公开(公告)号：US20150225246A1

公开(公告)日：2015-08-13

申请号：US14178103

申请日：2014-02-11

Applicant: REC Silicon Inc

Inventor： Sefa Yilmaz ,  Theodore F. Ciszek ,  Matthew J. Miller ,  Stein Julsrud

IPC: C01B33/021 ,  G01N21/3563

CPC classification number: C01B33/021 ,  C01B32/384 ,  C01B33/02 ,  C01B33/035 ,  C01B33/037 ,  G01N21/3563 ,  G01N2021/3595

Abstract: Apparatus and methods for consolidating granular silicon and determining trace elements content of the consolidated silicon are disclosed. Silicon granules are placed in a vessel, and a silicon slug of known purity is embedded at least partially in the granules. The slug is preheated to a temperature sufficient to couple with an induction heater. As the silicon slug melts, silicon granules adjacent the molten silicon also melt. The vessel passes through an induction coil to successively inductively heat and melt regions of the silicon granules from the leading end to the trailing end with each region solidifying as the molten silicon exits the induction coil to provide a multicrystalline silicon ingot. The multicrystalline silicon ingot is sliced into wafers, which are analyzed by low-temperature Fourier transform infrared spectroscopy to determine levels of trace elements in the ingot.

Abstract translation: 公开了用于固结颗粒状硅并确定固结硅的微量元素含量的装置和方法。 将硅颗粒放置在容器中，并且将至少部分地嵌入颗粒中的已知纯度的硅团块。 将坯料预热到足以与感应加热器相连的温度。 当硅团熔化时，与熔融硅相邻的硅颗粒也会熔化。 容器通过感应线圈，以随着熔融硅离开感应线圈而使硅颗粒的前端到后端逐渐地感应加热和熔融，每个区域都固化，从而提供多晶硅锭。 将多晶硅锭切成晶片，通过低温傅里叶变换红外光谱法分析晶锭中微量元素的含量。

公开(公告)号：US20200306712A1

公开(公告)日：2020-10-01

申请号：US16833446

申请日：2020-03-27

Applicant: REC Silicon Inc

Inventor： Kahl Brown ,  Matthew J. Miller ,  Benjamin Center ,  Gerald A. Zeininger ,  Stein Julsrud

IPC: B01J8/18

Abstract: A method of controlling particle additions to a fluidized bed reactor includes measuring pressure fluctuations inside the fluidized bed reactor over a selected time period, determining a pressure parameter indicative of amplitudes of the pressure fluctuations, comparing the pressure parameter to a specified threshold, and controlling particle additions to the fluidized bed reactor when the pressure parameter deviates from the specified threshold.

公开(公告)号：US10407310B2

公开(公告)日：2019-09-10

申请号：US15416291

申请日：2017-01-26

Applicant: REC Silicon Inc

Inventor： Robert J. Geertsen ,  Matthew J. Miller ,  Justin Johnston ,  Stein Julsrud ,  Sefa Yilmaz

IPC: C01B33/03 ,  C01B33/037 ,  F27D3/00 ,  F27D3/10 ,  F27D3/16

Abstract: 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.

公开(公告)号：US09662628B2

公开(公告)日：2017-05-30

申请号：US14461307

申请日：2014-08-15

Applicant: REC Silicon Inc

Inventor： Sefa Yilmaz ,  Matthew J. Miller ,  Michael V. Spangler ,  Barry Wemp ,  Stein Julsrud

IPC: B01J19/02 ,  B01J8/18 ,  B01J8/24 ,  C01B37/00 ,  C23C16/442 ,  B01J2/16 ,  C23C16/44 ,  C23C16/24 ,  B32B1/08 ,  C01B33/021 ,  C04B35/565 ,  C04B37/00 ,  F27B15/06 ,  F27D1/00 ,  F27D1/04 ,  B01J2/00

CPC classification number: B01J19/02 ,  B01J2/006 ,  B01J2/16 ,  B01J8/1872 ,  B01J8/24 ,  B01J2208/00168 ,  B32B1/08 ,  C01B33/021 ,  C04B35/565 ,  C04B37/005 ,  C04B2235/6562 ,  C04B2235/72 ,  C04B2235/725 ,  C04B2235/727 ,  C04B2237/062 ,  C04B2237/083 ,  C04B2237/09 ,  C04B2237/365 ,  C04B2237/52 ,  C04B2237/78 ,  C23C16/24 ,  C23C16/4404 ,  C23C16/442 ,  F27B15/06 ,  F27D1/0006 ,  F27D1/045

Abstract: Segmented silicon carbide liners for use in a fluidized bed reactor for production of polysilicon-coated granulate material are disclosed, as well as methods of making and using the segmented silicon carbide liners. Non-contaminating bonding materials for joining silicon carbide segments also are disclosed. One or more of the silicon carbide segments may be constructed of reaction-bonded silicon carbide.