Electrolyte corrosion resistant sample preparation method of anti-seepage castable and application thereof

Abstract

The application relates to the technical field of detection of refractories for metal smelting, in particular to a method for preparing an anti-permeation castable sample resistant to electrolyte corrosion and application thereof. The method comprises the following steps: mixing an anti-permeation castable, a binder and a solvent, then adopting a mold for forming, and performing air drying to obtain a sample; drying the sample, adding electrolyte on the surface of the sample, then performing heating and heat preservation to obtain an anti-permeation castable sample resistant to electrolyte corrosion; the molecular ratio of the electrolyte is 2.70-3.00; the application comprises using the anti-permeation castable sample prepared by the method for evaluating the anti-permeation performance of the anti-permeation castable; the typical anti-permeation castable sample resistant to electrolyte corrosion can be obtained through the above steps, and the anti-permeation castable sample is convenient for evaluating the electrolyte corrosion resistance of the anti-permeation castable in the later stage.

Description

Technical Field

[0001] This application relates to the field of refractory material testing technology for metal smelting, and in particular to a method for preparing anti-electrolyte erosion samples of anti-seepage castables and its application. Background Technology

[0002] As an important refractory material for preventing seepage and maintaining heat in aluminum electrolytic cells, the quality of anti-seepage castables, especially their anti-seepage performance, is particularly important for electrolytic aluminum enterprises. However, currently, design institutes, manufacturers, and users focus on their chemical composition, bulk density, flexural strength, compressive strength, heating line changes, and thermal conductivity, while paying insufficient attention to the anti-seepage performance of the products. The main reason is that there is currently no mature sample preparation method for anti-electrolyte corrosion of castables, and there is also a lack of evaluation methods for such castables.

[0003] How to provide a method for preparing samples of anti-electrolyte erosion castables and its application, so as to achieve simple sample preparation for evaluating the anti-electrolyte erosion of castables, is a technical problem that urgently needs to be solved. Summary of the Invention

[0004] This application provides a method for preparing samples of anti-electrolyte erosion castable and its application, in order to solve the problem that there is currently no mature sample preparation method for anti-electrolyte erosion castable in the prior art, and there is also a lack of evaluation methods for such castable.

[0005] In a first aspect, this application provides a method for preparing a sample of an anti-electrolyte erosion castable, the method comprising:

[0006] The impermeable castable, binder and solvent are mixed, then molded and dried to obtain a sample;

[0007] The sample was dried, and an electrolyte was added to the surface of the sample. Then, it was heated and kept at a certain temperature to obtain a sample of an anti-electrolyte erosion impermeable castable.

[0008] The molecular ratio of the electrolyte is 2.70 to 3.00.

[0009] Optionally, the mass ratio of the impermeable castable, the binder, and the solvent is 91–94:9–6:11.

[0010] Optionally, the mass of the impermeable castable is 1800g to 2000g.

[0011] Optionally, the drying temperature is 105℃~115℃, and the drying time is ≥2h.

[0012] Optionally, the molecular ratio of the electrolyte is 2.70 to 3.00.

[0013] Optionally, the final heating temperature is 945℃~955℃, and the heat preservation time is 72h~96h.

[0014] Optionally, the molding process includes molding by first vibrating the mold and then curing it, wherein the mold vibration time is 40s to 80s and the curing time is ≥24h.

[0015] Secondly, this application provides an application of a method for preparing anti-electrolyte erosion samples of impermeable castables, the application including using the impermeable castable samples obtained by the method described in the first aspect for evaluating the impermeability performance of the impermeable castables.

[0016] Optionally, the application includes the following steps:

[0017] The sample was cut along its diagonal direction, then dried and cooled to obtain the sample before the reaction.

[0018] The sample was cut along the diagonal of the impermeable castable, then dried and cooled to obtain the reacted sample.

[0019] The erosion depth of the electrolyte is calculated based on the difference between the erosion depth of the sample before the reaction and the erosion depth of the sample after the reaction.

