CN111646871A - High-performance hard emulsion explosive and preparation method thereof - Google Patents

High-performance hard emulsion explosive and preparation method thereof Download PDF

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Publication number
CN111646871A
CN111646871A CN202010575118.2A CN202010575118A CN111646871A CN 111646871 A CN111646871 A CN 111646871A CN 202010575118 A CN202010575118 A CN 202010575118A CN 111646871 A CN111646871 A CN 111646871A
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emulsifier
emulsion explosive
mass percent
composite
wax
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彭云昆
谢元丽
董绍煜
吴建进
李小强
胡涛
李丽坤
张然
王庆兰
夏安娜
吴继斌
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Yunnan Anhua Co ltd
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    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06BEXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B31/00Compositions containing an inorganic nitrogen-oxygen salt
    • C06B31/28Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate
    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06BEXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B21/00Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06BEXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B45/00Compositions or products which are defined by structure or arrangement of component of product
    • C06B45/18Compositions or products which are defined by structure or arrangement of component of product comprising a coated component
    • C06B45/30Compositions or products which are defined by structure or arrangement of component of product comprising a coated component the component base containing an inorganic explosive or an inorganic thermic component
    • C06B45/32Compositions or products which are defined by structure or arrangement of component of product comprising a coated component the component base containing an inorganic explosive or an inorganic thermic component the coating containing an organic compound

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Abstract

The invention discloses a high-performance hard emulsion explosive and a preparation method thereof, wherein the high-performance hard emulsion explosive comprises a composite polymer emulsifier, a composite wax, an aqueous phase solution and a sensitizer, and the composite wax comprises long-chain unsaturated aliphatic hydrocarbon, a polymer wax oil mixture and pressure-reduced cerate; the composite polymer emulsifier comprises a sorbitan monooleate emulsifier, a polyisobutylene succinimide emulsifier, an alcamines emulsifier and a polyol emulsification promoter; the sensitizer comprises sodium nitrite, citric acid and water; compared with the common emulsion explosive, the high-performance hard emulsion explosive disclosed by the invention has the advantages of more excellent detonation performance, less blasting unit consumption, better cartridge forming, contribution to blast hole filling and lower production cost, and is suitable for various emulsion explosive production processes and equipment.

Description

High-performance hard emulsion explosive and preparation method thereof
Technical Field
The invention belongs to the technical field of emulsion explosives, and particularly relates to a high-performance hard emulsion explosive and a preparation method thereof.
Background
The emulsion explosive is a water-containing explosive which takes a composite oil phase as a continuous phase and an inorganic salt water phase as a dispersed phase and is formed by sensitizing micro bubbles or micro-bubble-containing substances, the appearance of the water-containing explosive is a non-flowable paste, and the general packaging specification is cylindrical plastic film packaging; the package diameter is 25 mm-160 mm, the length is 200 mm-500 mm, the specific gravity of the medicated roll is 1.05g/cm3~1.18g/cm3(ii) a Because the emulsion explosive has excellent performance, stable and reliable product quality and safe use, the emulsion explosive is widely used for engineering blasting of mines, hydropower, traffic and the like and is the industrial explosive with the largest occupation amount in the current market; in the prior art, most emulsion explosives are produced by adopting a chemical rapid foaming sensitization process, and the water content is about 10%, so that the emulsion explosives are generally thin and soft in explosive type, poor in pressure resistance of explosive rolls, easy to deform and damage in the using process, further influencing the use and blast hole charging, and easily causing the phenomena of blasting effect influence such as explosive breakage in holes, pressure desensitization, incomplete explosion propagation, explosion rejection, half explosion and the like.
On the existing emulsion explosive production line, the emulsion explosive adopting chemical sensitization is influenced by the explosive type problem, so that the coating effect of the explosive body on the sensitization bubbles is weaker, the storage rate of the bubbles in the explosive body is reduced, and further, the explosive detonation performance, the storage period performance and other adverse effects are caused; in the production process, the cartridge is not well formed, and is not easy to identify or grab when being grabbed by a manipulator, and the cartridge is easy to damage and the like; the thin and soft explosive shape also causes the weakening of the supporting force of the explosive body to the whole explosive cartridge, and the explosive cartridge is easy to be pressed and deformed in the boxing process, so that the loading and blasting effects of the blast hole are influenced.
