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Apparatus and method for surface coating of explosive particles

A technology of surface coating and explosives, which is applied in the direction of explosives, explosives processing equipment, offensive equipment, etc., can solve the problems of a large number of solvents and solvent limitations, and achieve high coating efficiency, good coating effect and better coating effect

Active Publication Date: 2018-04-27
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The operation process of this method is relatively safe, but it needs to use a large amount of solvent, and the choice of solvent is limited by its solubility

Method used

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  • Apparatus and method for surface coating of explosive particles

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 As shown, a device for coating the surface of explosive particles includes a sublimation zone 3, a coating zone 5 and a measurement and control zone 2. The measurement and control zone 2 is set around the sublimation zone 3 and the coating zone 5 respectively. The inside of the sublimation zone 3 is used to place sublimable substances 10, the inside of the coating zone 5 is used to place explosive particles 9, and a guide tube 4 is connected between the sublimation zone 3 and the cover zone 5, and the guide tube 4 can promote The sublimable substance 10 diffuses from the sublimation zone 3 to the coating zone 5 . The sublimation zone 3 and the cladding zone 5 are respectively connected with a pressure relief valve 8. The pressure relief valve 8 of the present invention is selected as a mechanism that is destroyed as a whole after being subjected to the action of the gas and does not restore the pressure relief function. After being subjected to the acti...

Embodiment 2

[0053] figure 1 The explosive particle surface coating device shown is cylindrical, while figure 1 It is a schematic cross-sectional view of the cylindrical device. The device includes a sublimation zone 3, a cladding zone 5 and a measurement and control zone 2. The sublimation zone 3 and the cladding zone 5 are equipped with temperature measurement points and temperature control measures for each independent heating zone. The upstream end of the sublimation zone 3 is provided with a protective gas injection port 1, the guide tube 4 is provided between the sublimation zone 3 and the cladding zone 5, the vacuum port 7 is set at the downstream end of the cladding zone 5, and the sublimation zone 3 and the cladding zone 5 are equipped with A plurality of pressure relief valves, the coating area 5 is equipped with a movement mechanism 6 that can rotate the particles, the temperature, vacuum degree, and movement of each area of ​​the device can be controlled by a preset program, an...

Embodiment 3

[0064] The explosive particle surface coating device of this embodiment is the same as that of the first and second embodiments, except that the explosive particle surface coating device is used to coat the explosive particle, and the sublimation material A1 with low mechanical sensitivity is coated on the surface of the explosive particle. The outer surface of the explosive particle B1 with higher mechanical sensitivity plays a passivation role.

[0065] In the surface coating device for explosive particles, the sublimation zone 3 is a cylindrical structure with a length of 200mm and an inner diameter of 100mm, and the inner surface of the sublimation zone 3 is set as two semi-cylindrical mutually independent heating zones with a length of 300mm. A guide tube 4 is arranged between the sublimation zone 3 and the cladding zone 5, and the inner surface of the guide tube 4 is set as an independent heating area. The cladding area 5 is a cylindrical structure with a length of 300 m...

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Abstract

The invention discloses an explosive particle surface coating device and method. The device comprises a sublimation zone, a coating zone and a measurement and control zone. The measurement and control zone is arranged around the sublimation zone and the coating zone. A sublimable material is arranged in the sublimation zone. Explosive particles are arranged in the coating zone. A diversion pipe communicates the sublimation zone and the coating zone. The sublimation zone and the coating zone are respectively communicated with pressure release valves. Each one of the sublimation zone, the coating zone and the measurement and control zone is prepared from a bearing material layer, an inert material layer and an electromagnetic induction material layer. Heat produced through electromagnetic induction heating sublimates the sublimable material and the gaseous sublimable material enters the coating zone and coats the surfaces of the explosive particles in the coating zone. The motion mechanism in the coating zone keeps explosive particle motion so that coating effects are good and coating efficiency is high.

Description

technical field [0001] The invention relates to the field of energetic materials, in particular to a device and method for coating the surface of explosive particles, in particular to a sublimation device for coating the surface of explosive particles and a method for preparing explosive coated particles using the device. Background technique [0002] Explosives are self-synthesized in a granular state. The shape, particle size, surface morphology, and internal impurities of this particle are all affected by the synthesis reaction process, and it is difficult to directly meet the needs of subsequent applications. Most of them need to be recrystallized. , grinding, ball milling, fluid milling and other methods for particle modification. Different from these modification methods that do not introduce new substances, the surface coating technology is introduced as a coating layer on the surface of the particles, and the properties of the coating material introduced into the for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B21/00
CPCC06B21/0083
Inventor 郁卫飞廖龙渝黄靖伦杨光成卢欢唱
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS