of the air supply subcircuit 230 with the first collection subcircuit 220. The gas supply sub-branch 230 can supply carbon dioxide or alkane gas to the reaction vessel 100 to subject the interior of the reaction vessel 100 to a high pressure environment required for the experiment and to provide carbon elements required for the pyrite growth process to sufficiently simulate the mechanism of the pyrite growth process.
The suction sub-branch 240 includes a vacuum pump 241, a second pipe communicating with the vacuum pump 241, and a second valve 242 installed on the second pipe and controlling the on-off of the second pipe. Opening and closing of the second valve 242 controls communication or non-communication of the pumping subcircuit 240 with the first manifold branch 220. The pumping subcircuit 240 enables the reaction vessel 100 to achieve the (near) vacuum environment required for the experiment.
Of course, because the supply and exhaust branches include two sub-branches in parallel, the supply and exhaust branches can be considered to be not in communication with the first collection branch 220 only when both the first valve 232 and the second valve 242 are closed.
Raman monitor 300 is a prior art technique for performing structural analysis and identification of structural molecules within reaction vessel 100 in real time. The laser Raman method is used for omnibearing monitoring in the whole experiment process, and because the experiment is carried out in a transparent high-pressure cavity, the functions of photographing, transmitting or receiving Raman signals and the like can be realized on a solid phase in a solution, a high-pressure methane or carbon dioxide solid phase, and the like, different positions of the solid phase are selected during monitoring, and laser is kept focused at the central position of the horizontally placed high-pressure cavity during measurement so as to obtain the best observation effect, and different spectrum acquisition ranges are adopted for different phase states; the raman monitoring system 300 can perform structural analysis and identification on pyrite molecules (or molecules in various states in the growth process) in the reaction vessel 100, and after the test result is processed by drawing software, the pyrite crystal growth process can be more finely and comprehensively described through the combined trends of displacement, quantity and the like of the scattering peaks of the raman spectrum.
For specific use reference is made to the method of simulating pyrite growth mechanisms in the examples that follow.
Compared with the prior art, the device for simulating the pyrite growth mechanism provided by the embodiment of the application realizes continuous monitoring of the crystal growth process of pyrite by arranging the transparent reaction vessel, the functional pipeline capable of providing vacuum environment, sulfide solution and high-pressure carbon dioxide or alkane gas for the reaction vessel and the Raman monitor for analyzing and identifying the structure molecules in the reaction vessel in real time.
In some embodiments, referring to fig. 1, the air supply and exhaust branch further includes a second collecting sub-branch 250, and the air supply sub-branch 230 and the exhaust sub-branch 240 are connected in parallel and then connected in series with the second collecting sub-branch 250. The second collection subcircuit 250 is selectively communicable with the first collection subcircuit 220, i.e., an associated switching valve structure is provided in the second collection subcircuit 250 to control communication or non-communication of the subcircuit with the first collection subcircuit 220.
In some embodiments, referring to fig. 1, the second collecting sub-branch 250 includes a collecting pipe and a third valve 251 mounted on the collecting pipe for controlling the connection and disconnection of the collecting pipe. The collection conduit is a transfer conduit for communicating the supply sub-branch 230 or the exhaust sub-branch 240 with the first collection branch 220. Opening and closing of the third valve 251 can control the communication or non-communication of the second collecting sub-branch 250 with the first collecting sub-branch 220.
In some embodiments, referring to fig. 1, a pressure gauge 252 is mounted on the collection line for detecting the pressure in the collection line, so that an operator can observe the pressure in the reaction vessel 100 (e.g., observe whether the initial stage of the experiment meets the desired vacuum environment and whether the subsequent stage meets the desired high pressure environment).
In some embodiments, referring to fig. 1, the sulfide solution branch 210 includes an injector 211 loaded with sulfide solution, a third pipe in communication with the injector 211, and a fourth valve 212 mounted on the third pipe for controlling on-off of the third pipe. Opening and closing the fourth valve 212 may control communication or non-communication of the sulfide solution branch 210 with the first collection branch 220. In the experiment, the supply of sulfur ions required for the reaction to the reaction vessel 100 can be achieved by operating the injector 211.
