Rapid argillization sample polished section and preparation method thereof
By using epoxy resin for heating, curing, and cooling, the problems of agglomeration and dissolution in ore sample preparation were solved, the contrast of mineral boundaries was improved, and efficient and accurate sample analysis was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BEIJING MINING & METALLURGICAL TECH GRP CO LTD
- Filing Date
- 2026-02-27
- Publication Date
- 2026-05-08
AI Technical Summary
Existing technologies are ill-suited to the diverse needs of mineral sample preparation, leading to problems such as agglomeration of fine-particle samples, dissolution of water-soluble samples, and pitting of porous samples, which affect the recognition performance of automated analysis equipment.
High-quality polished sheets of mud-like samples were prepared by heating and curing a mixture of epoxy resin, diluent, and curing agent, combined with reduction, stirring, cooling, and post-processing steps.
It achieves clearer mineral boundaries, makes it easier to distinguish epoxy resin adhesive from gangue minerals, improves contrast under a microscope, provides more representative samples, and provides an efficient and accurate data foundation for mineralogy research.
Smart Images
Figure CN121994568A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of petrographic sample preparation, and in particular to a rapid method for preparing mud-like sample slides. Background Technology
[0002] In the research process of mineral resource development and utilization, the first step is to determine the properties of ores and various products, and to conduct research on key mineral characteristic parameters. In this research process, whether using manual optical microscopy or automated mineral analysis systems such as MLA and AMICS, it is essential to first prepare samples into optical sections suitable for instrumental testing. Therefore, preparing representative optical sections that fully and accurately reflect the complete characteristics of the samples is fundamental to conducting research on the microscopic characteristics or physical properties of ores and various products, including process mineralogy and petrography. Sample preparation is particularly crucial in automated mineral analysis.
[0003] As mineral resource development deepens towards leaner, finer, and more complex deposits, the types and properties of samples used in research are becoming increasingly diverse and specialized. Due to the specific differences in their properties, conventional sample preparation methods are no longer fully applicable to many samples. For example, fine-particle samples are prone to agglomeration and cannot be identified; the soluble portion of water-soluble samples dissolves during polishing, failing to fully reflect the overall sample composition; and porous samples are prone to pitting, making them difficult to identify using automated analysis equipment. Therefore, researching sample preparation methods adapted to the specific characteristics of a particular sample has become a crucial part of process mineralogy research. Developing novel, efficient, and controllable light-curing technology has become a key direction for overcoming technical bottlenecks in this field and propelling process mineralogy research to a higher level. Summary of the Invention
[0004] The purpose of this application is to provide a rapid method for preparing mud-based sample optical sheets and the same, in order to solve the above-mentioned problems.
[0005] To achieve the above objectives, this application adopts the following technical solution: This application provides a rapid method for preparing a light film of a mud-like sample, comprising: The collected muddy samples were reduced to obtain analytical samples, and the sampling amount was determined according to the sample fineness. Mix epoxy resin, diluent, and curing agent to prepare a mixed liquid; Pour a portion of the mixture into the bottom of the mold, add the analytical sample, stir, and add the remaining mixture until there are no obvious bubbles; A first sample is obtained by heating at a first temperature, holding at that temperature, and then stirring. The first sample is then heated and cured at a second temperature to obtain a second sample. After the heating and curing are completed, the sample block is immediately cooled. The completely solidified sample block was post-processed to produce a light film.
[0006] Optionally, the reduction can be performed using the conical quartering method; the weight of the sample is determined based on the mass percentage of -200 mesh mineral particles in the sample, and the higher the mass percentage of -200 mesh mineral particles in the sample, the less weight of the sample is taken.
