JPS5571625A - Production of low molar ratio fluoride - Google Patents
Production of low molar ratio fluorideInfo
- Publication number
- JPS5571625A JPS5571625A JP14573678A JP14573678A JPS5571625A JP S5571625 A JPS5571625 A JP S5571625A JP 14573678 A JP14573678 A JP 14573678A JP 14573678 A JP14573678 A JP 14573678A JP S5571625 A JPS5571625 A JP S5571625A
- Authority
- JP
- Japan
- Prior art keywords
- molar ratio
- fluoride
- alf
- chiolite
- ratio
- 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.)
- Pending
Links
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
PURPOSE: To obtain low molar ratio fluoride for use in manufacture of Al by electrolysis without forming a viscous melt in a high yield with high work efficiency by mixing Al2O3 into a mixt. of cryolite and al (SO4)3 followed by heating.
CONSTITUTION: Al2O3 (C) is mixed into a mixt. of cryolite (A) and Al2(SO4)3 (B) and heated to 550°C or above to produce fluoride (D) having a compsn. with a molar ratio of NaF to AlF3 of 3 or less. The fluoride (D) includes AlF3, various mixts. of AlF3 and 5NaF.3AlF3 (chiolite), and chiolite. The mixing ratio of (A) and (B) is adjusted to a molar ratio of (B) to (A) of 0.5W0.6 and about 0.15 in case of AlF3 and chiolite, respectively. In case of various mixts., the mixing ratio is decided by calculation on the basis of the above molar ratios. The amt. of (C) is generally in a wt. ratio of (C) to (A) of 0.8 or more. The reaction temp. is 550W800, pref. 600W700°C.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14573678A JPS5571625A (en) | 1978-11-25 | 1978-11-25 | Production of low molar ratio fluoride |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14573678A JPS5571625A (en) | 1978-11-25 | 1978-11-25 | Production of low molar ratio fluoride |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5571625A true JPS5571625A (en) | 1980-05-29 |
Family
ID=15391944
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14573678A Pending JPS5571625A (en) | 1978-11-25 | 1978-11-25 | Production of low molar ratio fluoride |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5571625A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2667447C1 (en) * | 2017-09-21 | 2018-09-19 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Иркутский национальный исследовательский технический университет" | Method of treatment of the regeneration cryolite |
CN113149052A (en) * | 2021-04-16 | 2021-07-23 | 中南大学 | Method for treating fluorine-containing waste electrolyte |
-
1978
- 1978-11-25 JP JP14573678A patent/JPS5571625A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2667447C1 (en) * | 2017-09-21 | 2018-09-19 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Иркутский национальный исследовательский технический университет" | Method of treatment of the regeneration cryolite |
CN113149052A (en) * | 2021-04-16 | 2021-07-23 | 中南大学 | Method for treating fluorine-containing waste electrolyte |
CN113149052B (en) * | 2021-04-16 | 2022-07-26 | 中南大学 | Method for treating fluorine-containing waste electrolyte |
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