In similar hard emulsion explosive patents, the emulsion explosive is generally physically sensitized, namely perlite, glass microspheres and the like are used for sensitizing an emulsion matrix, and the sensitization cost is higher, so that the continuous production is not facilitated.
Disclosure of Invention
Aiming at the defects of the prior art, the inventor develops a novel special composite wax and a composite polymer emulsifier to improve the strength and the hardness of the explosive body of the emulsion explosive, and invents a high-performance hard emulsion explosive which can ensure that the cartridge of the emulsion explosive is better formed, has stronger compressive resistance, better detonation performance, lower cost, higher explosive loading efficiency and less single blasting consumption on the basis of ensuring that production equipment is not newly added and the original production process formula is not changed.
Specifically, the invention provides a high-performance hard emulsion explosive and a preparation method thereof.
The high-performance hard emulsion explosive comprises a composite polymer emulsifier, composite wax, an aqueous phase solution and a sensitizer,
the composite wax comprises 10-15% of long-chain unsaturated aliphatic hydrocarbon, 20-30% of high-molecular wax oil mixture and 55-70% of pressure-reducing cerate by mass percent;
the sensitizer comprises 60.0-70.0% of sodium nitrite, 5.0-10.0% of citric acid and 25.0-30.0% of water by mass percent.
Further, the carbon number of the long-chain unsaturated aliphatic hydrocarbon is 40-100, and the molecular weight is 500-1500.
Further, the dropping point of the polymer wax oil mixture is 60-70 ℃, and the kinematic viscosity at 100 ℃ is 15mm2/s~25mm2(s) the penetration degree of 1/10mm at 25 ℃ is 80-140 mm, and the oil content is 40.0-75.0%.
Furthermore, the dropping point of the decompression cerate is 60-70 ℃, and the kinematic viscosity at 100 ℃ is 5mm2/s~8mm2(s), the penetration degree of 1/10mm at 25 ℃ is 30 mm-70 mm, and the oil content is 5.0% -7.0%;
the dropping point of the special composite wax is 60-70 ℃, and the kinematic viscosity at 100 ℃ is 13mm2/s~16mm2The penetration degree of 1/10mm at 25 ℃ is 40 mm-100 mm, and the oil content is 30.0% -45.0%.
Further, the composite polymer emulsifier comprises 70-85% of sorbitan monooleate emulsifier, 10-15% of polyisobutylene succinimide emulsifier, 5-15% of alcamines emulsifier and 0-0.05% of polyol emulsification promoter by mass percent; wherein the content of monoester of the sorbitan monooleate emulsifier is more than 50 percent, and the content of diester is more than 20 percent; the molecular weight of the polyisobutylene succinimide emulsifier is more than 3000, and the kinematic viscosity at 100 ℃ is more than 300mm2S; the kinematic viscosity of the alcohol amine emulsifier at 100 ℃ is more than 220mm2S; the molecular weight of the polyol emulsification promoter is more than 200; the kinematic viscosity of the composite polymer emulsifier at 100 ℃ is 280mm2/s~305mm2/s。
Further, the aqueous phase solution comprises 78.5-82.5% by mass of ammonium nitrate, 7.5-9.5% by mass of sodium nitrate and 10.0-12.0% by mass of water.
The preparation method of the high-performance hard emulsion explosive comprises the steps of preparing a composite polymer emulsifier, preparing composite wax, preparing an aqueous phase solution and preparing a sensitizer;
wherein: preparing the composite wax, mixing 10-15% by mass of long-chain unsaturated aliphatic hydrocarbon, 20-30% by mass of a high-molecular wax-oil mixture and 55-70% by mass of reduced-pressure cerate, heating to melt, and keeping the temperature to 95 +/-5 ℃ for later use;
and emulsifying the prepared aqueous phase solution, the composite polymer emulsifier and the special composite wax to prepare an emulsion matrix, and mixing the sensitizer and the emulsion matrix to obtain the emulsion explosive.
Further, the preparation of the composite polymer emulsifier comprises the steps of mixing 70-85% by mass of sorbitan monooleate emulsifier, 10-15% by mass of polyisobutylene succinimide emulsifier, 5-15% by mass of alcohol amine emulsifier and 0-0.05% by mass of polyol emulsification promoter, heating for melting, and keeping the temperature to 95 +/-5 ℃ for later use;
preparing the aqueous phase solution, mixing 78.5-82.5% by mass of ammonium nitrate, 7.5-9.5% by mass of sodium nitrate and 10.0-12.0% by mass of water, heating to melt, and keeping the temperature to 95 +/-5 ℃ for later use;
the preparation of the sensitizer is to mix 60.0 to 70.0 mass percent of sodium nitrite, 5.0 to 10.0 mass percent of citric acid and 25.0 to 30.0 mass percent of water, and then heat and melt the mixture for later use.
