High-energy powder emulsified explosive and preparation method thereof

A powdery emulsified explosive, high-energy technology, applied in explosive processing equipment, explosives, offensive equipment, etc., can solve the problems of inconvenient storage and use, unsmooth production process, low working ability, etc., and achieve excellent water resistance , excellent explosive performance, and the effect of improving safety

Inactive Publication Date: 2007-10-03
NANJING UNIV OF SCI & TECH +1
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Problems solved by technology

The oxidant phase of this type of explosive contains (8-15)% water, so the working ability is small
And emulsion explosives are usually colloidal, which is not convenient for storage and use
Chinese patent ZL93117971.8 proposes a powdery emulsion explosive and its preparation method. In this method, the water phase and oil phase materials are first made into latex, and then the latex is made into powdery emulsion explosive by means of rotary flash evaporation, but due to Technical flaws failed to put into practice
The explosive has good explosive performance, but the formula is complicated, the cost is high, the production capacity is small, the energy consumption is large, the product density is small, and the production process is not smooth

Method used

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  • High-energy powder emulsified explosive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1 Taking the preparation of 500 kg of high-energy powdery emulsion explosive as an example, the mass percent of each component of the high-energy powdery emulsion explosive is selected as follows: 90 ammonium nitrate, 0.1 sodium dodecylsulfonate, 5 water, and composite wax 4. Polyisobutylene succinimide 0.9. Accurately weigh 450 kg of ammonium nitrate, 0.5 kg of sodium lauryl sulfonate, 25 kg of water, 20 kg of composite wax, and 4.5 kg of polyisobutylene succinimide according to the above proportioning ratio.

[0020] Operation steps: the first step is to heat and dissolve ammonium nitrate, sodium dodecylsulfonate and water and raise the temperature to 125°C; the second step is to heat and melt the composite wax and polyisobutylene succinimide and raise the temperature to 125°C; In three steps, the oxidant solution and combustible solution are mixed into a uniform mixture; in the fourth step, the mixture prepared in the third step is atomized through a three-fl...

Embodiment 2

[0021] Example 2 Taking the preparation of 500 kg of high-energy powdery emulsion explosive as an example, the mass percent of each component of the high-energy powdery emulsion explosive is selected as follows: 89% ammonium nitrate, 5% water, 4.8% composite wax, polyisobutylene succinimide 1.2. Accurately weigh 445 kilograms of ammonium nitrate, 25 kilograms of water, 24 kilograms of composite wax, and 6 kilograms of polyisobutylene succinimide according to the above proportioning ratio. The operating steps and test conditions are the same as in Example 1. The measured explosive performance is as follows: detonation velocity 4000m / s, intensity 16mm, working capacity 332ml, and detonation distance 16cm.

Embodiment 3

[0022] Example 3 Taking the preparation of 500 kg of high-energy powdery emulsion explosive as an example, the mass percentages of the components of the high-energy powdery emulsion explosive are: ammonium nitrate 88, octadecylamine 0.1, water 4, composite wax 4., SP -80 1.2, wood flour 2.7. Accurately weigh 440 kg of ammonium nitrate, 0.5 kg of stearylamine, 20 kg of water, 20 kg of composite wax, 6 kg of SP-80, and 13.5 kg of wood powder according to the above proportioning ratio.

[0023] Operation steps: the first step is to heat and dissolve ammonium nitrate, octadecylamine and water and raise the temperature to 130°C; the second step is to heat and melt the composite wax and SP-80 and raise the temperature to 125°C; Phase materials are mixed into a homogeneous mixture; in the fourth step, the mixture prepared in the third step is atomized through a pressure nozzle, and dried with hot air at 100°C while adding wood powder to form a high-energy powdery emulsion explosive; ...

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Abstract

A high-energy powdered emulsified explosive with high exploding power and low cost is proportionally prepared from ammonium nitrate, anti-caking agent, oil-phase material, combustible solid material, emulsifier and water through preparing oxidant solution, preparing combustible material solution, mixing, atomizing and drying.

Description

1. Technical field [0001] The invention relates to an explosive and a manufacturing method thereof, in particular to a high-energy powdery emulsion explosive and a manufacturing method thereof. 2. Background technology [0002] The usual powdery industrial explosives are solid mixtures, which have complex formulas, toxic ingredients, uneven mixing of oxidants and combustibles, low explosive performance, small production capacity, poor water resistance, difficult production in high temperature and high humidity seasons, and backward production technology . The current emulsion explosive is a water-in-oil type emulsion in which the oxidant phase is the dispersed phase and the organic fuel is the continuous phase. The oxidant phase of this type of explosive contains (8-15)% water, so the working ability is relatively small. Moreover, emulsion explosives are usually in a colloidal state, which is inconvenient for storage and use. Chinese patent ZL93117971.8 proposes a powdery...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B31/28C06B21/00
Inventor 倪欧琪张兴明唐双凌刘世坤王自军
Owner NANJING UNIV OF SCI & TECH
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