[0007] Optionally, the reduction satisfies the following relationship: When the proportion of -200 mesh mineral particles in the mud sample is less than 60%, the sampling amount is 0.30-0.50g; When the proportion of -200 mesh mineral particles in the mud sample is not less than 60% and less than 80%, the sampling amount is 0.20-0.30g; When the proportion of -200 mesh mineral particles in the mud sample is not less than 80% and less than 90%, the sampling amount is 0.15-0.20g; When the proportion of -200 mesh mineral particles in the mud sample is greater than or equal to 90%, the sampling amount shall not exceed 0.10-0.15g.
[0008] Optionally, the diluent includes benzyl alcohol; the curing agent includes 593 curing agent.
[0009] Optionally, the step of preparing the mixed liquid includes: first diluting the epoxy resin with the diluent at a volume ratio of 4:1-5:1, and then mixing the diluted epoxy resin with the curing agent at a volume ratio of 3:1-4:1 and stirring evenly.
[0010] Optionally, the mold includes a cylindrical plastic mold; the diameter of the cylindrical plastic mold is 28-32mm and the height is 8-15mm; the amount of mixed liquid poured into the bottom of the mold is 1-2.5ml.
[0011] Optionally, during the heating process, the first temperature is 50°C, and the heating time is 1 minute.
[0012] Optionally, in the heat curing process, the second temperature is 70°C, and the heat curing time is 30 minutes.
[0013] Optionally, the cooling includes: immersing the second sample in water for cooling, wherein the cooling temperature is 15°C.
[0014] Optionally, the post-processing includes fine grinding, finishing grinding, and polishing performed sequentially.
[0015] Optionally, the mud sample is dry and unconsolidated before the reduction process.
[0016] This application also provides a clay sample optical sheet, which is prepared by the rapid clay sample optical sheet preparation method.
[0017] Compared with the prior art, the beneficial effects of this application include: This application provides a rapid method for preparing polished sections of clay samples. Through the rapid and high-quality preparation of these sections, more representative samples can be obtained. Researchers can more accurately identify the mineral categories contained in the ore, determine the relative content of each mineral, and ascertain the percentage content of the target element in each individual mineral. This provides a solid data foundation for process mineralogy research and more efficiently and accurately guides related mineral processing procedures. The preparation method of this application can provide mining enterprises with high-quality polished sections of clay samples, helping them to more accurately understand ore properties, optimize mineral processing procedures, and improve resource utilization. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation on the scope of this application.
[0019] Figure 1 The image shows the characteristic reflected light image of the light slide micrograph of the mud-like sample obtained in Example 1; Figure 2 The reflected light image is a characteristic microscopic image of the mud-like sample prepared in Comparative Example 1. Figure 3 The reflected light image is a characteristic microscopic image of the mud-like sample prepared in Comparative Example 2. Figure 4 The reflected light image is a characteristic microscopic image of the mud-like sample prepared in Comparative Example 3. Figure 5 The image shows the characteristic reflected light image of the light slide micrograph of the mud-like sample prepared in Comparative Example 4. Detailed Implementation
[0020] As used in this article: "Prepared from" is synonymous with "comprising". The terms "comprising", "including", "having", "containing", or any other variations thereof as used herein are intended to cover non-exclusive inclusion. For example, a composition, step, method, article, or apparatus that includes the listed elements is not necessarily limited to those elements, but may include other elements not expressly listed or elements inherent to such composition, step, method, article, or apparatus.
[0021] The conjunction "composed of..." excludes any unspecified elements, steps, or components. If used in a claim, this phrase makes the claim closed, excluding materials other than those described, except for associated conventional impurities. When the phrase "composed of..." appears in a clause of the body of a claim rather than immediately following it, it limits only the elements described in that clause; other elements are not excluded from the claim as a whole.
[0022] When a quantity, concentration, or other value or parameter is expressed as a range, a preferred range, or a range defined by a series of upper and lower preferred values, this should be understood as specifically disclosing all ranges formed by any pair of any upper or preferred value with any lower or preferred value, regardless of whether the range is disclosed individually. For example, when the range “1–5” is disclosed, the described range should be interpreted as including ranges “1–4”, “1–3”, “1–2”, “1–2 and 4–5”, “1–3 and 5”, etc. When numerical ranges are described herein, unless otherwise stated, the range is intended to include its endpoints and all integers and fractions within that range.
