A radial mesh liquid oxygen solid mixture configuration and preparation method thereof

Abstract

A radial mesh liquid oxygen solid mixture configuration and a preparation method thereof, belonging to the technical field of liquid oxygen rock breaking operations. In order to effectively improve the safety and energy release efficiency of liquid oxygen blasting, the present invention includes selecting a solid filler; pre-treating the powdered filler, including drying and sieving, to obtain a pre-treated powdered filler; adding a certain mass of adhesive to the pre-treated powdered filler, and mixing evenly to obtain a mixed powdered filler; filling the mixed powdered filler evenly into a molding mold or punching the fibrous filler, and then using a press to press and mold, to obtain a pressed radial mesh liquid oxygen solid mixture configuration; drying and then surface treatment, to obtain the final radial mesh liquid oxygen solid mixture configuration. The liquid oxygen of the present invention can flow evenly in the mesh to avoid the situation where the local concentration is too high or too low.

Description

Technical Field

[0001] The invention belongs to the technical field of liquid oxygen rock breaking operations, and in particular relates to a radial mesh-type liquid oxygen solid mixture configuration and a preparation method thereof. Background Art

[0002] In traditional liquid oxygen blasting operations, liquid oxygen is usually mixed with explosives for blasting. Although this method has a certain energy density and blasting effect, it has problems such as uneven distribution of liquid oxygen, low blasting efficiency, and unstable energy release. In addition, due to the low temperature and high oxidizing properties of liquid oxygen, it is easy to cause local overheating and unstable combustion when it comes into contact with solid media, increasing the safety risk of blasting. The specific situation is that the distribution of liquid oxygen in the blasting hole is uneven, resulting in unstable and insufficient release of blasting energy. During the blasting process, due to the uneven contact between liquid oxygen and solid media, local high temperature is easily caused, resulting in accidental deflagration. Traditional filling media cannot provide sufficient structural support and accommodation space, resulting in the inability to effectively and stably control the absorption of liquid oxygen. The uncontrollability of each rock breaking process is high, which is greatly affected by weather, storage conditions, and construction technology, and has a high risk and uncertainty of use. Summary of the invention

[0003] The problem to be solved by the present invention is to effectively improve the safety and energy release efficiency of liquid oxygen explosion, and propose a radial mesh liquid oxygen solid mixture configuration and a preparation method thereof.

[0004] To achieve the above object, the present invention is implemented through the following technical solutions:

[0005] A method for preparing a radial mesh-type liquid oxygen solid mixture configuration comprises the following steps:

[0006] S1. Select solid fillers, including powdered fillers or fibrous fillers;

[0007] S2. Pre-treating the powdered filler selected in step S1, including drying and sieving, to obtain a pre-treated powdered filler, or the fibrous filler selected in step S1 proceeds to step S4;

[0008] S3. Adding a certain mass of a binder to the pretreated powdered filler obtained in step S2 and mixing them evenly to obtain a mixed powdered filler;

[0009] S4. The mixed powder filler obtained in step S3 is uniformly filled into a molding die or the fibrous filler obtained in step S1 is punched and then pressed by a press to obtain a radial mesh-shaped liquid oxygen solid mixture configuration;

[0010] S5. The radial mesh-shaped liquid oxygen solid mixture obtained in step S4 is dried;

[0011] S6. Surface treatment is performed on the dried radial mesh liquid oxygen solid mixture configuration obtained in step S5 to obtain a final radial mesh liquid oxygen solid mixture configuration.

[0012] Furthermore, in step S1, the powdered filler includes sawdust or coal ash, and the fibrous filler is paper fiber or cotton.

[0013] Furthermore, in step S2, the temperature of the drying chamber or oven is set to 60-80° C., the drying time is 0.5-4 h, and the particle size of the powdered filler after sieving is 10-4000 μm, which is adjusted according to the type of filler material.

[0014] Furthermore, in step S3, the amount of the binder added is 0.1-5% of the weight of the pretreated powdered filler, and the binder is one of polyvinyl alcohol, starch, polypropylene or nylon.

[0015] Furthermore, the molding mold in step S4 consists of two parts. The outer shell is a pressing mold, and the inner cylinder with a diameter of 10 mm is surrounded by radially penetrating thorns to form a mesh structure of a solid mixture configuration. The root diameter of the cylindrical thorns is 5-10 mm, the length is 2-5 cm, and the radial gradually becomes 1 mm; the spacing between the cylindrical thorns is 2-10 cm.

