阅读说明：本技术 一种抗冻乳化***专用复合油相及其制备方法和应用 (Special composite oil phase for anti-freezing emulsion explosive and preparation method and application thereof ) 是由 谢斌 于 2019-10-31 设计创作，主要内容包括：本发明涉及工业炸药技术领域,具体涉及一种抗冻乳化炸药专用复合油相及其制备方法和应用。本发明提供的抗冻乳化炸药专用复合油相,包括以下重量份数的制备原料：轻脱蜡膏5～30份；减压蜡膏5～20份；石蜡0～30份；植物蜡1～20份；微晶软蜡10～30份；凡士林5～30份；复合乳化剂30～45份；抗冻剂5～20份；低温改进剂1～8份；所述复合乳化剂由聚异丁烯丁二酸醇胺乳化剂、Span-80和磷脂组成。本发明通过限制乳化剂品种,选择与适宜的油相材料合理匹配,能够增强乳化炸药油膜强度与韧性,特别是在高寒条件下能够使乳化炸药保持良好的弹塑性和流变性,改善乳化炸药的抗冻性能和贮存稳定性。(The invention relates to the technical field of industrial explosives, in particular to a special composite oil phase for an anti-freezing emulsion explosive and a preparation method and application thereof. The invention provides a special composite oil phase for an anti-freezing emulsion explosive, which comprises the following preparation raw materials in parts by weight: 5-30 parts of light dewaxing paste; 5-20 parts of pressure-reducing cerate; 0-30 parts of paraffin; 1-20 parts of vegetable wax; 10-30 parts of microcrystalline soft wax; 5-30 parts of vaseline; 30-45 parts of a composite emulsifier; 5-20 parts of an antifreeze agent; 1-8 parts of a low-temperature improver; the composite emulsifier is composed of polyisobutylene succinic acid alcohol amine emulsifier, Span-80 and phospholipid. According to the invention, by limiting the variety of the emulsifier and selecting the emulsifier to be reasonably matched with an appropriate oil phase material, the oil film strength and toughness of the emulsion explosive can be enhanced, particularly, the emulsion explosive can keep good elastoplasticity and rheological property under a high-cold condition, and the frost resistance and storage stability of the emulsion explosive are improved.)

1. The composite oil phase special for the anti-freezing emulsion explosive is characterized by comprising the following preparation raw materials in parts by weight:

the composite emulsifier is composed of polyisobutylene succinic acid alcohol amine emulsifier, Span-80 and phospholipid.

2. The composite oil phase according to claim 1, which comprises the following preparation raw materials in parts by weight:

3. the composite oil phase according to claim 2, which comprises the following preparation raw materials in parts by weight:

4. the composite oil phase according to any one of claims 1 to 3, wherein the mass ratio of the polyisobutylene succinic acid alcohol amine emulsifier, Span-80 and the phospholipid in the composite emulsifier is (17-19): (10.2-11.4): (6.8-7.6).

5. The composite oil phase of claim 4, wherein the polyisobutylene succinic alcohol amine emulsifier is prepared from polyisobutylene succinic anhydride and an alcohol amine compound through an esterification reaction.

6. The composite oil phase according to claim 5, wherein the polyisobutenyl succinic anhydride consists of polyisobutenyl succinic anhydride with the number average molecular weight of 500 and polyisobutenyl succinic anhydride with the number average molecular weight of 1000, and the mass ratio of the polyisobutenyl succinic anhydride with the number average molecular weight of 500 to the polyisobutenyl succinic anhydride with the number average molecular weight of 1000 is 1 (1-6);

the alcohol amine compound is diethanolamine and/or triethanolamine.

7. The composite oil phase according to any one of claims 1 to 3, wherein the light dewaxed paste is a light deasphalted oil and/or a light dewaxed oil;

the pressure-reducing cerate is one or more of a second-line-reducing cerate, a third-line-reducing cerate and a fourth-line-reducing cerate;

the paraffin is fully refined paraffin and/or semi-refined paraffin;

the vegetable wax is hydrogenated vegetable wax;

the antifreeze is one or more of naphthenic oil, transformer oil and refrigerator oil;

the low-temperature improver is one or more of poly alpha-olefin, polymethacrylate, fumaric acid higher ester and vinyl acetate copolymer.