[0023] In these embodiments, unless otherwise specified, the portions and percentages are all by weight.
[0024] "Parts by mass" refers to the basic unit of measurement that expresses the mass ratio of multiple components. One part can represent any unit mass, such as 1g or 2.689g. If we say that component A has "a" parts by mass and component B has "b" parts by mass, it means the ratio of the mass of component A to the mass of component B is a:b. Alternatively, it can mean that the mass of component A is aK and the mass of component B is bK (where K is any number representing a multiplier). It is important to understand that, unlike parts by mass, the sum of the mass parts of all components is not limited to 100 parts.
[0025] "And / or" is used to indicate that one or both of the described situations may occur, for example, A and / or B includes (A and B) and (A or B).
[0026] To better explain the technical solution provided in this application, the technical solution will be described in its entirety before proceeding with specific implementation methods.
[0027] In a first aspect, this application provides a rapid method for preparing a smooth sheet of mud-like sample, comprising: The collected muddy samples were reduced to obtain analytical samples, and the sampling amount was determined according to the sample fineness. Mix epoxy resin, diluent, and curing agent to prepare a mixed liquid; Pour a portion of the mixture into the bottom of the mold, add the analytical sample, stir, and add the remaining mixture until there are no obvious bubbles; A first sample is obtained by heating at a first temperature, holding at that temperature, and then stirring. The first sample is then heated and cured at a second temperature to obtain a second sample. After the heating and curing are completed, the sample block is immediately cooled. The completely solidified sample block was post-processed to produce a light film.
[0028] In one optional implementation, the reduction is performed using a conical quartering method; the weight of the sample is determined based on the mass percentage of -200 mesh mineral particles in the sample, and the higher the mass percentage of -200 mesh mineral particles in the sample, the less weight of the sample is taken.
[0029] In an optional implementation, the reduction satisfies the following relationship: When the proportion of -200 mesh mineral particles in the mud sample is less than 60%, the sampling amount is 0.30-0.50g; When the proportion of -200 mesh mineral particles in the mud sample is not less than 60% and less than 80%, the sampling amount is 0.20-0.30g; When the proportion of -200 mesh mineral particles in the mud sample is not less than 80% and less than 90%, the sampling amount is 0.15-0.20g; When the proportion of -200 mesh mineral particles in the mud sample is greater than or equal to 90%, the sampling amount shall not exceed 0.10-0.15g.
[0030] In one optional embodiment, the diluent comprises benzyl alcohol; the curing agent comprises 593 curing agent.
[0031] In an optional embodiment, the step of preparing the mixed liquid includes: first diluting the epoxy resin with the diluent at a volume ratio of 4:1-5:1, and then mixing the diluted epoxy resin with the curing agent at a volume ratio of 3:1-4:1 and stirring evenly.
[0032] In one optional embodiment, the mold comprises a cylindrical plastic mold; the cylindrical plastic mold has a diameter of 28-32 mm and a height of 8-15 mm; the amount of mixed liquid poured into the bottom of the mold is 1-2.5 ml.
[0033] In one optional embodiment, the heating process involves a first temperature of 50°C and a heating time of 1 minute.
[0034] In one optional embodiment, during the heat curing, the second temperature is 70°C, and the heat curing time is 30 minutes.
[0035] In one optional embodiment, the cooling includes immersing the second sample in water for cooling at a temperature of 15°C.
[0036] In one optional implementation, the post-processing includes fine grinding, finishing grinding, and polishing performed sequentially.
[0037] In an alternative implementation, the mud sample is dry and unconsolidated before the reduction is performed.
[0038] This application also provides a clay sample optical sheet, which is prepared by the rapid clay sample optical sheet preparation method.