Further, pouring the water phase solution with the mass percent of 92.0-94.5% into a corresponding water phase storage tank, pouring the composite wax solution with the mass percent of 5.0-6.0% and the composite polymer emulsifier with the mass percent of 1.5-2.0% into a corresponding oil phase storage tank, starting a coarse emulsifier and a matrix pump of a pharmaceutical process, starting a pharmaceutical switch, and emulsifying in emulsifying equipment to obtain the emulsified matrix.
Further, pouring the sensitizer with the mass percent of 0.01-0.02% into a corresponding storage tank, starting a flow switch of the sensitizer to sensitize the sensitizer with the prepared emulsion matrix with the mass percent of 99.8-99.9% to form a cartridge, conveying the sensitized emulsion explosive to a charging machine through a pipeline, packaging the cartridge into cartridges with corresponding sizes, cooling, and finally packaging the cartridges through an automatic packaging system to obtain the high-performance hard emulsion explosive.
The technical principle of the invention is as follows:
the high-performance hard emulsion explosive is an aqueous explosive which takes an oil phase as a continuous phase and a water phase as a dispersed phase, is emulsified into an emulsion matrix under the action of an emulsifier, and is sensitized by generating fine bubbles through chemical reaction of a sensitizing agent; the key that the water phase particles can play a supporting role is the water content, so the water content of the explosive needs to be limited; the effect of the oil phase particles can not be ignored, the long-chain unsaturated aliphatic hydrocarbon in the special composite wax can coat and fix emulsion explosive emulsion matrix particles, the supporting strength of the water phase particles is ensured, the emulsion explosive has stronger toughness and pressure resistance, a proper amount of polymer wax oil mixture can be filled in the middle of the emulsion matrix particles to serve as a buffer, the thickening of the oil film thickness is facilitated, the anti-shearing capability of the emulsion matrix is improved, and the colloid stability, the medicine body strength and the hardness of the emulsion explosive are improved; and the optimization of the proportion of the composite polymer emulsifier can better solve the problem that the mixture of the long-chain unsaturated aliphatic hydrocarbon and the polymer wax oil is not easy to emulsify when being used as the external phase of the emulsion explosive.
Compared with the prior art, the invention has the following beneficial effects:
the following properties of the emulsion explosive under the same process condition can be obviously improved:
1. the cartridge is formed better. For emulsion explosive produced by chemical sensitization, the cartridge is full, the appearance is mellow and smooth, and the use is convenient; for an emulsion explosive packaging system adopting a robot to recognize explosive charging, the recognition degree is improved, and the emulsion explosive packaging system is easy to grasp; the natural supporting function of the medicated roll is obvious during packaging, and the packaging box is not easy to deform and is beneficial to carrying.
2. The detonation performance is improved. The application of the composite wax and the composite polymer emulsifier effectively improves the oil-wax ratio of the external phase-composite oil phase of the emulsion explosive, obviously improves the content of carbon components in the explosive, improves the oxygen balance of the explosive, improves the explosive energy output of the explosive, and is beneficial to improving the detonation performance of the explosive.
3. The blast hole filling efficiency is improved. When the blast hole is filled, the well-formed explosive cartridge can be naturally charged by utilizing the gravity effect, and can be dredged by using the poker even if the explosive cartridge is clamped or damaged, and at the moment, the explosive cartridge can be uniformly stressed by the strong supporting effect of the explosive body; the filling effect on the inclined blast hole is better.
4. The unit consumption of blasting is reduced. Because the explosive type is hard, the explosive roll can be cut at will according to the length of the blast hole, the explosive body at the cut can not flow out, and the normal use is not influenced, so that the single-hole explosive loading can be reduced as much as possible; in addition, the performance of the explosive is improved by about 50 percent compared with the performance of the common explosive produced by the same equipment in the same process, so the unit consumption is lower.
5. Has wide application range. The invention adopts the form of the composite wax and the composite polymer emulsifier to optimize and improve the formula of the emulsion explosive, does not relate to process change, equipment replacement and the like, and therefore, the invention can be widely applied to various emulsion explosive production processes and equipment in China at present, such as high-temperature static sensitization, high-temperature dynamic sensitization, medium-low temperature sensitization and the like, and has good popularization and application values.
