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Title: Device for fracturing silicon-carbide coatings on nuclear-fuel particles

Abstract

This invention is a device for fracturing particles. It is designed especially for use in hot cells designed for the handling of radioactive materials. In a typical application, the device is used to fracture a hard silicon-carbide coating present on carbon-matrix microspheres containing nuclear-fuel materials, such as uranium or thorium compounds. To promote remote control and facilitate maintenance, the particle breaker is pneumatically operated and contains no moving parts. It includes means for serially entraining the entrained particles on an anvil housed in a leak-tight chamber. The flow rate of the gas is at a value effecting fracture of the particles; preferably, it is at a value fracturing them into product particulates of fluidizable size. The chamber is provided with an outlet passage whose cross-sectional area decreases in the direction away from the chamber. The outlet is connected tangentially to a vertically oriented vortex-flow separator for recovering the product particulates entrained in the gas outflow from the chamber. The invention can be used on a batch or continuous basis to fracture the silicon-carbide coatings on virtually all of the particles fed thereto.

Inventors:
; ; ;
OSTI Identifier:
5290190
Assignee:
TIC; ERA-05-030239; EDB-80-088155
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; COATED FUEL PARTICLES; FRACTURING; REMOTE HANDLING EQUIPMENT; SILICON CARBIDES; COATINGS; FISSILE MATERIALS; SPENT FUELS; CARBIDES; CARBON COMPOUNDS; COMMINUTION; ENERGY SOURCES; EQUIPMENT; FISSIONABLE MATERIALS; FUEL PARTICLES; FUELS; MATERIALS; MATERIALS HANDLING EQUIPMENT; NUCLEAR FUELS; REACTOR MATERIALS; SILICON COMPOUNDS; 050700* - Nuclear Fuels- Fuels Production & Properties

Citation Formats

Turner, L J, Willey, M G, Tiegs, S M, and Van Cleve, Jr, J E. Device for fracturing silicon-carbide coatings on nuclear-fuel particles. United States: N. p., Web.
Turner, L J, Willey, M G, Tiegs, S M, & Van Cleve, Jr, J E. Device for fracturing silicon-carbide coatings on nuclear-fuel particles. United States.
Turner, L J, Willey, M G, Tiegs, S M, and Van Cleve, Jr, J E. . "Device for fracturing silicon-carbide coatings on nuclear-fuel particles". United States.
@article{osti_5290190,
title = {Device for fracturing silicon-carbide coatings on nuclear-fuel particles},
author = {Turner, L J and Willey, M G and Tiegs, S M and Van Cleve, Jr, J E},
abstractNote = {This invention is a device for fracturing particles. It is designed especially for use in hot cells designed for the handling of radioactive materials. In a typical application, the device is used to fracture a hard silicon-carbide coating present on carbon-matrix microspheres containing nuclear-fuel materials, such as uranium or thorium compounds. To promote remote control and facilitate maintenance, the particle breaker is pneumatically operated and contains no moving parts. It includes means for serially entraining the entrained particles on an anvil housed in a leak-tight chamber. The flow rate of the gas is at a value effecting fracture of the particles; preferably, it is at a value fracturing them into product particulates of fluidizable size. The chamber is provided with an outlet passage whose cross-sectional area decreases in the direction away from the chamber. The outlet is connected tangentially to a vertically oriented vortex-flow separator for recovering the product particulates entrained in the gas outflow from the chamber. The invention can be used on a batch or continuous basis to fracture the silicon-carbide coatings on virtually all of the particles fed thereto.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {},
month = {}
}