[0039] Understandably, the preparation of smooth sheets for special samples has always been a challenging task in the field of materials research and analysis. Different types of special samples, due to their unique physical and chemical properties, impose varying requirements on the preparation methods. From a fundamental perspective, the core of the smooth sheet preparation method for mud-like samples lies in the precise understanding of sample characteristics and the meticulous control of the processing. It successfully achieves rapid and high-quality preparation by optimizing key steps such as sample pretreatment, precise sampling volume, refined proportions of various liquids, optimized smooth sheet solidification and molding methods, and surface treatment. This method will also provide new ideas for the preparation of smooth sheets for other specialized samples. Furthermore, the rapid cooling after high-temperature solidification utilizes the difference in thermal expansion coefficients between epoxy resin and mineral particles (the linear expansion coefficient of epoxy resin is approximately 50 × 10⁻⁶). -6 / ℃, gangue minerals are usually ≤10×10 -6 (℃), forming a micro-nano-scale physical separation at the interface between the two, improving the contrast of the mineral boundary under microscopic observation by more than 40%. This makes the mineral boundary more obvious under the microscope, and makes it easier to distinguish between epoxy resin adhesive and gangue minerals.
[0040] The implementation schemes of this application will be described in detail below with reference to specific embodiments. However, those skilled in the art will understand that the following embodiments are only for illustrating this application and should not be regarded as limiting the scope of this application. Unless otherwise specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall apply. Reagents or instruments used without specified manufacturers are all conventional products that can be purchased commercially.
[0041] Example 1 This embodiment provides a rapid method for preparing optical sheets of mud-like samples, the specific steps of which are as follows: This embodiment uses a dry, unconsolidated muddy tailings sample from a copper-sulfur mine in central my country as raw material to prepare a light slide for mineral liberation analysis.
[0042] Drying and reduction: First, ensure that the tailings sample to be tested is completely dry and free from caking or consolidation. Use the cone quartering method to reduce the original large sample size until a sufficient quantity of representative analytical material is obtained. Perform particle size analysis on the analytical material to determine the mass percentage of -200 mesh mineral particles. The determination shows that -200 mesh particles account for 60% of the tailings sample, and the sampling amount is determined to be 0.40 g. Accurately weigh 0.40 g of the analytical sample using a precision balance for later use.
[0043] Prepare a mixed liquid: Epoxy resin of type WSR618(E-51) (purchased from Nantong Xingchen Synthetic Materials Co., Ltd.), benzyl alcohol as a diluent, and 593 curing agent (purchased from Beijing Kunxiang Tailong Technology Co., Ltd.) as a curing agent were used. First, benzyl alcohol was added to the epoxy resin at a volume ratio of 5:1 and stirred to ensure thorough dilution. Then, this diluted epoxy resin liquid was taken and mixed with 593 curing agent at a volume ratio of 4:1. The mixture was stirred evenly with a glass rod in a beaker to obtain a clear mixed liquid.
[0044] Pouring and mixing: Select a cylindrical plastic mold with a diameter of 30 mm and a height of 12 mm. Use a pipette to draw 2 mL of the prepared mixture and pour it into the bottom of the mold, spreading it evenly. Slowly and evenly sprinkle 0.40 g of the weighed mud-like sample powder onto the mixture in the mold. Then, use a fine glass rod or probe to thoroughly and gently stir the mixture to allow the powder to initially wet and mix with the liquid, and to remove any entrained air. After stirring, slowly pour the remaining mixture along the mold wall until it completely covers the sample and fills the mold to near the top. Gently shake or tap the side of the mold until no obvious air bubbles escape from the surface.
[0045] Heat and cure: First stage heating (preheating): Place the filled mold in a constant temperature oven and heat at a first temperature of 50°C for 1 minute. After removing it, immediately stir briefly and quickly with a glass rod to further remove the tiny air bubbles generated by the heating and ensure that the sample is more evenly distributed in the resin. At this point, the first sample is obtained.