[0020] The surface of the sample after the reaction is photographed, copied, and cut to obtain the area of ​​the permeation reaction region;

[0021] The depth of the erosion reaction and the area of ​​the reaction zone are statistically analyzed to evaluate the seepage prevention performance of the seepage prevention castable.

[0022] Optionally, the step of photographing the surface of the reacted sample and then proportionally copying and cutting it according to the size of the reacted sample to obtain the area of ​​the permeation reaction region includes the following steps:

[0023] The surface of the post-reaction sample is photographed, and then copied and cut to the same size as the post-reaction sample to obtain the weight of the permeation reaction area of ​​the post-reaction sample.

[0024] Measure the weight and area of ​​the copying material used for the proportional copying to obtain the weight-area ratio of the copying material.

[0025] The area of ​​the permeation reaction region is calculated based on the ratio of the weight of the permeation reaction region to the weight-area ratio of the photocopying material.

[0026] Optionally, the formula for calculating the area of ​​the reaction region is:

[0027]

[0028] In the formula,

[0029] A represents the area of ​​the osmotic reaction zone;

[0030] m1 is the weight of the osmotic reaction zone;

[0031] m2 is the weight-to-area ratio of the photocopying material.

[0032] The technical solutions provided in this application have the following advantages compared with the prior art:

[0033] This application provides a method for preparing an anti-electrolyte erosion sample of a seepage-proof castable. The method involves first combining the seepage-proof castable with a binder in a solvent, then molding it using a mold. This allows for the rapid formation of granular seepage-proof castable into a sample body. The sample is then dried, and its surface is eroded with an electrolyte. Following heating and heat preservation, the molecular ratio of the electrolyte is controlled to ensure sufficient erosion of the sample. These steps yield a typical anti-electrolyte erosion sample of the seepage-proof castable, facilitating subsequent evaluation of its anti-electrolyte erosion capability. Attached Figure Description

[0034] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 A schematic flowchart illustrating a method for preparing an anti-electrolyte erosion sample of an impermeable castable provided in this application embodiment;

[0037] Figure 2 A flowchart illustrating the method for evaluating the impermeability of impermeable castables provided in this application embodiment;

[0038] Figure 3 A detailed flowchart illustrating the method for evaluating the impermeability of impermeable castables provided in the embodiments of this application;

[0039] Figure 4 This is a schematic diagram of the structure of the molding die provided in the embodiments of this application;

[0040] Figure 5 A schematic diagram of the area of ​​the permeation reaction zone of the domestic No. 1 anti-seepage castable after electrolyte erosion reaction, provided in an embodiment of this application;

[0041] Figure 6 A schematic diagram of the area of ​​the permeation reaction zone of the foreign No. 2 anti-seepage castable after electrolyte erosion reaction, provided in an embodiment of this application;

[0042] Figure 7 This is a schematic diagram of the area of ​​the seepage reaction zone of the domestic No. 3 anti-seepage castable after electrolyte erosion reaction, provided in Example 3 of this application.

[0043] Figure 8 This is a schematic diagram of the area of ​​the seepage reaction zone after the electrolyte erosion reaction of the domestic No. 3 anti-seepage castable provided in Embodiment 4 of this application. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this application can be purchased from the market or prepared by existing methods.

[0046] like Figure 1 As shown in the embodiment of this application, a method for preparing a sample of an anti-electrolyte erosion castable is provided. The sample preparation method includes:

[0047] S1. Mix the impermeable castable, binder and solvent, then mold it with a mold and dry it to obtain a sample;

[0048] S2. Dry the sample, add electrolyte to the surface of the sample, and then heat and keep it warm to obtain a sample of anti-electrolyte erosion impermeable castable;

[0049] The molecular ratio of the electrolyte is 2.70 to 3.00.

[0050] In the embodiments of this application, controlling the specific molecular ratio of the electrolyte can indicate that there are enough molecules in the electrolyte to completely erode the surface of the impermeable castable, thereby obtaining a typical impermeable castable sample resistant to electrolyte erosion.

