CN110343024A - A kind of outdoor type low density modified ammonium nitrate fuel explosive and preparation method - Google Patents
A kind of outdoor type low density modified ammonium nitrate fuel explosive and preparation method Download PDFInfo
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- CN110343024A CN110343024A CN201910685246.XA CN201910685246A CN110343024A CN 110343024 A CN110343024 A CN 110343024A CN 201910685246 A CN201910685246 A CN 201910685246A CN 110343024 A CN110343024 A CN 110343024A
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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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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
- C06B33/04—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide the material being an inorganic nitrogen-oxygen salt
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Abstract
The invention discloses a kind of outdoor type low density modified ammonium nitrate fuel explosive and preparation methods, and the raw material components weight percent for preparing explosive is ammonium nitrate: 84~92%；Ammonium nitrate modifier: 0.3~0.5%；Composite oil phase: 2~4%；Wood powder A:0~14%；Density adjuster B:0~5%；Wherein the density adjuster B by one or more of aluminium powder wrapped, anthracite carbon dust, moisture proof expansive Pearle, surfactant mixture；The wood powder A is the mixture of the soft wood powder of 60-70% and 30-40% hard wood powder；The present invention solves the problems such as modified ammonium nitrate-fuel oil explosive easily agglomerates, density is big, free-running property is poor, single hole explosive payload is big, under the premise of ensure that the stability and detonation property of product, reduces production cost, improves the level of security of work progress；Simultaneously the gradient performance of product should be increased with metaplasia production can be customized according to the property of rock and the demand of user.
Description
Technical field
The present invention relates to civil blast field of material technology more particularly to a kind of outdoor type low density modified ammonium nitrate fuel explosives
And preparation method.
Background technique
Modified ammonium nitrate-fuel oil explosive is a kind of commercial explosive for being widely used in blasting engineering operation, it is advantageous that production technology
Simply, raw material cost is low, and easy to use.But modified ammonium nitrate-fuel oil explosive water-resistance is poor, easily agglomeration is wandering during storage
Property is poor, influences the stability of explosive；In use since product itself density causes greatly linear meter(lin.m.) explosive payload big, while by
Cause the degree of packing of blasthole bottom big in top-down charging means, or even will appear phenomenon of miss-firing；And since density is big
Single hole charge is caused to increase, user cost increases.
In order to solve the problems, such as that modified ammonium nitrate-fuel oil explosive density is big, proposed in Chinese patent CN101955402A invention
A kind of low-density powdery modified ammonium nitrate fuel oil explosive, this kind of explosive be increased in normal modified ammonium oil product wood powder ratio and
Perlite is added to reduce modified ammonium nitrate-fuel oil explosive density.But this explosive still has deficiency: one, product water repelling property is paid no attention to
Think, cannot be applied in the blasthole for having water, limits the scope of application of product；Two, product density decline range is insufficient, causes to produce
Degree of packing of the product in blasthole is high, and linear meter(lin.m.) explosive payload increases, and user cost increases；Three, properties of product gradient is insufficient, no
It can accomplish that the product for different type rock selection different performance carries out explosion completely.
Summary of the invention
In view of the foregoing drawbacks or insufficient, the purpose of the present invention is to provide a kind of outdoor type low density modified ammonium nitrate fuel explosives
And preparation method.
To achieve the above objectives, the technical solution of the present invention is as follows: a kind of outdoor type low density modified ammonium nitrate fuel explosive, preparation
The raw material components weight percent of explosive is ammonium nitrate: 84~92%；Composite oil phase: 2~4%；Wood powder A:0~14%；It is close
Regulator B:0~5% is spent, the sum of the above components content percentage is equal to 100%, additionally includes ammonium nitrate modifier:
0.3~0.5%；Wherein the density adjuster B is aluminium powder wrapped, anthracite carbon dust, moisture proof expansive Pearle, table
One or more of mixtures of face activating agent；The wood powder A is the mixture of soft wood powder and hard wood powder.
The weight percentages of components of the wood powder A is 60%~70% soft wood powder, 30%~40% hard wood powder；Institute
The bulk density for stating wood powder A is 0.20-0.23g/cm3, and fineness is 40~100 meshes.
The weight percentages of components of the density adjuster B is aluminium powder wrapped: 10~20%, anthracite carbon dust: 30
~40%, moisture proof expansive Pearle: 60~85%, surfactant: 5~20%, the sum of each component content percentage is equal to
100%.