[0016] Furthermore, the diameter of the holes punched in step S4 is 5-10 mm, and the distance between the holes is 2-10 cm.

[0017] Furthermore, in step S4, the pressure of the press is 1-10 MPa, and the pressing time is controlled to be 5-15 minutes.

[0018] Furthermore, in step S5, the pressed radial mesh-shaped liquid oxygen solid mixture configuration is taken out from the mold, placed in a drying room or oven, and dried and cured at a temperature of 60-80° C. for 1-4 hours.

[0019] Furthermore, the surface treatment method of step S6 is to perform waterproofing and antistatic treatment. The waterproofing treatment uses a fluoride coating or a silane coating to form a hydrophobic film on the surface of the dried radial mesh liquid oxygen solid mixture configuration, and then carbon black is coated on the waterproof radial mesh liquid oxygen solid mixture configuration surface for antistatic treatment.

[0020] A method for preparing a radial mesh liquid oxygen solid mixture configuration prepares a radial mesh liquid oxygen solid mixture configuration, wherein the radial mesh liquid oxygen solid mixture configuration is provided with a plurality of radial conical holes.

[0021] Beneficial effects of the present invention:

[0022] The radial mesh liquid oxygen solid mixture configuration of the present invention is composed of a plurality of radial meshes, which are evenly distributed along the length direction of the filling medium to ensure the uniform distribution of liquid oxygen in the blasting hole. The wall thickness between the meshes can be freely shot according to the use requirements. This solution can also minimize the weight of the filling medium to increase the filling amount of liquid oxygen and increase the rock breaking power.

[0023] The radial mesh liquid oxygen solid mixture configuration of the present invention has good liquid oxygen conductivity and storage performance. Liquid oxygen can flow evenly in the mesh, avoiding the situation where the local concentration is too high or too low. The radial mesh design of the medium can provide a stable support structure during blasting, reducing the explosion fluctuation and safety risks caused by the uneven release of liquid oxygen during the blasting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the appearance structure of the radial mesh liquid oxygen solid mixture configuration of the present invention;

[0025] Figure 2 A schematic diagram of a method for using the radial mesh liquid oxygen solid mixture configuration of the present invention;

[0026] Figure 2 1 is an exhaust pipe, 2 is a liquid inlet pipe, 3 is a radial mesh-type liquid oxygen solid mixture configuration, 4 is an electric ignition head, 5 is a wire, 6 is a flexible tube membrane, and 7 is a mesh structure. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the specific embodiments described are only part of the embodiments of the present invention, rather than all of the specific embodiments. The components of the specific embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations, and the present invention can also have other embodiments.

[0028] Therefore, the following detailed description of the specific embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected specific embodiments of the present invention. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0029] In order to further understand the content, features and effects of the present invention, the following specific implementation methods are given as examples, and the attached Figure 1 -Attached Figure 2 The detailed instructions are as follows:

[0030] Embodiment 1:

[0031] A method for preparing a radial mesh-type liquid oxygen solid mixture configuration comprises the following steps:

[0032] S1. Select the solid filler as a powder filler;

[0033] Furthermore, in step S1, the powdered filler is sawdust;

[0034] S2. Pretreating the powdered filler, including drying and sieving, to obtain a pretreated powdered filler;

[0035] Furthermore, in step S2, the temperature of the drying chamber or oven is set to 60° C., the drying time is 1 h, and the particle size of the powdered filler after sieving is 200-4000 μm;

[0036] S3. Adding a certain mass of a binder to the pretreated powdered filler obtained in step S2 and mixing them evenly to obtain a mixed powdered filler;

[0037] Furthermore, in step S3, the amount of the binder added is 0.1% of the weight of the pretreated powdered filler, and the binder is polyvinyl alcohol;

[0038] S4. The mixed powdered filler obtained in step S3 is uniformly filled into a molding die, and then pressed by a pressing machine to obtain a pressed radial mesh-shaped liquid oxygen solid mixture configuration;

[0039] Furthermore, the molding mold in step S4 consists of two parts. The outer shell is a pressing mold, and the inner cylinder with a diameter of 10 mm is surrounded by radial thorns to form a mesh structure of a solid mixture configuration. The root diameter of the cylindrical thorns is 5 mm, the length is 2.5 cm, and the radial gradually tapers to 1 mm; the spacing between the cylindrical protrusions is 2 cm.

