Microwave drying of ammonium perchlorate grinding spheres

Details Microwave drying of ammonium perchlorate grinding spheres Microwave drying of ammonium perchlorate grinding spheres

1983-11-10

1985-04-30

Schwartz, Larry I.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 68, 219 1055R, 219 1055M, F26B 334

Patent

active

045135134

ABSTRACT:
Disclosed is a method of microwave drying of ammonium perchlorate grinding pheres. A preferred embodiment of the method employs a tunnel oven in combination with a microwave generator having an appropriate power supply. The tunnel oven receives microwave energy through transmission ducts in communication with a channeling device to distribute microwave energy over the grinding spheres to be dried. A preheated air supply facilitates moisture removal from the tunnel oven after the moisture adhered or occluded to the grinding spheres' surfaces is evaporated from the grinding spheres as a result of molecular vibrations of the water molecules after they absorb the microwave energy. A predetermined microwave frequency range and a predetermined drying time are employed to more efficiently remove adhered or occluded moisture from carbide grinding spheres as compared to conventional convection drying.

REFERENCES:
patent: 3434220 (1969-03-01), Forster
patent: 4340806 (1984-02-01), Hopkins

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