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A kind of high-power powdery ammonium nitrate explosive and its preparation process

An ammonium nitrate explosive and a technology for preparation process, which can be applied to explosives and other directions, can solve problems such as human toxicity and environmental pollution, and achieve the effects of low toxicity, simple formula and less toxic gas.

Inactive Publication Date: 2017-09-15
HONGDA MINING IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to serious hygroscopicity and agglomeration, the toxicity of the sensitizer TNT to the human body and the pollution to the environment, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1 Taking industrial production of 100 kg new high-power powdery ammonium nitrate explosive as an option, the selected components and mass ratio are: ammonium nitrate: 75 kg; wood flour: 5 kg; diaminooxadiazole: 20% , hydroxylamine hydrochloride, 144 kg; dicyanoamine 180 kg; sodium hydroxide 18kg.

[0018] Under above-mentioned components and proportioning, implementation steps are as follows:

[0019] The first step prepares diaminooxadiazole. Mix and dissolve hydroxylamine hydrochloride, sodium dicyanamide, and sodium hydroxide in ethanol in a constant temperature reactor at 50°C, stir for 6 h, filter, evaporate the ethanol, and dry the white solid at 70°C.

[0020] The second step is to use a drum dryer to dry the wood powder (set temperature at 120 ℃);

[0021] The third step is to use a ball mill to pulverize the diaminooxadiazole solid for 20 minutes, then add the dried wood powder and continue pulverizing and mixing for 10 minutes;

[0022] The fourth s...

Embodiment 2

[0026] Example 2 Also select 100 kg of new high-power powdery ammonium nitrate explosives for industrial production, the selected components and mass ratio are: ammonium nitrate: 85 kg; wood flour: 5 kg; diaminooxadiazole: 10% , hydroxylamine hydrochloride, 70 kg; dicyanoamine 90 kg; sodium hydroxide 25 kg.

[0027] Under above-mentioned components and proportioning, implementation steps are as follows:

[0028] The first step prepares diaminooxadiazole. Mix and dissolve hydroxylamine hydrochloride, sodium dicyanamide, and sodium hydroxide in ethanol in a constant temperature reactor at 50°C, stir for 6 h, filter, evaporate the ethanol, and dry the white solid at 70°C.

[0029] The second step is to use a drum dryer to dry the wood powder (set temperature at 120 ℃);

[0030] The third step is to use a ball mill to pulverize the diaminooxadiazole solid for 20 minutes, then add the dried wood powder and continue pulverizing and mixing for 10 minutes;

[0031] The fourth step ...

Embodiment 3

[0035] Example 3 Also select 100 kg of new high-power powdery ammonium nitrate explosives for industrial production, the selected components and mass ratio are: ammonium nitrate: 90 kg; wood powder: 5 kg, diaminooxadiazole: 5% , hydroxylamine hydrochloride, 35 kg; dicyanoamine 45 kg; sodium hydroxide 10 kg.

[0036] Under above-mentioned components and proportioning, implementation steps are as follows:

[0037] The first step prepares diaminooxadiazole. Mix and dissolve hydroxylamine hydrochloride, sodium dicyanamide, and sodium hydroxide in ethanol in a constant temperature reactor at 50°C, stir for 6 h, filter, evaporate the ethanol, and dry the white solid at 70°C.

[0038] The second step is to use a drum dryer to dry the wood powder (set temperature at 120 ℃);

[0039] The third step is to use a ball mill to pulverize the diaminooxadiazole solid for 20 minutes, then add the dried wood powder and continue pulverizing and mixing for 10 minutes;

[0040] The fourth step ...

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PUM

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Abstract

The invention relates to a high-power powdery ammonium nitrate explosive and its preparation process. The mass percentage of each component of the powdery ammonium nitrate explosive is: ammonium nitrate, 75-90%; wood powder, 5-10%; diamino Oxadiazole, 5.0-20%; the mass percentage of each component of diaminooxadiazole: hydroxylamine hydrochloride, 20-40%; sodium dicyanamide, 40-60%; sodium hydroxide, 5-20% . In the explosive, a high-power component, diaminooxadiazole, is added to the conventional powdered ammonium nitrate explosive. The beneficial effects of the present invention are: the formula of this novel high-power ammonium nitrate explosive is simple, the cost of raw materials is low, the production process is simple, it is suitable for continuous automatic production, and the explosive performance is more superior (detonation velocity 4500-5500 m / s, intensity 20 ~30 mm), and low toxicity, no carcinogens, and a certain quality of nitrogen gas (2‑6%) is produced after the explosion, compared with general ammonium nitrate explosives, which produce less nitrogen oxides and less toxic gases, so it is more Clean and safe.

Description

technical field [0001] The invention belongs to the technical field of industrial explosives, in particular to a high-power powdery ammonium nitrate explosive and a preparation process thereof. Background technique [0002] At present, powdery ammonium nitrate explosive is a powdery explosive mechanical mixture composed of ammonium nitrate as the main component and composed of oxidizer, combustibles and sensitizers. It is one of the widely used industrial explosives and has medium power and certain sensitivity. Spend. Under the action of external excitation energy, it can be transformed into a sensitive explosive for detonation. However, it has a strong ability to absorb moisture, and it is easy to agglomerate after absorbing moisture, resulting in a significant reduction in sensitivity and power, while producing toxic and harmful gases. [0003] In order to improve the sensitivity and power of powdered ammonium nitrate explosives, 7% to 20% elemental explosive TNT is usua...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B31/30
Inventor 王阳宋锦泉郑炳旭李战军刘翼
Owner HONGDA MINING IND
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