8. The preparation method of the special composite oil phase for the anti-freeze emulsion explosive disclosed by any one of claims 1 to 7 is characterized by comprising the following steps of:

carrying out first mixing on the light dewaxing paste and the reduced pressure dewaxing paste to obtain a first mixture;

secondly mixing the first mixture, microcrystalline soft wax, vegetable wax, vaseline, paraffin, an antifreeze agent and a low-temperature improver to obtain a second mixture;

and thirdly mixing the second mixture and the composite emulsifier to obtain the special composite oil phase for the anti-freezing emulsion explosive.

9. The method of claim 8, wherein the first, second, and third mixing are independently at a temperature of 90-95 ℃.

10. The application of the special composite oil phase for the anti-freeze emulsion explosive disclosed in any one of claims 1 to 7 or the special composite oil phase for the anti-freeze emulsion explosive prepared by the preparation method disclosed in any one of claims 8 to 9 in preparation of the anti-freeze emulsion explosive.

Technical Field

The invention relates to the technical field of industrial explosives, in particular to a special composite oil phase for an anti-freezing emulsion explosive and a preparation method and application thereof.

Background

Since the 60 s in the 20 th century, emulsion explosives have been paid much attention to their advantages of excellent explosive performance, excellent water resistance, simple production process, safety, environmental protection and the like, and are widely used in engineering blasting, and become the leading products in the field of global industrial explosives. Since the 21 st century, the development of the emulsion explosive in China is rapid, and the output of the emulsion explosive accounts for more than 60% of the specific gravity of the industrial explosive in 2017.

The emulsion explosive uses supersaturated nitrate water solution as dispersed phase, and under the action of shearing it is uniformly dispersed in the continuous phase of combustible agent (composite oil phase) by means of emulsification action of emulsifier, and adopts chemical or physical sensitization technology (at present, mainly uses chemical sensitization) to make the sensitized air bubbles be uniformly dispersed in the emulsion matrix so as to form a water-in-oil emulsion system in metastable state, and said emulsion system is a highly unstable system in thermodynamics, and is easy to crystallize and demulsify, so that it is a fatal defect.

The emulsion explosive can be normally used when the environmental temperature is higher than minus 15 ℃, but the temperature is often lower than minus 30 ℃ in winter in high-latitude and high-cold areas in north China, and the phenomenon that the explosion performance of the emulsion explosive is seriously attenuated and even fails to explode often occurs in the explosion process. The root of the emulsion explosive is that the emulsion explosive is hardened, sensitized bubbles escape, and devitrification demulsification is performed under the extremely cold condition. Therefore, the key point for improving the frost resistance of the emulsion explosive is to effectively improve the stability of the emulsion matrix. Although the proportion of the emulsifier and the oil phase material in the explosive is small, the emulsifier and the oil phase material are key components and play a decisive role in the stability of the emulsion explosive. The variety and performance of the emulsifier and the reasonable matching of the emulsifier and the oil phase material are key factors for obtaining the optimal emulsification state and fundamentally solving the stability of the emulsion explosive. In order to adapt to the use in the severe cold environment, the antifreezing property of the emulsion explosive is improved by improving the oil phase material and the emulsifier, so that the explosive keeps good elastoplasticity and rheological property under the severe cold condition, and the explosive has good explosion performance, and has very important practical significance.

Disclosure of Invention

The invention aims to provide a special composite oil phase for an anti-freezing emulsion explosive, and a preparation method and application thereof. The composite oil phase special for the anti-freezing emulsion explosive provided by the invention has good emulsibility, can form a compact and flexible 'wedge-shaped composite interface film', has a strong wrapping effect on an aqueous phase solution, is fine and uniform in latex particles, has a strong inhibition effect on the salt crystallization of an oxidant, can prevent sensitized bubbles of the emulsion explosive from escaping and the explosive from hardening under a low-temperature extremely cold condition, and has good explosion performance, excellent anti-freezing performance and long storage stability.

In order to achieve the above object, the present invention provides the following technical solutions:

the invention provides a special composite oil phase for an anti-freezing emulsion explosive, which comprises the following preparation raw materials in parts by weight:

the composite emulsifier is composed of polyisobutylene succinic acid alcohol amine emulsifier, Span-80 and phospholipid.

Preferably, the composite oil phase comprises the following preparation raw materials in parts by weight:

preferably, the composite oil phase comprises the following preparation raw materials in parts by weight:

preferably, the mass ratio of the polyisobutylene succinic acid alcohol amine emulsifier to the Span-80 to the phospholipid in the composite emulsifier is (17-19): (10.2-11.4): (6.8-7.6).

