JPS5590423A - Recovery method for iron from etching waste liquor - Google Patents
Recovery method for iron from etching waste liquorInfo
- Publication number
- JPS5590423A JPS5590423A JP16122278A JP16122278A JPS5590423A JP S5590423 A JPS5590423 A JP S5590423A JP 16122278 A JP16122278 A JP 16122278A JP 16122278 A JP16122278 A JP 16122278A JP S5590423 A JPS5590423 A JP S5590423A
- Authority
- JP
- Japan
- Prior art keywords
- fecl
- iron
- hydrochloric acid
- waste liquor
- etching waste
- 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
- Physical Water Treatments (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
PURPOSE: To recover a FeCl2 water solution with high concentration, of less impurities, efficiently by a method wherein FeCl3 and hydrochloric acid are extracted from a hydrochloric acid solution of a FeCl3 etching waste liquor by using trialkyl- phosphoric acid and water and iron are added to an extraction liquid.
CONSTITUTION: The concentration of hydrochloric acid is brought to approximate 1W2 normality by adding hydrochloric acid to a FeCl3 etching waste liquor containing a large quantity of iron and a small quantity of heavy metal components. FeCl3 and hydrochloric acid are shifted to an organic layer by extracting the solution with trialkyl-phosphoric acid such as tributyl phosphoric acid. When the organic layer is separated and water and iron are added to an extraction liquid separated, hydrochloric acid is reacted with iron and changed into FeCl2, and FeCl3 is also reduced to FeCl2. A FeCl2 water solution with high concentration, which impurities are little, can efficiently be recovered because heavy metal components are hardly extracted to the organic layer.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16122278A JPS6058177B2 (en) | 1978-12-28 | 1978-12-28 | Method for recovering iron from etching waste liquid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16122278A JPS6058177B2 (en) | 1978-12-28 | 1978-12-28 | Method for recovering iron from etching waste liquid |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5590423A true JPS5590423A (en) | 1980-07-09 |
JPS6058177B2 JPS6058177B2 (en) | 1985-12-18 |
Family
ID=15730936
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16122278A Expired JPS6058177B2 (en) | 1978-12-28 | 1978-12-28 | Method for recovering iron from etching waste liquid |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6058177B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59121123A (en) * | 1982-12-24 | 1984-07-13 | Toppan Printing Co Ltd | Reclamation of solution of ferric chloride |
JPS59196793A (en) * | 1983-04-20 | 1984-11-08 | Nishimura Watanabe Chiyuushiyutsu Kenkyusho:Kk | Recovery of liquid etchant |
WO2005120675A1 (en) * | 2004-06-08 | 2005-12-22 | Daeil Development Co., Ltd. | Method for treating of etching acid waste containing phosphoric acid, acetic acid and nitric acid |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0319986Y2 (en) * | 1985-11-05 | 1991-04-26 |
-
1978
- 1978-12-28 JP JP16122278A patent/JPS6058177B2/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59121123A (en) * | 1982-12-24 | 1984-07-13 | Toppan Printing Co Ltd | Reclamation of solution of ferric chloride |
JPS6144814B2 (en) * | 1982-12-24 | 1986-10-04 | Totsupan Insatsu Kk | |
JPS59196793A (en) * | 1983-04-20 | 1984-11-08 | Nishimura Watanabe Chiyuushiyutsu Kenkyusho:Kk | Recovery of liquid etchant |
JPS637115B2 (en) * | 1983-04-20 | 1988-02-15 | Nishimura Watanabe Chushutsu Kenkyusho Kk | |
WO2005120675A1 (en) * | 2004-06-08 | 2005-12-22 | Daeil Development Co., Ltd. | Method for treating of etching acid waste containing phosphoric acid, acetic acid and nitric acid |
Also Published As
Publication number | Publication date |
---|---|
JPS6058177B2 (en) | 1985-12-18 |
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