System for reducing agglomeration during annealing of flowable, finely divided solids

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United States of America

PATENT NO 10407310
APP PUB NO 20180208471A1
SERIAL NO

15416291

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Abstract

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This disclosure concerns embodiments of an annealing device and a method for annealing flowable, finely divided solids, such as annealing granular silicon to reduce a hydrogen content of the granular silicon. The annealing device comprises at least one tube through which flowable, finely divided solids are flowed downwardly. The tube includes a heating zone and (i) a residence zone below the heating zone, (ii) a cooling zone below the heating zone, or (iii) a residence zone below the heating zone and a cooling zone below the residence zone. An inert gas is flowed upwardly through the tube. The tube may be constructed from two or more tube segments. The annealing device may include a plurality of tubes arranged and housed within a shell. The annealing device and method are suitable for a continuous process.

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Patent Owner(s)

Patent OwnerAddress
REC SILICON INC3322 ROAD N NE MOSES LAKE WA 98837

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Geertsen, Robert J Eltopia, US 18 48
Johnston, Justin Ellensburg, US 5 11
Julsrud, Stein Moses Lake, US 27 76
Miller, Matthew J Moses Lake, US 80 2467
Yilmaz, Sefa Moses Lake, US 14 57

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