6. The production cost is reduced. The composite wax and the composite polymer emulsifier adopted by the invention have the comprehensive cost of about 6500-7500 yuan/ton calculated according to the current market price, and can save about 190 yuan per ton of explosive compared with 9500-10500 yuan/ton which adopts the integrated composite oil phase with the same proportion; compared with a physically sensitized hard emulsion explosive, the emulsion explosive can be saved by about 50-70 yuan per ton.
Drawings
FIG. 1 is an example of a flow chart of a process for producing an emulsion explosive.
Fig. 2 is a photograph of the special composite wax of the present invention.
And FIGS. 3 and 4 are graphs comparing the static pressure test results of a common emulsion explosive and the high-performance hard emulsion explosive provided by the invention when a 20kg weight is used when the explosive cartridge phi is 32 mm.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Example 1
Putting 115.5kg of ammonium nitrate, 11.25kg of sodium nitrate and 14.25kg of water into a batching tank, starting a heating device to melt the materials, controlling the temperature to be 95 +/-5 ℃ to prepare an aqueous phase solution, adjusting the pH value of the aqueous phase solution to be 4.0-5.5, the crystallization point of the aqueous phase solution to be 77.0-89.0 ℃, and the specific gravity of the aqueous phase solution to be 1.39g/cm3~1.45g/cm3(ii) a Mixing and melting 0.9kg of long-chain unsaturated aliphatic hydrocarbon, 1.85kg of high-molecular wax oil mixture and 4.65kg of reduced-pressure cerate, and controlling the temperature to be 95 +/-5 ℃ to obtain a composite wax solution; 1.36kg of sorbitan monooleate emulsifier, 0.25kg of polyisobutylene succinimide emulsifier, 0.2kg of alcohol amine emulsifier and 0.0kg of polyol emulsification promoter are mixed to prepare the composite polymer emulsifier. Mixing 7.4kg of composite wax and 1.81kg of composite polymer emulsifier to prepare a composite oil phase solution, keeping the temperature to 95 +/-5 ℃, pouring 141kg of qualified water phase solution and 9.22kg of qualified oil phase solution into corresponding storage tanks, starting a coarse emulsifier and a matrix pump of a pharmaceutical process, setting the water-oil phase ratio and yield process parameters, starting a pharmaceutical switch, and emulsifying to form an emulsified matrix; preparing a sensitizer in advance, and starting a sensitizer flow switch to sensitize the sensitizer qualified for inspection and the emulsifying matrix qualified for inspection to form a full and uniform medicated roll; the sensitized emulsion explosive is conveyed to a charging machine by a pipeline and packaged into cartridges with corresponding sizes, and the cartridges are cooled and finally packaged by an automatic packaging system to obtain finished products. The performance of the product was tested as follows:
Figure BDA0002550694890000081
example 2
1185kg of ammonium nitrate, 125kg of sodium nitrate and 150kg of water are put into a batching tank, and the batching tank is openedMelting the materials by a heating device, controlling the temperature at 95 +/-5 ℃ to prepare an aqueous phase solution, adjusting the pH value of the aqueous phase solution to 4.0-5.5, the crystallization point of the aqueous phase solution to 77.0-89.0 ℃, and the specific gravity of the aqueous phase solution to 1.39g/cm3~1.45g/cm3(ii) a Mixing 10.1kg long chain unsaturated aliphatic hydrocarbon, 18.8kg polymer wax oil mixture, and 47.9kg reduced pressure cerate, and melting at 95 + -5 deg.C to obtain composite wax solution; 6.4kg of sorbitan monooleate emulsifier, 1.0kg of polyisobutylene succinimide emulsifier, 1.0kg of alcohol amine emulsifier and 0.0kg of polyol emulsification promoter are mixed to prepare the composite polymer emulsifier. Mixing 76.8kg of composite wax and 8.4kg of composite polymer emulsifier to prepare a composite oil phase solution, keeping the temperature to 95 +/-5 ℃, pouring 1460kg of qualified water phase solution and 85.2kg of qualified oil phase solution into corresponding storage tanks, starting a coarse emulsifier and a matrix pump of a pharmaceutical process, setting the water-oil phase ratio and yield process parameters, starting a pharmaceutical switch, and emulsifying to form an emulsified matrix; preparing a sensitizer in advance, and starting a sensitizer flow switch to sensitize the sensitizer qualified for inspection and the emulsifying matrix qualified for inspection to form a full and uniform medicated roll; the sensitized emulsion explosive is conveyed to a charging machine by a pipeline and packaged into cartridges with corresponding sizes, and the cartridges are cooled and finally packaged by an automatic packaging system to obtain finished products. The product detection results are as follows:
