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Puffing ammonium nitrate explosive and preparation method thereof

The technology of expanding ammonium nitrate explosive and ammonium nitrate is applied in the directions of explosives processing equipment, explosives, explosive compound components, etc., which can solve the problems of unfavorable automatic production and production quota safety management, large toxic and harmful gases, high labor intensity, etc., and achieves explosive performance. The effect of better detonation performance, reduction of toxic and harmful gases, and reduction of labor intensity

Inactive Publication Date: 2017-05-31
FUJIAN HAIXIA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the explosives prepared from the above-mentioned ingredients have the following disadvantages: poor fluidity, low charge density, low detonation velocity and poor detonation transmission, and due to poor fluidity and low density, the labor intensity in the explosive production process is high, which is not conducive to automated production. And production capacity safety management, at the same time, the charge density is small, which is not conducive to charge charge in blasting engineering, and the amount of toxic and harmful gases generated during blasting is large, which is not conducive to environmental protection

Method used

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Examples

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preparation example Construction

[0022] The present invention also provides a kind of preparation method of expanded ammonium nitrate explosive, comprises the following steps:

[0023] Step 1: Add urea and an expanding agent to the liquid ammonium nitrate to dissolve, and control the dissolving temperature to 120-135°C to obtain a solution, wherein the weight ratio of liquid ammonium nitrate, urea and expanding agent is: 99.0-99.5 : 0.5~1.0 : 0.1~0.2;

[0024] Step 2: Swelling and crystallizing the solution obtained in step 1, and then crushing to obtain powder;

[0025] Step 3: Add diesel oil and wood powder to the powder obtained in step 2 to mix, then cool and sieve, and finally charge and pack to obtain expanded ammonium nitrate explosives, wherein the weight of diesel oil, wood powder and liquid ammonium nitrate is The ratio is 0.1-0.5:3-5:99.0-99.5.

[0026] As can be seen from the above description, the beneficial effects of the present invention are: (1) urea is used instead of sodium nitrate as the...

Embodiment 1

[0041] A preparation method for expanded ammonium nitrate, comprising the following steps:

[0042] Step 1: Add 0.5kg urea and 0.1kg portion of expanding agent to 99.0kg of liquid ammonium nitrate to dissolve, and control the temperature of dissolving to be 120°C to obtain a solution, wherein the expanding agent includes octadecylamine and acetic acid, the octadecylamine The weight ratio of amine and acetic acid is 60:40;

[0043] Step 2: The solution obtained in step 1 is sprayed evenly under the pressure condition of -0.065MPa for continuous expansion and crystallization for 9 minutes, and then the material after expansion and crystallization is crushed to a particle size of less than 0.85mm to obtain a powder;

[0044] Step 3: Add 0.1kg of diesel oil and 3kg of wood powder to the powder obtained in step 2 for mixing, then cool the mixed material to below 42°C naturally, and then sieve it with a 20-mesh sieve, and finally use a 20-mesh sieve The materials in the screen are ...

Embodiment 2

[0046] A preparation method for expanded ammonium nitrate, comprising the following steps:

[0047] Step 1: add 1.0kg urea and 0.2kg expanding agent to 99.5kg liquid ammonium nitrate and dissolve, and the temperature of controlling dissolving is 135 ℃, makes solution, and wherein expanding agent comprises octadecylamine and acetic acid, and described octadecylamine The weight ratio with acetic acid is 60:40;

[0048] Step 2: The solution obtained in step 1 is sprayed evenly under the pressure condition of -0.090MPa for continuous expansion and crystallization for 13 minutes, and then the material after expansion and crystallization is crushed to a particle size of less than 0.85mm to obtain a powder;

[0049] Step 3: Add 0.5kg of diesel oil and 5kg of wood powder to the powder obtained in step 2 for mixing, then naturally cool the mixed material to below 42°C, and then sieve it with a 20-mesh sieve, and finally use a 20-mesh sieve The materials in the screen are charged and p...

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Abstract

The invention relates to the technical field of explosive preparation and aims to provide a puffing ammonium nitrate explosive and a preparation method thereof. The puffing ammonium nitrate explosive is prepared from the following raw materials in parts by weight: 99.0-99.5 parts of ammonium nitrate, 0.5-1.0 part of urea, 0.1-0.5 part of diesel oil, 0.1-0.2 part of swelling agent and 3.0-5.0 parts of wood powder. According to the method, the urea is used as an oxidizing agent for replacing sodium nitrate and preparing the puffing ammonium nitrate explosive. The explosive preparation disclosed by the invention has the beneficial effects that the urea is used as the oxidizing agent and is used for replacing the ammonium nitrate in the explosive, so that the density and detonation velocity of the explosive can be increased, the explosion propagation performance is promoted, and meanwhile, the content of the toxic and harmful gas generated by the explosive explosion is reduced.

Description

technical field [0001] The invention relates to the technical field of explosive production, in particular to an expanded ammonium nitrate explosive and a preparation method thereof. Background technique [0002] Traditional expanded ammonium nitrate explosives are composed of ammonium nitrate, sodium nitrate, expanding agent, oil, wood powder, etc. However, the explosives prepared from the above-mentioned ingredients have the following disadvantages: poor fluidity, low charge density, low detonation velocity and poor detonation transmission, and due to poor fluidity and low density, the labor intensity in the explosive production process is high, which is not conducive to automated production. And production capacity safety management, at the same time, the charge density is small, which is not conducive to charge charge when blasting holes are charged in blasting engineering, and the amount of toxic and harmful gases produced during blasting is large, which is not conduciv...

Claims

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Application Information

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IPC IPC(8): C06B31/30C06B21/00
CPCC06B31/30C06B21/0008
Inventor 范道龙王庆土陈志贵揭荣军
Owner FUJIAN HAIXIA TECH
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