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Method for using microwave drying detonator

A technology of microwave drying and explosives, which is used in drying solid materials, heating to dry solid materials, drying, etc., to achieve the effects of energy saving, uniform heating, and shortening of drying time.

Inactive Publication Date: 2009-11-04
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

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  • Method for using microwave drying detonator

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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 heating 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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Abstract

The invention relates to a method for drying explosives by using microwaves. The undried finished explosives with a moisture content of 5-20% are laid flat on a drying plate, and the thickness of the material layer is 15-30mm. 0.080 ~ 0.085MPa, microwave drying under the condition of microwave power 500 ~ 5000W. The drying method of the present invention is suitable for drying various elemental explosives such as RDX, Octogen (HMX), Taian (PETN), Nitroguanidine (NQ), molten TNT (TNT), etc. The drying time is between 1000 and 2000s, which is much shorter than the 7 to 8 hours of the conventional static tray drying method, and the moisture content of the explosive after drying is less than 0.01%.

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 Patents(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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