An emulsion explosive containing energetic tailings and a preparation method thereof

Abstract

The application discloses an energetic tailing-based emulsion explosive and a preparation method thereof, and comprises the following raw materials: an aqueous phase, an oil phase, a fluorine-containing polyether type interface regulator, a sodium nitrite aqueous solution and energetic tailings; the preparation method comprises the following steps: the aqueous phase and the oil phase are respectively prepared and heated; the fluorine-containing polyether type interface regulator is added into the aqueous phase and uniformly mixed; the aqueous phase is added into the oil phase under stirring to perform emulsification, so as to form a latex matrix; after the matrix is cooled, a sensitizer is added to perform chemical foaming; finally, the energetic tailings with a predetermined proportion are uniformly mixed, so that the energetic tailing-based emulsion explosive is obtained. The fluorine-containing polyether type interface regulator is introduced, a synergistic effect of the tailings and the emulsion system is realized through a molecular structure modification layer with a core-shell structure, 100% resource utilization of waste solid propellants can be realized, the product has a detonation velocity of 5126 m / s and a detonation heat of 3124.4 kJ / kg, the cost is reduced, the production safety specification is met, and the environmental, economic and social benefits are combined.

Description

Technical Field

[0001] This invention belongs to the field of resource recycling of waste solid propellants, and relates to a formulation and preparation method of an energetic tailings-based emulsion explosive. Background Technology

[0002] With the continuous upgrading of weaponry, a large number of strategic and tactical missiles and rockets have reached their maximum storage lifespan and entered their decommissioning period. The obsolete ammunition generated from these retired weapons and equipment has high flammability and explosiveness; large-scale storage and accumulation pose significant safety hazards and operational support challenges. Traditional methods of disposing of obsolete ammunition, such as deep burial, dumping in the high seas, open burning, and blasting, not only cause severe environmental pollution but also waste resources. Therefore, finding effective, safe, and environmentally friendly methods for disposing of obsolete ammunition is a major current need and technical challenge.

[0003] In the research on the disposal of waste solid propellants, in addition to traditional methods, various recycling technologies are being actively developed. These mainly include recycling technologies centered on high-value energetic materials and reuse technologies centered on product performance and functional transformation. Currently, the focus is on recycling high-value energetic materials. The energetic tailings remaining after the extraction of high-value materials are still destroyed by incineration, causing environmental pollution and resource waste. Therefore, if the energetic tailings could be converted into emulsion explosives, it would not only reduce the cost of emulsion explosives but also achieve energy reuse of the energetic tailings, turning waste into treasure, avoiding the environmental pollution caused by the incineration of energetic tailings, and generating significant social and economic benefits. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an energetic tailings-based emulsion explosive and its preparation method, which solves the three major technical bottlenecks in the existing process of preparing emulsion explosives from energetic tailings: (1) the interfacial tension of energetic tailings and emulsion oil phase is mismatched, resulting in poor product storage stability (easy stratification and water separation); (2) the heavy metal components remaining in the tailings catalyze the premature decomposition of the explosive, causing a decrease and instability in detonation performance (detonation heat and detonation velocity); (3) the traditional blending process requires independent pretreatment of the tailings, which increases the complexity of production and safety compliance risks; this invention can solve the above problems at the same time, and realize the efficient, stable and compliant resource utilization of energetic tailings.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An energetic tailings-based emulsion explosive comprises the following raw materials: an aqueous phase, an oil phase, a fluorinated polyether-type interface modifier, an aqueous sodium nitrite solution, and energetic tailings. The aqueous phase includes ammonium nitrate, sodium nitrate, and water; the oil phase includes diesel oil, petrolatum, and Span-80; and the fluorinated polyether-type interface modifier is composed of perfluorinated polyether alcohol and γ-aminopropyltriethoxysilane.

[0007] The present invention also includes the following technical features: Specifically, by mass percentage, it includes the following raw materials: 56-81% aqueous phase, 3.5-10% oil phase, 1.8-3% fluorinated polyether interface modifier, 0.1-1% sodium nitrite aqueous solution, and 13.6-30% energetic tailings.

