Tool for preparing coal rock sample by hot glue method
By using tools made of stainless steel, the heating area of coal samples and binders is increased, and the problems of uneven heating and low sample preparation efficiency in the prior art are solved, and a more efficient sample preparation and continuous preparation process is achieved.
Patent Information
- Application Number
- CN202421228809.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The existing method of preparing coal rock sample by thermal glue method is to make coal rock sample due to the low thermal conductivity coefficient and small contact area of the porcelain crucible, resulting in uneven heat treatment, low sample preparation efficiency and easy loss of samples, and the cleaning process affects the test environment.
The stainless steel material production tools are used to increase the heating area of coal samples and binders, improve the heating uniformity, and clean the tools during the sample forming process through the design of the tool to achieve continuous preparation of the sample.
Through the use of stainless steel tools, the heat is more uniform, the adhesive melting time is shortened, and the sample preparation time is significantly shortened, which improves the efficiency of the overall sample preparation process, and realizes continuous preparation of samples, reducing the impact of sample losses and cleaning process.
Smart Images
Figure CN222979195U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a tool for preparing coal rock sample slices by a hot glue method, belonging to the technical field of coal analysis equipment. Background Art
[0002] The central laboratory of the quality control department of Xing Steel is responsible for the quality inspection of incoming coal. Among them, the determination of the vitrinite reflectance of coal is to mix a coal sample with a specified particle size with a binder in proportion, heat and press it into a sample slice, then grind and polish it into a qualified polished slice, and measure it through a coal petrographic analysis system MSS-2000. The preparation of coal petrographic analysis samples is carried out with reference to GB / T 16773-2008 "Method for the Preparation of Coal Petrographic Analysis Samples". This standard mentions two preparation methods: the hot glue method and the cold glue method. Considering that the cold glue method requires a variety of chemical reagents such as cyclohexanone peroxide, dibutyl phthalate, styrene, and cobalt soap solution and needs to be cooled naturally to form, the sample preparation efficiency is low and the sample preparation cost is relatively high. Therefore, the hot glue method is selected for sample preparation. The current preparation method is to mix the coal sample and the binder evenly in a porcelain crucible, clamp the crucible with a crucible clamp and place it on a temperature-controlled closed universal electric furnace (not exceeding 100°C), and continuously stir until the binder is completely melted. Then, quickly put the mixture of the binder and the coal sample into an embedding machine to be pressed into shape. Due to the low thermal conductivity coefficient of the porcelain crucible, the heating efficiency is slow. At the same time, the contact area with the mixture is small, and the mixture is heated unevenly, and it is very easy to adhere to the crucible wall during continuous stirring, resulting in the loss of the sample. And the used crucible needs to be placed in a muffle furnace for burning to be cleaned, and a large amount of smoke will be generated during the burning process, affecting the testing environment. Summary of the Invention
[0003] The purpose of the utility model is to provide a tool for preparing coal rock sample slices by a hot glue method. By using stainless steel material to make the tool, the heating area of the coal sample and the binder is increased, the heating is more uniform, the heating effect is improved, the melting time of the binder is reduced, and the sample preparation time is significantly shortened. And the cleaning of the sample preparation tool can be completed within the time when the sample is put into the embedding machine to be formed, realizing the continuous preparation of samples and improving the efficiency of the overall sample preparation process, effectively solving the above problems existing in the background art.
[0004] The technical solution of the utility model is: a tool for preparing coal rock sample slices by a hot glue method, comprising tool A and tool B. Tool A comprises a tool A shovel surface and a tool A handle. The tool A shovel surface is made of stainless steel and is in a drawer shape as a whole. The tool A handle is a long handle structure and comprises a stainless steel part and a wooden part. The tool A shovel surface is welded to the stainless steel part of the tool A handle, and an included angle is provided at the connection. Tool B comprises a tool B shovel surface and a tool B handle. The tool B shovel surface is made of stainless steel and is in a rectangular shape without edges. The tool B handle is a short handle structure and comprises a stainless steel part and a wooden part. The tool B shovel surface is welded to the stainless steel part of the tool B handle.
[0005] The horizontal plane at the connection between the shovel surface of Tool A and the handle of Tool A forms an angle of 20°.
[0006] The shovel surface of Tool A is 80 mm long, 80 mm wide, and has a side height of 3 mm; the stainless-steel part of the handle of Tool A is 120 mm long, and the wooden part of the handle of Tool A is 80 mm long.
[0007] The shovel surface of Tool B is 90 mm long and 70 mm wide; the stainless-steel part of the handle of Tool B is 20 mm long, and the wooden part of the handle of Tool B is 80 mm long.
[0008] The beneficial effects of the present utility model are as follows: By using stainless steel material to make the tool, the heat absorption area of the coal sample and the binder is increased, the heat is more evenly distributed, the heat absorption effect is improved, the melting time of the binder is reduced, and the sample preparation time is significantly shortened; moreover, the cleaning of the sample preparation tool can be completed within the time when the sample is put into the sample mounting machine for forming, realizing the continuous preparation of samples and improving the efficiency of the overall sample preparation process. Description of the Drawings
[0009] Figure 1 It is the front view of Tool A of the present utility model;
[0010] Figure 2 It is the side view of Tool A of the present utility model;
[0011] Figure 3 It is the front view of Tool B of the present utility model;
[0012] Figure 4 It is the side view of Tool B of the present utility model;
[0013] Figure 5 It is the usage state diagram of the present utility model;
[0014] In the figure: electric heating plate 1, shovel surface of Tool A 2, handle of Tool A 3, flat round cake of coal sample and binder after mixing 4, shovel surface of Tool B 5, handle of Tool B 6. Detailed Implementation Manner
[0015] In order to make the purpose, technical solutions and advantages of the utility model implementation cases clearer, the technical solutions in the utility model implementation cases will be clearly and completely described below in conjunction with the drawings in the implementation cases. Obviously, the described implementation cases are only a small part of the implementation cases of the present utility model, rather than all of them. Based on the implementation cases in the present utility model, all other implementation cases obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.
