Tumbling device for the separation of granular polysilicon and polysilicon powder
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United States of America Patent
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May 14, 2019
Grant Date -
Nov 9, 2017
app pub date -
May 5, 2016
filing date -
May 5, 2016
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Abstract
Methods and apparatus for separating polysilicon powder from a mixture of granular polysilicon and polysilicon powder are disclosed. The method includes tumbling the polysilicon material in a tumbling device while flowing humidified sweep gas through the tumbling device. Also disclosed are compositions including granulate polysilicon or polycrystalline silicon, in some examples, including a coating layer consisting essentially of water.
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