[0008] Specifically, the aqueous phase comprises, by mass percentage, 60-74% ammonium nitrate, 17-25% sodium nitrate, and 9-15% water.

[0009] Specifically, the oil phase, by mass percentage, includes 25-40% white petrolatum, 23-40% No. 0 diesel oil, and 30-37% Span-80.

[0010] Specifically, the mass ratio of the perfluoropolyether alcohol to γ-aminopropyltriethoxysilane is 3~4:1.

[0011] Specifically, the concentration of sodium nitrite in the sodium nitrite aqueous solution is 20wt%~40wt%.

[0012] The preparation method of the energetic tailings-based emulsion explosive includes the following steps: Step 1: Weigh ammonium nitrate, sodium nitrate, and water into a tall beaker, heat to dissolve, and obtain the aqueous phase; Step 2: Weigh out No. 0 diesel oil, white petroleum jelly, and Span-80 and add them to a tall beaker. Heat to dissolve and obtain the oil phase. Step 3: Weigh perfluorinated polyether alcohol and γ-aminopropyltriethoxysilane, and stir them under nitrogen protection to form a fluorinated polyether type interface regulator. Step 4: Add a fluorinated polyether-type interface modifier to the aqueous phase and stir until homogeneous; Step 5: While stirring continuously, slowly add the aqueous phase to the oil phase to emulsify and form a latex matrix; Step 6: Cool the latex matrix, add sodium nitrite aqueous solution while stirring, and generate sensitized bubbles after full reaction; Step 7: Add energetic tailings and mix evenly to obtain an energetic tailings-based emulsion explosive sample.

[0013] Specifically, in step 1, the heating temperature is 95-105℃; in step 2, the heating temperature is 90-110℃.

[0014] Specifically, in step 3, the reaction is carried out at 60-80℃ under nitrogen protection and stirred at 300-600 rpm for 2-4 hours; In step 4, the stirring conditions are 200-300 rpm; In step 5, the continuous stirring conditions are 800-1800 rpm; the emulsification temperature is 90-110℃; and the emulsification time is 3-15 min.

[0015] Specifically, in step 6, the latex matrix is ​​cooled to 25-50°C.

[0016] Compared with the prior art, the present invention has the following technical effects: This invention exhibits excellent interfacial compatibility and storage stability: the fluorinated polyether-type interfacial modifier can form a "core-shell" structure modified layer on the surface of energetic tailings particles, significantly improving their affinity with the emulsion system. As shown in the examples, the tailings in the modified product are uniformly dispersed (particle size 5-10 μm), and the water separation rate is less than 0.5% after 15 days of storage.

[0017] This invention provides stable and improved detonation performance: the interface modifier effectively complexes heavy metal ions in tailings, inhibiting their catalytic decomposition of the explosive. The resulting explosive exhibits stable detonation performance superior to traditional formulations, with a heat of detonation exceeding 3124.4 kJ / kg and a detonation velocity exceeding 5100 m / s, exhibiting minimal fluctuations (e.g., the detonation velocity fluctuation in Example 1 is within ±2%).

[0018] This invention offers both production compliance and economic advantages: the technical solution allows the interface modifier to be directly added to the aqueous phase preparation process of existing emulsion explosive production lines, eliminating the need for complex independent pretreatment of energetic tailings, thus simplifying the process and complying with relevant safety production standards of the Ministry of Industry and Information Technology. Furthermore, the use of energetic tailings replaces some ammonium nitrate raw materials, significantly reducing production costs. Attached Figure Description

[0019] Figure 1 To prepare the macroscopic morphology of the samples, (a) is the latex matrix obtained after step 5 in Example 5, (b) is the emulsion explosive obtained after step 6 in Example 5, (c) is the energetic tailings used, and (d) is the energetic tailings-based emulsion explosive obtained after step 7 in Example 5.