Figure BDA0002550694890000091
example 3
3630kg of ammonium nitrate, 356kg of sodium nitrate and 490kg of water are put into a batching tank, a heating device is started to melt the materials, the temperature is controlled at 95 +/-5 ℃, an aqueous phase solution is prepared, the pH value of the aqueous phase solution is adjusted to be 4.0-5.5, the crystallization point of the aqueous phase solution is adjusted to be 77.0-89.0 ℃, and the specific gravity of the aqueous phase solution is 1.39g/cm3~1.45g/cm3(ii) a Mixing and melting 36.3kg of long-chain unsaturated aliphatic hydrocarbon, 66.0kg of high-molecular wax oil mixture and 146.9kg of reduced-pressure cerate, and controlling the temperature to be 95 +/-5 ℃ to obtain a composite wax solution; 51.4kg of sorbitan monooleate emulsifier and 9.0kg of polyisobutylene succinimide emulsifier6.0kg of alcohol amine emulsifier and 0.02kg of polyol emulsification promoter are mixed to prepare the composite polymer emulsifier. 249.2kg of compound wax and 66.42kg of compound polymer emulsifier are mixed to prepare a compound oil phase solution, the temperature is kept to 95 +/-5 ℃, 4476kg of qualified water phase solution and 315.62kg of qualified oil phase solution are poured into corresponding storage tanks, a coarse emulsifier and a matrix pump of a pharmaceutical process are started, the water-oil phase ratio and yield process parameters are set, a pharmaceutical switch is started, and emulsification is carried out to form an emulsification matrix; preparing a sensitizer in advance, and starting a sensitizer flow switch to sensitize the sensitizer qualified for inspection and the emulsifying matrix qualified for inspection to form a full and uniform medicated roll; the sensitized emulsion explosive is conveyed to a charging machine by a pipeline and packaged into cartridges with corresponding sizes, and the cartridges are cooled and finally packaged by an automatic packaging system to obtain finished products. The product detection results are as follows:
Figure BDA0002550694890000101
the applicant states that the detailed process flow of the present invention is illustrated by the above examples, and therefore, the scope of the present invention is not limited thereto, and any equivalent substitution of the raw material of the product of the present invention, or the addition of any auxiliary component, or the direct or indirect application to the related technical field, is included in the scope of the present invention.

Claims (10)

1. A high-performance hard emulsion explosive comprises a composite polymer emulsifier, composite wax, an aqueous phase solution and a sensitizer, and is characterized in that,
the composite wax comprises 10-15% of long-chain unsaturated aliphatic hydrocarbon, 20-30% of high-molecular wax oil mixture and 55-70% of pressure-reducing cerate by mass percent;
the sensitizer comprises 60.0-70.0% of sodium nitrite, 5.0-10.0% of citric acid and 25.0-30.0% of water by mass percent.
2. The high-performance hard emulsion explosive according to claim 1, wherein the long-chain unsaturated aliphatic hydrocarbon has a carbon number of 40 to 100 and a molecular weight of 500 to 1500.
3. The high-performance hard emulsion explosive according to claim 1, wherein the dropping point of the polymer wax oil mixture is 60 ℃ to 70 ℃, and the kinematic viscosity at 100 ℃ is 15mm2/s~25mm2(s) the penetration degree of 1/10mm at 25 ℃ is 80-140 mm, and the oil content is 40.0-75.0%.
4. The high-performance hard emulsion explosive according to claim 1, wherein the reduced pressure cerate has a dropping point of 60 ℃ to 70 ℃ and a kinematic viscosity of 5mm at 100 ℃2/s~8mm2(s), the penetration degree of 1/10mm at 25 ℃ is 30 mm-70 mm, and the oil content is 5.0% -7.0%;
the dropping point of the special composite wax is 60-70 ℃, and the kinematic viscosity at 100 ℃ is 13mm2/s~16mm2The penetration degree of 1/10mm at 25 ℃ is 40 mm-100 mm, and the oil content is 30.0% -45.0%.