[0051] The molecular ratio can be 2.70, 2.75, 2.80, 2.85, 2.90, 2.95, or 3.00.

[0052] In some alternative embodiments, the mass ratio of the impermeable castable, the binder, and the solvent is 91–94:9–6:8–12.

[0053] In this embodiment of the application, by refining the specific mass ratio of the impermeable castable, binder and solvent, the impermeable castable can be rapidly molded, thereby facilitating the subsequent drying and electrolyte erosion processes, and thus enabling the preparation of typical impermeable castable samples resistant to electrolyte erosion.

[0054] The mass ratio can be 91:9:8, 92:8:8, 93:7:8, 94:6:8, 91:9:9, 92:8:9, 93:7:9, 94:6:9, 91:9:10, 92:8:10, 93:7:10, 94:6:10, 91:9:11, 92:8:11, 93:7:11, 94:6:11, 91:9:12, 92:8:12, 93:7:12, or 94:6:12.

[0055] It should be noted that the anti-seepage castable is a mixture made of grade III high alumina clinker as refractory aggregate, high alumina powder as refractory powder, ultrafine silica fume powder, dispersant and siliceous or feldspar anti-seepage agent.

[0056] For seepage-proof castable, you can choose domestic No. 1 seepage-proof castable (FHA-60 from a manufacturer in Jiaozuo), foreign No. 2 seepage-proof castable (FSL-50 from a manufacturer in Xi'an), or domestic No. 3 seepage-proof castable (HTF-1 from a manufacturer in Xinmi).

[0057] The binder can be CA-50 cement as the main binder, with trace amounts of admixtures such as sodium tripolyphosphate (0.1%) and sodium hexametaphosphate (0.08%). The role of the admixtures is mainly to improve the bonding ability and sample strength of the binder, as required.

[0058] The solvent can be tap water, deionized water, or ultrapure water.

[0059] In some alternative embodiments, the mass of the impermeable castable is 1800g to 2000g.

[0060] In this embodiment, controlling the specific quality of the anti-seepage castable can be coordinated with the mold used for molding and the volume of the molded sample can be controlled, saving the cost of sample preparation while highlighting the erosion effect of electrolyte corrosion, thereby obtaining a typical anti-electrolyte corrosion anti-seepage castable sample.

[0061] The mass of the impermeable castable can be 1800g, 1810g, 1820g, 1830g, 1840g, 1850g, 1860g, 1870g, 1880g, 1890g, 1900g, 1910g, 1920g, 1930g, 1940g, 1950g, 1960g, 1970g, 1980g, 1990g, or even 2000g.

[0062] In some optional embodiments, the drying temperature is 105℃~115℃, and the drying time is ≥2h.

[0063] In this embodiment of the application, by refining the specific temperature and time of drying, the solvent and binder in the sample can be fully removed by drying, thereby obtaining a dense sample, which facilitates the subsequent electrolyte erosion process, and thus enables the preparation of a typical anti-electrolyte erosion impermeable castable sample.

[0064] In some optional embodiments, the final heating temperature is 945°C to 955°C, and the holding time is 72h to 96h.

[0065] In this embodiment of the application, by refining the specific heating temperature and the specific holding time, the electrolyte can be used to completely erode the surface sample by heating, thereby obtaining a typical anti-electrolyte erosion impermeable castable sample.

[0066] The final heating temperature can be 945℃, 946℃, 947℃, 948℃, 949℃, 950℃, 951℃, 952℃, 953℃, 954℃, or 955℃.

[0067] The insulation time can be 72 hours, 76 hours, 80 hours, 84 hours, 88 hours, 92 hours, or 96 hours.

[0068] In some optional embodiments, the molding process includes molding by first vibrating the mold and then curing it, wherein the mold vibration time is 40s to 80s and the curing time is ≥24h.