The aluminium powder fineness wrapped are as follows: 325~400 meshes；Anthracite carbon dust fineness are as follows: 200~270 meshes；Hydrophobic
Type expanded perlite granularity are as follows: 4~100 meshes.
The preparation method of the outdoor type low density modified ammonium nitrate fuel explosive, includes the following steps:
Step 1: after being mixed after ammonium nitrate is broken with modifying agent 40-60 DEG C at a temperature of into I and II cam powder
Broken machine；
Step 2: dry through hot-air flow；
Step 3: cooling down through conveyor screw, after reducing the temperature of modified ammonium nitrate, is transported to ball mill and is added one
Body carburetion is mutually mixed；
Step 4: wood powder A is added through conveyor screw to sieving medicine in ball mill discharging mouth under the conditions of 65-70 DEG C of drop temperature
Machine continuess to mix；
Step 5: density adjuster B is added in medicine screening apparatus discharge port, is mixed in conveyor screw, after mixing
It is packed through automatic packaging machine.
The preparation method of the outdoor type low density modified ammonium nitrate fuel explosive, in step 2, hot-air flow drying temperature is
100—140℃；In step 3, after cooling, modified ammonium nitrate temperature≤100 DEG C, then mixed；In step 5, modified ammonium
Behind medicine temperature≤50 DEG C of fried medicine after mixing, then packed.
Compared with the prior art, the invention has the benefit that
The present invention provides a kind of outdoor type low density modified ammonium nitrate fuel explosive and preparation method is adopted in modified ammonium nitrate-fuel oil explosive
The improvement wood powder A mixed with soft wood powder and hard wood powder, increases granular sensation, the porous body of traditional wood powder, has more
The free-running property of explosive is easily stored and be conducive to strong hygroscopicity and laxity, improves the easily agglomeration of modified ammonium nitrate-fuel oil explosive water-resistance difference
The problem of, meanwhile, wood powder A is flammable reducing agent, increases the insensitiveness of powder type explosive, is conducive to control blow-up rates, extend
The blasting time of explosive, improve work progress level of security；Density adjuster B is introduced in modified ammonium nitrate-fuel oil explosive, it can
The hygroscopicity of ammonium nitrate is reduced, explosive is solved and easily agglomerates, quality of explosive is unstable, is not easy to the problem of storing；It reduces simultaneously
The bulk density of explosive is conducive to the free-running property of explosive, solves the problems, such as that degree of packing dispersion is non-uniform, reduces powder charge raw material
Cost.
Preparation method feature of the present invention is: 1, first mutually carrying out modified ammonium nitrate in the ball mill with oily, can make oil
Modified ammonium nitrate is mutually sufficiently wrapped up, wood powder oil suction can also be avoided, enhances adjusting of the wood powder to product density；2, by wood powder and close
The addition port of degree adjustment B separates, convenient for the quality control to product；3, density adjuster B addition port is placed in cool sieve
After machine, loss of the cool screen(ing) machine to density adjuster B can have both been reduced, the conveyor screw of medicine of a cold nature process long range can also be utilized
It is adequately mixed, reduces the addition of mixing arrangement.
Inventive formulation and preparation method can according to user demand (such as: local formation hardness；To product density
Requirement etc.) carry out and customize production, by reaching to wood powder A with density adjuster B adding proportion difference, to reduce product close
Degree reduces single hole explosive payload, reduces user's dosage while being optimal demolition effect, increases the gradient of product
Performance；The formula solves the problems such as modified ammonium nitrate-fuel oil explosive agglomeration and poor free-running property simultaneously, guarantees the stabilization of product convenient for storage
Property, production cost is reduced, while improving work progress level of security.
Specific embodiment
Below by the present invention will be described in detail, it is clear that described embodiment is only that present invention a part is implemented
Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creation
Property labour under the premise of every other embodiment obtained, belong to protection scope of the present invention.
A kind of outdoor type low density modified ammonium nitrate fuel explosive, the raw material components weight percent for preparing explosive is ammonium nitrate:
84~92%；Composite oil phase: 2~4%；Wood powder A:0~14%；Density adjuster B:0~5%, the above components content percentage
The sum of number is equal to 100%, in addition, being additionally added ammonium nitrate modifier by specific gravity: 0.3~0.5% (this weight percent is not
It is included in the sum of above-mentioned each component content percentage)；Wherein the density adjuster B be aluminium powder wrapped, anthracite carbon dust,
One or more of mixtures of moisture proof expansive Pearle, (hydrophobic type surfactant)；The wood powder A is soft wood
The mixture of powder and hard wood powder.