[0016] A tool for preparing coal rock sample slices by the hot glue method, comprising tool A and tool B. Tool A includes tool A shovel surface 2 and tool A handle 3. Tool A shovel surface 2 is made of stainless steel and is in the shape of a drawer as a whole. Tool A handle 3 is a long handle structure, including a stainless steel part and a wooden part. Tool A shovel surface 2 is welded to the stainless steel part of tool A handle 3, and there is an included angle at the connection. Tool B includes tool B shovel surface 5 and tool B handle 6. Tool B shovel surface 5 is made of stainless steel and is in the shape of a rectangle without edges. Tool B handle 6 is a short handle structure, including a stainless steel part and a wooden part. Tool B shovel surface 5 is welded to the stainless steel part of tool B handle 6.
[0017] The horizontal plane at the connection between tool A shovel surface 2 and tool A handle 3 has an included angle of 20°.
[0018] Tool A shovel surface 2 is 80 mm long, 80 mm wide, and the edge height is 3 mm. The stainless steel part of tool A handle 3 is 120 mm long, and the wooden part of tool A handle 3 is 80 mm long.
[0019] Tool B shovel surface 5 is 90 mm long and 70 mm wide. The stainless steel part of tool B handle 6 is 20 mm long, and the wooden part of tool B handle 6 is 80 mm long.
[0020] In actual application, the mixed coal sample and binder after stirring are poured onto tool A, and tool B is used to flatten the mixture of coal sample and binder to 3 mm. After flattening, the coal sample and binder are in the shape of a cake. Tool A is placed on an electric hot plate with a temperature not higher than 100 °C for heating. After the binder is completely melted, tool B is used to gradually roll up the mixed sample from one side and quickly put it into the sample mounting machine for pressurizing for 30 s. During the process of sample slice pressurization and forming, tool A is placed on the electric hot plate, and tool B is used to clean the residual coal sample and binder on the surface of tool A. The cleaning process takes about 30 s. After cleaning is completed, the formed sample slice is taken out, numbered, and then ground and polished.
[0021] After the tool for preparing coal rock sample slices by the hot glue method is completed, after several months of use, the on-site sample preparation operation is simple and efficient. It is measured that the heat receiving area of the crucible is about 37.70 cm 2 , and the heat receiving area of the stainless steel tool is about 50.26 cm 2 . By querying the data, it can be known that the thermal conductivity of the stainless steel material is higher than that of the porcelain material (the thermal conductivity of stainless steel is 17 W / mK, and the thermal conductivity of porcelain is 1.99 W / mK).
[0022] Time cost: It takes about 10 min to heat and prepare a sample with a porcelain crucible, and the single crucible burning and cleaning time is about 5 min. The total sample preparation time is about 15 min. After changing to the tool, the tool cleaning can be completed during the sample forming process, and the preparation time for a single sample is about 3 min.
[0023] Using the utility model increases the heating area of the coal sample and the binder, making the heating more uniform, improving the heating effect, reducing the melting time of the binder, and significantly shortening the sample preparation time. Moreover, the cleaning of the sample preparation tool can be completed within the time when the sample is put into the sample embedding machine for molding, realizing the continuous preparation of samples and improving the efficiency of the overall sample preparation process.
Claims
1. A tool for preparing coal and rock samples by hot glue method, characterized in that: The invention comprises a tool A and a tool B, wherein the tool A comprises a tool A shovel surface (2) and a tool A handle (3), the tool A shovel surface (2) is made of stainless steel and is in a drawer shape as a whole, the tool A handle (3) is a long handle structure comprising a stainless steel part and a wooden part, the tool A shovel surface (2) is welded to the stainless steel part of the tool A handle (3), and an angle is provided at the connection; the tool B comprises a tool B shovel surface (5) and a tool B handle (6), the tool B shovel surface (5) is made of stainless steel and is in a rectangular shape without edges, the tool B handle (6) is a short handle structure comprising a stainless steel part and a wooden part, and the tool B shovel surface (5) is welded to the stainless steel part of the tool B handle (6).
2. A tool for preparing coal rock samples by hot glue method according to claim 1, characterized in that: The horizontal plane at the connection between the shovel surface (2) of tool A and the handle (3) of tool A forms an angle of 20°.
3. A tool for preparing coal rock samples by hot glue method according to claim 1, characterized in that: The shovel surface (2) of tool A is 80 mm long, 80 mm wide, and has a side height of 3 mm; the stainless steel portion of the handle (3) of tool A is 120 mm long, and the wooden portion of the handle (3) of tool A is 80 mm long.
4. A tool for preparing coal rock samples by hot glue method according to claim 1, characterized in that: The shovel surface (5) of tool B is 90 mm long and 70 mm wide; the stainless steel portion of the handle (6) of tool B is 20 mm long, and the wooden portion of the handle (6) of tool B is 80 mm long.