JP2000143380A - Explosive composition and method for producing the same - Google Patents

Abstract

(57) [Abstract] [Problem] To be excellent in handling safety, the particle diameter of the crystallized inorganic oxide is uniform, stable to temperature load,
Provided are an explosive composition or a cast explosive composition which is stable for a long period of time in a wide temperature range, and in which explosives in a container can be easily removed with hot water, and a method for producing the same. SOLUTION: The inorganic oxidate is composed of an inorganic oxidate, water, an organic liquid fuel and a water-absorbing substance, and if necessary, a fine hollow sphere, wherein the inorganic oxidate is crystallized, and the periphery of the crystallized particles is an organic liquid fuel. Explosive composition coated with, a molded explosive composition obtained by molding it into a predetermined shape by a molding die, and a method for producing the same.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an explosive composition which can be used for explosives used for industrial blasting work such as tunneling, quarrying, mining, etc. and explosives used for land mines, mines, etc. The present invention relates to explosive compositions and methods for producing them.

[0002]

2. Description of the Related Art Industrial explosives include ammonium nitrate explosives composed of porous prill nitrate and an oil, colloidal dynamite containing nitroglycerin, and water-in-oil type (hereinafter referred to as W / W).
There is an aqueous explosive such as an emulsion explosive. Since a nitric acid explosive cannot be detonated with a single detonator, an explosive called a booster is used. This is because the detonation sensitivity of the nitrite explosive is less sensitive than other general explosives, and it can be said that the safety is higher accordingly. On the other hand, hydrous explosives generally have a composition including a continuous phase composed of an organic liquid fuel, a dispersed phase composed of an aqueous solution of an inorganic oxide salt, an emulsifier, and a bubble retainer. As the bubble retainer, a fine hollow sphere is usually used. . Since the explosive composition does not contain explosives, it is more safe to handle than colloidal dynamite, and its use is gradually spreading.

Further, Japanese Patent Publication No. 6-41397 discloses that
After using a specific emulsifier to form a W / O emulsion explosive with low stability at a water content of 5% by weight or less, the inorganic explosive is poured into a predetermined mold and cooled to remove the inorganic oxidate. A crystallized explosive composition is disclosed. As explosive compositions for explosives such as mines and mines, conventionally, trinitrotoluene (hereinafter abbreviated as TNT) or composition B (hexogen (hereinafter abbreviated as RDX) 60% by weight, TNT 40% by weight, Explosives mainly composed of nitro compounds, such as wax (1% by weight of the outer part), pentrite (mixture of TNT and pen slit), and RD
X or hexamethylenetetranitroamine (hereinafter HMX
(Hereinafter abbreviated as PBX) dispersed in a resin binder. T
Explosives mainly composed of nitro compounds, such as NT and RDX, are heated to a melting point or eutectic point or higher and are loaded into the shell, while PBX is a mixture of RDX and HMX mixed with a plasticizer in vacuum. Alternatively, it is cast under normal pressure and then thermally cured. PBX is characterized by low mixing and casting temperatures and excellent safety.

[0004]

The nitrate oil explosives are usually explosives in which light oil is impregnated into porous prill nitrate, so that they have excellent fluidity and can be used not only for light blasting such as crushed stone and limestone mining. It is also used in mining and civil blasting sites. However, this explosive is inferior in water resistance, so that it is difficult to use it in the presence of water in the blast borehole or at a site where spring water is present. At the light blasting site, extremely troublesome work such as draining the water in the charging hole in advance, inserting a water-resistant plastic tube into the charging hole, and pouring the nitrate oil explosive there is necessary. There was a problem. Further, when a temperature load is applied to the nitrate oil explosive, there is a problem that the particles of the porous prill nitrate collapse and become powdery, or solidification occurs due to the adsorption of moisture, and it is difficult to use the blasting site. .

[0005] Since a W / O emulsion explosive is essentially a thermodynamically unstable system, when a temperature load such as extremely low temperature to high temperature is applied, the emulsion is destroyed and the detonation sensitivity is lowered, and the explosion sensitivity is reduced. There was a problem of not firing.
Further, the explosive composition disclosed in Japanese Patent Publication No. 6-41397 has a problem that the safety in the production stage is poor because the amount of contained water is small. In addition, since the stability of the W / O emulsion explosive is poor, there is also a problem that the particle diameters are not uniform and the crystallized inorganic oxide salt is unstable with respect to the temperature load.

