CN112552133A - Low-detonation-velocity modified ammonium nitrate fuel oil explosive and preparation method thereof - Google Patents
Low-detonation-velocity modified ammonium nitrate fuel oil explosive and preparation method thereof Download PDFInfo
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- CN112552133A CN112552133A CN202011568370.7A CN202011568370A CN112552133A CN 112552133 A CN112552133 A CN 112552133A CN 202011568370 A CN202011568370 A CN 202011568370A CN 112552133 A CN112552133 A CN 112552133A
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B31/00—Compositions containing an inorganic nitrogen-oxygen salt
- C06B31/28—Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate
- C06B31/285—Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate with fuel oil, e.g. ANFO-compositions
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
- C06B21/0008—Compounding the ingredient
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
- C06B21/0033—Shaping the mixture
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Abstract
The invention provides a low-detonation-velocity modified ammonium nitrate fuel oil explosive and a preparation method thereof. The low-detonation-velocity modified ammonium nitrate fuel oil explosive comprises the following raw materials in parts by weight: 20-50 parts of modified ammonium nitrate fuel oil explosive powder; 47.25-75.6 parts of porous ammonium nitrate; 2-8 parts of inert substances; 2.75-4.4 parts of light diesel oil, the product obtained by the invention has low detonation velocity, stable detonation, good fluidity and simple process, and can meet the requirement of explosives with special requirements on the detonation velocity of the explosives.
Description
Technical Field
The invention relates to an industrial explosive, in particular to a low-detonation-velocity modified ammonium nitrate fuel oil explosive and a preparation method thereof.
Background
The low-detonation-velocity explosive is a type of explosive with lower limit detonation velocity and is widely applied to the fields of explosive welding, smooth blasting, presplitting blasting, seismic surveying and the like.
Firstly, a large amount of salt is added into the powdery explosive, and the powdery explosive is mixed by a field manual mixing and sieving method, however, the mixing of the explosive by the method is not uniform, and the influence of seasons can cause the extremely unstable low-speed detonation of the explosive; secondly, a certain amount of diluent is added in the explosive production process to reduce the detonation velocity of the explosive, the explosive produced by the method has stable detonation and low detonation velocity, but the production process is more complex, the equipment investment is large, the production cost is high, and the popularization is not easy.
Disclosure of Invention
In view of the above, the invention aims to overcome the problems of unstable detonation and complex process of the existing low detonation velocity explosive, and provides a low detonation velocity modified ammonium nitrate fuel oil explosive with low detonation velocity, stable detonation, good free-running property and simple process and a preparation method thereof.
The specific technical scheme is as follows:
the invention provides a low-detonation-velocity modified ammonium nitrate fuel oil explosive which comprises the following raw materials in parts by weight:
more preferably, the low detonation velocity modified ammonium nitrate fuel oil explosive comprises the following raw materials in parts by weight:
more preferably, the low detonation velocity modified ammonium nitrate fuel oil explosive comprises the following raw materials in parts by weight: 20 parts of modified ammonium nitrate fuel oil explosive powder, 75.6 parts of porous ammonium nitrate, 2 parts of inert substances and 4.4 parts of light diesel oil.
Preferably, the inert substance is wood flour and/or rice bran.
Preferably, the modified ammonium nitrate fuel oil explosive powder raw material comprises a water phase raw material and an oil phase raw material.
Preferably, the components of the water phase raw material comprise, by weight percent: 92.5-94% of ammonium nitrate, 0.15-0.5% of sodium nitrate and 0.02-0.15% of additive.
Preferably, the components of the oil phase raw material comprise, by weight: 40-60% of solid composite oil phase and 40-60% of liquid composite oil phase.
Preferably, the additive is sodium methylene dinaphthalene sulfonate.
