JPS5771813A - Production of silicon from sodium silicofluoride - Google Patents
Production of silicon from sodium silicofluorideInfo
- Publication number
- JPS5771813A JPS5771813A JP14690880A JP14690880A JPS5771813A JP S5771813 A JPS5771813 A JP S5771813A JP 14690880 A JP14690880 A JP 14690880A JP 14690880 A JP14690880 A JP 14690880A JP S5771813 A JPS5771813 A JP S5771813A
- Authority
- JP
- Japan
- Prior art keywords
- sodium
- silicon
- reaction
- mixture
- silicofluoride
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: After reaction of sodium silicofluoride with metallic sodium is conducted to separate silicon, sodium fluoride is converted into sodium silicofluoride and circulated to produce high-purity silicon.
CONSTITUTION: The reaction between sodium silicofluoride and metallic sodium forms a mixture of silicon and sodium fluoride and the mixture is melted by heating in an intert gas. Then, the mixture is cooled down to room temperature to separate silicon from the solidified product. To remaining sodium fluoride, are added silicon oxide of higher than 90% purity and a mineral acid solution and they are heated to effect the reaction. Sodium silicofluoride formed is filtered, washed with water, dried, then used to react with metallic sodium. Thus, the production costs of silicon is greatly reduced.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14690880A JPS5771813A (en) | 1980-10-22 | 1980-10-22 | Production of silicon from sodium silicofluoride |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14690880A JPS5771813A (en) | 1980-10-22 | 1980-10-22 | Production of silicon from sodium silicofluoride |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5771813A true JPS5771813A (en) | 1982-05-04 |
JPS638043B2 JPS638043B2 (en) | 1988-02-19 |
Family
ID=15418283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14690880A Granted JPS5771813A (en) | 1980-10-22 | 1980-10-22 | Production of silicon from sodium silicofluoride |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5771813A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010083732A (en) * | 2008-10-02 | 2010-04-15 | Tohoku Univ | Method for manufacturing silicon crystal and method for manufacturing solar cell film |
CN106517246A (en) * | 2016-11-21 | 2017-03-22 | 衡阳市锦轩化工有限公司 | Method for continuously producing sodium fluoride |
-
1980
- 1980-10-22 JP JP14690880A patent/JPS5771813A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010083732A (en) * | 2008-10-02 | 2010-04-15 | Tohoku Univ | Method for manufacturing silicon crystal and method for manufacturing solar cell film |
CN106517246A (en) * | 2016-11-21 | 2017-03-22 | 衡阳市锦轩化工有限公司 | Method for continuously producing sodium fluoride |
Also Published As
Publication number | Publication date |
---|---|
JPS638043B2 (en) | 1988-02-19 |
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