In conventional explosives, TNT, composition B, pentolite, etc., either of a fusion type explosive or a PBX type explosive, once formed into a shell,
At the time of disposal, there is a problem that it is difficult to dispose by a method other than explosion. The present invention has been made by paying attention to the problems existing in the prior art as described above. Its purpose is to have excellent handling safety, uniform particle size of crystallized inorganic oxide, stable to temperature load, and stable for a long time in a wide temperature range, and Another object of the present invention is to provide an explosive composition or a cast explosive composition that can easily remove an explosive in a container with warm water, and a method for producing the same.

[0007]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to achieve the above object, and as a result, have made inorganic oxyacid salts and organic liquid fuel into a specific form, and added a water-absorbing substance thereto. It has been found that these problems can be solved by mixing, and the present invention has been completed. That is, the explosive composition of the first invention comprises an inorganic oxide, water, an organic liquid fuel and a water-absorbing substance, wherein the inorganic oxide is crystallized, and the periphery of the crystallized particles is an organic liquid. Explosive composition coated with fuel. The explosive composition of the second invention is the explosive composition of the first invention, which further contains a hollow microsphere.

[0008] A third aspect of the present invention is a cast explosive composition obtained by molding the explosive composition according to the first or second aspect into a predetermined shape using a molding die. The method for producing the explosive composition of the fourth invention comprises a step of mixing and emulsifying an inorganic oxide, water and an organic liquid fuel to form a water-in-oil emulsion; This is a method for producing an explosive composition comprising a step of mixing fine hollow spheres if necessary, and a step of cooling the mixture to room temperature or lower to crystallize an inorganic oxide.

[0009]

Embodiments of the present invention will be described below in detail. The explosive composition of the present invention,
Inorganic oxide, water, organic liquid fuel and water-absorbing substance, if necessary, consisting of micro hollow spheres, the inorganic oxide is crystallized, and the periphery of the crystallized particles is covered with organic liquid fuel. It is a feature. The inorganic oxyacid salts include all those conventionally used for W / O emulsion explosives. As a specific example,
For example, alkali metals such as ammonium nitrate, sodium nitrate and calcium nitrate, nitrates of alkaline earth metals, inorganic perchlorates such as ammonium perchlorate and sodium perchlorate, and water-soluble amine nitrates such as hydrazine nitrate and monomethylamine nitrate. Is mentioned. Among these, ammonium nitrate alone or a mixture of ammonium nitrate and another inorganic oxidate is preferred from the viewpoint of low dissolution temperature and large dissolution amount. At that time, the ratio of the other inorganic oxide to 100 parts by weight of ammonium nitrate is usually preferably 100 parts by weight or less.

The proportion of these inorganic oxide salts in the total composition is usually 20 to 90% by weight, preferably 40 to 90% by weight.
90% by weight. If the amount is less than 20% by weight, the explosive power of the explosive is weak. On the other hand, if it exceeds 90% by weight, the temperature at which a W / O type emulsion explosive is formed becomes high, and it tends to be unsuitable for production. Further, the inorganic oxyacid salt is formed into a W / O type emulsion by preparing a uniform aqueous solution in advance, adding other components, and mixing and emulsifying the mixture. At that time, it is still in the form of a droplet, but then the emulsion structure is destroyed by cooling, and a crystallized solid state is obtained. The diameter of the crystallized fine particles of such an inorganic oxide salt is not particularly limited as long as the purpose as the explosive composition or the cast explosive composition of the present invention can be achieved, but is preferably in the range of about 1 to 10 μm. . The mixing ratio of water is not particularly limited as long as the object as the explosive composition or the cast explosive composition of the present invention can be achieved, but is preferably 3 to 15% by weight, more preferably 5 to 10% by weight in the whole composition. It is. As the mixing ratio of water decreases, the impact sensitivity of the W / O emulsion explosive tends to increase. Conversely, as the mixing ratio of water increases,
When a temperature load is applied, the crystallized inorganic oxide salt is re-dissolved and the crystal grows large, and the sensitivity as an explosive decreases, and the energy as an explosive tends to decrease.

The organic liquid fuel is a wax alone or a mixture of a wax and an emulsifier. The wax is
For example, it is selected from synthetic waxes such as polyethylene wax, petroleum waxes such as paraffin wax and microcrystalline wax, and mineral waxes such as montan wax. From the viewpoint of energy and equipment required for heating, those having a melting point of 70 ° C. to 130 ° C. are preferable, and in addition to the above-mentioned points, urea non-addition rate is 30% or less. Polyethylene wax.