The invention also provides a preparation method of the low detonation velocity modified ammonium nitrate fuel oil explosive, which comprises the following steps:
(1) preparation of water-phase raw material: dissolving 92.5-94 wt% of ammonium nitrate and 0.15-0.5 wt% of sodium nitrate in water, adding 0.02-0.15 wt% of additive, dissolving and mixing uniformly, and controlling the temperature at 118-125 ℃;
(2) preparing an oil phase raw material: after melting the solid composite oil phase with the weight percentage of 40-60%, adding the solid composite oil phase with the weight percentage of 40-60% into the liquid composite oil phase, and uniformly mixing, wherein the temperature is controlled to be 85-90 ℃;
(3) preparing modified ammonium nitrate fuel oil explosive powder: and (3) simultaneously pumping the water-phase raw material obtained in the step (1) and the oil-phase raw material obtained in the step (2) into a dynamic mixer for mixing, controlling the discharge temperature to be 115-130 ℃ after mixing, feeding the materials mixed by the dynamic mixer into a powder making tank, and performing vacuum drying under negative pressure to form modified ammonium nitrate fuel oil explosive powder.
(4) Preparing a modified ammonium nitrate fuel oil explosive: weighing 47.25-75.6 parts by weight of porous granular ammonium nitrate and 2.75-4.4 parts by weight of light diesel oil, adding into a mixing machine, and uniformly mixing; weighing 20-50 parts by weight of the modified ammonium nitrate fuel oil explosive powder obtained in the step (3), adding into a mixing machine, and uniformly mixing; and finally, adding 2-8 parts by weight of inert substances into a mixing machine, and uniformly mixing to form the low-detonation-velocity modified ammonium nitrate fuel oil explosive.
Preferably, the vacuum degree of vacuum drying in the step (3) is above-80 kpa.
The invention has the beneficial effects that:
1. compared with the prior art, the low-detonation-velocity modified ammonium nitrate fuel oil explosive is powder with certain free-running property formed by mixing water and oil under the condition of vacuum negative pressure, porous ammonium nitrate particles with large particle sizes are added as an oxidant to reduce the chemical reaction speed and control the detonation velocity, the used light diesel oil has good compatibility with ammonium nitrate, so that a mixed explosive filled explosive roll has detonator sensitivity and simultaneously adjusts oxygen balance, the inert substance is added as a reducing agent of a combustible agent and the ammonium nitrate fuel oil explosive to effectively control the detonation velocity of the explosive, the whole explosive system can also have the physical sensitization effect, and all components interact with each other, so that the detonation velocity of the low-detonation-velocity modified ammonium nitrate fuel oil explosive can be adjusted within 2145-2874 m/s, and the stacking density is 0.68-0.76 g/cm3And the use condition with special requirements on explosion speed is met.
2. The modified ammonium nitrate fuel oil explosive powder has the advantages that the methylene dinaphthalene sodium sulfonate (a diffusant NNO) is added into the water phase raw material of the modified ammonium nitrate fuel oil explosive powder to serve as an additive, the modified ammonium nitrate fuel oil explosive powder has excellent diffusibility and protective colloid performance, is easy to dissolve in water with any hardness, the water phase can be uniformly mixed with the oil phase in the modified ammonium nitrate fuel oil explosive powder, vacuumizing and puffing in the preparation process are facilitated, the obtained ammonium nitrate fuel oil explosive is good in flowing property, and loading.
3. The low-detonation-velocity modified ammonium nitrate fuel oil explosive disclosed by the invention is simple in preparation process, wide in raw material source, convenient for industrial production and suitable for a low-detonation-velocity use environment with special requirements on the detonation velocity of the explosive.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the present invention will be further described in detail with reference to the following embodiments.
The invention provides a low-detonation-velocity modified ammonium nitrate fuel oil explosive and a preparation method thereof, the obtained explosive has low detonation velocity, stable detonation, good free-running property and simple process, and the related explosive is mainly suitable for various environments with special use requirements on the detonation velocity, and concretely, the invention firstly provides the low-detonation-velocity modified ammonium nitrate fuel oil explosive which comprises the following raw materials in parts by weight:
in the raw materials of the invention, the modified ammonium nitrate fuel oil explosive powder is a powder with certain fluidity formed by mixing a water phase raw material and an oil phase raw material under a vacuum negative pressure condition, specifically, the modified ammonium nitrate fuel oil explosive powder is formed by mixing the water phase raw material and the oil phase raw material and then performing negative pressure vacuum drying, and in the embodiment of the invention, the modified ammonium nitrate fuel oil explosive powder is preferably 20-30 parts, more preferably 20 parts.
