GB190300423A - Improvements in the Treatment of Waste Pickle Liquor for the Removal or Utilisation of Free Acid Contained therein. - Google Patents
Improvements in the Treatment of Waste Pickle Liquor for the Removal or Utilisation of Free Acid Contained therein.Info
- Publication number
- GB190300423A GB190300423A GB190300423DA GB190300423A GB 190300423 A GB190300423 A GB 190300423A GB 190300423D A GB190300423D A GB 190300423DA GB 190300423 A GB190300423 A GB 190300423A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- oxide
- sulphate
- precipitated
- free
- 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.)
- Expired
Links
Landscapes
- Removal Of Specific Substances (AREA)
Abstract
423. Hemingway, H. W. Jan. 7. Iron sulphate, chloride and oxide.-Consists in removing or utilizing the free sulphuric or hydrochloric acid contained in the waste pickling-liquors used in treatirg iron and steel preparatory to galvanizing. The sulphuric-acid liquors, containing ferrous sulphate, are treated with carbonate of calcium, strontium, or barium, or preferably iron carbonate, such as spathose or spathic ore, whereby any ferric salt is precipitated as oxide, and the free acid either precipitated as an alkaline-earth sulphate or converted into ferrous sulphate, which may be crystallized out on boiling. The hydrochloric-acid liquors may be treated similarly, but in this case the alkaline-earth salt remains in solution with ferrous chloride, which may be removed as oxide by adding caustic soda. The precipitated oxide, obtained as above, may be added to another portion of waste containing ferrous sulphate and free sulphuric acid, neutralizing as much free acid as desired and forming more ferrous sulphate.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190300423T | 1903-01-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190300423A true GB190300423A (en) | 1903-12-10 |
Family
ID=32540567
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190300423D Expired GB190300423A (en) | 1903-01-07 | 1903-01-07 | Improvements in the Treatment of Waste Pickle Liquor for the Removal or Utilisation of Free Acid Contained therein. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190300423A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2656282A (en) * | 1951-01-26 | 1953-10-20 | Wheatland Tube Co | Method for the production of iron oxide from ferrous solutions |
EP3231537A1 (en) | 2016-03-25 | 2017-10-18 | Borcelik Celik San. Tic. A.S. | Production of pure iron powder from pickling solutions |
-
1903
- 1903-01-07 GB GB190300423D patent/GB190300423A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2656282A (en) * | 1951-01-26 | 1953-10-20 | Wheatland Tube Co | Method for the production of iron oxide from ferrous solutions |
EP3231537A1 (en) | 2016-03-25 | 2017-10-18 | Borcelik Celik San. Tic. A.S. | Production of pure iron powder from pickling solutions |
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