[0020] Figure 2 To prepare the microstructure of the samples, (a) shows the microstructure of the latex matrix obtained after step 5 in Example 5, (b) shows the microstructure of the emulsion explosive obtained after step 6 in Example 5, (c) shows the microstructure of the energetic tailings-based emulsion explosive obtained after step 7 in Example 5, and (d) represents the imaging equipment. Detailed Implementation

[0021] This invention provides an energetic tailings-based emulsion explosive, the raw materials of which include an aqueous phase, an oil phase, a fluorinated polyether-type interface modifier, an aqueous solution of sodium nitrite, and energetic tailings; the aqueous phase includes ammonium nitrate, sodium nitrate, and water; the oil phase includes No. 0 diesel oil, white petrolatum, and the emulsifier Span-80; the fluorinated polyether-type interface modifier is a complex of perfluoropolyether alcohol and γ-aminopropyltriethoxysilane.

[0022] The present invention relates to an energetic tailings-based emulsion explosive, which, by mass percentage, comprises the following raw materials: 56-81% aqueous phase, 3.5-10% oil phase, 1.8-3% fluorinated polyether-type interface modifier, 0.1-1% sodium nitrite aqueous solution, and 13.6-30% energetic tailings.

[0023] The aqueous phase, by mass percentage, includes 60-74% ammonium nitrate, 17-25% sodium nitrate, and 9-15% water.

[0024] The oil phase, by mass percentage, includes 25-40% white petrolatum, 23-40% No. 0 diesel oil, and 30-37% Span-80.

[0025] The mass ratio of perfluoropolyether alcohol to γ-aminopropyltriethoxysilane is 3~4:1.

[0026] The concentration of sodium nitrite in the aqueous solution is 20wt%~40wt%.

[0027] The corresponding preparation methods mainly include: preparing and heating the aqueous phase and oil phase separately; adding a fluorinated polyether interface modifier to the aqueous phase and mixing it evenly; adding the aqueous phase to the oil phase under stirring for emulsification to form a latex matrix; adding a sensitizer (sodium nitrite aqueous solution) to the matrix after cooling for chemical foaming; and finally mixing it evenly with a predetermined proportion of energetic tailings to obtain an energetic tailings-based emulsion explosive.

[0028] More specifically, it includes the following steps: (1) According to the mass percentage of each raw material in the aqueous phase, take 60-74% ammonium nitrate, 17-25% sodium nitrate and 9-15% water and put them into a 250 mL tall beaker. Heat to 95-105℃ to dissolve, which is the aqueous phase; (2) According to the mass percentage of each raw material in the oil phase, take 25-40% white petrolatum, 23-40% No. 0 diesel oil, and 30-37% Span-80, put them into a 250 mL tall beaker, heat to 90-110℃ to dissolve and stir evenly, which is the oil phase; (3) Perfluoropolyether alcohol and γ-aminopropyltriethoxysilane are mixed at a mass ratio of 3-4:1 and stirred at 300-600 rpm for 2-4 hours under nitrogen protection at 60-80℃ to obtain a light yellow transparent liquid, which is the interface regulator. (4) Add 1.8-3% of fluorinated polyether interface modifier to the 56-81% aqueous solution and stir evenly at 200-300 rpm.

[0029] (5) At a stirring rate of 800-1800 rpm, the aqueous phase solution is added to the 3.5-10% oil phase solution, the emulsification temperature is 90-110℃, and the latex matrix can be obtained after stirring for 3-15 minutes.

[0030] (6) Cool the latex matrix to 25-50℃, add 0.1-1% of 20-40wt% sodium nitrite aqueous solution while stirring, and generate sensitized bubbles after thorough mixing and reaction.

[0031] (7) Mix 13.6-30% of the energetic tailings with the above emulsion explosive to obtain an energetic tailings-based emulsion explosive sample.

[0032] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0033] The energetic tailings in the following examples are waste residues left after extracting ammonium perchlorate (AP) and other main components from the residues after removing the propellant from the solid rocket motor. Its main components are binder (hydroxyl-terminated polybutadiene) 53.1%, RDX 4.2%, AP 12.9%, and aluminum powder (Al) 29.8%.