In the embodiment of the invention, the water phase raw materials comprise 92.5-94% of ammonium nitrate, 0.15-0.5% of sodium nitrate, 0.02-0.15% of additives and water in percentage by weight, wherein the additives can be sodium methylenedinaphthalene sulfonate (a diffusant NNO), have excellent diffusivity and protective colloid performance and are easy to dissolve in water with any hardness, so that the water phase can be uniformly mixed with the oil phase, and the preparation process is convenient for vacuumizing and puffing.
The oil phase raw materials comprise a solid composite oil phase and a liquid composite oil phase, the solid composite oil phase and the liquid composite oil phase are mutually melted and mixed and then form powder with certain fluidity with a water phase under the vacuum negative pressure condition, and when the ammonium nitrate is mixed with the composite oil phase, the composite oil phase can be uniformly distributed on the surface of the ammonium nitrate, so that the mixing is more uniform, and the detonation performance of the explosive is improved. In the embodiment of the invention, the oil phase raw materials can be 40-60% of solid composite oil phase and 40-60% of liquid composite oil phase by weight percentage. The sources of all raw materials of the modified ammonium nitrate fuel oil explosive powder are not particularly limited and can be obtained from the market.
The porous ammonium nitrate particles are used as the oxidizer of the ammonium nitrate fuel oil explosive, the crushing is not needed, the content of ammonium nitrate is more than or equal to 99.5 percent, the free moisture is less than or equal to 0.3 percent, the sensitivity is reduced, the chemical reaction speed is low, the explosion speed is reduced, the surface is irregular, according to the explosion hot point theory, a hot point required by explosion is easy to form under the external action, the explosion sensitivity of the explosive is increased, and the explosive is mixed with oil phase materials such as light diesel oil and the like for charging, so that the explosive cartridge has the detonator sensitivity, and meanwhile, the light diesel oil is used as the reducing agent of the ammonium nitrate fuel oil explosive, is safe to store, good in compatibility with ammonium nitrate, non-toxic, capable of adjusting the oxygen. The sources of the porous ammonium nitrate and the light diesel oil are not particularly limited and can be commercially available, and the porous ammonium nitrate is 47.25-75.6 parts by weight, preferably 66.15-75.6 parts by weight, and more preferably 75.6 parts by weight; 2.75-4.4 parts of light diesel oil, preferably 3.85-4.4 parts, and more preferably 4.4 parts.
The invention adds proper inert substance into the explosive, which is a safe and easily obtained combustible agent, can be used as a reducing agent of the ammonium nitrate fuel oil explosive, can effectively control the detonation velocity of the explosive, and can adjust the stacking density and the explosion performance of the explosive simultaneously. The present invention is not particularly limited in kind and source of the inert material, and in some embodiments of the present invention, the inert material may be selected from 2 to 8 parts by weight of wood flour or rice bran. The water content of the wood powder is less than or equal to 8 percent, the fineness of the wood powder is more than 90 percent and passes through a 0.85mm aperture test sieve, and the fineness of the wood powder is 50 to 60 percent and passes through a 0.45mm aperture test sieve.
Compared with the traditional ammonium nitrate fuel oil explosive, the modified ammonium nitrate fuel oil explosive obtained by the formula of the invention has good free-running property, stable performance and detonator sensitivity, and meets the requirement of low detonation velocity. In the embodiment of the invention, the detonation velocity of the modified ammonium nitrate fuel oil explosive can be adjusted between 2145 and 2874m/s, and the bulk density is 0.68 to 0.76g/cm3In the meantime.
