Method and Device For Comminuting and Sorting Polysilicon

• US 20070235574A1
• Filed: 03/29/2007
• Published: 10/11/2007
• Est. Priority Date: 04/06/2006
• Status: Active Grant

• Current Assignee: Wacker Chemie AG (Dr. Alexander Wacker Familiengesellschaft Mit Beschrã¤Nkter Haftung)
• Original Assignee: Wacker Chemie AG (Dr. Alexander Wacker Familiengesellschaft Mit Beschrã¤Nkter Haftung)
• Inventors: Schantz, Matthaeus, Schaefer, Marcus, Pech, Reiner
• Granted Patent: US 8,074,905 B2
• Time in Patent Office: Days
• US Class Current: 241/36
• CPC Class Codes: B02C 21/00 Disintegrating plant with or without drying of the material for grain B02C9/04
• CPC Class Codes: B02C 23/08 Separating or sorting of material, associated with crushing or disintegrating B02C23/18 takes precedence ; beater mills combined with sifting devices B02C13/13, B02C13/14; for tumbling mills B02C17/1835
• CPC Class Codes: B02C 25/00 Control arrangements specially adapted for crushing or disintegrating
• CPC Class Codes: B07C 5/08 measured electrically or electronically B07C5/10 takes precedence ; sorting according to electric or electromagnetic properties B07C5/344; measuring size in general using electric or magnetic means G01B7/00; testing coins G07D5/00
• CPC Class Codes: C01B 33/02 Silicon forming single crystals or homogeneous polycrystalline material with defined structure C30B
• CPC Class Codes: C30B 15/00 Single-crystal growth by pulling from a melt, e.g. Czochralski method under a protective fluid C30B27/00
• CPC Class Codes: C30B 29/06 Silicon

Abstract

The invention relates to a device for comminuting and sorting polycrystalline silicon, comprising an instrument for feeding a coarse polysilicon fraction into a crushing system, the crushing system associated with a sorting system for classifying the polysilicon fraction, wherein the device is provided with a controller which allows variable adjustment of at least one crushing parameter in the crushing system and/or at least one sorting parameter in the sorting system.

Claims