In some embodiments, referring to FIG. 1, the reaction vessel 100 is a fused capillary quartz tube that can withstand high pressure environments and is transparent. Preferably, the fused capillary quartz tube is configured as a tube body having a length of about 10cm and an inner diameter of about 1cm, the temperature and pressure within the chamber can be easily controlled, the pressure gauge 252 can monitor the readings in real time, and the total experimental temperature can be controlled at 24 ℃.
Referring to fig. 2, based on the same inventive concept, the embodiment of the present application also provides a method for simulating a pyrite growth mechanism, which is based on the apparatus for simulating a pyrite growth mechanism in the above embodiment. The method for simulating the pyrite growth mechanism provided by the embodiment has all the beneficial effects of the device for simulating the pyrite growth mechanism.
The embodiment of the application also provides a method for simulating a pyrite growth mechanism, which comprises the following steps:
s100: obtaining the iron mineral.
S200: and (3) putting a preset amount of iron ore into distilled water for cleaning operation to obtain iron mineral precipitation water. Of course, the iron ore must be cleaned in a single vessel. Since the iron mineral particles are relatively small, iron mineral precipitation water is obtained.
S300: a first predetermined dose (a few doses, about 1 to 2 ml) of iron mineral precipitated water is placed into the reaction vessel 100, and of course, the reaction vessel 100 is still open during the placement process, and after the placement, the first collection branch 220 needs to be in sealed communication with the reaction vessel 100, so that the functional pipeline 200 is in sealed communication with the reaction vessel 100.
S400: the reaction vessel 100 is evacuated. Specifically, the second valve 242 and the third valve 251 are opened, the first valve 232 and the fourth valve 212 are closed, and then the vacuum pump 241 is turned on, and the requirement for the experiment is met when the press 252 reaches approximately 0. After the evacuation is completed, the second valve 242 and the third valve 251 are closed, and the vacuum pump 241 is closed.
S500: a second predetermined dose (a small dose, appropriate for the iron ore precipitation water) of sulphide solution is injected into the reaction vessel 100. The method specifically comprises the following steps: the first valve 232, the second valve 242 and the third valve 251 are closed, the fourth valve 212 is opened, and the sulfide solution is injected into the reaction vessel 100 by the syringe 211 to supply sulfide ions for the reaction. After injection of the sulfide solution is completed, the fourth valve 212 is closed.
S600: carbon dioxide or an alkane gas is introduced into the reaction vessel 100, and the reaction vessel 100 is brought to a preset pressure. The specific preset pressure is matched with the environment of pyrite growth to be simulated. The method specifically comprises the following steps: the first valve 232 and the third valve 251 are opened, the second valve 242 and the fourth valve 212 are closed, and of course, the first gas source 231 needs to be opened, and then the first gas source 231 supplies carbon dioxide or alkane gas into the reaction vessel 100 to provide carbon element for the reaction. When the press 251 shows that the preset pressure is reached, the first valve 232 and the third valve 251 are closed, so that the reaction vessel 100 is pressurized.
S700 turns on the raman monitor 300 to monitor the reaction in the reaction vessel 100.
The whole experimental operation process is continuous, and the pyrite growth mechanism can be continuously observed and simulated.
In some embodiments, a method of obtaining an iron mineral S100 specifically includes:
s110: and obtaining an iron nitrate solution. Specifically 100ml of 150. Mu.g/ml ferric nitrate solution.
S120: a potassium hydroxide solution was obtained. Specifically 180ml of 600. Mu.g/ml potassium hydroxide solution.
S130, mixing and stirring the ferric nitrate solution and the potassium hydroxide solution in a plastic wide-mouth bottle to obtain reddish brown ferric ion mineral precipitate.
S140 add distilled water to 2L to the plastic jar for dilution. Subsequent heating, the unstable ferric ion minerals are converted into compact yellow-brown iron minerals (become ferrous minerals) to obtain iron ore precipitation solutions.
And S150, filtering, washing and drying the iron mineral precipitate to obtain the iron mineral.
