Process for obtaining silicon from fluosilicic acid
Abstract
Process for producing low cost, high purity solar grade Si wherein a reduction reaction, preferably the reduction of SiF.sub.4, by an alkali metal (Na preferred) is carried out by jetting a spray of reactants into a reaction chamber at a rate and temperature which causes the reaction to take place far enough away from the entry region to avoid plugging of reactants at the entry region and wherein separation in the melt is carried out continuously from the reaction and the Si can be cast directly from the melt.
- Inventors:
-
- San Jose, CA
- Issue Date:
- OSTI Identifier:
- 864949
- Patent Number(s):
- 4442082
- Application Number:
- 06/453,456
- Assignee:
- SRI International (Menlo Park, CA)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
- DOE Contract Number:
- 954471-NAS 7-100
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- process; obtaining; silicon; fluosilicic; acid; producing; cost; purity; solar; grade; reduction; reaction; preferably; sif; alkali; metal; na; preferred; carried; jetting; spray; reactants; chamber; rate; temperature; causes; entry; region; avoid; plugging; separation; melt; continuously; cast; directly; na preferred; fluosilicic acid; reaction chamber; alkali metal; solar grade; purity solar; entry region; obtaining silicon; reduction reaction; avoid plugging; cast directly; silicic acid; /423/422/
Citation Formats
Sanjurjo, Angel. Process for obtaining silicon from fluosilicic acid. United States: N. p., 1984.
Web.
Sanjurjo, Angel. Process for obtaining silicon from fluosilicic acid. United States.
Sanjurjo, Angel. Tue .
"Process for obtaining silicon from fluosilicic acid". United States. https://www.osti.gov/servlets/purl/864949.
@article{osti_864949,
title = {Process for obtaining silicon from fluosilicic acid},
author = {Sanjurjo, Angel},
abstractNote = {Process for producing low cost, high purity solar grade Si wherein a reduction reaction, preferably the reduction of SiF.sub.4, by an alkali metal (Na preferred) is carried out by jetting a spray of reactants into a reaction chamber at a rate and temperature which causes the reaction to take place far enough away from the entry region to avoid plugging of reactants at the entry region and wherein separation in the melt is carried out continuously from the reaction and the Si can be cast directly from the melt.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {4}
}
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