[0040] Furthermore, in step S4, the pressure of the press is 2 MPa, and the pressing time is controlled to be 10 minutes;

[0041] S5. The radial mesh-shaped liquid oxygen solid mixture obtained in step S4 is dried;

[0042] Furthermore, in step S5, the pressed radial mesh-shaped liquid oxygen solid mixture configuration is taken out from the mold, placed in a drying room or oven, and dried and cured at a temperature of 80° C. for 1 hour;

[0043] S6. The dried radial mesh liquid oxygen solid mixture configuration obtained in step S5 is subjected to surface treatment to obtain a final radial mesh liquid oxygen solid mixture configuration;

[0044] Furthermore, the surface treatment method in step S6 is to perform waterproofing and antistatic treatment, spray silane coating and apply carbon black.

[0045] A method for preparing a radial mesh liquid oxygen solid mixture configuration prepares a radial mesh liquid oxygen solid mixture configuration, wherein the radial mesh liquid oxygen solid mixture configuration is provided with a plurality of radial conical holes.

[0046] The radial mesh liquid oxygen solid mixture configuration described in this embodiment places the radial mesh filling medium in the blasting hole to ensure that its bottom is in close contact with the bottom of the hole. Liquid oxygen is injected into the filling medium through a liquid oxygen delivery device, and the liquid oxygen is evenly distributed throughout the blasting hole through the mesh structure. An electronic control system is used to set the micro-difference blasting time and sequence, and the detonation device of each blasting point is triggered in turn to achieve multi-point and uniform liquid oxygen blasting.

[0047] The radial mesh-type liquid oxygen solid mixture configuration described in this embodiment improves the uniformity of blasting: through the radial mesh structure, the liquid oxygen can be more evenly distributed in the blasting hole, ensuring that the energy release during the blasting process is more uniform. Reduce the risk of blasting: the material selection and structural design effectively prevent the friction between the liquid oxygen and the filling medium, reducing the probability of accidental deflagration and overheating. Enhance operational safety: the medium structure design provides a more stable support, making the filling and blasting process of liquid oxygen safer and more reliable, and reducing the risk of human operation errors.

[0048] Embodiment 2:

[0049] A method for preparing a radial mesh-type liquid oxygen solid mixture configuration comprises the following steps:

[0050] S1. Select the solid filler as a powder filler;

[0051] Further, in step S1, the powdered filler is carbon black;

[0052] S2. Pretreating the powdered filler, including drying and sieving, to obtain a pretreated powdered filler;

[0053] Furthermore, in step S2, the temperature of the drying chamber or oven is set to 50° C., the drying time is 2 h, and the particle size of the powdered filler after sieving is 300-400 μm;

[0054] S3. Adding a certain mass of a binder to the pretreated powdered filler obtained in step S2 and mixing them evenly to obtain a mixed powdered filler;

[0055] Furthermore, in step S3, the amount of the binder added is 5% of the weight of the pretreated powdered filler, and the binder is starch;

[0056] S4. The mixed powdered filler obtained in step S3 is uniformly filled into a molding die, and then pressed by a pressing machine to obtain a pressed radial mesh-shaped liquid oxygen solid mixture configuration;

[0057] Furthermore, the molding die in step S4 is composed of two parts, the outer shell is a pressing die, and the inner cylinder with a diameter of 10 mm is surrounded by radial thorns to form a mesh structure of the solid mixture configuration, the root diameter of the cylindrical thorn is 5 mm, the length is 3 cm, and the radial gradually tapers to 1 mm; the spacing between the cylindrical thorns is 5 cm;

[0058] Furthermore, in step S4, the pressure of the press is 3 MPa, and the pressing time is controlled to be 15 minutes;

[0059] S5. The radial mesh-shaped liquid oxygen solid mixture obtained in step S4 is dried;

[0060] Furthermore, in step S5, the pressed radial mesh-shaped liquid oxygen solid mixture configuration is taken out from the mold, placed in a drying room or oven, and dried and cured at a temperature of 50° C. for 1 hour;

[0061] S6. The dried radial mesh liquid oxygen solid mixture configuration obtained in step S5 is subjected to surface treatment to obtain a final radial mesh liquid oxygen solid mixture configuration;

[0062] Furthermore, the surface treatment method in step S6 is to perform waterproofing and apply a fluoride coating.