[0069] In this embodiment of the application, the specific method of controlling the molding is to use mold vibration to promote the bonding of the anti-seepage castable and the binder, thereby enabling the anti-seepage castable to be molded quickly, while also allowing the unmolded anti-seepage castable to be screened out by vibration.

[0070] By controlling the specific curing time, the anti-seepage castable can be used to obtain a sample through the action of the binder.

[0071] The vibration time of the mold can be 40s, 45s, 50s, 55s, 60s, 65s, 70s, 75s, or 80s.

[0072] Based on a general inventive concept, embodiments of this application provide an application of a method for preparing anti-electrolyte erosion samples of impermeable castables, the application including using the impermeable castable samples obtained by the sample preparation method to evaluate the impermeability performance of the impermeable castables.

[0073] This application is based on the above sample preparation method. The specific steps of the sample preparation method can be referred to the above embodiments. Since this application adopts some or all of the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0074] like Figure 2 As shown, in some optional implementations, the application includes the steps of:

[0075] S1. Cut along the diagonal of the sample, then dry and cool to obtain the sample before reaction;

[0076] S2. Cut along the diagonal direction of the impermeable castable sample, then dry and cool to obtain the reacted sample;

[0077] S3. Calculate the erosion reaction depth of the electrolyte based on the difference between the erosion depth of the sample before the reaction and the erosion depth of the sample after the reaction;

[0078] S4. Take a picture of the surface of the sample after the reaction, and then copy and cut it to obtain the area of ​​the permeation reaction region;

[0079] S5. Calculate the depth of the erosion reaction and the area of ​​the reaction zone to evaluate the seepage prevention performance of the seepage prevention castable.

[0080] In this embodiment of the application, by refining the specific steps of the application, the diagonal cutting method can not only obtain a sample cross-section with a sufficiently large area, but also avoid the inaccuracy of sample sampling caused by horizontal or vertical cutting. Then, by calculating the difference in erosion depth between the pre-reaction and post-reaction samples after cutting, the erosion reaction depth of the electrolyte can be obtained intuitively. Finally, the area of ​​the permeation reaction zone is calculated by the image method, thereby achieving an accurate evaluation of the seepage prevention performance of the seepage prevention castable.

[0081] like Figure 3 As shown, in some optional embodiments, the step of photographing the surface of the reacted sample and then proportionally copying and cutting it to obtain the area of ​​the permeation reaction region includes the following steps:

[0082] S401. Take a picture of the surface of the sample after the reaction, and make a proportional copy and cut according to the size of the sample after the reaction to obtain the weight of the permeation reaction area of ​​the sample after the reaction.

[0083] S402. Measure the weight and area of ​​the copying material used for the proportional copying to obtain the weight-area ratio of the copying material;

[0084] S403. Calculate the area of ​​the permeation reaction region based on the weight-to-area ratio of the permeation reaction region to the copying material.

[0085] In this embodiment of the application, by taking a picture of the surface of the sample and then making a proportional copy according to the size of the sample, the area eroded by the electrolyte can be transferred to the copy material. By cutting, the accurate range of the permeation reaction area can be obtained. Finally, by measuring the weight and area of ​​the copy material, the weight of the copy material per unit area can be obtained. Therefore, the area of ​​the permeation reaction area can be deduced from the weight-to-area ratio.

[0086] It should be noted that, in the image processing of this method, the weight of toner used for copying can be omitted because laser printing is used.

[0087] In some optional embodiments, the formula for calculating the area of ​​the reaction region is:

[0088]

[0089] In the formula,

[0090] A represents the area of ​​the osmotic reaction zone;

[0091] m1 is the weight of the osmotic reaction zone;

[0092] m2 is the weight-to-area ratio of the photocopying material.

[0093] In this embodiment of the application, by refining the specific calculation formula for the area of ​​the reaction region, the area of ​​the permeation reaction region can be deduced from the weight-area ratio of the photocopying material (the weight of the photocopying material per unit area) and the weight-area ratio of the permeation reaction region.