In some embodiments, another method of obtaining an iron mineral at S100 specifically includes: the experimental medicine produced by a chemical reagent factory, namely ferrous sulfide, is adopted. The ferrous sulfide of the experimental medicine is in a block shape and is unfavorable for the vulcanization reaction, so that the ferrous sulfide needs to be ground into powder in advance.
In some embodiments, the sulfide solution may be a 200-300 μg/ml sodium sulfide solution.
Referring to fig. 3, based on the same inventive concept, the embodiment of the present application also provides another method for simulating the pyrite growth mechanism, which is based on the apparatus for simulating the pyrite growth mechanism in the above embodiment. The method for simulating the pyrite growth mechanism provided by the embodiment has all the beneficial effects of the device for simulating the pyrite growth mechanism.
The embodiment of the application also provides a method for simulating a pyrite growth mechanism, which comprises the following steps:
s100: obtaining iron minerals;
s200: a predetermined amount of iron ore is put into the reaction vessel 100; of course, the process of placing the reaction vessel 100 is still open, and the first collection branch 220 is in sealed communication with the reaction vessel 100 after placement.
S300: the reaction vessel 100 is evacuated. Specifically, the second valve 242 and the third valve 251 are opened, the first valve 232 and the fourth valve 212 are closed, and then the vacuum pump 241 is turned on, and the requirement for the experiment is met when the press 252 reaches approximately 0. After the evacuation is completed, the second valve 242 and the third valve 251 are closed, and the vacuum pump 241 is closed. It should be noted that, of course, since the reaction vessel 100 is filled with the iron mineral in advance and then vacuumized, a filter screen or filter cloth structure (capable of ventilation) for preventing the iron mineral from being reversely pumped out is fixed at the end of the first collecting branch 220 communicating with the reaction vessel 100.
S400: a second predetermined dose (a small dose, adapted to the iron content) of sulphide solution is injected into the reaction vessel 100. The method specifically comprises the following steps: the first valve 232, the second valve 242 and the third valve 251 are closed, the fourth valve 212 is opened, and the sulfide solution is injected into the reaction vessel 100 by the syringe 211 to supply sulfide ions for the reaction. After injection of the sulfide solution is completed, the fourth valve 212 is closed.
S500: carbon dioxide or an alkane gas is introduced into the reaction vessel 100, and the reaction vessel 100 is brought to a preset pressure. The specific preset pressure is matched with the environment of pyrite growth to be simulated. The method specifically comprises the following steps: the first valve 232 and the third valve 251 are opened, the second valve 242 and the fourth valve 212 are closed, and of course, the first gas source 231 needs to be opened, and then the first gas source 231 supplies carbon dioxide or alkane gas into the reaction vessel 100 to provide carbon element for the reaction. When the press 251 shows that the preset pressure is reached, the first valve 232 and the third valve 251 are closed to maintain the pressure of the reaction vessel 100
S600: the raman monitor 300 is turned on to monitor the reaction in the reaction vessel 100.
In some embodiments, a method of obtaining an iron mineral S100 specifically includes:
s110: and obtaining an iron nitrate solution. Specifically 100ml of 150. Mu.g/ml ferric nitrate solution.
S120: a potassium hydroxide solution was obtained. Specifically 180ml of 600. Mu.g/ml potassium hydroxide solution.
S130, mixing and stirring the ferric nitrate solution and the potassium hydroxide solution in a plastic wide-mouth bottle to obtain reddish brown ferric ion mineral precipitate.
S140 add distilled water to 2L to the plastic jar for dilution. Subsequent heating, the unstable ferric ion minerals are converted into compact yellow-brown iron minerals (become ferrous minerals) to obtain iron ore precipitation solutions.
And S150, filtering, washing and drying the iron mineral precipitate to obtain the iron mineral.
In some embodiments, another method of obtaining an iron mineral at S100 specifically includes: the experimental medicine produced by a chemical reagent factory, namely ferrous sulfide, is adopted. The ferrous sulfide of the experimental medicine is in a block shape and is unfavorable for the vulcanization reaction, so that the ferrous sulfide needs to be ground into powder in advance.
