公开(公告)号：US20160214141A1

公开(公告)日：2016-07-28

申请号：US14917677

申请日：2014-08-07

Applicant: WACKER CHEMIE AG

Inventor： Andreas SCHNEIDER ,  Peter GRUEBL ,  Rainer HAUSWIRTH ,  Reiner PECH

IPC: B07B1/46 ,  B07B1/28

CPC classification number: B07B1/4609 ,  B07B1/00 ,  B07B1/28 ,  B07B1/46 ,  B07B13/18 ,  B07B2201/04

Abstract: A method for mechanically classifying polycrystalline silicon chunks or granules with a vibratory screening machine, involves setting silicon chunks or granules present on one or more screens each comprising a screen lining in vibration such that the silicon chunks or silicon granules perform a movement which causes the silicon chunks or silicon granules to be separated into various size classes, wherein a screening index is greater than or equal to 0.6 and less than or equal to 9.0.

Abstract translation: 一种用振动筛选机对多晶硅块或颗粒进行机械分类的方法，包括设置一个或多个屏幕上存在的硅块或颗粒，每个屏幕均包含振动筛网，使得硅块或硅颗粒进行移动， 块或硅颗粒分离成各种尺寸等级，其中筛选指数大于或等于0.6且小于或等于9.0。

公开(公告)号：US20170113228A1

公开(公告)日：2017-04-27

申请号：US15316931

申请日：2015-06-02

Applicant: Wacker Chemie AG

Inventor： Gerhard FORSTPOINTNER ,  Rainer HAUSWIRTH

IPC: B02C19/06 ,  C04B35/56 ,  C01B33/021

Abstract: Silicon seed particles which can be used for producing polycrystalline silicon granules in a fluidized-bed reactor are prepared by a process wherein a milling gas stream is introduced into a chamber containing polycrystalline silicon granules, as a result of which individual particles of the polycrystalline silicon granules are accelerated in such a manner that they collide with other particles of the polycrystalline silicon granules, and in this manner the polycrystalline silicon granules are comminuted, wherein the milling gas stream is introduced into the chamber by at least one jet nozzle made of hard metal.

公开(公告)号：US20180169704A1

公开(公告)日：2018-06-21

申请号：US15898802

申请日：2018-02-19

Applicant: Wacker Chemie AG

Inventor： Andreas SCHNEIDER ,  Peter GRUEBL ,  Rainer HAUSWIRTH ,  Reiner PECH

IPC: B07B1/46 ,  B07B13/18 ,  B07B1/00 ,  B07B1/28

CPC classification number: B07B1/4609 ,  B07B1/00 ,  B07B1/28 ,  B07B1/46 ,  B07B13/18 ,  B07B2201/04

Abstract: A method for mechanically classifying polycrystalline silicon chunks or granules with a vibratory screening machine, involves setting silicon chunks or granules present on one or more screens each comprising a screen lining in vibration such that the silicon chunks or silicon granules perform a movement which causes the silicon chunks or silicon granules to be separated into various size classes, wherein a screening index is greater than or equal to 0.6 and less than or equal to 9.0.

公开(公告)号：US20180104720A1

公开(公告)日：2018-04-19

申请号：US15566702

申请日：2016-04-01

Applicant: Wacker Chemie AG

Inventor： Michael FRICKE ,  Martin BRIXEL ,  Robert ENGGRUBER ,  Rainer HAUSWIRTH

IPC: B07B4/08 ,  B07B11/04 ,  B07B11/06

CPC classification number: B07B4/08 ,  B07B11/04 ,  B07B11/06 ,  B07B13/16 ,  C01B33/037

Abstract: Granular polysilicon is fed into a screening plant, divided into two or more fractions by means of one or more screen surfaces, and thereby classified and dedusted wherein a throwing motion of the granular polysilicon in the screening plant removes adhering dust particles from the granular polysilicon, the removed dust particles are taken off from the screening plant by means of a gas flow supplied to the screening plant, and the screening plant is of gas-tight design and supply and takeoff of the gas flow are effected such that the screening plant is at a positive pressure compared to the surroundings.

公开(公告)号：US20160326001A1

公开(公告)日：2016-11-10

申请号：US15109556

申请日：2014-12-11

Applicant: WACKER CHEMIE AG

Inventor： Rainer HAUSWIRTH ,  Robert ENGGRUBER

IPC: C01B33/03 ,  B05D1/22

CPC classification number: C01B33/03 ,  B01F5/247 ,  B05D1/22

Abstract: Segregation of silicon granules in the fluidized bed production of polycrystalline silicon is achieved by successively transferring granular polycrystalline silicon through a plurality of vessels designed for funnel flow of granular material. The transfers may occur prior to introduction of feed particles into the reactor, or the enlarged granules from the reactor may be thus transferred to improve product size uniformity.

Abstract translation: 多晶硅流化床生产中硅颗粒的分离是通过将粒状多晶硅连续转移通过设计用于粒状材料漏斗流的多个容器来实现的。 转移可以在将进料颗粒引入反应器之前进行，或者可以转移来自反应器的增大的颗粒以改善产物尺寸的均匀性。

公开(公告)号：US20130295385A1

公开(公告)日：2013-11-07

申请号：US13888518

申请日：2013-05-07

Applicant: Wacker Chemie AG

Inventor： Harald HERTLEIN ,  Rainer HAUSWIRTH ,  Dieter WEIDHAUS

IPC: C01B33/02 ,  C23C16/24 ,  C23C16/442

CPC classification number: C01B33/02 ,  C01B33/03 ,  C01P2002/90 ,  C01P2004/03 ,  C01P2004/45 ,  C01P2004/50 ,  C01P2006/12 ,  C01P2006/80 ,  C23C16/24 ,  C23C16/442 ,  Y10T428/2982

Abstract: Granular polycrystalline silicon includes a compact matrix including radiating acicular crystal aggregates of crystal size from 0.001-200 μm. A process for producing granular polycrystalline silicon includes producing granular silicon in a fluidized bed reactor from a gas mixture containing TCS (20-29 mol %) and hydrogen at a fluidized bed temperature of 900-970° C., dividing the granular silicon in a screen system having at least one screen deck into at least two screen fractions, the smallest screen fraction being ground in a grinding system to give seed particles having a size of 100-1500 μm and a mass-based median value from 400 to 900 μm, and these seed particles being supplied to fluidized bed reactor, and a further screen fraction being supplied to a fluidized bed reactor, and being surface-treated with a gas mixture containing TCS (5.1-10 mol %) and hydrogen at a fluidized bed temperature of 870-990° C.

Abstract translation: 颗粒状多晶硅包括紧凑的基体，包括散射出0.001-200μm的晶体尺寸的针状结晶聚集体。 一种生产颗粒状多晶硅的方法包括在流化床反应器中由流化床温度为900-970℃的TCS（20-29mol％）和氢气的气体混合物制备颗粒状硅，将粒状硅分成 筛网系统具有至少一个筛板，至少两个筛分部分，最小筛分部分在研磨系统中研磨以得到尺寸为100-1500μm的种子颗粒和基于质量的中值为400至900μm， 并将这些种子颗粒供应到流化床反应器，并将另外的筛分部分供入流化床反应器，并在流化床温度为TCS（5.1-10mol％）和氢气的气体混合物进行表面处理 870-990℃