C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 33/037 (2006.01)
Patent
CA 2557764
The present invention provides a method for removal of boron from metal silicon inexpensively and extremely efficiently by a simple method, specifically, heating metal silicon containing boron as an impurity to its melting point to 2200°C to place it in a molten state, then adding a solid mainly comprised of silicon dioxide and a solid mainly comprised of one or both of a carbonate of an alkali metal or a hydrate of a carbonate of an alkali metal into said molten silicon so as to form a slag and remove the boron in the silicon.
Il est prévu un simple procédé pour retirer le bore d'un silicium métallique de manière extrêmement efficace à bas prix. Après avoir chauffé un silicium métallique contenant du bore comme impureté à une température supérieure ou égale au point de fusion et ne dépassant pas 2.200°C de telle sorte que le silicium métallique soit à l'état fondu, l'on ajoute une substance solide composée principalement de dioxyde de silicium et une autre substance solide composée principalement d'un des éléments suivants, ou des deux : carbonate de métal alcalin et hydrate de carbonate de métal alcalin, au silicium fondu de telle sorte que de la scorie se forme tout en retirant le bore du silicium.
Kondo Jiro
Okazawa Kensuke
Goudreau Gage Dubuc
Nippon Steel Corporation
LandOfFree
Method for removing boron from silicon does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for removing boron from silicon, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for removing boron from silicon will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1835700