JPS55145200A - Refining method for electrolytic polishing waste liquid - Google Patents
Refining method for electrolytic polishing waste liquidInfo
- Publication number
- JPS55145200A JPS55145200A JP5341379A JP5341379A JPS55145200A JP S55145200 A JPS55145200 A JP S55145200A JP 5341379 A JP5341379 A JP 5341379A JP 5341379 A JP5341379 A JP 5341379A JP S55145200 A JPS55145200 A JP S55145200A
- Authority
- JP
- Japan
- Prior art keywords
- waste liquid
- electrolytic polishing
- alf
- alkali
- solution
- 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
Landscapes
- Removal Of Specific Substances (AREA)
Abstract
PURPOSE: To deposit and separate Al part as a difficult soluble aluminum fluoride salt, such as Na3AlF6 etc., by adding one kind or more of caustic alkali or (acidic) alkali fluouide and HF solution to electrolytic polishing waste liquid of Al (alloy).
CONSTITUTION: One kind or more of caustic alkali, such as NaOH etc., or (acidic) alkali fluoride and HF solution, are added to electrolytic polishing waste liquid of Al (alloy) stirring about 30 minutes or more and reaction is carried out at 0W 70°C. Hereby, Al part is deposited and separated as difficult soluble compound, such as Na3AlF6, K3AlF6, Na5Al3F14 or K3Al2F6 etc. By the above method, fil- tering operation is easily carried out because deposited precipitate has a good filtering property and also, only a small amounts of H2SO4, H3PO4 and chromic acid in the waste liquid, are contained in the cake. Moreover, refined solution is circulated after concentrating to a suitable concentration for the electrolytic polishing.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5341379A JPS55145200A (en) | 1979-05-02 | 1979-05-02 | Refining method for electrolytic polishing waste liquid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5341379A JPS55145200A (en) | 1979-05-02 | 1979-05-02 | Refining method for electrolytic polishing waste liquid |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55145200A true JPS55145200A (en) | 1980-11-12 |
JPS5611400B2 JPS5611400B2 (en) | 1981-03-13 |
Family
ID=12942137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5341379A Granted JPS55145200A (en) | 1979-05-02 | 1979-05-02 | Refining method for electrolytic polishing waste liquid |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55145200A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3929316A1 (en) * | 2020-06-22 | 2021-12-29 | Möller Chemie GmbH & Co. KG | Method for regenerating an exhausted, sulfuric acid containing treatment solution from aluminum refining |
-
1979
- 1979-05-02 JP JP5341379A patent/JPS55145200A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3929316A1 (en) * | 2020-06-22 | 2021-12-29 | Möller Chemie GmbH & Co. KG | Method for regenerating an exhausted, sulfuric acid containing treatment solution from aluminum refining |
Also Published As
Publication number | Publication date |
---|---|
JPS5611400B2 (en) | 1981-03-13 |
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