Preferably, the polyisobutylene succinic acid alcohol amine emulsifier is prepared from polyisobutylene succinic anhydride and an alcohol amine compound.

Preferably, the polyisobutenyl succinic anhydride consists of polyisobutenyl succinic anhydride with the number average molecular weight of 500 and polyisobutenyl succinic anhydride with the number average molecular weight of 1000, and the mass ratio of the polyisobutenyl succinic anhydride with the number average molecular weight of 500 to the polyisobutenyl succinic anhydride with the number average molecular weight of 1000 is 1: (1-6);

the alcohol amine compound is diethanolamine and/or triethanolamine.

Preferably, the light dewaxing paste is light deasphalted oil and/or light dewaxed oil;

the pressure-reducing cerate is one or more of a second-line-reducing cerate, a third-line-reducing cerate and a fourth-line-reducing cerate;

the paraffin is fully refined paraffin and/or semi-refined paraffin;

the vegetable wax is hydrogenated vegetable wax;

the antifreeze is one or more of naphthenic oil, transformer oil and refrigerator oil;

the low-temperature improver is one or more of poly alpha-olefin, polymethacrylate, fumaric acid higher ester and vinyl acetate copolymer.

The invention provides a preparation method of the special composite oil phase for the anti-freezing emulsion explosive, which comprises the following steps:

carrying out first mixing on the light dewaxing paste and the reduced pressure dewaxing paste to obtain a first mixture;

secondly mixing the first mixture, microcrystalline soft wax, vegetable wax, vaseline, paraffin, an antifreeze agent and a low-temperature improver to obtain a second mixture;

and thirdly mixing the second mixture and the composite emulsifier to obtain the special composite oil phase for the anti-freezing emulsion explosive.

Preferably, the temperature of the first mixing, the second mixing and the third mixing is independently 90 to 95 ℃.

The invention also provides the application of the special composite oil phase for the anti-freeze emulsion explosive or the special composite oil phase for the anti-freeze emulsion explosive prepared by the preparation method in the technical scheme in the preparation of the anti-freeze emulsion explosive.

The invention provides a special composite oil phase for an anti-freezing emulsion explosive, which comprises the following preparation raw materials in parts by weight: 5-30 parts of light dewaxing paste; 5-20 parts of pressure-reducing cerate; 0-30 parts of paraffin; 1-20 parts of vegetable wax; 10-30 parts of microcrystalline soft wax; 5-30 parts of vaseline; 30-45 parts of a composite emulsifier; 5-20 parts of an antifreeze agent; 1-8 parts of a low-temperature improver; the composite emulsifier is composed of polyisobutylene succinic acid alcohol amine emulsifier, Span-80 and phospholipid. According to the invention, by limiting the variety of the emulsifier and selecting the emulsifier to be reasonably matched with an appropriate oil phase material, the oil film strength and toughness of the emulsion explosive can be enhanced, particularly, the emulsion explosive can keep good elastoplasticity and rheological property under a high-cold condition, the storage stability of the emulsion explosive is improved, and the emulsion explosive is further ensured to have excellent frost resistance.

The composite oil phase special for the anti-freezing emulsion explosive is compounded by adopting flexible oil phase materials (specifically light dewaxing paste, pressure-reducing dewaxing paste, microcrystalline soft wax and vaseline), polar plant wax, an antifreeze agent, a low-temperature improver and a composite emulsifier, has reasonable long, medium and short carbon chain structures, excellent emulsifying property, excellent low-temperature dispersibility and flowability, fine and uniform latex particles, can form a flexible and compact 'wedge-shaped composite interface film', and greatly improves the long-term storage stability of the emulsion explosive; the emulsion explosive oil film prepared by the special composite oil phase provided by the invention is compact and flexible, has strong foam-fixing capacity, can obviously improve the rheological property and the flexibility of the oil film under the condition of low temperature environment, can prevent the escape of sensitized gas and the hardening of a explosive body of the emulsion explosive under the condition of low temperature and extreme cold, keeps good explosion performance and has excellent freezing resistance; the invention adopts the leftovers of petroleum refineries (specifically light dewaxing paste and pressure-reducing dewaxing paste) and the plant wax as the main raw materials, and has wide raw material sources and low cost.

The preparation method provided by the invention has the advantages of simple and reliable process, good economic benefit and convenience for industrial production and application.