[0046] Second stage heating (curing): The stirred mold is placed back into the oven and heated to a second temperature of 70°C for 30 minutes for curing. This process allows the epoxy resin to fully crosslink and cure, resulting in the second sample.
[0047] Cooling: After curing, the second sample is taken out and quickly placed in a water bath at 15°C to cool and obtain a sample block.
[0048] Post-processing: The sample was subjected to fine grinding, fine grinding and polishing in sequence to obtain a mud-like sample sheet.
[0049] The characteristic reflected light images of the prepared mud-like samples are as follows: Figure 1 As shown.
[0050] Example 2 This embodiment provides a rapid method for preparing optical sheets of mud-like samples, the specific steps of which are as follows: This embodiment uses a dry, unconsolidated muddy tailings sample from a copper-sulfur mine in central my country as raw material to prepare a light slide for mineral liberation analysis.
[0051] Drying and reduction: First, ensure that the tailings sample to be tested is completely dry and free from caking or consolidation. Use the cone quartering method to reduce the original large sample size until a sufficient quantity of representative analytical material is obtained. Perform particle size analysis on the analytical material to determine the mass percentage of -200 mesh mineral particles. The determination shows that -200 mesh particles account for 60% of the tailings sample, and the sampling amount is determined to be 0.30 g. Accurately weigh 0.30 g of the analytical sample using a precision balance for later use.
[0052] Prepare a mixed liquid: Epoxy resin (model WSR618(E-51) purchased from Nantong Xingchen Synthetic Materials Co., Ltd.), benzyl alcohol as a diluent, and 593 curing agent as a curing agent were used. First, benzyl alcohol was added to the epoxy resin at a volume ratio of 5:1 and stirred until fully diluted. Then, this diluted epoxy resin liquid was taken and mixed with 593 curing agent at a volume ratio of 4:1. The mixture was stirred evenly with a glass rod in a beaker to obtain a clear mixed liquid.
[0053] Pouring and mixing: Select a cylindrical plastic mold with a diameter of 30 mm and a height of 12 mm. Use a pipette to draw 2 mL of the prepared mixture and pour it into the bottom of the mold, spreading it evenly. Slowly and evenly sprinkle 0.30 g of the weighed mud-like sample powder onto the mixture in the mold. Then, use a fine glass rod or probe to thoroughly and gently stir the mixture to allow the powder to initially wet and mix with the liquid, and to remove any entrained air. After stirring, slowly pour the remaining mixture along the mold wall until it completely covers the sample and fills the mold to near the top. Gently shake or tap the side of the mold until no obvious air bubbles escape from the surface.
[0054] Heat and cure: First stage heating (preheating): Place the filled mold in a constant temperature oven and heat at a first temperature of 50°C for 1 minute. After removing it, immediately stir briefly and quickly with a glass rod to further remove the tiny air bubbles generated by the heating and ensure that the sample is more evenly distributed in the resin. At this point, the first sample is obtained.
[0055] Second stage heating (curing): The stirred mold is placed back into the oven and heated to a second temperature of 70°C for 30 minutes for curing. This process allows the epoxy resin to fully crosslink and cure, resulting in the second sample.
[0056] Cooling: After curing, the second sample is taken out and quickly placed in a water bath at 15°C to cool and obtain a sample block.
[0057] Post-processing: The sample was subjected to fine grinding, fine grinding and polishing in sequence to obtain a mud-like sample sheet.
[0058] Example 3 This embodiment provides a rapid method for preparing optical sheets of mud-like samples, the specific steps of which are as follows: This embodiment uses a dry, unconsolidated muddy tailings sample from a copper-sulfur mine in central my country as raw material to prepare a light slide for mineral liberation analysis.
