Rotary silicon screen

Details Rotary silicon screen Rotary silicon screen

1991-06-03

1992-11-24

Kashnikow, Andres

Classifying, separating, and assorting solids

Special applications

209235, 209288, 209394, 209664, B07B 122

Patent

active

051655489

ABSTRACT:
The present invention is a device for separating semiconductor grade silicon pieces into desired size ranges, while minimizing contact contamination of the separated pieces. The device employs a rotatable cylindrical screen, with contact surfaces of semiconductor grade silicon. In a preferred embodiment, the cylindrical screen consists of parallel rods of semiconductor grade silicon separated by semiconductor grade silicon, internal, spacers. In addition, external spacers of semiconductor grade silicon are arranged along the length of the parallel rods to further define the exclusion characteristics of the cylindrical screen.

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