JPS5663000A - Chromic acid reduction processing method - Google Patents
Chromic acid reduction processing methodInfo
- Publication number
- JPS5663000A JPS5663000A JP13734979A JP13734979A JPS5663000A JP S5663000 A JPS5663000 A JP S5663000A JP 13734979 A JP13734979 A JP 13734979A JP 13734979 A JP13734979 A JP 13734979A JP S5663000 A JPS5663000 A JP S5663000A
- Authority
- JP
- Japan
- Prior art keywords
- chromic acid
- electrolytic solution
- liquid
- electrolytic
- processing method
- 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: To reduce chromic acid economically and effectively, by adding a liquid, where the iron metal is dissolved in the nitric acid liquid of pH within a specific range, to the electrolytic solution of the electrolytic processing means where chromic acid is generated.
CONSTITUTION: The electrolytic solution containing chromic acid is taken out through the electrolytic processing from the electrolytic processing machine. The liquid where the iron metal is dissolved in the nitric acid liquid of pH0W2 is added to this electrolytic solution. Otherwise, it may be added after neutralizing the electrolytic solution by caustic soda. Therefore, chromic acid is reduced into unsoluble chromium nitrate or into unsoluble chromium hydroxide due to neutralization. They are filtered and separated from each other and are used again as the electrolytic solution.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13734979A JPS5663000A (en) | 1979-10-24 | 1979-10-24 | Chromic acid reduction processing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13734979A JPS5663000A (en) | 1979-10-24 | 1979-10-24 | Chromic acid reduction processing method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5663000A true JPS5663000A (en) | 1981-05-29 |
JPS6128760B2 JPS6128760B2 (en) | 1986-07-02 |
Family
ID=15196562
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13734979A Granted JPS5663000A (en) | 1979-10-24 | 1979-10-24 | Chromic acid reduction processing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5663000A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4462911A (en) * | 1981-04-16 | 1984-07-31 | Andritz-Ruthner Industrieanlagen Aktiengesellschaft | Detoxification or decontamination of effluents and/or flue gases |
-
1979
- 1979-10-24 JP JP13734979A patent/JPS5663000A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4462911A (en) * | 1981-04-16 | 1984-07-31 | Andritz-Ruthner Industrieanlagen Aktiengesellschaft | Detoxification or decontamination of effluents and/or flue gases |
Also Published As
Publication number | Publication date |
---|---|
JPS6128760B2 (en) | 1986-07-02 |
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