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1. 发明授权

US4323198A Method for fracturing silicon-carbide coatings on nuclear-fuel particles 失效
$Method for fracturing silicon-carbide coatings on nuclear-fuel particles$
标题翻译：在核燃料颗粒上压裂碳化硅涂层的方法
公开(公告)号：US4323198A
公开(公告)日：1982-04-06
申请号：US191613
申请日：1980-09-29
申请人： Lloyd J. Turner , Melvin G. Willey , Sue M. Tiegs , John E. Van Cleve, Jr.
发明人： Lloyd J. Turner , Melvin G. Willey , Sue M. Tiegs , John E. Van Cleve, Jr.
IPC分类号： B02C19/06 , G21C19/36 , B02C19/12
CPC分类号： G21C19/36 , B02C19/06
摘要： 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 material, 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.
摘要翻译：本发明是用于压裂颗粒的装置。它专门设计用于处理放射性物质的“热电池”。在典型的应用中，该装置用于破坏含有核燃料材料如铀或钍化合物的碳基微球上存在的硬质碳化硅涂层。为了促进遥控和便于维护，破碎机是气动操作的，不包含运动部件。它包括用于将夹带的颗粒串行地夹带在容纳在不透气室中的砧上的装置。气体的流量处于影响颗粒断裂的值; 优选地，它将其压碎成可流化尺寸的产品颗粒。该腔室设有一个出口通道，其横截面积在远离腔室的方向上减小。出口与垂直取向的涡流分离器切向连接，用于回收夹带在从腔室排出的气体中的产物微粒。本发明可以间歇或连续使用，以将碳化硅涂层实际上全部碎屑送入其中。

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