Detailed Description

The invention provides a special composite oil phase for an anti-freezing emulsion explosive, which comprises the following preparation raw materials in parts by weight: 5-30 parts of light dewaxing paste; 5-20 parts of pressure-reducing cerate; 0-30 parts of paraffin; 1-20 parts of vegetable wax; 10-30 parts of microcrystalline soft wax; 5-30 parts of vaseline; 30-45 parts of a composite emulsifier; 5-20 parts of an antifreeze agent; 1-8 parts of a low-temperature improver; the composite emulsifier is composed of polyisobutylene succinic acid alcohol amine emulsifier, Span-80 and phospholipid.

In the present invention, all the raw material components are commercially available products well known to those skilled in the art unless otherwise specified.

According to the invention, the raw materials for preparing the special composite oil phase for the anti-freezing emulsion explosive comprise, by weight, 5-30 parts of light dewaxing paste, preferably 10-20 parts of light dewaxing paste, more preferably 10-15 parts of light dewaxing paste, and further preferably 13-15 parts of light dewaxing paste. In the present invention, the light dewaxed cream is preferably light deasphalted oil and/or light dewaxed oil; the light deasphalted oil and light dewaxed oil are preferably derived from a paraffin refinery.

In the invention, the raw materials for preparing the special composite oil phase for the anti-freezing emulsion explosive comprise, by weight, 5-20 parts of the pressure-reducing cerate, preferably 5-15 parts of the pressure-reducing cerate, more preferably 5-10 parts of the pressure-reducing cerate, and further preferably 6-8 parts of the pressure-reducing cerate. In the invention, the decompression cerate is preferably one or more of a second-line reduction cerate, a third-line reduction cerate and a fourth-line reduction cerate. In the invention, the light dewaxing paste and the pressure-reducing dewaxing paste are both leftovers of an oil factory, the viscosity of the light dewaxing paste is greater than that of the pressure-reducing dewaxing paste, and the light dewaxing paste and other components can be combined to prepare the composite oil phase with the viscosity, the penetration and the drop melting point suitable for the production of the emulsion explosive.

In the invention, the raw materials for preparing the special composite oil phase for the anti-freezing emulsion explosive comprise, by weight, 0-30 parts of paraffin, preferably 5-20 parts of paraffin, more preferably 5-10 parts of paraffin, and further preferably 7-9 parts of paraffin. In the present invention, the paraffin is preferably a fully refined paraffin and/or a semi-refined paraffin, and more preferably one or more of a 58# fully refined paraffin, a 60# fully refined paraffin, a 62# fully refined paraffin, a 58# semi-refined paraffin, a 60# semi-refined paraffin, and a 62# semi-refined paraffin. In the invention, the paraffin can adjust the viscosity, the penetration degree and the drop melting point of the oil phase, increase the combustion heat of the oil phase and provide high heat for the explosive.

In the invention, the raw materials for preparing the special composite oil phase for the anti-freezing emulsion explosive comprise, by weight, 1-20 parts of vegetable wax, preferably 5-15 parts of vegetable wax, more preferably 5-10 parts of vegetable wax, and further preferably 6-9 parts of vegetable wax. In the present invention, the vegetable wax is preferably hydrogenated vegetable wax, and more preferably one or more of hydrogenated bran wax, hydrogenated palm wax, and hydrogenated sugar cane wax. In the invention, the vegetable wax after hydrorefining is mainly saturated long-chain high-carbon fatty acid ester and has good emulsibility.

In the invention, the raw materials for preparing the special composite oil phase for the anti-freezing emulsion explosive comprise 10-30 parts of microcrystalline soft wax, preferably 10-20 parts of microcrystalline soft wax, more preferably 10-15 parts of microcrystalline soft wax, and further preferably 12-14 parts of microcrystalline soft wax. In the invention, the microcrystalline soft wax mainly comprises normal paraffin, isoparaffin and cycloparaffin with long side chain, has better permeability, emulsibility, adhesiveness and flexibility, and the formed emulsion film has better toughness and compactness.

In the invention, the raw materials for preparing the special composite oil phase for the anti-freezing emulsion explosive comprise, by weight, 5-30 parts of vaseline, preferably 5-20 parts of vaseline, more preferably 5-10 parts of vaseline, and further preferably 6-8 parts of vaseline. In the invention, the vaseline can enhance the flexibility and foam-fixing capability of an oil film and ensure that the emulsion explosive has good explosion performance.