[0059] Drying and reduction: First, ensure that the tailings sample to be tested is completely dry and free from caking or consolidation. Use the cone quartering method to reduce the original large sample size until a sufficient quantity of representative analytical material is obtained. Perform particle size analysis on the analytical material to determine the mass percentage of -200 mesh mineral particles. The determination shows that -200 mesh particles account for 60% of the tailings sample, and the sampling amount is determined to be 0.50 g. Accurately weigh 0.50 g of the analytical sample using a precision balance for later use.
[0060] Prepare a mixed liquid: Epoxy resin (model WSR618(E-51) purchased from Nantong Xingchen Synthetic Materials Co., Ltd.), benzyl alcohol as a diluent, and 593 curing agent as a curing agent were used. First, benzyl alcohol was added to the epoxy resin at a volume ratio of 5:1 and stirred until fully diluted. Then, this diluted epoxy resin liquid was taken and mixed with 593 curing agent at a volume ratio of 4:1. The mixture was stirred evenly with a glass rod in a beaker to obtain a clear mixed liquid.
[0061] Pouring and mixing: Select a cylindrical plastic mold with a diameter of 30 mm and a height of 12 mm. Use a pipette to draw 2 mL of the prepared mixture and pour it into the bottom of the mold, spreading it evenly. Slowly and evenly sprinkle 0.50 g of the weighed mud-like sample powder onto the mixture in the mold. Then, use a fine glass rod or probe to thoroughly and gently stir the mixture to allow the powder to initially wet and mix with the liquid, and to remove any entrained air. After stirring, slowly pour the remaining mixture along the mold wall until it completely covers the sample and fills the mold to near the top. Gently shake or tap the side of the mold until no obvious air bubbles escape from the surface.
[0062] Heat and cure: First stage heating (preheating): Place the filled mold in a constant temperature oven and heat at a first temperature of 50°C for 1 minute. After removing it, immediately stir briefly and quickly with a glass rod to further remove the tiny air bubbles generated by the heating and ensure that the sample is more evenly distributed in the resin. At this point, the first sample is obtained.
[0063] Second stage heating (curing): The stirred mold is placed back into the oven and heated to a second temperature of 70°C for 30 minutes for curing. This process allows the epoxy resin to fully crosslink and cure, resulting in the second sample.
[0064] Cooling: After curing, the second sample is taken out and quickly placed in a water bath at 15°C to cool and obtain a sample block.
[0065] Post-processing: The sample was subjected to fine grinding, fine grinding and polishing in sequence to obtain a mud-like sample sheet.
[0066] Comparative Example 1 This comparative example provides a conventional method for preparing a smooth film of a mud-like sample, with the specific steps as follows: Place a traditional iron mold on a plastic sheet, and seal the mold perimeter with modeling clay. Add epoxy resin, thinner, and hardener sequentially to the mold, with 2-3 mL of hardener added to each mold. The amounts of epoxy resin and thinner are not specifically limited and can be adjusted based on the operator's experience. After adding the materials, stir thoroughly with a stirring rod. Then add the powder sample to be tested; the amount of powder sample added is not specifically limited and can be adjusted based on the operator's experience. Thoroughly mix the powder sample and epoxy resin mixture, and let it stand for 12-18 hours to allow it to cure naturally.
[0067] The characteristic reflected light images of the prepared mud-like samples are as follows: Figure 2 As shown.
[0068] Comparative Example 2 Compared with Example 1, this comparative example used a sample size of 1.0g. All other steps and parameters remained unchanged.
[0069] The characteristic reflected light images of the prepared mud-like samples are as follows: Figure 3 As shown.
[0070] Comparative Example 3 Compared with Example 1, this comparative example used a sample size of 0.2g. All other steps and parameters remained unchanged.
[0071] The characteristic reflected light images of the prepared mud-like samples are as follows: Figure 4 As shown.
[0072] Comparative Example 4 The only difference between this comparative example and Example 1 is that the first stage of heating is not used; instead, the second temperature of 70°C is used for heating and curing for 30 minutes.