The weight percentages of components of the wood powder A is 60%~70% soft wood powder, 30%~40% hard wood powder；Institute
The bulk density for stating wood powder A is 0.20-0.23g/cm3, and fineness is 40~100 meshes, specifically, fineness in the mixing of wood powder A
It is required that being: it is 90~96% that the sieving for crossing 40 meshes, which is considered, while crossing sieving rate≤20% of 100 meshes.By soft in the present invention
The wood powder A that wood powder and hard wood powder mix, wherein soft wood wood powder density is small, wood powder fluffy degree is fine, can play compared with
Good Auto-regulating System of Density of Heavy Medium effect；Lignum vitae wood powder has biggish specific surface area and pore volume, can play in modified ammonium nitrate-fuel oil explosive
Good sensibilization.Improve the problem of modified ammonium nitrate-fuel oil explosive difference is easily agglomerated, reduces the bulk density of explosive, improve explosive
Free-running property.
Therefore, the wood powder A that soft wood powder and hard wood powder mix increases the granular sensation, porous of traditional wood powder
Body has stronger hygroscopicity and laxity, easily stores and be conducive to the free-running property of explosive, improves modified ammonium nitrate-fuel oil explosive water resistant
Property difference easily agglomeration the problem of, reduce the bulk density of explosive, improve the free-running property of explosive；Wood powder A is flammable reduction simultaneously
Agent increases the insensitiveness of powder type explosive, controls blow-up rates, extends the blasting time of explosive, improves work progress safety
It is horizontal.
The weight percentages of components of the density adjuster B is aluminium powder wrapped: 10~20%, anthracite carbon dust: 30
~40%, moisture proof expansive Pearle: 60~85%, surfactant: 5~20%, the sum of each component content percentage is equal to
100%；It of surfactant in the present invention in density adjuster B has special amphiphilic structure, can reduce oily phase material
The surface tension of material, improve oil phase material dispersibility and avoid oil mutually formation continuous phase, solution due to the effect between oily phase
Power and the problem of influence product free-running property, and the surfactant that appropriate amount is added can significantly improve the sensitivity of explosive, do
Work ability and explosion velocity.And the hygroscopicity of ammonium nitrate is effectively reduced in the hydrophobic group in surfactant, is beneficial to modified ammonium oil
The free-running property of explosive.
Moisture proof expansive Pearle in the present invention in density adjuster B is nontoxic, tasteless, environmental protection, lightweight, and fire prevention is prevented
It is damp, corrosion-resistant；For the porous hollow particle of 0.15~1.5mm of particle diameter, there is low bulk density, in 0.05-0.20g/cm3
Between, main component is SiO2And Al2O3Chemical property is stablized, smaller on the oxygen balance influence of modified ammonium oil, and it has
There is low water absorption, the water absorption rate of hydrophobic expansion pearlite is less than 10%.Moisture proof expansive Pearle can reduce the accumulation of explosive
Density solves explosive and easily agglomerates, and is unfavorable for storing and unstable product quality, problem at high cost.
Aluminium powder and anthracite carbon dust wrapped is the performance in order to stablize explosive in density adjuster B in the present invention.Wherein
Aluminium powder wrapped can reduce its flammability in air than traditional aluminium powder, and the granular sensations such as safety, inoxidizability are eager to excel,
Be conducive to the free-running property of explosive.Wherein anthracite carbon dust is compared with common coal powder, and when storage is not easy spontaneous combustion, safer, and
And phosphorus content is higher, ash content is few, and with full combustion, cigarette is few after explosion, not only more environmentally-friendly when can also reduce bursting work
Between.
Therefore, the surfactant and moisture proof expansive Pearle of density adjuster B, is effectively reduced the moisture absorption of ammonium nitrate
Property, it is beneficial to the free-running property of modified ammonium nitrate-fuel oil explosive, reduces the bulk density of explosive, solving explosive easily agglomerates, and is unfavorable for storing
It deposits and unstable product quality, problem at high cost；Aluminium powder and anthracite carbon dust wrapped in order to stablize the performance of explosive,
Wherein aluminium powder wrapped is eager to excel than traditional aluminum particle sense, is conducive to the free-running property of explosive.