[0094] The present application is further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the application. Experimental methods in the following embodiments that do not specify specific conditions are generally determined according to national standards. If there is no corresponding national standard, then general international standards, conventional conditions, or conditions recommended by the manufacturer are followed.

[0095] Example 1

[0096] like Figure 1 and Figure 2 As shown, samples of anti-electrolyte erosion impermeable castables are first prepared and then evaluated. The specific process is as follows:

[0097] (1) Weigh 1800g of domestic No. 1 anti-seepage castable, and mix it with binder and water in a mixer at a mass ratio of 94%:6%:11% for 3 minutes. Then, load it into the container as shown in the figure. Figure 4 The mold shown was placed on a vibration table and vibrated for 60 seconds. After oxidizing in a laboratory environment for 24 hours, it was demolded and placed in an oven at 105℃~115℃ for 2 hours. After cooling, it was stored in a desiccator for later use.

[0098] (2) Weigh 270g of electrolyte sample (molecular ratio 2.70) and place it in the sample. Use a vibrating table or tamping rod to compact the electrolyte. Then place it in a high-temperature furnace, cover it, and then heat it from room temperature to 950℃.

[0099] (3) After keeping the sample at 950℃ for 96 hours, cool it to room temperature and take it out. Cut the sample into two halves along the diagonal direction with a cutting machine, dry and cool it to room temperature for later use.

[0100] (4) The erosion reaction depth is calculated based on the difference between the erosion depth of the sample after the reaction and the original erosion depth of the sample before the reaction.

[0101] (5) The reaction area is calculated using the area of ​​the dark area after the proportional copy reaction. The specific steps are as follows: First, weigh a 10cm×10cm piece of copy paper of the same material as the copy paper to obtain the weight of the paper per square centimeter; ignoring the weight of the toner, the reaction area can be obtained by dividing the weight of the copy paper by the weight of the paper per square centimeter (see...). Figure 5 The calculation formula is as follows:

[0102]

[0103] In the formula,

[0104] A represents the area of ​​the osmotic reaction zone;

[0105] m1 is the weight of the osmotic reaction zone;

[0106] m2 is the weight-to-area ratio of the photocopying material.

[0107] Example 2

[0108] Compared to the sample preparation and evaluation methods provided in Example 1, the process provided in Example 2 is as follows:

[0109] (1) Weigh 1800g of foreign No. 2 anti-seepage castable, and mix it with binder and water in a mixer at a mass ratio of 92%:8%:10% for 3 minutes. Then, load it into the container as shown in the figure. Figure 4 The mold shown was placed on a vibration table and vibrated for 40 seconds. After oxidation in a laboratory environment for 24 hours, it was demolded and placed in an oven at 105℃~115℃ for 2 hours. After cooling, it was stored in a desiccator for later use.

[0110] (2) Weigh 250g of electrolyte sample (molecular ratio 2.70) and place it in the sample. Use a vibrating table or tamping rod to compact the electrolyte. Then place it in a high-temperature furnace, cover it, and then heat it from room temperature to 950℃.

[0111] (3) After keeping the sample at 950℃ for 72 hours, cool it to room temperature and take it out. Cut the sample into two halves along the diagonal direction with a cutting machine, dry and cool it to room temperature for later use.

[0112] (4) The erosion reaction depth is calculated based on the difference between the erosion depth of the sample after the reaction and the original erosion depth of the sample before the reaction.

[0113] (5) The reaction area is calculated using the area of ​​the dark area after the proportional copy reaction. The specific steps are as follows: First, weigh a 10cm×10cm piece of copy paper of the same material as the copy paper to obtain the weight of the paper per square centimeter; ignoring the weight of the toner, the reaction area can be obtained by dividing the weight of the copy paper by the weight of the paper per square centimeter (e.g., ...). Figure 6 (As shown).

