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Sensitizing method of emulsified explosive and gas flow nozzle used

A technology of airflow nozzles and emulsion explosives, applied in explosives, explosives processing equipment, injection devices, etc., can solve the problems of small output, low efficiency, and rising product costs, and achieve the effects of large output, good storage, and high efficiency

Inactive Publication Date: 2003-11-05
倪欧琪 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Physical sensitization requires mixing microporous materials such as glass microspheres or expanded perlite into the emulsification matrix, but the price of glass microspheres is too high, resulting in a substantial increase in product costs, while the sensitization effect of expanded perlite is poor
Chemical sensitization requires the addition of a chemical foaming agent into the emulsified matrix, and the chemically sensitized emulsion explosives have certain aftereffects, which affect the charge
Also, agitation during sensitization is not conducive to the storage of emulsion explosives
These existing methods are not efficient, and the output is small.

Method used

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  • Sensitizing method of emulsified explosive and gas flow nozzle used
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  • Sensitizing method of emulsified explosive and gas flow nozzle used

Examples

Experimental program
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Effect test

Embodiment 1

[0016] Example 1: Connect compressed air with a pressure of 5.5kg into the compressed air channel 2, and put the compressed air at a temperature of 110°C and a density of 1.41g / cm 3 1. The emulsified matrix with a flow rate of 3t / h is connected to the emulsified matrix channel 3 and atomized through the second-flow nozzle. During the atomization process, the emulsified matrix is ​​filled with gas while cooling to achieve the effect of sensitization. The resulting explosive density is 1.20g / cm 3 , the temperature is 38°C, and the detonation velocity of the explosive is 4600m / s.

Embodiment 2

[0017] Example 2: Connect compressed air with a pressure of 4.5kg into the compressed air channels 2 and 6, set the temperature to 110°C and the density to 1.41g / cm 3 1. The emulsification matrix with a flow rate of 3t / h is connected to the emulsification matrix channel 3 and atomized through the three-flow nozzle. During the atomization process, the emulsified matrix is ​​filled with gas while cooling to achieve the effect of sensitization. The resulting explosive density is 1.10g / cm 3 , the temperature is 40°C, and the detonation velocity of the explosive is 5100m / s.

Embodiment 3

[0018] Example 3: Connect compressed air with a pressure of 3.8kg into the compressed air channels 2 and 6, set the temperature to 110°C and the density to 1.41g / cm 3 1. The emulsification matrix with a flow rate of 3t / h is connected to the emulsification matrix channel 3 and atomized through the three-flow nozzle. During the atomization process, the emulsified matrix is ​​filled with gas while cooling to achieve the effect of sensitization. The resulting explosive density is 1.05g / cm 3 , the temperature is 40°C, and the detonation velocity of the explosive is 4500m / s.

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Abstract

Compressed air flowing through airflow nozzle is used to atomize emulsified explosive matrix, and during atomizing, the emulsified explosive matrix is inflated with air and thus sensitized. One kindof nozzle for the said process is also provided and includes nozzle body with compressed air passage and emulsified matrix passage inside it. The present invention can complete the sensitization of emulsified explosive matrix without using any sensitizing material and in high efficiency and yield. The present invention can complete the cooling and sensitizing of high temperature emulsified explosive matrix, the density of the emulsified explosive may be regulated via regulating the pressure of compressed air and the yield via regulating the flow rate of emulsified explosive matrix. Withoutany mechanical stirring, the present invention is favorable to the storage of explosive.

Description

technical field [0001] The invention relates to a method for sensitizing emulsion explosives and an air flow nozzle used therein. Background technique [0002] Emulsion explosive is a latex-like industrial explosive with excellent performance. During the production process of the explosive, a certain amount of fine air bubbles must be introduced into the explosive body to detonate normally with a detonator. High temperature sensitization is usually used in the production of emulsion explosives in developed countries. Low-temperature sensitization is used in the current production of emulsion explosives in my country, and the high-temperature emulsification matrix must be cooled before it can be sensitized. Since the emulsified matrix is ​​a poor conductor of heat, it is difficult to cool down, and excessive stirring during the cooling process will cause the emulsified explosive to demulsify. Therefore, the current cooling devices are relatively complex and bulky, and the re...

Claims

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Application Information

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IPC IPC(8): B05B1/00C06B21/00C06B45/00
Inventor 倪欧琪张兴明王志军
Owner 倪欧琪
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