ELECTROMAGNETIC CASTING DEVICE FOR SILICON INGOTS

WIPO Patent Application WO/2012/011160

A1

Disclosed is an electromagnetic casting device for continuously casting silicon ingots by introducing a silicon material into a bottomless cooling crucible that is arranged inside a chamber, melting the silicon material through induction heating caused by an induction coil, and solidifying the molten silicon while lowering same from the cooling crucible. The electromagnetic casting device includes a ventilation pipe that is connected to the upper and lower sections of the side wall of the chamber, and that takes in atmospheric gas above the cooling crucible and sends out the atmospheric gas below the cooling crucible. A dust collector and a magnetic separator are provided on the path of the ventilation pipe. Thus, during continuous casting, the molten silicon can be prevented from being contaminated by metal impurities due to the free convection of the atmospheric gas inside the chamber.

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NAITOU NOBUMASA (JP)
KUSABA TATSUMI (JP)
MIYAMOTO SHINICHI (JP)

PCT/JP2010/006739

January 26, 2012

November 17, 2010

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SUMCO CORP (JP)
NAITOU NOBUMASA (JP)
KUSABA TATSUMI (JP)
MIYAMOTO SHINICHI (JP)

C01B33/02; B22D11/00; B22D11/041; B22D11/11; B22D21/00; B22D23/00; B22D23/06; B22D25/04; B22D27/02; B22D11/12

WO2007020706A1

2007-02-22

JP2009046339A	2009-03-05
JP2008156166A	2008-07-10
JPH01264920A	1989-10-23
JPH0251493A	1990-02-21
JPH04342496A	1992-11-27

MORI, Michio et al. (JP)
Michio Mori (JP)

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