Accession Number : ADD011900

Title :   Microwave Drying of Ammonium Perchlorate Grinding Spheres.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Sayles,D C

Report Date : 30 Apr 1985

Pagination or Media Count : 4

Abstract : Disclosed is a method of microwave drying of ammonium perchlorate grinding spheres. 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. (Author)

Descriptors :   *PATENTS, *MICROWAVE OVENS, *DRYING APPARATUS, *DRYING, *GRINDERS, SILICON CARBIDES, ALUMINUM COMPOUNDS, CARBIDES, GRINDING, SPHERES, AMMONIUM PERCHLORATE, MOISTURE, EVAPORATION

Subject Categories : Mfg & Industrial Eng & Control of Product Sys
      Machinery and Tools

Distribution Statement : APPROVED FOR PUBLIC RELEASE