A kind of preparation method of anti-caking expanded ammonium nitrate explosive

An expanded ammonium nitrate explosive and anti-caking technology, which is applied in the direction of explosives, offensive equipment, compressed gas generation, etc., can solve the problem of poor storage stability of expanded ammonium nitrate explosive charge, affecting detonation sensitivity and detonation velocity stability, and expansion Ammonium nitrate explosives are easy to agglomerate and other problems, and achieve the effects of low cost, stable detonation velocity and long storage period

Active Publication Date: 2021-03-02
湖北东神天神实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) Expanded ammonium nitrate explosives are very easy to agglomerate;
[0004] (2) The storage stability of the expanded ammonium nitrate explosive charge is not good
It has been well applied and practiced in production, but the puffed explosive still has a certain amount of agglomeration, which affects the detonation sensitivity and detonation velocity stability

Method used

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  • A kind of preparation method of anti-caking expanded ammonium nitrate explosive
  • A kind of preparation method of anti-caking expanded ammonium nitrate explosive
  • A kind of preparation method of anti-caking expanded ammonium nitrate explosive

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preparation example Construction

[0015] The invention provides a kind of preparation method of anti-caking expanded ammonium nitrate explosive, comprising the following steps:

[0016] Step S1. Add ammonia water with a concentration of 20-30% to the ammonium nitrate solution with a concentration of 90-91%, and adjust the pH value of the ammonium nitrate solution to remain at 7.5-8.5;

[0017] Step S2. Add 0.10-0.15 parts by weight of an expanding agent to 100 parts by weight of ammonium nitrate solution, and then heat and expand the ammonium nitrate solution to form powdered ammonium nitrate; specifically, heat the ammonium nitrate solution to 125-135° C. to form powder ammonium nitrate.

[0018] Step S3. Add powdered ammonium nitrate into the mixer, then add 4 parts by weight of dried wood powder, 4 parts by weight of oil phase material and 0.1 part by weight of quicklime powder;

[0019] Step S4. The mixture is cooled down, dehumidified, and then mixed to obtain expanded ammonium nitrate explosives. Speci...

Embodiment 1

[0024] The embodiment of the present invention provides a kind of preparation method of anti-caking expanded ammonium nitrate explosive, comprising the following steps:

[0025] Step S1. adding 20% ​​ammonia water into the 90% ammonium nitrate solution to adjust the pH of the ammonium nitrate solution to 7.5;

[0026] Step S2. Add 0.10 parts by weight of an expanding agent to 100 parts by weight of ammonium nitrate solution, and then heat and expand the ammonium nitrate solution to form powdered ammonium nitrate; specifically, heat the ammonium nitrate solution to 125° C. to form powdered ammonium nitrate. Specifically, the bulking agent is a mixture of 50% by mass of octadecylamine, 9% by mass of sodium lauryl sulfate, 31% by mass of paraffin wax and 10% by mass of microcrystalline wax.

[0027] Step S3. Add powdered ammonium nitrate into the mixer, then add 4 parts by weight of dried wood powder, 4 parts by weight of oil phase material and 0.1 weight part of quicklime powder...

Embodiment 2

[0030] The invention provides a kind of preparation method of anti-caking expanded ammonium nitrate explosive, comprising the following steps:

[0031] Step S1. In the ammonium nitrate solution with a concentration of 91%, add ammonia water with a concentration of 30%, and adjust the pH value of the ammonium nitrate solution to remain at 8.5;

[0032] Step S2. Add 0.15 parts by weight of an expanding agent to 100 parts by weight of ammonium nitrate solution, and then heat and expand the ammonium nitrate solution to form powdered ammonium nitrate; specifically, heat the ammonium nitrate solution to 125-135° C. to form powdered nitric acid Ammonium. Specifically, the bulking agent is a mixture of 50% by mass of octadecylamine, 9% by mass of sodium lauryl sulfate, 31% by mass of paraffin wax and 10% by mass of microcrystalline wax.

[0033] Step S3. Add powdered ammonium nitrate into the mixer, then add 4 parts by weight of dried wood powder, 4 parts by weight of oil phase mater...

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Abstract

The invention discloses a method for preparing an anti-caking puffed ammonium nitrate explosive and relates to the technical field of puffed ammonium nitrate explosives. The method comprises the following steps: S1, adding 20-30% ammonium hydroxide into a 90-91% ammonium nitrate solution, adjusting the pH value of the ammonium nitrate solution, and keeping the pH value to 7.5-8.5; S2, adding 0.10-0.15 part by weight of a puffing agent into 100 parts by weight of the ammonium nitrate solution, and heating and puffing the ammonium nitrate solution into powdery ammonium nitrate; S3, adding the powdery ammonium nitrate into a mixing machine, and adding 4 parts by weight of dried wood meal, 4 parts by weight of an oil phase material and 0.1 part by weight of quicklime powder; and S4, performingcooling and dehumidification on the mixture, and performing uniform mixing, so as to obtain the puffed ammonium nitrate explosive.

Description

technical field [0001] The invention relates to the technical field of expanded ammonium nitrate explosives, in particular to a preparation method of anti-caking expanded ammonium nitrate explosives. Background technique [0002] Existing expanded ammonium nitrate explosive has the following disadvantages in the production process: [0003] (1) Expanded ammonium nitrate explosives are very easy to agglomerate; [0004] (2) The storage stability of the expanded ammonium nitrate explosive charge is not good. Nanjing University of Science and Technology's article "Research on Anti-Agglomeration of Expanded Ammonium Nitrate Explosives on Full Continuous Production Line" studied the effects of surfactants, oil phase materials and wood flour moisture on the caking properties of expanded ammonium nitrate explosives on continuous production lines. The study found that surfactants, high melting point oil phase, and low moisture wood powder can reduce the caking property of explosiv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B31/30C06D5/10
CPCC06B31/30C06D5/10
Inventor 胡高林张政王俊
Owner 湖北东神天神实业有限公司
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