In some embodiments, the sulfide solution may be a 200-300 μg/ml sodium sulfide solution.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.
Claims (9)
1. An apparatus for simulating a pyrite growth mechanism, comprising:
the reaction container is made of transparent materials, and one end of the reaction container is provided with an opening;
a functional pipeline; the sulfide solution collecting device comprises a gas supply and exhaust branch, a sulfide solution branch and a first collecting branch, wherein the sulfide solution branch is provided with sulfide ions, the gas supply and exhaust branch and the sulfide solution branch are arranged in parallel and then are connected in series with the first collecting branch, the gas supply and exhaust branch and the sulfide solution branch are respectively and selectively communicated with the first collecting branch, and the first collecting branch is used for being communicated with an opening of a reaction container in a sealing way; the air supply and extraction branch comprises an air supply sub-branch and an extraction sub-branch which are arranged in parallel, wherein the air supply sub-branch comprises a first air source for providing carbon dioxide or alkane gas, a first pipeline communicated with the first air source and a first valve which is arranged on the first pipeline and controls the on-off of the first pipeline; the air extraction subcircuit comprises a vacuum pump, a second pipeline communicated with the vacuum pump and a second valve which is arranged on the second pipeline and controls the on-off of the second pipeline; and
and the Raman monitor is used for carrying out structural analysis and identification on structural molecules in the reaction container in real time.
2. The apparatus for simulating a pyrite growth mechanism according to claim 1, wherein the air supply and air extraction sub-branch further comprises a second collection sub-branch, the air supply sub-branch and the air extraction sub-branch being arranged in parallel and then connected in series with the second collection sub-branch, the second collection sub-branch being selectively communicable with the first collection sub-branch.
3. The apparatus for simulating a pyrite growth mechanism according to claim 2, wherein the second collection sub-branch includes a collection pipe and a third valve mounted on the collection pipe for controlling the connection and disconnection of the collection pipe.
4. A device for simulating a pyrite growth mechanism according to claim 3, wherein the collection conduit is fitted with a pressure gauge for detecting the air pressure in the collection conduit.
5. A device for simulating a pyrite growth mechanism according to any of claims 1-4, wherein the sulfide solution branch includes an injector loaded with sulfide solution, a third conduit in communication with the injector, and a fourth valve mounted on the third conduit for controlling the on-off of the third conduit.
6. An apparatus for modeling pyrite growth mechanism according to any of claims 1-4, wherein the reaction vessel is a fused capillary quartz tube.
7. A method of simulating a pyrite growth mechanism based on the apparatus for simulating a pyrite growth mechanism according to any of claims 1-6, comprising:
obtaining iron minerals;
putting a preset amount of iron ore into distilled water for cleaning operation to obtain iron mineral precipitation liquid;
placing a first preset dose of the iron ore precipitation solution into the reaction container;
vacuumizing the reaction container;
injecting a second predetermined dose of sulfide solution into the reaction vessel;
introducing carbon dioxide or alkane gas into the reaction container, and enabling the reaction container to be under preset pressure;
turning on the raman monitor.
8. A method of simulating a pyrite growth mechanism based on the apparatus for simulating a pyrite growth mechanism according to any of claims 1-6, comprising:
obtaining iron minerals;
putting a preset amount of the iron ore into the reaction container;
vacuumizing the reaction container;
injecting a second predetermined dose of sulfide solution into the reaction vessel;
introducing carbon dioxide or alkane gas into the reaction container, and enabling the reaction container to be under preset pressure;
turning on the raman monitor.
9. A method of modeling pyrite growth mechanism according to claim 7 or 8, wherein the obtaining iron species includes:
obtaining an iron nitrate solution;
obtaining a potassium hydroxide solution;
mixing and stirring the ferric nitrate solution and the potassium hydroxide solution to obtain ferrous ion mineral precipitate;
adding distilled water into the ferrous ion mineral precipitate to dilute, and heating to obtain iron mineral precipitate liquid;
and filtering, washing and drying the iron mineral precipitation liquid to obtain the iron mineral.
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