Further, the aluminium powder fineness wrapped are as follows: 325~400 meshes, specific requirement is: fineness is 325 mesh
Sieve sieving rate 95~99% and 400 mesh sieve rate≤2%, the aluminium powder that purity is 99.99%；Anthracite carbon dust fineness are as follows:
200~270 meshes, specific requirement is: the sieving rate 95~99% of 200 mesh of fineness and 270 mesh sieve rate≤2%, hair
Heat >=7000 kilocalories, ash content, moisture≤5%；Moisture proof expansive Pearle granularity are as follows: 4~100, specific requirement is: choosing
With bulk density≤0.10g/cm3,100 mesh sieve rate≤2% of granularity and 4 mesh sieve rate >=98%, moisture≤2%.
The preparation method of outdoor type low density modified ammonium nitrate fuel explosive, includes the following steps:
1), step 1: after being mixed after ammonium nitrate is broken with modifying agent 40-60 DEG C at a temperature of into I and II cam
Pulverizer；
2), step 2: dry through 100-140 DEG C of hot-air flows；
3), step 3: ball milling is transported to after reducing the temperature of modified ammonium nitrate by temperature≤100 DEG C through conveyor screw
Machine is simultaneously added integrated oil and is mutually mixed；
4), step 4: wood powder A is added through conveyor screw to sieve in ball mill discharging mouth under the conditions of 65-70 DEG C of drop temperature
Medicine machine continuess to mix；
5) step 5: density adjuster B is added in medicine screening apparatus discharge port, is mixed, is uniformly mixed in conveyor screw
And medicine is packed behind temperature≤50 DEG C through automatic packaging machine.
The present invention has the advantages that 1, first by modified ammonium nitrate and oil mutually carry out in the ball mill, can make oil it is mutually abundant
Modified ammonium nitrate is wrapped up, wood powder oil suction can also be avoided, enhances adjusting of the wood powder to product density；2, by wood powder and density adjustment B
Addition port separate, convenient for product quality control；3, after density adjuster B addition port being placed in medicine screening apparatus, both
Loss of the medicine screening apparatus to density adjuster B can be reduced, can also be carried out using the conveyor screw of medicine of a cold nature process long range abundant
Mixing, reduce the addition of mixing arrangement.
Inventive formulation and production method can according to user demand (such as: local formation hardness；To product density
Requirement etc.) carry out and customize production, by reaching to wood powder A with density adjuster B adding proportion difference, to reduce product close
Degree reduces single hole explosive payload, reduces user's dosage while being optimal demolition effect, while the formula solves
The problems such as modified ammonium oil agglomeration and poor free-running property, improve work progress level of security.
Comparative example:
Embodiment 1: taking ammonium nitrate 92%, ammonium nitrate modifier 0.3% (additional), integrated oil phase 3%, wood powder A5%,
Low density modified ammonium nitrate fuel explosive can be prepared by using above-mentioned modified ammonium nitrate-fuel oil explosive preparation process production.
Embodiment 2: ammonium nitrate 85%, ammonium nitrate modifier 0.3% (additional), integrated oil phase 3%, wood powder are taken
A12% can be prepared by low density modified ammonium nitrate fuel explosive using above-mentioned modified ammonium nitrate-fuel oil explosive preparation process production.
Embodiment 3: ammonium nitrate 84%, ammonium nitrate modifier 0.3% (additional), integrated oil phase 3%, wood powder are taken
A12%, moisture proof expansive Pearle 1% can be prepared by low density modified using above-mentioned modified ammonium nitrate-fuel oil explosive preparation process production
Ammonium nitrate-fuel oil mixture.
Embodiment 4: ammonium nitrate 84%, ammonium nitrate modifier 0.3% (additional), integrated oil phase 3%, wood powder are taken
A11.8%, moisture proof expansive Pearle 1%, hydrophobic type surfactant 0.2% prepare work using above-mentioned modified ammonium nitrate-fuel oil explosive
Skill production can be prepared by low density modified ammonium nitrate fuel explosive.
Embodiment 5: ammonium nitrate 84%, ammonium nitrate modifier 0.3% (additional), integrated oil phase 3%, wood powder are taken
A11.3%, moisture proof expansive Pearle 1%, hydrophobic type surfactant 0.2%, anthracite carbon dust 0.5% are changed using above-mentioned
Property ammonium nitrate-fuel oil mixture preparation process production can be prepared by low density modified ammonium nitrate fuel explosive.
