Global Patent Index - EP 1472184 B8

EP 1472184 B8 20060503 - METHOD FOR PRODUCING SILICON

Title (en)

METHOD FOR PRODUCING SILICON

Title (de)

VERFAHREN ZUR HERSTELLUNG VON SILICIUM

Title (fr)

PROCEDE DE PRODUCTION DE SILICIUM

Publication

EP 1472184 B8 20060503 (DE)

Application

EP 03704217 A 20030117

Priority

  • DE 0300115 W 20030117
  • DE 10201772 A 20020118
  • DE 10217125 A 20020417

Abstract (en)

[origin: WO03059814A1] The invention relates to a method for producing silicon, according to which SiO2 or silicates are reacted thermally with hydrogen fluoride or a fluoride of a metal of group I or II of the periodic table, or with hexafluorosilicates to obtain SiF4. The SiF4 that is obtained is reduced to Si and a metal fluoride by means of a metal of group I or II of the periodic table. The method is characterised in that it represents a closed production process, in which very few or no by-products are generated and that the co-reactants required for the reaction are obtained to a great extent from the educts of the method.

IPC 8 full level

C01B 33/033 (2006.01)

CPC (source: EP)

C01B 33/033 (2013.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR

DOCDB simple family (publication)

WO 03059814 A1 20030724; AT 315536 T 20060215; AU 2003206625 A1 20030730; DE 50302184 D1 20060406; EP 1472184 A1 20041103; EP 1472184 B1 20060111; EP 1472184 B8 20060503; ES 2258216 T3 20060816

DOCDB simple family (application)

DE 0300115 W 20030117; AT 03704217 T 20030117; AU 2003206625 A 20030117; DE 50302184 T 20030117; EP 03704217 A 20030117; ES 03704217 T 20030117