[0034] Example 1: This embodiment provides an energetic tailings-based emulsion explosive and its preparation method. The energetic tailings-based emulsion explosive of this embodiment includes the following raw materials by mass percentage: 56% aqueous phase, 10% oil phase, 3% fluorinated polyether interface modifier, 1% sodium nitrite aqueous solution and 30% energetic tailings. The preparation method of the energetic tailings-based emulsion explosive in this embodiment includes: (1) According to the mass percentage of each raw material in the aqueous phase, take 60% ammonium nitrate, 25% sodium nitrate and 15% water and put them into a 250 mL tall beaker. Heat to 95℃ to dissolve, which is the aqueous phase.

[0035] (2) According to the mass percentage of each raw material in the oil phase, take 25% white petrolatum, 40% No. 0 diesel oil, and 35% Span-80, put them into a 250 mL tall beaker, heat to 90℃ to dissolve and stir evenly, which is the oil phase.

[0036] (3) Perfluoropolyether alcohol and γ-aminopropyltriethoxysilane are mixed at a mass ratio of 3:1 and stirred at 300 rpm for 2 hours under nitrogen protection at 60°C to obtain a light yellow transparent liquid, which is the interface regulator.

[0037] (4) Add 3% of fluorinated polyether interface modifier to the 56% aqueous solution and stir evenly at 200 rpm.

[0038] (5) At a stirring speed of 800 rpm, the aqueous phase solution is added to the 10% oil phase solution, the emulsification temperature is 90℃, and the latex matrix can be obtained after stirring for 3 min.

[0039] (6) Cool the latex matrix to 25°C, add 1% of 20wt% sodium nitrite aqueous solution while stirring, and generate sensitized bubbles after thorough mixing and reaction.

[0040] (7) Mix 30% of the energetic tailings with the above emulsion explosive to obtain an energetic tailings-based emulsion explosive sample.

[0041] Example 2: This embodiment provides an energetic tailings-based emulsion explosive and its preparation method. The energetic tailings-based emulsion explosive of this embodiment includes the following raw materials by mass percentage: 81% aqueous phase, 3.5% oil phase, 1.8% fluorinated polyether-type interface modifier, 0.1% sodium nitrite aqueous solution and 13.6% energetic tailings. The preparation method of the energetic tailings-based emulsion explosive in this embodiment includes: (1) According to the mass percentage of each raw material in the aqueous phase, take 60% ammonium nitrate, 25% sodium nitrate and 15% water and put them into a 250 mL tall beaker. Heat to 105℃ to dissolve, which is the aqueous phase.

[0042] (2) The raw materials for the oil phase are: 25% white petrolatum, 40% No. 0 diesel oil, and 35% Span-80 by mass percentage. They are put into a 250 mL tall beaker, heated to 110℃ to dissolve and stirred evenly to form the oil phase.

[0043] (3) Perfluoropolyether alcohol and γ-aminopropyltriethoxysilane are mixed at a mass ratio of 3:1 and stirred at 600 rpm for 4 hours under nitrogen protection at 80°C to obtain a light yellow transparent liquid, which is the interface regulator.

[0044] (4) Add 1.8% of fluorinated polyether interface modifier to the 81% aqueous solution and stir evenly at 300 rpm.

[0045] (5) At a stirring rate of 1800 rpm, the aqueous phase solution is added to the 3.5% oil phase solution, the emulsification temperature is 110℃, and the latex matrix is ​​obtained after stirring for 15 min.

[0046] (6) Cool the latex matrix to 50°C, add 0.1% of 20wt% sodium nitrite aqueous solution while stirring, and generate sensitized bubbles after thorough mixing and reaction.

[0047] (7) Mix 13.6% of the energetic tailings with the above emulsion explosive to obtain an energetic tailings-based emulsion explosive sample.

[0048] Example 3: This embodiment provides an energetic tailings-based emulsion explosive and its preparation method. The energetic tailings-based emulsion explosive of this embodiment includes the following raw materials by mass percentage: 56% aqueous phase, 10% oil phase, 3% fluorinated polyether interface modifier, 1% sodium nitrite aqueous solution and 30% energetic tailings. The preparation method of the energetic tailings-based emulsion explosive in this embodiment includes: (1) The raw materials in the aqueous phase are, by mass percentage, 74% ammonium nitrate, 17% sodium nitrate and 9% water, and are placed in a 250 mL tall beaker and heated to 95 °C to dissolve, which is the aqueous phase.