Embodiment 6: ammonium nitrate 84%, ammonium nitrate modifier 0.3% (additional), integrated oil phase 3%, wood powder are taken
A11%, density adjuster B2% (moisture proof expansive Pearle 1%, hydrophobic type surfactant 0.2%, anthracite carbon dust
0.5%, aluminium powder 0.3% wrapped), low density modified ammonium can be prepared by using above-mentioned modified ammonium nitrate-fuel oil explosive preparation process production
Fried medicine.
Each example performance contrast table is as follows:
| Formula | Explosion velocity (m/s) | Natural deposited dry density (g/cm3) | Gap distance (cm) | Storage time (day) |
| Example 1 | 3150 | 0.64 | 5 | 180 |
| Example 2 | 2800 | 0.58 | 4 | 190 |
| Example 3 | 2851 | 0.57 | 4 | 210 |
| Example 4 | 2900 | 0.565 | 4 | 230 |
| Example 5 | 2942 | 0.55 | 5 | 240 |
| Example 6 | 3012 | 0.52 | 5 | 260 |
By comparison example it is found that although embodiment 1 ensure that demolition effect, the large bulk density of explosive, free-running property
Can be bad, it can thus be appreciated that the water repelling property of the formula explosive, anti-moisture absorption effect are bad, cause explosive easily to agglomerate, storage time
It is short, it is unfavorable for storing；Large bulk density, degree of packing is big, and raw material dosage is big, and blasting cost is high；
Embodiment 2 and example 1 compare, and explosion velocity is low, and work progress security risk is low, and the bulk density of explosive is also declined,
Be conducive to the free-running property of explosive, storage time also improves, but gap distance becomes smaller, it is possible to phenomenon of miss-firing occurs；Thus may be used
Know, a certain amount of wood powder A can adjust the detonation insensitiveness of powder type explosive, control blow-up rates, while can also reduce the heap of explosive
Product density, advantageously reduces the degree of packing and free-running property of explosive.
Embodiment 3 and example 2 compare, and explosion velocity improves, and storage time improves 16%, and the bulk density of explosive decreases；
Its gap distance becomes smaller compared with example 1, it is also possible to phenomenon of miss-firing occurs；It follows that moisture proof expansive Pearle, energy
The storage stability for enough extending explosive, maintains explosive property to stablize.
Embodiment 4 and example 3 compare, and explosion velocity improves, and storage time improves 14%, it follows that hydrophobic type surface-active
Agent can be effectively reduced the hygroscopicity of ammonium nitrate, improve the water-resistance of explosive, be conducive to the free-running property of explosive, and it is close to solve powder charge
Degree disperses non-uniform problem, reduces powder charge cost of material, avoids water resistance of explosive insufficient, easily agglomerates, quality of explosive is unstable
It is fixed, it is unfavorable for storing.
Embodiment 5 and example 4 compare, and explosion velocity improves, and storage time improves 5%, and density reduces, it follows that carbon dust
It uses, can effectively maintain explosive property to stablize, and be conducive to the free-running property of explosive.
Embodiment 6 is compared with above 5, and explosion velocity is more stable, and bulk density is small, and induced detonation range is big, storage time
It is long；It follows that a certain amount of wood powder A can adjust the detonation insensitiveness of powder type explosive, blow-up rates are controlled；Density adjuster B
It can reduce the hygroscopicity of ammonium nitrate, solve explosive and easily agglomerate, quality of explosive is unstable, is not easy to the problem of storing；It reduces fried
The bulk density of medicine is conducive to the free-running property of explosive, solve the problems, such as degree of packing dispersion it is non-uniform, reduce powder charge raw material at
This；Therefore, the formula explosive of embodiment 6, explosion velocity can be adjusted flexibly according to construction geographical environment, that is, ensure that the detonation of explosive
Power also ensures work progress safety；It also can solve explosive easily to agglomerate, quality of explosive is unstable, is not easy to asking for storage
Topic；The bulk density for reducing explosive simultaneously, is conducive to the free-running property of explosive, solves the problems, such as that degree of packing dispersion is non-uniform, subtracts
Few powder charge cost of material.
It is obvious to a person skilled in the art that will appreciate that above-mentioned Concrete facts example is preferred side of the invention
Case, therefore improvement, the variation that those skilled in the art may make certain parts in the present invention, embodiment are still
The principle of the present invention, realization is still the purpose of the present invention, belongs to the range that the present invention is protected.
