| 摘要 |
An apparatus and process for separating silicon seed particles from silicon dust and large, heavy silicon particles. A classifier apparatus is a vertically oriented column having an inert gas flowing upwardly therethrough. A mixture of various size particles is dispensed into the central portion of the tube such that small dust particles and product size particles are entrained in the flowing gas and heavier particles fall to a receiver at the bottom of the tube. The small dust particles are separated from the product size particles near the top of the tube by providing an enlarged cross-sectional area flow path which continues to entrain the small particles but not the product size particles. The product size particles are then captured in a receptacle near the top of the tube.
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