[0049] (2) According to the mass percentage of each raw material in the oil phase, take 40% white petrolatum, 30% No. 0 diesel oil, and 30% Span-80, put them into a 250 mL tall beaker, heat to 90℃ to dissolve and stir evenly, which is the oil phase.

[0050] (3) Perfluoropolyether alcohol and γ-aminopropyltriethoxysilane are mixed at a mass ratio of 4:1 and stirred at 300 rpm for 2 hours under nitrogen protection at 60°C to obtain a light yellow transparent liquid, which is the interface regulator.

[0051] (4) Add 3% of fluorinated polyether interface modifier to the 56% aqueous solution and stir evenly at 200 rpm.

[0052] (5) At a stirring speed of 800 rpm, the aqueous phase solution is added to the 10% oil phase solution, the emulsification temperature is 90℃, and the latex matrix can be obtained after stirring for 3 min.

[0053] (6) Cool the latex matrix to 25°C, add 1% of 40wt% sodium nitrite aqueous solution while stirring, and generate sensitized bubbles after thorough mixing and reaction.

[0054] (7) Mix 30% of the energetic tailings with the above emulsion explosive to obtain an energetic tailings-based emulsion explosive sample.

[0055] Example 4: This embodiment provides an energetic tailings-based emulsion explosive and its preparation method. The energetic tailings-based emulsion explosive of this embodiment includes the following raw materials by mass percentage: 81% aqueous phase, 3.5% oil phase, 1.8% fluorinated polyether-type interface modifier, 0.1% sodium nitrite aqueous solution and 13.6% energetic tailings. The preparation method of the energetic tailings-based emulsion explosive in this embodiment includes: (1) The raw materials of the aqueous phase are, by mass percentage, 74% ammonium nitrate, 17% sodium nitrate and 9% water, and put into a 250 mL tall beaker. Heat to 105℃ to dissolve, which is the aqueous phase.

[0056] (2) According to the mass percentage of each raw material in the oil phase, take 40% white petrolatum, 30% No. 0 diesel oil, and 30% Span-80, put them into a 250 mL tall beaker, heat to 110℃ to dissolve and stir evenly, which is the oil phase.

[0057] (3) Perfluoropolyether alcohol and γ-aminopropyltriethoxysilane are mixed at a mass ratio of 4:1 and stirred at 600 rpm for 4 hours under nitrogen protection at 80°C to obtain a light yellow transparent liquid, which is the interface regulator.

[0058] (4) Add 1.8% of fluorinated polyether interface modifier to the 81% aqueous solution and stir evenly at 300 rpm.

[0059] (5) At a stirring rate of 1800 rpm, the aqueous phase solution is added to the 3.5% oil phase solution, the emulsification temperature is 110℃, and the latex matrix is ​​obtained after stirring for 15 min.

[0060] (6) Cool the latex matrix to 50°C, add 0.1% of 40wt% sodium nitrite aqueous solution while stirring, and generate sensitized bubbles after thorough mixing and reaction.

[0061] (7) Mix 13.6% of the energetic tailings with the above emulsion explosive to obtain an energetic tailings-based emulsion explosive sample.

[0062] Example 5: This embodiment provides an energetic tailings-based emulsion explosive and its preparation method. The energetic tailings-based emulsion explosive of this embodiment includes the following raw materials by mass percentage: 67% aqueous phase, 8% oil phase, 2.4% fluorinated polyether interface modifier, 0.6% sodium nitrite aqueous solution and 22% energetic tailings. The preparation method of the energetic tailings-based emulsion explosive in this embodiment includes: (1) The raw materials in the aqueous phase are, by mass percentage, 67% ammonium nitrate, 21% sodium nitrate, and 12% water, and are placed in a 250 mL tall beaker and heated to 100 °C to dissolve, which is the aqueous phase.