[0063] A method for preparing a radial mesh liquid oxygen solid mixture configuration prepares a radial mesh liquid oxygen solid mixture configuration, wherein the radial mesh liquid oxygen solid mixture configuration is provided with a plurality of radial cylindrical holes.

[0064] The radial mesh liquid oxygen solid mixture configuration described in this embodiment places the radial mesh filling medium in the blasting hole to ensure that its bottom is in close contact with the bottom of the hole. Liquid oxygen is injected into the filling medium through a liquid oxygen delivery device, and the liquid oxygen is evenly distributed throughout the blasting hole through the mesh structure. An electronic control system is used to set the micro-difference blasting time and sequence, and the detonation device of each blasting point is triggered in turn to achieve multi-point and uniform liquid oxygen blasting.

[0065] The radial mesh-type liquid oxygen solid mixture configuration described in this embodiment improves the uniformity of blasting: through the radial mesh structure, the liquid oxygen can be more evenly distributed in the blasting hole, ensuring that the energy release during the blasting process is more uniform. Reduce the risk of blasting: the material selection and structural design effectively prevent the friction between the liquid oxygen and the filling medium, reducing the probability of accidental deflagration and overheating. Enhance operational safety: the medium structure design provides a more stable support, making the filling and blasting process of liquid oxygen safer and more reliable, and reducing the risk of human operation errors.

[0066] Embodiment 3:

[0067] A method for preparing a radial mesh-type liquid oxygen solid mixture configuration comprises the following steps:

[0068] S1. The selected solid filler is a fibrous filler;

[0069] Furthermore, in step S1, the fibrous filler is cotton;

[0070] S2. After the fibrous filler obtained in step S1 is punched, a radial mesh-type liquid oxygen solid mixture configuration is obtained directly without pressing;

[0071] Furthermore, the diameter of the holes punched in step S2 is 5 mm, and the spacing between the holes is 2 cm;

[0072] S3. The radial mesh liquid oxygen solid mixture configuration obtained by the drying process in step S2 is subjected to surface treatment to obtain a final radial mesh liquid oxygen solid mixture configuration;

[0073] Furthermore, the surface treatment method in step S6 is to perform waterproofing and antistatic treatment, spray silane coating and apply carbon black.

[0074] A method for preparing a radial mesh liquid oxygen solid mixture configuration prepares a radial mesh liquid oxygen solid mixture configuration, wherein the radial mesh liquid oxygen solid mixture configuration is provided with a plurality of radial cylindrical holes.

[0075] The radial mesh liquid oxygen solid mixture configuration described in this embodiment places the radial mesh filling medium in the blasting hole to ensure that its bottom is in close contact with the bottom of the hole. Liquid oxygen is injected into the filling medium through a liquid oxygen delivery device, and the liquid oxygen is evenly distributed throughout the blasting hole through the mesh structure. An electronic control system is used to set the micro-difference blasting time and sequence, and the detonation device of each blasting point is triggered in turn to achieve multi-point and uniform liquid oxygen blasting.

[0076] The radial mesh-type liquid oxygen solid mixture configuration described in this embodiment improves the uniformity of blasting: through the radial mesh structure, the liquid oxygen can be more evenly distributed in the blasting hole, ensuring that the energy release during the blasting process is more uniform. Reduce the risk of blasting: the material selection and structural design effectively prevent the friction between the liquid oxygen and the filling medium, reducing the probability of accidental deflagration and overheating. Enhance operational safety: the medium structure design provides a more stable support, making the filling and blasting process of liquid oxygen safer and more reliable, and reducing the risk of human operation errors.

[0077] Embodiment 4:

[0078] A method for preparing a radial mesh-type liquid oxygen solid mixture configuration comprises the following steps:

[0079] S1. The selected solid mixture configuration is a fibrous filler;

[0080] Furthermore, the fibrous filler in step S1 is paper fiber;

[0081] S2. After the fibrous filler obtained in step S1 is punched, a radial mesh-type liquid oxygen solid mixture configuration is obtained directly without pressing;

[0082] Furthermore, the diameter of the holes punched in step S2 is 5 mm, and the spacing between the holes is 10 cm;

[0083] S3. The radial mesh liquid oxygen solid mixture configuration obtained by the drying process in step S2 is subjected to surface treatment to obtain a final radial mesh liquid oxygen solid mixture configuration;

[0084] Furthermore, the surface treatment method in step S6 is to perform waterproofing and antistatic treatment, spray silane coating and apply carbon black.

