JPS5771813A - Production of silicon from sodium silicofluoride - Google Patents

Production of silicon from sodium silicofluoride

Info

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
Application number
JP14690880A
Other languages
Japanese (ja)
Other versions
JPS638043B2 (en
Inventor
Hajime Kato
Shinichi Sasaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ONODA CEMENT KK
Onoda Cement Co Ltd
Original Assignee
ONODA CEMENT KK
Onoda Cement Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ONODA CEMENT KK, Onoda Cement Co Ltd filed Critical ONODA CEMENT KK
Priority to JP14690880A priority Critical patent/JPS5771813A/en
Publication of JPS5771813A publication Critical patent/JPS5771813A/en
Publication of JPS638043B2 publication Critical patent/JPS638043B2/ja
Granted legal-status Critical Current

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
JP14690880A 1980-10-22 1980-10-22 Production of silicon from sodium silicofluoride Granted JPS5771813A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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