[0063] (2) The raw materials for the oil phase are: 40% white petrolatum, 23% No. 0 diesel oil, and 37% Span-80 by mass percentage. They are put into a 250 mL tall beaker, heated to 100℃ to dissolve and stirred evenly to obtain the oil phase.

[0064] (3) Perfluoropolyether alcohol and γ-aminopropyltriethoxysilane are mixed at a mass ratio of 7:2 and stirred at 450 rpm for 3 hours under nitrogen protection at 70°C to obtain a light yellow transparent liquid, which is the interface regulator.

[0065] (4) Add 2.4% of fluorinated polyether interface modifier to the 67% aqueous solution and stir evenly at 250 rpm.

[0066] (5) At a stirring speed of 1200 rpm, the aqueous phase solution is added to the 8% oil phase solution, the emulsification temperature is 100℃, and the latex matrix can be obtained after stirring for 9 min.

[0067] (6) Cool the latex matrix to 33°C, add 0.6% of 30wt% sodium nitrite aqueous solution while stirring, and generate sensitized bubbles after thorough mixing and reaction.

[0068] (7) Mix 22% of the energetic tailings with the above emulsion explosive to obtain an energetic tailings-based emulsion explosive sample.

[0069] Comparative Example 1: The difference between this comparative example and Example 5 is that steps (3) and (4) are omitted, while the rest of the process remains unchanged.

[0070] Performance evaluation: (1) Heat explosion: The heat explosion of the test case is tested according to the isothermal method 701.1 in GJB772A-97. The average value of 10 measurements is taken as the heat explosion of the sample.

[0071] (2) Detonation velocity: The detonation velocity of the test case was measured according to the electrical measurement method 702.1 in GJB772A-97. The average value of 10 measurement results was taken as the average detonation velocity of the sample.

[0072] (3) Explosion temperature: The explosion temperature of the test case is determined by referring to "Bai Yu. Temperature test and numerical simulation of explosion field of aluminum explosive [D]. Shanxi: North University of China, 2022.", and the average value of 10 measurement results is taken as the explosion temperature of the sample.

[0073] (4) Explosion capacity: The explosion capacity of the test case is determined according to the method 703.1 of GJB772A-97 for pressure test explosion capacity. The average value of 10 measurement results is taken as the explosion capacity of the sample.

[0074] Implementation Results: The performance test results of the embodiments and comparative examples of this invention are shown in the table below: Table 1 Test Results

[0075] Implementation effect analysis: This invention relates to a formulation and preparation method for energetic tailings-based emulsion explosives. By introducing a specific fluorinated polyether-type interface modifier and optimizing the proportions of each component and process parameters, it systematically solves the key technical bottlenecks in the resource utilization of energetic tailings. The technical effects of this invention are analyzed in detail below, in conjunction with performance test data from examples and comparative examples, and the product morphology shown in the accompanying drawings.

[0076] (1) Significantly improved interface compatibility and storage stability A fluorinated polyether-type interface modifier (a complex of perfluorinated polyether alcohol and γ-aminopropyltriethoxysilane) constructs a core-shell structure modification layer on the surface of energetic tailings particles, effectively reducing the interfacial tension between the tailings and the emulsified oil phase, and enhancing its dispersibility and affinity in the system.

[0077] like Figure 2 As shown in (c), in the energetic tailings-based emulsion explosive obtained in Example 5, the tailings particles (5-10 μm in diameter) are uniformly dispersed in the latex matrix without obvious agglomeration or sedimentation. After being stored at room temperature for 15 days, the product exhibits a water separation rate of less than 0.5%, which is significantly lower than that of Comparative Example 1 (water separation rate > 3%) without the use of an interface modifier, demonstrating its excellent physical stability and storage performance.

[0078] (2) The detonation performance is stable and superior to that of traditional formulations. Interface modifiers can effectively complex residual heavy metal ions in energetic tailings and inhibit their catalytic decomposition of oxidants (such as ammonium nitrate), thereby stabilizing and improving the detonation performance of explosives.