In order to make the explosive easy to prepare and stable in performance, the invention also provides a preparation method of the low-detonation velocity modified ammonium nitrate fuel oil explosive, which is simple in process and comprises the following steps:
(1) preparation of water-phase raw material: dissolving 92.5-94 wt% of ammonium nitrate and 0.15-0.5 wt% of sodium nitrate in water, adding 0.02-0.15 wt% of additive, dissolving and mixing uniformly, and controlling the temperature at 118-125 ℃;
(2) preparing an oil phase raw material: after melting the solid composite oil phase with the weight percentage of 40-60%, adding the solid composite oil phase with the weight percentage of 40-60% into the liquid composite oil phase, and uniformly mixing, wherein the temperature is controlled to be 85-90 ℃;
(3) preparing modified ammonium nitrate fuel oil explosive powder: and (3) simultaneously pumping the water-phase raw material obtained in the step (1) and the oil-phase raw material obtained in the step (2) into a dynamic mixer for mixing, controlling the discharge temperature to be 115-130 ℃ after mixing, feeding the materials mixed by the dynamic mixer into a powder making tank, and performing vacuum drying under negative pressure to form modified ammonium nitrate fuel oil explosive powder.
(4) Preparing a modified ammonium nitrate fuel oil explosive: weighing 47.25-75.6 parts by weight of porous granular ammonium nitrate and 2.75-4.4 parts by weight of light diesel oil, adding into a mixing machine, and uniformly mixing; weighing 20-50 parts by weight of the modified ammonium nitrate fuel oil explosive powder obtained in the step (3), adding into a mixing machine, and uniformly mixing; and finally, adding 2-8 parts by weight of inert substances into a mixing machine, and uniformly mixing to form the low-detonation-velocity modified ammonium nitrate fuel oil explosive.
The discharge temperature is controlled to be 115-130 ℃ after mixing in the preparation of the modified ammonium nitrate fuel oil explosive powder, the temperature in the range is adaptive to the raw material proportion, so that the ammonium nitrate is uniformly expanded in the expansion process, the ammonium nitrate cannot be crystallized, good powder is formed, and the ammonium nitrate cannot be expanded into powder with free-flowing property when the ammonium nitrate is beyond the range.
In the preparation method of the present invention, the degree of vacuum of the vacuum drying in the step (3) is-80 kpa or more.
The low-detonation-velocity modified ammonium nitrate fuel oil explosive disclosed by the invention is stable in performance, meets various use environments with special requirements on low detonation velocity, basically has no environmental pollution after being fried, is low in price and is easy to produce.
The present invention is described in detail in the above, and the following are examples of the present invention, wherein the oil phase raw materials are commercially available products in grams in the examples, and are from Shimen successful Polymer materials manufacturing Co.
Example 1 preparation of a Low detonation velocity modified ANFO
The water phase raw materials in percentage by weight: 93.0 percent of ammonium nitrate, 0.2 percent of sodium nitrate, 0.02 percent of dispersing agent NNO and water;
the oil phase comprises the following raw materials in percentage by weight: 47.6 percent of solid composite oil phase and 52.4 percent of liquid composite oil phase;
ammonium nitrate fuel oil explosive in parts by weight: 20 parts of modified ammonium nitrate fuel oil explosive powder, 75.6 parts of porous ammonium nitrate, 2 parts of wood powder and 4.4 parts of light diesel oil;
the ammonium nitrate fuel oil explosive is prepared according to the weight parts of the raw materials, and the preparation method comprises the following steps:
(1) preparation of water-phase raw material: dissolving ammonium nitrate and sodium nitrate in water, adding a diffusant NNO, dissolving and mixing uniformly, and controlling the temperature to be 118-125 ℃;
(2) preparing an oil phase raw material: after the solid composite oil phase is melted, adding the solid composite oil phase into the liquid composite oil phase, and uniformly mixing, wherein the temperature is controlled to be 85-90 ℃;
(3) preparing modified ammonium nitrate fuel oil explosive powder: and (3) simultaneously pumping the water phase raw material obtained in the step (1) and the oil phase raw material obtained in the step (2) into a dynamic mixer for mixing, controlling the discharge temperature to be 115-130 ℃ after mixing, feeding the material mixed by the dynamic mixer into a powder preparation tank, and drying under negative pressure vacuum (the vacuum degree is more than-80 kpa) to form modified ammonium nitrate fuel oil explosive powder.