The most preferred waxes have an additional oil content of 1
% By weight or less. For example, polyethylene wax. The wax is used alone or as a mixture. The proportion of the wax in the whole composition is usually 0.1 to 10% by weight, preferably 1 to 5% by weight.
It is. If it is less than 0.1% by weight, it is difficult to form a W / O emulsion explosive, while if it exceeds 10% by weight, the oil phase surrounding the dispersed droplets in the emulsion becomes large and the reactivity decreases. Tend to. The melting point was measured by a method of cooling a molten sample, such as paraffin wax or montan wax, having a relatively low melting point, as described in JIS K 2235, and by DSC (differential scanning calorimetry) for polyethylene wax having a high melting point. Method).

In the measurement of the urea non-addition rate, a sample is dissolved in benzene, and urea to which methyl ethyl ketone is added is added while stirring to form a urea adduct. Next, this is filtered and the solvent in the filtrate is evaporated to make the weight (% by weight) of the residual oil a non-adduct of urea. (For example, described on pages 534 to 548 of Sangyo Tosho Co., Ltd., published by Tozo Amamiya, "Petrochemicals"). The measurement of the oil content is a method shown in JIS K 2235. That is, the sample is dissolved in methyl ethyl ketone, cooled to −32 ° C., the precipitated wax is filtered, the solvent in the filtrate is evaporated, the amount of residual oil is measured, and the oil content is calculated.

As the emulsifier, any of those conventionally used in W / O emulsion explosives can be used.
For example, sorbitan monolaurate, sorbitan monooleate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquiolate, sorbitandiolate, sorbitan fatty acid esters such as sorbitan triolate, mono- or diglycerides of fatty acids such as stearic acid monoglyceride, poly Oxyethylene sorbitan fatty acid ester, oxazoline derivative, imidazoline derivative, phosphate ester, fatty acid alkali metal salt or alkaline earth metal salt, primary, secondary or tertiary amine salt, etc., and these are one kind or two or more kinds. Used as a mixture of

Among these, a mixture of a sorbitol fatty acid ester and a sorbitan fatty acid ester is preferable from the viewpoint of emulsifying property at the time of emulsion formation and miniaturization of dispersed droplets. Particularly highly crystalline (solid at normal temperature), for example,
Sorbitan isostearate has good emulsifiability,
It is more preferable that the inorganic oxide is easily crystallized by the temperature drop. The proportion of these emulsifiers in the total composition is usually 10% by weight or less, preferably 0.1 to 5% by weight.
It is. Since an emulsion is once formed in the production process and then cooled to destroy the emulsion structure, the emulsifier is preferably smaller. If it exceeds 10% by weight, the viscosity of the W / O emulsion explosive becomes high, and the emulsion tends to be difficult to break. Further, since the oxygen balance becomes extremely negative, the power as an explosive tends to decrease.

Specific examples of the water-absorbing substance include starch-based water-absorbing polymers such as starch / polyacrylic acid graft copolymer and starch / polyacrylic acid sodium graft copolymer, and cellulose / polyacrylonitrile graft copolymer. Cellulose-based water-absorbing polymers such as hydrolysates, hydrolysates of suspension copolymers of partially saponified polyvinyl alcohol / vinyl acetate / methyl acrylate (polyvinyl alcohol / polyacrylic acid), crosslinked sodium polyacrylate and A synthetic polymer-based water-absorbing polymer such as a polyurethane resin is exemplified. Examples of the inorganic water-absorbing substance include bentonite and silica gel.

When a part of the crystallized particles of the inorganic oxide salt grows due to a temperature load or the like, pressure is applied to adjacent gelled particles (water-absorbing substance). In particular, when the explosive composition is cast into a container, the pressure is not released, so that an external pressure is always applied to the gelled particles. As a result, when the gelled particles release water without being able to maintain the absorbed water, the crystallized particles of the inorganic oxide salt grow in a short time, and the performance of the explosive is extremely reduced. Therefore, it is preferable that the gelled particles have a toughness that keeps absorbing water even when such pressure is applied. Specifically, it is preferable that the gelled particles swollen by water absorption have a gel strength of 10 ⁴ dyne / cm ² or more (card meter method).

