SYSTEMS AND METHODS FOR REDUCING DUST IN GRANULAR MATERIAL

摘要

A method of removing dust from granular polysilicon comprises introducing a stream of granular polysilicon, dispersing a longitudinal stream of granular polysilicon by redirecting the stream into a radial outward flow having a circular pattern, and Introducing a counterflow of gas in a direction opposite to the direction of the longitudinal stream of granular polysilicon to contact a radial outward flow to separate dust from the phase polysilicon.