Title:
二酸化珪素からのソーラーグレードシリコンの製造
Document Type and Number:
Japanese Patent JP2012504103
Kind Code:
A
Abstract:
The invention relates to a complete method for producing pure silicon that is suitable for use as solar-grade silicon, comprising the reduction of a purified silicon oxide using one or more pure carbon sources, the purified silicon oxide, which was purified as silicon oxide dissolved in an aqueous phase, having a content of other polyvalent metals or metal oxides, in relation to the silicon oxide, of less than or equal to 300 ppm, preferably less than 100 ppm, especially preferably less than 50 ppm and according to the invention less than 10 ppm of the other metals and being obtained advantageously by gel formation in alkaline conditions. The invention also relates to a formulation containing an activator and to the use of purified silicon oxide together with an activator for producing silicon.
Inventors:
Hartwig Laurer
Eckhart Mu
Musta Fajirai
Peter Nagler
Board frinks
Ingrid Lund-Leak
Alphonse curl
Christian pants
Thomas Grote
Gido Sthonnior
Matias lohonia
Jürgen Erwin Lang
Oliver Wolf
Rudolf Schmitz
Bernd Novitsky
Dietmar Webers
Eckhart Mu
Musta Fajirai
Peter Nagler
Board frinks
Ingrid Lund-Leak
Alphonse curl
Christian pants
Thomas Grote
Gido Sthonnior
Matias lohonia
Jürgen Erwin Lang
Oliver Wolf
Rudolf Schmitz
Bernd Novitsky
Dietmar Webers
Application Number:
JP2011529520A
Publication Date:
February 16, 2012
Filing Date:
September 28, 2009
Export Citation:
Assignee:
Evonik Degussa GmbH
International Classes:
C01B33/025
Attorney, Agent or Firm:
Takuya Kuno
Toshio Yano
Takahashi
Kimihiro Hoshi
Hiroyasu Ninomiya
Ryoichi Shino
Einzel Felix-Reinhard
Toshio Yano
Takahashi
Kimihiro Hoshi
Hiroyasu Ninomiya
Ryoichi Shino
Einzel Felix-Reinhard