Further, in order to keep the crystallized particles of the inorganic oxide salt stable, it is necessary to instantaneously absorb and hold the discharged water. Therefore, the water absorption rate of the water-absorbing substance is preferably high, and the water retention rate is 50% by weight or more when a centrifugal force of 500 G is applied to the gelled particles of the water-absorbing substance. Is preferred. In addition, since it is necessary to retain the water discharged for a long period of time, it is preferable that the water absorption capacity and the water retention capacity are not deteriorated with time.
In addition, since a small amount of the inorganic oxidized salt is dissolved in the discharged water, it is preferable that the water has a sufficient ability to absorb water even in the presence of such a salt.

From the viewpoints of toughness, water absorption rate, water retention ability and the like described in detail above, among the water-absorbing substances, a crosslinked product of sodium polyacrylate, a suspension of partially saponified polyvinyl alcohol / vinyl acetate / methyl acrylate. Hydrolysates of the copolymer (polyvinyl alcohol / polyacrylic acid) and polyurethane resins are preferred.

The shape of the water-absorbing substance may be any of powder, fiber, flake and the like. Also,
It is also preferable to make the particles porous and increase the surface area, since the water absorption rate increases. The size is not particularly limited as long as the object as the explosive composition or the cast explosive composition of the present invention can be achieved, but is preferably 0.1 to 5 mm, more preferably 0.2 to 3 mm. When the particle diameter exceeds 5 mm, water dispersed finely in the aggregate of the crystallized particles of the inorganic oxide coated with the organic fuel cannot be sufficiently absorbed, and conversely, when the particle diameter is less than 0.1 mm, the water is easily scattered. In addition, the miscibility at the time of production tends to be insufficient. The proportion of the water-absorbing substance in the whole composition is usually 0.1 to 10% by weight, preferably 1 to 3% by weight.
If it is less than 0.1% by weight, a sufficient water absorbing effect cannot be obtained,
Conversely, if it exceeds 10% by weight, the sensitivity and power of the explosive tend to decrease.

The function of the water-absorbing substance will be described in detail below.
Dispersed in the vicinity or aggregate of crystallized inorganic oxide salt coated with organic fuel, absorbs and retains discharged water, contacts water with inorganic oxide, and moves water in aggregate , And the initial particle shape can be maintained even after a temperature load is applied. It is for the following reasons. The explosive composition of the present invention has a structure in which a large number of particles, each of which is covered with a thin film of an organic liquid fuel, around crystallized fine inorganic oxide particles. The crystallized particles of the inorganic oxyacid salt are droplets of the mixture of the inorganic oxyacid salt and water when the emulsion is formed, but are crystallized by cooling. Is discharged around the crystallized particles. The discharged water is dispersed in the aggregate.

Since the solubility of the inorganic oxide in water varies depending on the temperature, the crystallized particles grow more and more as the dissolution and recrystallization of the inorganic oxide in water are repeated by the temperature load. In addition, the movement of water scattered due to the change in the particle shape is also a factor for increasing the particle diameter. That is, when the range of the temperature load during storage of the explosive composition is narrow, the toughness of the particles themselves can maintain the particle shape, but the range of the temperature load is wide, and when the temperature load is applied over a long period of time, The reason for this is that the water cannot be maintained in the particle shape, and water that has been scattered occurs. These factors cause a decrease in explosive performance, that is, sensitivity and energy as an explosive.

The explosive composition of the present invention has a temporary specific gravity of 0.8 to 0.8 due to micro hollow spheres added as necessary.
Adjusted to 1.5. Examples of the fine hollow spheres include inorganic fine hollow spheres obtained from glass, alumina, shale, shirasu, quartz sand, volcanic rock, sodium silicate, borax, perlite, obsidian, etc., and carbonaceous micro hollow obtained from pitch, coal, and the like. Sphere, phenolic resin, polyvinylidene chloride,
There are organic fine hollow spheres obtained from epoxy resin, urea resin, polystyrene, and the like, and the voids may be independent one by one or may be aggregates. These hollow microspheres are used as one kind or as a mixture of two or more kinds.
Further, the surface of the organic micro hollow sphere may be coated with a water repellent substance. Examples of the substance used for the coating include a low-molecular silane coupling agent, a high-molecular silane coupling agent, a fluorine-based surfactant, stearic acid, and a fluorine-containing methacrylate (or fluorine-containing acrylate) lubricant. No. The mixing ratio of the fine hollow spheres usually depends on the specific gravity of the fine hollow spheres used, but is usually 8% by weight or less, preferably 0.1 to 5% by weight, based on the total composition of the explosive composition.