(4) Preparing a modified ammonium nitrate fuel oil explosive: weighing porous granular ammonium nitrate and light diesel oil, adding into a mixing machine, and uniformly mixing; weighing the modified ammonium nitrate fuel oil explosive powder obtained in the step (3), adding into a mixing machine, and uniformly mixing; and finally adding wood powder into a mixing machine, and uniformly mixing to form the low-detonation-velocity modified ammonium nitrate fuel oil explosive.
Example 2 preparation of a Low detonation velocity modified ANFO
The water phase raw materials in percentage by weight: 93.00 percent of ammonium nitrate, 0.15 percent of sodium nitrate, 0.15 percent of dispersing agent NNO and water;
the oil phase comprises the following raw materials in percentage by weight: 50% of solid composite oil phase and 50% of liquid composite oil phase;
ammonium nitrate fuel oil explosive in parts by weight: 30 parts of modified ammonium nitrate fuel oil explosive powder, 66.15 parts of porous ammonium nitrate, 4 parts of rice bran and 3.85 parts of light diesel oil;
the preparation method is the same as that of example 1, except that the weight parts of the raw materials are the same as the mixture ratio of the embodiment.
Example 3 preparation of a Low detonation velocity modified ANFO
The water phase raw materials in percentage by weight: 92.50% of ammonium nitrate, 0.30% of sodium nitrate, 0.03% of dispersing agent NNO and water;
the oil phase comprises the following raw materials in percentage by weight: 40% of solid composite oil phase and 60% of liquid composite oil phase;
ammonium nitrate fuel oil explosive in parts by weight: 40 parts of modified ammonium nitrate fuel oil explosive powder, 56.7 parts of porous ammonium nitrate, 5 parts of rice bran and 3.3 parts of light diesel oil;
the preparation method is the same as that of example 1, except that the weight parts of the raw materials are the same as the mixture ratio of the embodiment.
Example 4 preparation of a Low detonation velocity modified ANFO
The water phase raw materials in percentage by weight: 94.0 percent of ammonium nitrate, 0.5 percent of sodium nitrate, 0.1 percent of dispersing agent NNO and water;
the oil phase comprises the following raw materials in percentage by weight: 60% of solid composite oil phase and 40% of liquid composite oil phase;
ammonium nitrate fuel oil explosive in parts by weight: 50 parts of modified ammonium nitrate fuel oil explosive powder, 47.25 parts of porous ammonium nitrate, 8 parts of rice bran and 2.75 parts of light diesel oil;
the preparation method is the same as that of example 1, except that the weight parts of the raw materials are the same as the mixture ratio of the embodiment.
Comparative example 1 preparation of ammonium nitrate fuel oil explosive
The preparation process is identical to example 1, except that no wood flour is added.
Comparative example 2 preparation of ammonium nitrate fuel oil explosive
The preparation method is the same as example 1, except that the diffusant NNO is not added.
Effect example 1 testing of explosive Properties
The explosives obtained in examples 1 to 4 and comparative examples 1 to 2 and by the conventional method were subjected to the performance test and the results are shown in table 1, wherein the conventional explosive was selected from patent document CN 106748596B.
TABLE 1 test of explosive Properties
In table 1, it can be seen from comparison between examples 1 to 4 and comparative example 1 that the addition of the inert substances such as wood flour and rice bran of the present invention acts as a reducing agent to effectively reduce the explosion velocity; as can be seen from comparison between examples 1-4 and comparative example 2, the water phase raw material of the modified ammonium nitrate fuel oil explosive powder disclosed by the invention uses the dispersing agent NNO as an additive, so that the dispersing property is excellent, the water phase can be uniformly mixed with the oil phase, and the free-running property of the explosive body is improved; compared with the traditional explosive, the low-detonation-velocity modified ammonium nitrate fuel oil explosive disclosed by the invention is low in detonation velocity, high in explosive property and density, has detonator sensitivity, stable detonation, simple in manufacturing process and wide in raw material source, can meet the requirements of the low-detonation-velocity explosive, is convenient for industrial production, and is suitable for a low-detonation-velocity use environment with special requirements on the detonation velocity of the explosive.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (10)
1. A low-detonation-velocity modified ammonium nitrate fuel oil explosive is characterized by comprising the following raw materials in parts by weight:
2. the low detonation velocity modified ammonium nitrate fuel oil explosive according to claim 1, characterized in that the raw materials comprise, in parts by weight:
3. the low detonation velocity modified ammonium nitrate fuel oil explosive according to claim 2, characterized in that the low detonation velocity modified ammonium nitrate fuel oil explosive comprises the following raw materials in parts by weight: 20 parts of modified ammonium nitrate fuel oil explosive powder, 75.6 parts of porous ammonium nitrate, 2 parts of inert substances and 4.4 parts of light diesel oil.