[0114] Example 3

[0115] Compared to the sample preparation and evaluation methods provided in Example 1, the process provided in Example 3 is as follows:

[0116] (1) Weigh 2000g of domestic No. 3 anti-seepage castable, and mix it with binder and water in a mixer at a mass ratio of 91%:9%:12% for 3 minutes. Then, load it into the container as shown in the figure. Figure 4The mold shown was placed on a vibration table and vibrated for 80 seconds. After oxidation in a laboratory environment for 24 hours, the mold was placed in a curing chamber with a relative humidity of 95% and a temperature of 20°C for 48 hours. After demolding, it was placed in an oven at 105°C to 115°C for 2 hours. After cooling, it was stored in a desiccator for later use.

[0117] (2) Weigh 270g of electrolyte sample (molecular ratio 3.00) and place it in the sample. Use a vibrating table or tamping rod to compact the electrolyte. Then place it in a high-temperature furnace, cover it, and then heat it from room temperature to 950℃.

[0118] (3) After keeping the sample at 950℃ for 96 hours, cool it to room temperature and take it out. Cut the sample into two halves along the diagonal direction with a cutting machine, dry and cool it to room temperature for later use.

[0119] (4) The erosion reaction depth is calculated based on the difference between the erosion depth of the sample after the reaction and the original erosion depth of the sample before the reaction.

[0120] (5) The reaction area is calculated using the area of ​​the dark area after the proportional copy reaction. The specific steps are as follows: First, weigh a 10cm×10cm piece of copy paper of the same material as the copy paper to obtain the weight of the paper per square centimeter; ignoring the weight of the toner, the reaction area can be obtained by dividing the weight of the copy paper by the weight of the paper per square centimeter (e.g., ...). Figure 7 (As shown).

[0121] Example 4

[0122] Compared to the sample preparation and evaluation methods provided in Example 1, the process provided in Example 4 is as follows:

[0123] (1) Weigh 2000g of domestic No. 3 anti-seepage castable, and mix it with binder and water in a mixer at a mass ratio of 91%:9%:12% for 3 minutes. Then, load it into the container as shown in the figure. Figure 4 The mold shown was placed on a vibration table and vibrated for 60 seconds. After oxidation in a laboratory environment for 24 hours, the mold was placed in a curing chamber with a relative humidity of 95% and a temperature of 20°C for 48 hours. After demolding, it was placed in an oven at 105°C to 115°C for 2 hours. After cooling, it was stored in a desiccator for later use.

[0124] (2) Weigh 270g of electrolyte sample (molecular ratio 3.00) and place it in the sample. Use a vibrating table or tamping rod to compact the electrolyte. Then place it in a high-temperature furnace, cover it, and then heat it from room temperature to 950℃.

[0125] (3) After keeping the sample at 950℃ for 84 hours, cool it to room temperature and take it out. Cut the sample into two halves along the diagonal direction with a cutting machine, dry and cool it to room temperature for later use.

[0126] (4) The erosion reaction depth is calculated based on the difference between the erosion depth of the sample after the reaction and the original erosion depth of the sample before the reaction.

[0127] (5) The reaction area is calculated using the area of ​​the dark area after the proportional copy reaction. The specific steps are as follows: First, weigh a 10cm×10cm piece of copy paper of the same material as the copy paper to obtain the weight of the paper per square centimeter; ignoring the weight of the toner, the reaction area can be obtained by dividing the weight of the copy paper by the weight of the paper per square centimeter (e.g., ...). Figure 8 (As shown).

[0128] Relevant experimental and effect data:

[0129] The erosion reaction depth and infiltration reaction area calculated for Examples 1, 2 and 3 were statistically analyzed, and the results are shown in Table 1.

[0130] Table 1 shows the results of erosion depth and infiltration area in each embodiment.

[0131]

[0132] From Table 1, Figure 5 , Figure 6 and Figure 7 It is understood that the sample preparation and evaluation methods provided in this application embodiment can well reflect the anti-electrolyte erosion performance of the anti-seepage castable, which helps electrolytic aluminum enterprises to conduct performance evaluation of the anti-seepage castable more scientifically and rationally, rather than being limited to the existing chemical composition and conventional physical performance indicators.