The explosive composition according to the present invention may contain metal powders such as aluminum powder and magnesium powder, and organic powders such as wood powder and starch in order to increase the explosive power. The ratio is usually 5 for the explosive composition
0% by weight or less.

Next, a method for producing the explosive composition will be described. It consists of a step of forming a water-in-oil emulsion containing an inorganic oxidate, water and an organic liquid fuel, a step of mixing a water-absorbing substance and, if necessary, fine hollow spheres, metal powders and organic powders, and the like. Cooling and crystallizing the inorganic oxide. Specifically, first, a W / O emulsion is formed by rapidly stirring an aqueous solution of an inorganic oxide in an organic liquid fuel. The W / O emulsion has a structure in which a fine aqueous solution of an inorganic oxide is covered with a thin film of an organic liquid fuel, and a large number of such particles are aggregated. Thereafter, a water-absorbing substance and, if necessary, fine hollow spheres and the like are added, and the mixture is uniformly stirred and mixed by a pulverizer to obtain a W / O emulsion explosive.

This is poured into a mold at a high temperature, and then cooled by a cooling device capable of maintaining the temperature at room temperature or lower, preferably at -50 ° C. or lower, to crystallize the inorganic oxide in the dispersed phase. Thereby, the film covering the surface of the solidified inorganic oxide salt is also fixed at the same time. The lower the cooling temperature is, the more easily the crystal is precipitated, and it is preferable to set the ambient temperature to the temperature of liquid nitrogen (boiling point: -196 ° C), for example. The cooling time varies depending on the cooling temperature, but is preferably 10 minutes or less from the viewpoint of production efficiency. What is taken out of the mold becomes a cast explosive composition having a predetermined shape. In addition, the shape is not particularly limited,
For example, any of a columnar shape, a disk shape, a rectangular container, etc. may be used. Specifically, a pipe-shaped object having a diameter of 50 mm or a diameter of 1
m. The explosive composition also includes a form that can be appropriately pulverized into particles of about 1 to 5 mm and immediately loaded into a heavy bag or the like.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below with reference to embodiments. % Indicates% by weight. Example 1 76.9 parts by weight of ammonium nitrate, 4.8 parts by weight of sodium nitrate, and 4.8 parts by weight of hydrazine nitrate were added to 8.7 parts of water.
Dissolve by heating in addition to about 90 parts by weight.
To obtain an aqueous solution of an inorganic oxidate. On the other hand, 0.8 parts by weight of sorbitol monooleate and polyethylene wax (manufactured by Nippon Oil Co., Ltd., trade name: Nisseki Rexpol 1B, melting point 8)
(4 ° C., urea non-addition rate 0%, oil content 0%) and a mixture of 4.0 parts by weight were heated and melted to obtain an organic liquid fuel at about 90 ° C. The aqueous solution of these inorganic oxides and the organic liquid fuel were led to an emulsifying device to obtain a W / O emulsion.

The W / O emulsion has a true specific gravity of 0.
02, an acrylonitrile resin balloon having an average particle diameter of 60 μm (manufactured by Matsumoto Yushi Seiyaku Co., Ltd., trade name: F-80E)
D) 0.2 parts by weight and a crosslinked product of sodium polyacrylate (manufactured by Sumitomo Seika Co., Ltd., trade name: Aqua Keep 10SH-P,
(Particle size: 200 to 300 μm) and 3 parts by weight were added and mixed using a vertical mixer, to obtain a W / O emulsion explosive. Here, the gel strength of the water-absorbing substance that absorbed the 1% oxidizing agent aqueous solution was 3 × 10 ⁴ dyne / cm ² , which was sufficient in strength. This explosive composition was immediately poured into an iron chamber having an inner diameter of 40 mm and a length of 300 mm. The chamber was immersed in liquid nitrogen and frozen at -196 ° C for 10 minutes. Observation of the state after returning to room temperature revealed that the emulsion structure was broken and the inorganic oxide salt was crystallized. In addition, the average particle diameter was 5 to 10 μm, which was well uniform, and a state in which water was absorbed and retained in the crosslinked sodium polyacrylate was observed.