In the invention, the raw materials for preparing the special composite oil phase for the anti-freezing emulsion explosive comprise 30-45 parts of composite emulsifier, preferably 30-40 parts of composite emulsifier, more preferably 34-38 parts of composite emulsifier, and further preferably 36-38 parts of composite emulsifier by weight of the light dewaxing paste. In the invention, the composite emulsifier consists of polyisobutylene succinic acid alcohol amine emulsifier, Span-80 and phospholipid; the mass ratio of the polyisobutylene succinic acid alcohol amine emulsifier, the Span-80 and the phospholipid in the composite emulsifier is preferably (17-19): (10.2-11.4): (6.8-7.6), more preferably 2.5:1.5: 1. According to the invention, the polyisobutylene succinic acid alcohol amine emulsifier and the Span-80 are used as main emulsifiers, and the phospholipid is used as an auxiliary emulsion. The composite emulsifier adopted by the invention has reasonable structures of medium, medium and short carbon chains, excellent emulsifying property, excellent low-temperature dispersibility and fluidity; the main emulsifier and the auxiliary emulsifier interact with the flexible oil phase material in the emulsifying process to form a wedge-shaped composite interface film, the film strength and flexibility are enhanced, the wrapping effect on an aqueous phase solution is stronger, latex particles are fine and uniform in distribution, a stronger inhibiting effect on the salt crystallization and polymerization of an oxidant is achieved, the prepared latex matrix is more stable, and the long-term storage stability and the anti-freezing capability of the emulsion explosive can be obviously improved.

In the invention, the polyisobutylene succinic acid alcohol amine emulsifier is preferably prepared by carrying out esterification reaction on polyisobutylene succinic anhydride and an alcohol amine compound; the polyisobutenyl succinic anhydride preferably consists of polyisobutenyl succinic anhydride with the number average molecular weight of 500 and polyisobutenyl succinic anhydride with the number average molecular weight of 1000, and the mass ratio of the polyisobutenyl succinic anhydride with the number average molecular weight of 500 to the polyisobutenyl succinic anhydride with the number average molecular weight of 1000 is preferably 1: (1 to 6), more preferably 1: (2-5), and more preferably 1: 4. In the present invention, the alcohol amine compound is preferably diethanolamine and/or triethanolamine. In the invention, the polyisobutylene succinic acid alcohol amine emulsifier introduces polar hydrophilic groups such as hydroxyl, amino, ester and the like into a molecular structure to improve the emulsifying property, enhance the anti-shearing capability and effectively improve the storage stability of the emulsion explosive.

In the present invention, the preparation method of Span-80 is preferably: dehydrating sorbitol and an acid catalyst at 165-175 ℃ under a vacuum condition; adding oleic acid and an esterification catalyst, reacting for 4-5 h at 200-220 ℃ under vacuum, cooling, and filtering to obtain Span-80; wherein the mass ratio of the oleic acid to the sorbitol is preferably (1.7-1.75): 1. the Span-80 has good emulsibility and low cost, is matched with the polyisobutene succinic acid alcohol amine emulsifier for use, has better emulsification effect, and improves the stability of the emulsion explosive.

In the invention, the raw materials for preparing the special composite oil phase for the anti-freezing emulsion explosive comprise 5-20 parts of an anti-freezing agent, preferably 5-15 parts, more preferably 5-10 parts, and further preferably 6-8 parts by weight of the light dewaxing paste. In the invention, the antifreeze is preferably one or more of naphthenic oil, transformer oil and refrigerator oil. In a specific embodiment of the present invention, when the anti-freezing agent is a mixture of transformer oil and refrigerator oil, the weight ratio of the transformer oil to the refrigerator oil is preferably 2: 3. In the invention, the antifreeze has a saturated cyclic carbon chain structure and excellent low-temperature performance.

In the invention, the raw materials for preparing the special composite oil phase for the anti-freezing emulsion explosive comprise 1-8 parts of low-temperature improver, preferably 1-5 parts, more preferably 2-4 parts, and further preferably 3-4 parts by weight of the light dewaxing paste. In the invention, the low-temperature improver is preferably one or more of poly alpha-olefin, polymethacrylate and a copolymer of higher fumarate and vinyl acetate. In a specific embodiment of the present invention, when the low temperature improver is a mixture of polyalphaolefin and higher fumarate with a vinyl acetate copolymer, the weight ratio of the polyalphaolefin and higher fumarate with the vinyl acetate copolymer is preferably 1: 1. In the invention, the low-temperature improver has excellent low-temperature dispersibility and fluidity, can effectively refine wax crystals, and can obviously improve the rheological property and flexibility of an oil film formed by the composite oil phase at low temperature.