[0133] Various embodiments of this application may exist in the form of a range; it should be understood that the description in the form of a range is merely for convenience and brevity and should not be construed as a hard limitation on the scope of this application; therefore, it should be considered that the range description has specifically disclosed all possible sub-ranges and single numerical values ​​within that range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and single numbers within the range, such as 1, 2, 3, 4, 5, and 6, regardless of the range. Furthermore, whenever a numerical range is referred to herein, it means including any referenced number (fraction or integer) within the referred range.

[0134] In this application, unless otherwise stated, directional terms such as "upper" and "lower" specifically refer to the orientation shown in the accompanying drawings. Furthermore, in the description of this application, the terms "comprising," "including," etc., mean "including but not limited to."

[0135] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any actual relationship or order between these entities or operations. In this document, "and / or" describes the association between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. A and B can be singular or plural. In this document, "at least one" means one or more, and "more than" means two or more. "At least one," "at least one of the following," or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, "at least one of a, b, or c," or "at least one of a, b, and c," can both represent: a, b, c, ab (i.e., a and b), ac, bc, or abc, where a, b, and c can be single or multiple.

[0136] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for preparing an anti-electrolyte erosion sample of an impermeable castable, characterized in that, The sample preparation method includes: The impermeable castable, binder and solvent are mixed, then molded and dried to obtain a sample; The sample was dried, and an electrolyte was added to the surface of the sample. Then, it was heated and kept at a certain temperature to obtain a sample of an anti-electrolyte erosion impermeable castable. The molecular ratio of the electrolyte is 2.70 to 3.00; The mass ratio of the impermeable castable, the binder, and the solvent is 91-94:9-6:8-12; The mass of the impermeable castable is 1800g to 2000g; The final temperature of the heating is 945℃~955℃, and the holding time is 72h~96h.

2. The sample preparation method according to claim 1, characterized in that, The drying temperature is 105℃~115℃, and the drying time is ≥2h.

3. The sample preparation method according to claim 1, characterized in that, The molding process includes molding by first vibrating the mold and then curing it. The vibration time of the mold is 40s to 80s, and the curing time is ≥24h.

4. The application of a method for preparing anti-electrolyte erosion samples of an impermeable castable, characterized in that, The application includes using the sample preparation method of any one of claims 1-3 to evaluate the seepage prevention performance of the seepage prevention castable.

5. The application according to claim 4, characterized in that, The application includes the following steps: The sample was cut along its diagonal direction, then dried and cooled to obtain the sample before the reaction. The sample was cut along the diagonal of the impermeable castable, then dried and cooled to obtain the reacted sample. The erosion depth of the electrolyte is calculated based on the difference between the erosion depth of the sample before the reaction and the erosion depth of the sample after the reaction. The surface of the sample after the reaction is photographed, copied, and cut to obtain the area of ​​the permeation reaction region; The depth of the erosion reaction and the area of ​​the reaction zone are statistically analyzed to evaluate the seepage prevention performance of the seepage prevention castable.

6. The application according to claim 5, characterized in that, The step of photographing the surface of the reacted sample and then proportionally copying and cutting it to obtain the area of ​​the permeation reaction region includes the following steps: The surface of the post-reaction sample is photographed, and then copied and cut to the same scale as the size of the post-reaction sample to obtain the weight of the permeation reaction area of ​​the post-reaction sample. Measure the weight and area of ​​the copying material used for the proportional copying to obtain the weight-area ratio of the copying material. The area of ​​the permeation reaction zone is calculated based on the ratio of the weight of the permeation reaction zone to the weight-area ratio of the photocopying material.

7. The application according to claim 6, characterized in that, The formula for calculating the area of ​​the reaction region is: ； In the formula, A represents the area of ​​the osmotic reaction zone; m1 is the weight of the osmotic reaction zone; m2 is the weight-to-area ratio of the photocopying material.

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