Method for using microwave drying detonator

A technology of microwave drying and explosives, which is applied in the direction of drying solid materials, heating to dry solid materials, drying, etc., to achieve the effects of improving drying speed and product quality, uniform heating, and low temperature

Inactive Publication Date: 2008-07-16
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, there is little research on the microwave drying of explosives. Zuo Jun et al. (Energetic Materials. 2006, 14(4): 283-285) of the Chinese Academy of Engineering Physics conducted a microwave drying test on TNT, which proved that microwave drying of explosives Feasibility

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Spread 10g of RDX finished product with a moisture content of 5% in a glass watch glass, and lay the material layer with a thickness of 15mm. Put the material into a microwave oven, adjust the vacuum degree to 0.08MPa, irradiate with microwave power of 500w, and dry for 1020s to obtain a dry RDX explosive with a moisture content of less than 0.01%. Tested by an infrared thermometer, the temperature of the material during the drying process was 50°C.

Embodiment 2

[0033] Under the condition of vacuum degree of 0.082MPa, microwave power of 1400w, and material layer thickness of 20mm, 1000g of HMX with a moisture content of 10% was irradiated with microwaves. The temperature rise rate of the material is very fast at the beginning, but due to the low moisture content, the temperature will slowly drop after reaching the highest point, and the moisture will also be lost slowly. The temperature of the material is 52°C when tested by an infrared thermometer. The complete drying time of HMX is 1250s, and the moisture content of the dried HMX explosive is less than 0.01%.

Embodiment 3

[0035] Under the conditions of a vacuum degree of 0.085MPa, a microwave power of 2000w, and a material layer thickness of 20mm, 500g of PETN with a moisture content of 10% was irradiated with microwaves. The temperature of the material tested by the infrared thermometer was 52°C. The complete drying time of PETN is 1050s, and the moisture content of the explosive after drying is less than 0.01%.

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PUM

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Abstract

The invention relates to a method which uses microwaves to dry explosive. The method is that an undried finished detonator with 5 to 20 percent of water content is equally laid onto a drying plate, and the material thickness is 15 to 30mm, then the detonator is put into a microwave to carry out microwave drying in a condition with the vacuum degree of 0.080 to 0.085 MPa and the microwave power of 500 to 5000W. The drying method of the invention is suitable for drying RDX, HMX, PETN, NQ and TNT, etc. various single compound explosives. The complete drying time of the explosive is between 1000 and 2000s, which is far less than a normal static plate drying method by 7 to 8 hours, and the water content of the explosive is less than 0.01 percent after being dried.

Description

technical field [0001] The invention relates to a drying method for explosives, in particular to a microwave drying method for explosives. Specifically, the present invention uses microwave vacuum drying technology to dry explosives, especially elemental explosives. Background technique [0002] Microwave refers to the electromagnetic wave whose wavelength is short enough that waveguide and resonant cavity technology can be practically applied in transmission and reception, including the wavelength range from 1mm to 1000mm, and the corresponding frequency band is 3×10 5 MHz to 3×10 2 MHz is an extremely wide frequency resource. Microwave has the characteristics of straight line propagation, space attenuation, and good reflectivity to metals. Since it was applied to military radar devices in World War II, it has developed rapidly and is gradually widely used in today's communications, television, telemetry, and remote sensing. . [0003] Microwave heating is when a dielec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B3/347
Inventor 曹端林胡志勇李永祥崔建兰王建龙
Owner ZHONGBEI UNIV
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