5. The high-performance hard state emulsion explosive according to claim 1, wherein the composite polymer emulsifier comprises 70-85% by mass of sorbitan monooleate emulsifier, 10-15% by mass of polyisobutylene succinimide emulsifier, 5-15% by mass of alkanolamine emulsifier, and 0-0.05% by mass of polyol emulsion accelerator; wherein the content of monoester of the sorbitan monooleate emulsifier is more than 50 percent, and the content of diester is more than 20 percent; the molecular weight of the polyisobutylene succinimide emulsifier is more than 3000, and the kinematic viscosity at 100 ℃ is more than 300mm2S; the kinematic viscosity of the alcohol amine emulsifier at 100 ℃ is more than 220mm2S; the molecular weight of the polyol emulsification promoter is more than 200; the kinematic viscosity of the composite polymer emulsifier at 100 ℃ is 280mm2/s~305mm2/s。
6. The high-performance hard emulsion explosive according to claim 1, wherein the aqueous phase solution comprises 78.5 to 82.5 mass percent of ammonium nitrate, 7.5 to 9.5 mass percent of sodium nitrate and 10.0 to 12.0 mass percent of water.
7. A preparation method of the high-performance hard emulsion explosive according to any one of claims 1 to 6, which is characterized by comprising the steps of preparing a composite polymer emulsifier, preparing a composite wax, preparing an aqueous phase solution and preparing a sensitizer;
wherein: the preparation of the composite wax comprises the steps of mixing 10-15% by mass of long-chain unsaturated aliphatic hydrocarbon, 20-30% by mass of a high-molecular wax-oil mixture and 55-70% by mass of reduced-pressure cerate, heating to melt, and keeping the temperature to 95 +/-5 ℃;
and emulsifying the prepared aqueous phase solution, the composite polymer emulsifier and the special composite wax to prepare an emulsion matrix, and mixing the sensitizer and the emulsion matrix to obtain the emulsion explosive.
8. The method for preparing a high performance hard emulsion explosive according to claim 7,
the preparation of the composite polymer emulsifier comprises the steps of mixing 70-85% of sorbitan monooleate emulsifier, 10-15% of polyisobutylene succinimide emulsifier, 5-15% of alcohol amine emulsifier and 0-0.05% of polyol emulsification promoter by mass percent, heating for melting, and keeping the temperature to 95 +/-5 ℃;
the preparation of the aqueous phase solution comprises the steps of mixing 78.5-82.5 mass percent of ammonium nitrate, 7.5-9.5 mass percent of sodium nitrate and 10.0-12.0 mass percent of water, heating to melt, and keeping the temperature to 95 +/-5 ℃;
the preparation of the sensitizer is to mix 60.0 to 70.0 mass percent of sodium nitrite, 5.0 to 10.0 mass percent of citric acid and 25.0 to 30.0 mass percent of water and then heat and melt the mixture.
9. The preparation method of the high-performance hard emulsion explosive according to claim 8, wherein the aqueous phase solution with the mass percent of 92.0-94.5% and the temperature of 95 plus or minus 5 ℃ is poured into a corresponding aqueous phase storage tank, the composite wax solution with the mass percent of 5.0-6.0% and the composite polymer emulsifier with the mass percent of 1.5-2.0% and the temperature of 95 plus or minus 5 ℃ are poured into a corresponding oil phase storage tank, a crude emulsifier and a matrix pump in a pharmaceutical process are started, a pharmaceutical switch is started, and the emulsion matrix is prepared by emulsification in emulsification equipment.
10. The method for preparing the high-performance hard emulsion explosive according to claim 9, wherein the prepared sensitizer with the mass percent of 0.01-0.02% is poured into a corresponding storage tank, a flow switch of the sensitizer is opened to sensitize the sensitizer with the prepared emulsion matrix with the mass percent of 99.8-99.9% to form a cartridge, the sensitized emulsion explosive is conveyed to a charging machine through a pipeline and packaged into a cartridge with a corresponding size, the cartridge is cooled, and finally the cartridge is packaged through an automatic packaging system to prepare the high-performance hard emulsion explosive.
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CN112142542A (en) * 2020-09-22 2020-12-29 山东圣世达化工有限责任公司 Low-temperature-resistant emulsion explosive and preparation method thereof
CN112521234A (en) * 2020-12-17 2021-03-19 广东众和高新科技有限公司 Oil phase material and preparation method and application thereof

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