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Water-resisting modified ammonium nitrate fuel oil explosive and preparation method thereof

A technology of ammonium oil explosives and water-resistant modification, which is applied in the direction of explosives, etc. It can solve the problems that the moisture-proof agglomeration of explosives has not been completely solved, the water-resistant ability of explosives has not been significantly improved, and the detonation performance of explosives has rapidly decayed. Explosive sensitivity, good storage stability and explosive performance, excellent moisture-proof and anti-caking effects

Inactive Publication Date: 2013-09-11
HUNAN SHINEHOOD GRP NO 169 CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the modified ammonium oil explosives produced by the above-mentioned various methods utilize the principle of surface activity and rely on different technical approaches to modify ammonium nitrate, and make the composite oil phase form on the surface of the modified ammonium nitrate through various technical measures. The strength of the oil film and the coating condition have been greatly improved, but the moisture-proof agglomeration problem of the explosive has not been completely solved, and the water resistance of the explosive has not been significantly improved.
[0004] According to Chinese patent CN1468832A, a modified powdery ammonium nitrate explosive and its manufacturing method, the modified ammonium oil explosive produced basically has no water resistance, and the modified ammonium nitrate is dense and solid, resulting in a relatively high density of the explosive, resulting in Explosion transmission performance attenuates quickly, and there is a common phenomenon of rejection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037] 1. Preparation of water-resistant composite oil phase

[0038] The composition and mass fraction of the water-resistant composite oil phase are: hydrogenated vegetable fatty acid: 25%; plant extract: 30%; vegetable oil: 8%; decompression wax ointment: 35%; surfactant: 2% . The preparation process steps are as follows: first heat the various components in a separate melting tank to 70-80°C, and then pump the components into the reaction kettle at one time through an oil pump and electronic scale according to the proportion requirements of the mass fraction. Stirring, filtering, filling.

[0039] Preparation of high-performance modifiers

[0040] The components and mass fractions of the high-performance modified ammonium nitrate additive are: octadecylamine sulfate: 70%; sodium stearate: 15%; dispersant F: 5%; clay: 10%. The preparation process steps are as follows: first bake the above-mentioned various materials at 90°C until the water content is ≤1.5%, wait for the ...

Embodiment 1

[0045] ① Formula: ammonium nitrate: 90.5%; wood powder: 4.5%; water-resistant composite oil phase: 4.0%; density regulator: 1.0%; high-performance modified ammonium nitrate additive: 0.3% (additional);

[0046] ②Implementation time: from March 2008 to April 2008;

[0047] ③ Continuous implementation output: 150t;

[0048] ④Implementation effect and measured performance indicators: detonation velocity 3500-3800m / s; detonation 4-6cm, 3-4cm after immersion in water; sharpness 14-16mm; cartridge density 0.98-1.07g / cm3; cartridge moisture 0.10-0.25 %; drug state: loose and easy to charge; the storage is stable for more than 8 months, and the index basically does not decay.

Embodiment 2

[0050] ① Formula: ammonium nitrate: 90.0%; wood powder: 5.0%; water-resistant composite oil phase: 4.0%; density regulator: 1.0%; high-performance modified ammonium nitrate additive: 0.3% (additional);

[0051] ②Implementation time: from May 2008 to June 2008;

[0052] ③ Continuous implementation output: 400t;

[0053] ④Implementation effect and measured performance indicators: detonation velocity 3600-4000m / s; detonation 4-6cm, 3-4cm after immersion in water; sharpness 14-16mm; cartridge density 0.95-1.05g / cm3; cartridge moisture 0.10-0.20 %; Detonation continuity test: Fifteen ∮32 charge rolls were placed straight one by one in the air, one end was detonated with a No. 8 detonator, and all detonated. 3564m / s; drug state: loose and easy to charge; the storage is stable for more than 8 months, and the index basically does not decay.

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Abstract

The invention relates to a preparation technology of a water-resisting modified ammonium nitrate fuel oil (ANFO) explosive, and provides a preparation technology of a non-TNT high-performance powdery ANFO explosive with high physical and chemical properties of functional powder. According to the invention, a mechanical force chemical modification technological mode is adopted. Good water resistance is provided for the explosive through the addition of a water-resisting composite oil phase rich in hydrophobic factors. The density of the explosive is reasonably regulated through the addition of a density regulator. Therefore, good detonation sensitivity and detonating transfer performance are provided for the explosive. Compared to prior arts, the water-resisting modified ANFO explosive prepared with the technology provided by the invention is characterized by reasonable and advanced formulation. The explosive is safe and reliable, and has good damp proofing, agglomeration resisting, water resisting, and explosion performances. Therefore, the explosive is suitable for industrialized productions.

Description

technical field [0001] The invention relates to a modified ammonium oil explosive used in blasting engineering and a preparation method thereof, in particular to a water-resistant modified ammonium oil explosive and a preparation method thereof. Background technique [0002] Powdered ammonium nitrate explosives mainly include ammonium oil explosives and ammonium ladder explosives. Ammonium oil explosives are usually mixed with ammonium nitrate and diesel oil, while ammonium ladder explosives contain 10-20% TNT as a sensitizer, and their explosive performance is significantly better than that of ammonium oil explosives. However, TNT is poisonous, polluting, and costly. Production safety; ammonium oil explosives have low cost and simple production process, but have a series of defects such as low detonation sensitivity, poor explosive performance, easy oil leakage and deterioration, and unfavorable storage. At the same time, the two types of explosives are easy to absorb and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B31/28
Inventor 刘士兵
Owner HUNAN SHINEHOOD GRP NO 169 CHEM IND
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