[0073] The characteristic reflected light images of the prepared mud-like samples are as follows: Figure 5 As shown.
[0074] It is evident that traditional sample preparation methods result in agglomeration, bubbles, unclear mineral boundaries, and uneven polishing in the samples.
[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
[0076] Furthermore, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the foregoing claims, any of the claimed embodiments can be used in any combination. The information disclosed in this background section is intended only to enhance the understanding of the general background of this application and should not be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art.
Claims
1. A rapid method for preparing a smooth film of a mud-like sample, characterized in that, include: The collected muddy samples were reduced to obtain analytical samples, and the sampling amount was determined according to the sample fineness. Mix epoxy resin, diluent, and curing agent to prepare a mixed liquid; Pour a portion of the mixture into the bottom of the mold, add the analytical sample, stir, and add the remaining mixture until there are no obvious bubbles. A first sample is obtained by heating at a first temperature, holding at that temperature, and then stirring. The first sample is then heated and cured at a second temperature to obtain a second sample. After the heating and curing are completed, the sample block is immediately cooled. The completely solidified sample block was post-processed to produce a light film.
2. The rapid method for preparing a smooth sheet of mud-like sample according to claim 1, characterized in that, The reduction was performed using the conical quartering method; the weight of the sample was determined based on the mass percentage of -200 mesh mineral particles in the sample, and the higher the mass percentage of -200 mesh mineral particles in the sample, the less weight of the sample was taken.
3. The rapid method for preparing a smooth film of a mud-like sample according to claim 2, characterized in that, The reduction satisfies: When the proportion of -200 mesh mineral particles in the mud sample is less than 60%, the sampling amount is 0.30-0.50g; When the proportion of -200 mesh mineral particles in the mud sample is not less than 60% and less than 80%, the sampling amount is 0.20-0.30g; When the proportion of -200 mesh mineral particles in the mud sample is not less than 80% and less than 90%, the sampling amount is 0.15-0.20g; When the proportion of -200 mesh mineral particles in the mud sample is greater than or equal to 90%, the sampling amount shall not exceed 0.10-0.15g.
4. The rapid method for preparing a smooth film of a mud-like sample according to claim 1, characterized in that, The diluent includes benzyl alcohol; the curing agent includes 593 curing agent.
5. The rapid method for preparing a smooth film of a mud-like sample according to claim 1, characterized in that, The steps for preparing the mixed liquid include: first, diluting the epoxy resin with the diluent at a volume ratio of 4:1-5:1, and then mixing the diluted epoxy resin with the curing agent at a volume ratio of 3:1-4:1 and stirring evenly.
6. The rapid method for preparing a smooth sheet of mud-like sample according to claim 1, characterized in that, The mold includes a cylindrical plastic mold; the diameter of the cylindrical plastic mold is 28-32mm and the height is 8-15mm; the amount of mixed liquid poured into the bottom of the mold is 1-2.5ml.
7. The rapid method for preparing a smooth film of a mud-like sample according to claim 1, characterized in that, At least one of the following conditions must be met: a. During the heating process, the first temperature is 45-50℃, and the heating time is 1-5 minutes; b. In the heat curing process, the second temperature is 65-75℃, and the heat curing time is 25-40 minutes; c. The cooling includes: immersing the second sample in water for cooling, wherein the cooling temperature is 10-20°C.
8. The rapid method for preparing a smooth film of a mud-like sample according to claim 1, characterized in that, The post-processing includes fine grinding, precision grinding, and polishing performed sequentially.
9. The rapid method for preparing smooth slides of mud-like samples according to any one of claims 1-8, characterized in that, Before the reduction process, the mud sample is dry and unconsolidated.
10. A light slide of a mud-like sample, characterized in that, The optical sheet is prepared by any one of the rapid mud-based sample optical sheet preparation methods according to claims 1-9.