4. A low detonation velocity modified ammonium nitrate fuel oil explosive according to any one of claims 1 to 3, characterised in that the inert substance is wood flour and/or rice bran.
5. The low detonation velocity modified anfo explosive according to any of claims 1-3, wherein the modified anfo explosive powder feedstock comprises a water phase feedstock and an oil phase feedstock.
6. The low detonation velocity modified ammonium nitrate fuel oil explosive according to claim 5, characterized in that the components of the water phase raw material comprise, in weight percent: 92.5-94% of ammonium nitrate, 0.15-0.5% of sodium nitrate and 0.02-0.15% of additive.
7. The low detonation velocity modified ammonium nitrate fuel oil explosive according to claim 5, characterized in that the components of the oil phase raw material comprise, in weight percent: 40-60% of solid composite oil phase and 40-60% of liquid composite oil phase.
8. The low detonation velocity modified ammonium nitrate fuel oil explosive of claim 6, characterized in that the additive is sodium methylene bis naphthalene sulfonate.
9. A preparation method of a low-detonation-velocity modified ammonium nitrate fuel oil explosive is characterized by comprising the following steps:
(1) preparation of water-phase raw material: dissolving 92.5-94 wt% of ammonium nitrate and 0.15-0.5 wt% of sodium nitrate in water, adding 0.02-0.15 wt% of additive, dissolving and mixing uniformly, and controlling the temperature at 118-125 ℃;
(2) preparing an oil phase raw material: after melting the solid composite oil phase with the weight percentage of 40-60%, adding the solid composite oil phase with the weight percentage of 40-60% into the liquid composite oil phase, and uniformly mixing, wherein the temperature is controlled to be 85-90 ℃;
(3) preparing modified ammonium nitrate fuel oil explosive powder: and (3) simultaneously pumping the water-phase raw material obtained in the step (1) and the oil-phase raw material obtained in the step (2) into a dynamic mixer for mixing, controlling the discharge temperature to be 115-130 ℃ after mixing, feeding the materials mixed by the dynamic mixer into a powder making tank, and performing vacuum drying under negative pressure to form modified ammonium nitrate fuel oil explosive powder.
(4) Preparing a modified ammonium nitrate fuel oil explosive: weighing 47.25-75.6 parts by weight of porous granular ammonium nitrate and 2.75-4.4 parts by weight of light diesel oil, adding into a mixing machine, and uniformly mixing; weighing 20-50 parts by weight of the modified ammonium nitrate fuel oil explosive powder obtained in the step (3), adding into a mixing machine, and uniformly mixing; and finally, adding 2-8 parts by weight of inert substances into a mixing machine, and uniformly mixing to form the low-detonation-velocity modified ammonium nitrate fuel oil explosive.
10. The method for preparing a low detonation velocity modified ammonium nitrate fuel oil explosive according to claim 9, characterized in that the vacuum degree of vacuum drying in the step (3) is more than-80 kpa.
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| CN114315491A (en) * | 2022-01-18 | 2022-04-12 | 湖北东神天神实业有限公司 | Method for preparing powdery ammonium nitrate fuel oil explosive and product thereof |
| CN114315491B (en) * | 2022-01-18 | 2022-09-09 | 湖北东神天神实业有限公司 | Method for preparing powdery ammonium nitrate fuel oil explosive and product thereof |
| CN116425600A (en) * | 2022-12-26 | 2023-07-14 | 神华准能资源综合开发有限公司 | White mud-based inert filler composition, white mud-based inert filler, preparation method of white mud-based inert filler, ammonium nitrate fuel oil explosive composition and ammonium nitrate fuel oil explosive |
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