Claims (6)
1. a kind of outdoor type low density modified ammonium nitrate fuel explosive, which is characterized in that the raw material components weight percent for preparing explosive is,
Ammonium nitrate: 84~92%；Composite oil phase: 2~4%；Wood powder A:0~14%；Density adjuster B:0~5%, the above components contain
It measures the sum of percentage and is equal to 100%, additionally include ammonium nitrate modifier: 0.3~0.5%；The wherein density adjuster B
For the mixtures of the one or more of aluminium powder wrapped, anthracite carbon dust, moisture proof expansive Pearle, surfactant；It is described
Wood powder A be soft wood powder and hard wood powder mixture.
2. outdoor type low density modified ammonium nitrate fuel explosive according to claim 1, it is characterised in that the component weight of the wood powder A
Measuring percentage is 60%~70% soft wood powder, 30%~40% hard wood powder；The bulk density of the wood powder A is 0.20-
0.23g/cm3, fineness is 40~100 meshes.
3. outdoor type low density modified ammonium nitrate fuel explosive according to claim 1, it is characterised in that the density adjuster B's
Weight percentages of components is aluminium powder wrapped: 10~20%, anthracite carbon dust: 30~40%, moisture proof expansive Pearle: 60
~85%, surfactant: 5~20%, the sum of each component content percentage is equal to 100%.
4. outdoor type low density modified ammonium nitrate fuel explosive according to claim 1, it is characterised in that aluminium powder fineness wrapped are as follows:
325~400 meshes；Anthracite carbon dust fineness are as follows: 200~270 meshes；Moisture proof expansive Pearle granularity are as follows: 4~100 meshes.
5. the preparation method of outdoor type low density modified ammonium nitrate fuel explosive according to claim 1, which is characterized in that including as follows
Step:
1) step 1: after mix after ammonium nitrate is broken with modifying agent 40-60 DEG C at a temperature of into the crushing of I and II cam
Machine；
2), step 2: dry through hot-air flow；
3), step 3: cooling down through conveyor screw, after reducing the temperature of modified ammonium nitrate, is transported to ball mill and one is added
Carburetion is mutually mixed；
4), step 4: wood powder A is added through conveyor screw to medicine screening apparatus in ball mill discharging mouth under the conditions of 65-70 DEG C of drop temperature
It continuess to mix；
5), step 5: density adjuster B is added in medicine screening apparatus discharge port, is mixed in conveyor screw, is passed through after being uniformly mixed
Automatic packaging machine is packed.
6. the preparation method of outdoor type low density modified ammonium nitrate fuel explosive according to claim 5, which is characterized in that the step
In two, hot-air flow drying temperature is 100-140 DEG C；In step 3, after cooling, modified ammonium nitrate temperature≤100 DEG C, then into
Row mixing；In step 5, behind medicine temperature≤50 DEG C of modified ammonium nitrate-fuel oil explosive after mixing, then packed.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3164503A (en) * | 1963-05-13 | 1965-01-05 | Atlas Chem Ind | Aqueous emulsified ammonium nitrate blasting agents containing nitric acid |
| CN101544524A (en) * | 2009-05-13 | 2009-09-30 | 北京星宇惠龙科技发展有限责任公司 | Anfo explosive and manufacturing method thereof |
| CN103058801A (en) * | 2013-02-04 | 2013-04-24 | 辽宁红山化工股份有限公司 | Modified ammonium nitrate-fuel oil explosive for explosive welding and preparation method of modified ammonium nitrate-fuel oil explosive |
| CN107721780A (en) * | 2017-11-17 | 2018-02-23 | 陕西红旗民爆集团股份有限公司 | A kind of Explosion composite powder type explosive density adjuster and preparation method |
-
2019
- 2019-07-27 CN CN201910685246.XA patent/CN110343024A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3164503A (en) * | 1963-05-13 | 1965-01-05 | Atlas Chem Ind | Aqueous emulsified ammonium nitrate blasting agents containing nitric acid |
| CN101544524A (en) * | 2009-05-13 | 2009-09-30 | 北京星宇惠龙科技发展有限责任公司 | Anfo explosive and manufacturing method thereof |
| CN103058801A (en) * | 2013-02-04 | 2013-04-24 | 辽宁红山化工股份有限公司 | Modified ammonium nitrate-fuel oil explosive for explosive welding and preparation method of modified ammonium nitrate-fuel oil explosive |
| CN107721780A (en) * | 2017-11-17 | 2018-02-23 | 陕西红旗民爆集团股份有限公司 | A kind of Explosion composite powder type explosive density adjuster and preparation method |
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