Verfahren zur Herstellung von alpha-Calciumsulfat-Halbhydrat
    82.
    发明公开
    Verfahren zur Herstellung von alpha-Calciumsulfat-Halbhydrat 有权
    一种用于生产硫酸的α-钙半水合物过程

    公开(公告)号:EP2418184A3

    公开(公告)日:2013-04-17

    申请号:EP11176832.1

    申请日:2011-08-08

    申请人: Lindner GFT GmbH

    发明人: Aschern, Winfried

    IPC分类号: C04B11/02 C04B28/14

    摘要: Verfahren zur Herstellung von α-Calciumsulfat-Halbhydrat, umfassend die folgenden Schritte:
    - Vermischen von wenigstens einem gipshaltigen Abfallstoff und wenigstens einem REA-Gips mit Wasser zur Bildung einer wässrigen Suspension,
    - Erhitzen der Suspension in einem Druckbehälter und Halten der erhitzten Suspension auf der Erhitzungstemperatur, wobei der wenigstens eine gipshaltige Abfallstoff und der wenigstens eine REA-Gips zu α-Calciumsulfat-Halbhydrat umgesetzt wird,
    - Abtrennen des α-Calciumsulfat-Halbhydrats aus der Suspension oder Zuführen der Suspension zu einem Prozess zur Herstellung von Gipsplatten oder Gipsfaserplatten.

    Method for measuring point defect distribution of silicon single crystal lingot
    84.
    发明公开
    Method for measuring point defect distribution of silicon single crystal lingot 有权
    用于确定硅单晶的点缺陷分布方法

    公开(公告)号:EP2077346A3

    公开(公告)日:2010-02-24

    申请号:EP09001440.8

    申请日:2003-10-17

    申请人: SUMCO CORPORATION

    IPC分类号: C30B29/06 G01N27/04

    摘要: A single crystal ingot is cut to an axial direction so as to including the central axis, a sample for measurement including regions [V], [Pv], [Pi] and [I] is prepared, and a first sample and second sample are prepared by dividing the sample into two so as to be asymmetrical against the central axis. A first transition metal is metal-stained on the surface of the first sample and a second transition metal different from the first transition metal is metal-stained on the surface of the second sample. The first and second samples stained with the metals are thermally treated and the first and second transition metals are diffused into the inside of the samples. Recombination lifetimes in the whole of the first and second samples are respectively measured, and the vertical measurement of the first sample is overlapped on the vertical measurement of the second sample. The boundary between the regions [Pi] and [I] and the boundary between the regions [V] and [Pv] are respectively specified from the overlapped result.