The invention provides a preparation method of the special composite oil phase for the anti-freezing emulsion explosive, which comprises the following steps:

carrying out first mixing on the light dewaxing paste and the reduced pressure dewaxing paste to obtain a first mixture;

secondly mixing the first mixture, microcrystalline soft wax, vegetable wax, vaseline, paraffin, an antifreeze agent and a low-temperature improver to obtain a second mixture;

and thirdly mixing the second mixture and the composite emulsifier to obtain the special composite oil phase for the anti-freezing emulsion explosive.

The light dewaxing cream and the reduced pressure dewaxing cream are subjected to first mixing to obtain a first mixture. In the present invention, the temperature of the first mixing is preferably 90 to 95 ℃. The mixing method is not particularly limited, and the light dewaxing paste and the reduced pressure dewaxing paste are preferably mixed uniformly.

After the first mixture is obtained, the invention carries out second mixing on the first mixture, the microcrystalline soft wax, the vegetable wax, the vaseline, the paraffin, the antifreeze and the low-temperature improver to obtain a second mixture. In the present invention, the temperature of the second mixing is preferably 90 to 95 ℃.

In the present invention, the specific process of the second mixing is preferably: the microcrystalline soft wax, the vegetable wax, the vaseline and the paraffin are heated to be molten, mixed with the first mixture, and then the obtained mixed material is sequentially mixed with the antifreeze and the low-temperature improver to obtain a second mixture. In the present invention, it is preferable that the first mixture is dehydrated and then subjected to the second mixing process. In the invention, the dehydration is preferably carried out under vacuum condition, and the temperature of the dehydration is preferably 105-110 ℃. In the invention, the melting temperature of the microcrystalline soft wax, the vegetable wax, the vaseline and the paraffin is preferably 90-95 ℃.

And after a second mixture is obtained, carrying out third mixing on the second mixture and the composite emulsifier to obtain the special composite oil phase for the anti-freeze emulsion explosive. In the present invention, the temperature of the third mixing is preferably 90 to 95 ℃. In the invention, the composite emulsifier is preferably heated to 60-70 ℃ and then is subjected to a third mixing process with the second mixture.

After the third mixing is finished, preferably, sequentially filtering and forming the obtained system to obtain the special composite oil phase for the anti-freeze emulsion explosive. The present invention is not particularly limited to the specific process of filtration and forming, and filtration and forming methods known to those skilled in the art may be used.

The invention also provides the application of the special composite oil phase for the anti-freeze emulsion explosive or the special composite oil phase for the anti-freeze emulsion explosive prepared by the preparation method in the technical scheme in the preparation of the anti-freeze emulsion explosive. In the invention, the preparation method of the anti-freezing emulsion explosive is preferably as follows: preparing a water phase material into a water phase solution, and keeping the temperature at 90-100 ℃ for later use, wherein the mass concentration of the water phase solution is preferably 88-90%; melting the special composite oil phase for the anti-freezing emulsion explosive in the technical scheme at 85-95 ℃ to obtain a melted oil phase, and preserving heat for later use; and (3) continuously pumping the aqueous phase solution and the melted oil phase into an emulsifier for emulsification by metering, cooling the emulsified colloid to 48-52 ℃, then feeding the colloid into a sensitizer, meanwhile, feeding a foaming agent and an accelerant into the sensitizer by a metering continuous pump for sensitization, and completing chemical foaming under the dispersion of the sensitizer to obtain the anti-freezing emulsion explosive. In the invention, the composite oil phase special for the anti-freeze emulsion explosive preferably accounts for 6-7% of the total amount of the water phase material and the composite oil phase special for the anti-freeze emulsion explosive. In the present invention, the water phase material is preferably composed of ammonium nitrate, sodium nitrate and water; the rotation speed of the emulsification is below 1450 r/min; the rotating speed of the sensitization is below 120 r/min. The specific composition of the blowing agent and accelerator is not particularly limited in the present invention, and blowing agents and accelerators known to those skilled in the art can be used. In a specific embodiment of the present invention, the blowing agent is preferably an aqueous solution of sodium nitrite, and the accelerator is preferably based on phosphoric acid.

The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.