[0079] The heat output of Example 5 reached 3124.4 kJ / kg, which was significantly higher than that of Comparative Example 1 (2301.7 kJ / kg). Furthermore, all examples (2416.2~3124.4 kJ / kg) were superior to the comparative example, indicating that the present invention can effectively improve energy output.

[0080] Detonation velocity: The detonation velocity of Example 5 was 5126 m / s, which was the highest among all examples. All examples (4112~5126 m / s) were higher than the 4025 m / s of Comparative Example 1, which confirms that the formulation of the present invention can achieve a higher and more stable detonation propagation velocity.

[0081] Performance stability: The detonation velocity fluctuation range of Examples 1 to 5 was controlled within ±2%, indicating good process repeatability and stable and reliable product performance.

Claims

1. An energetic tailings-based emulsion explosive, characterized in that, The raw materials include: aqueous phase, oil phase, fluorinated polyether interface modifier, sodium nitrite aqueous solution and energetic tailings; The aqueous phase includes ammonium nitrate, sodium nitrate, and water; the oil phase includes diesel oil, petrolatum, and Span-80; and the fluorinated polyether-type interface modifier is composed of perfluorinated polyether alcohol and γ-aminopropyltriethoxysilane.

2. The energetic tailings-based emulsion explosive as described in claim 1, characterized in that, By mass percentage, it includes the following raw materials: 56-81% aqueous phase, 3.5-10% oil phase, 1.8-3% fluorinated polyether interface modifier, 0.1-1% sodium nitrite aqueous solution and 13.6-30% energetic tailings.

3. The energetic tailings-based emulsion explosive as described in claim 1, characterized in that, The aqueous phase comprises, by mass percentage, 60-74% ammonium nitrate, 17-25% sodium nitrate, and 9-15% water.

4. The energetic tailings-based emulsion explosive as described in claim 1, characterized in that, The oil phase comprises, by mass percentage, 25-40% white petrolatum, 23-40% No. 0 diesel oil, and 30-37% Span-80.

5. The energetic tailings-based emulsion explosive as described in claim 1, characterized in that, The mass ratio of the perfluoropolyether alcohol to γ-aminopropyltriethoxysilane is 3~4:

1.

6. The energetic tailings-based emulsion explosive as described in claim 1, characterized in that, The concentration of sodium nitrite in the sodium nitrite aqueous solution is 20wt%~40wt%.

7. The method for preparing the energetic tailings-based emulsion explosive according to any one of claims 2 to 6, characterized in that, Includes the following steps: Step 1: Weigh ammonium nitrate, sodium nitrate, and water into a tall beaker, heat to dissolve, and obtain the aqueous phase; Step 2: Weigh out No. 0 diesel oil, white petroleum jelly, and Span-80 and add them to a tall beaker. Heat to dissolve and obtain the oil phase. Step 3: Weigh perfluorinated polyether alcohol and γ-aminopropyltriethoxysilane, and stir the reaction under nitrogen protection to form a fluorinated polyether type interface regulator. Step 4: Add a fluorinated polyether-type interface modifier to the aqueous phase and stir until homogeneous; Step 5: While stirring continuously, slowly add the aqueous phase to the oil phase to emulsify and form a latex matrix; Step 6: Cool the latex matrix, add sodium nitrite aqueous solution while stirring, and generate sensitized bubbles after full reaction; Step 7: Add energetic tailings and mix evenly to obtain an energetic tailings-based emulsion explosive sample.

8. The method for preparing the energetic tailings-based emulsion explosive as described in claim 7, characterized in that, In step 1, the heating temperature is 95-105℃; in step 2, the heating temperature is 90-110℃.

9. The method for preparing the energetic tailings-based emulsion explosive as described in claim 7, characterized in that, In step 3, the reaction is carried out at 60-80℃ under nitrogen protection and stirred at 300-600 rpm for 2-4 hours. In step 4, the stirring conditions are 200-300 rpm; In step 5, the continuous stirring conditions are 800-1800 rpm; the emulsification temperature is 90-110℃; and the emulsification time is 3-15 min.

10. The method for preparing the energetic tailings-based emulsion explosive as described in claim 7, characterized in that, In step 6, the latex matrix is ​​cooled to 25-50℃.

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