[0085] A method for preparing a radial mesh liquid oxygen solid mixture configuration prepares a radial mesh liquid oxygen solid mixture configuration, wherein the radial mesh liquid oxygen solid mixture configuration is provided with a plurality of radial cylindrical holes.

[0086] The radial mesh liquid oxygen solid mixture configuration described in this embodiment places the radial mesh filling medium in the blasting hole to ensure that its bottom is in close contact with the bottom of the hole. Liquid oxygen is injected into the filling medium through a liquid oxygen delivery device, and the liquid oxygen is evenly distributed throughout the blasting hole through the mesh structure. An electronic control system is used to set the micro-difference blasting time and sequence, and the detonation device of each blasting point is triggered in turn to achieve multi-point and uniform liquid oxygen blasting.

[0087] The radial mesh-type liquid oxygen solid mixture configuration described in this embodiment improves the uniformity of blasting: through the radial mesh structure, the liquid oxygen can be more evenly distributed in the blasting hole, ensuring that the energy release during the blasting process is more uniform. Reduce the risk of blasting: the material selection and structural design effectively prevent the friction between the liquid oxygen and the filling medium, reducing the probability of accidental deflagration and overheating. Enhance operational safety: the medium structure design provides a more stable support, making the filling and blasting process of liquid oxygen safer and more reliable, and reducing the risk of human operation errors.

[0088] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0089] Although the present application has been described above with reference to specific embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the various features in the specific embodiments disclosed in the present application may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A method for preparing a radial mesh-type liquid oxygen solid mixture configuration, characterized in that: The steps include: S1. Select the solid filler as a powder filler; In step S1, the powdered filler includes sawdust or coal ash; S2. Pre-treating the powdered filler selected in step S1, including drying and sieving, to obtain a pre-treated powdered filler; S3. Adding a certain mass of a binder to the pretreated powdered filler obtained in step S2 and mixing them evenly to obtain a mixed powdered filler; S4. The mixed powdered filler obtained in step S3 is uniformly filled into a molding die, and then pressed by a pressing machine to obtain a pressed radial mesh-shaped liquid oxygen solid mixture configuration; The molding die in step S4 consists of two parts. The outer shell is a pressing die. The inner cylinder with a diameter of 10 mm is surrounded by radially penetrating thorns to form a mesh structure of the solid mixture configuration. The root diameter of the cylindrical thorns is 5-10 mm, the length is 2-5 cm, and the radial gradually tapers to 1 mm; the spacing between the cylindrical thorns is 2-10 cm; In step S4, the pressure of the press is 1-10 MPa, and the pressing time is controlled to be 5-15 minutes; S5. The radial mesh-shaped liquid oxygen solid mixture obtained in step S4 is dried; S6. The dried radial mesh liquid oxygen solid mixture configuration obtained in step S5 is subjected to surface treatment to obtain a final radial mesh liquid oxygen solid mixture configuration; The surface treatment method of step S6 is to perform waterproofing and antistatic treatment. The waterproofing treatment uses a fluoride coating or a silane coating to form a hydrophobic film on the surface of the dried radial mesh liquid oxygen solid mixture configuration, and then carbon black is coated on the waterproof radial mesh liquid oxygen solid mixture configuration surface for antistatic treatment.

2. The method for preparing a radial mesh-type liquid oxygen solid mixture configuration according to claim 1, characterized in that: In step S2, the temperature of the drying chamber or oven is set to 60-80°C, the drying time is 0.5-4h, and the particle size of the powdered filler after sieving is 10-4000 microns, which is adjusted according to the type of filler material.

3. The method for preparing a radial mesh liquid oxygen solid mixture configuration according to claim 2, characterized in that: In step S3, the amount of the binder added is 0.1-5% of the weight of the pre-treated powdered filler, and the binder is one of polyvinyl alcohol, starch, polypropylene or nylon.

4. The method for preparing a radial mesh liquid oxygen solid mixture configuration according to claim 3, characterized in that: Step S5: The radial mesh liquid oxygen solid mixture configuration is taken out from the mold and placed in a drying room or oven for drying and curing at a temperature of 60-80° C. for 1-4 hours.

5. A radial mesh liquid oxygen solid mixture configuration prepared by the method for preparing a radial mesh liquid oxygen solid mixture configuration according to any one of claims 1 to 4, characterized in that: The radial mesh-type liquid oxygen solid mixture configuration is provided with a plurality of radial conical holes.

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