Then, at + 65.degree.
5 hours, 5 hours at -40 ° C, 2 hours each for temperature control during that time
After 15 cycles of a temperature load test in which a total of 24 hours was defined as one cycle, the shape of the explosive composition was observed. As a result, the particle size of the crystallized particles of the inorganic oxide salt coated with the organic liquid fuel remained at 5 to 10 μm, and no large growth of crystals was observed. Further, when a pentlight booster was brought into close contact with the surface of the explosive and detonated with a No. 6 electric detonator at −20 ° C., the whole detonated well. On the other hand, the sample before being subjected to the temperature load test and the detonation test was degassed with warm water in the following procedure. First, a chamber charged with explosives having a predetermined shape was immersed in warm water adjusted to a temperature of about 90 ° C., and left overnight. When the chamber was observed, it was confirmed that the explosive composition inside was eluted and had been removed.

Example 2 First, 74.2 parts by weight of ammonium nitrate, 4.8 parts by weight of sodium nitrate, and 9.8 parts by weight of hydrazine nitrate were added to 6.0 parts by weight of water and dissolved by heating. To obtain an aqueous solution of an inorganic oxidate. On the other hand, a mixture of 1.0 part by weight of sorbitol monooleate and 4.0 parts by weight of polyethylene wax (manufactured by China Essential Oil, trade name: MP-80, melting point 85 ° C., non-urea addition rate 0%, oil content 0%) was added. The mixture was heated and melted to obtain an organic liquid fuel at about 120 ° C. These inorganic oxyacid salt aqueous solution and organic liquid fuel were led to a small test emulsifying apparatus to obtain a W / O emulsion.

This W / O emulsion has a true specific gravity of 0.3.
25, 2.0 parts by weight of glass microballoons (manufactured by 3M, trade name: K25) having an average particle diameter of 60 μm and polyurethane resin (manufactured by Nisshinbo Co., Ltd., trade name: BioContact N, particle size: 1.5 mm) ) Was added and mixed using a vertical mixer, to obtain a W / O emulsion explosive. Here, the gel strength of the water-absorbing substance that absorbed the 1% oxidizing agent aqueous solution was 10 ⁵ dyne / cm ² , which was sufficient in strength. The performance of this explosive composition was evaluated in accordance with Example 1. As a result, good results were obtained as in Example 1.

Example 3 An explosive composition was obtained in the same manner as in Example 1 except that fine hollow spheres were not used. Here, the gel strength of the water-absorbing substance having absorbed the 1% oxidizing agent aqueous solution is 3 × 10 ⁴ dyne / cm ² ,
The strength was sufficient. When the performance of this explosive composition was evaluated in accordance with Example 1, the average particle size was maintained at a favorable state of 5 to 10 μm even after the temperature load test.

Comparative Example 1 An explosive composition was obtained according to Example 1, except that no water-absorbing substance was added. The obtained explosive was subjected to the same temperature load test as in Example 1. As a result, in 5 cycles, the discharged water was collected at the lower part of the chamber, and the particle size of the crystallized particles of the inorganic oxide was increased to 250 to 550 μm. Was growing. A pentolite booster was attached to the surface of the explosive, and when it was detonated with a No. 6 detonator at -20 ° C, no detonation occurred.

[0034]

Since the present invention is configured as follows, it has the following effects. Even when a wide temperature range is applied over a long period of time, the crystallized particles of the inorganic oxide salt coated with the organic liquid fuel do not grow and are stable, and the initial explosive performance can be maintained. I can do it. Also,
The particle diameter of the crystallized inorganic oxide is uniform, and while maintaining the energy as an explosive, the impact sensitivity of the explosive is appropriate and safety during handling can be improved. In addition, since the explosive composition before crystallization has fluidity, it can be molded into a predetermined shape by a molding die. Therefore, when used for land mines and mines, molding can be easily performed. In addition, the explosive in the container can be removed with hot water, so that disposal is easy. Further, according to the method for producing an explosive composition, it can be produced easily and in a stable state.

Claims (4)

[Claims] 1. An explosive comprising an inorganic oxide, water, an organic liquid fuel and a water-absorbing substance, wherein the inorganic oxide is crystallized, and the periphery of the crystallized particles is coated with an organic liquid fuel. Composition. 2. The method according to claim 1, further comprising micro hollow spheres.
An explosive composition according to claim 1. 3. A cast explosive composition obtained by molding the explosive composition according to claim 1 or 2 into a predetermined shape using a mold. 4. A step of mixing and emulsifying an inorganic oxyacid salt, water and an organic liquid fuel to form a water-in-oil emulsion, and mixing a water-absorbing substance and, if necessary, fine hollow spheres in the water-in-oil emulsion. A method for producing an explosive composition comprising: a step of cooling an admixture to room temperature or lower to crystallize an inorganic oxide.