GB593697A - Improvements relating to the pickling or descaling of ferrous metal - Google Patents
Improvements relating to the pickling or descaling of ferrous metalInfo
- Publication number
- GB593697A GB593697A GB2180544A GB2180544A GB593697A GB 593697 A GB593697 A GB 593697A GB 2180544 A GB2180544 A GB 2180544A GB 2180544 A GB2180544 A GB 2180544A GB 593697 A GB593697 A GB 593697A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pickling
- ferrous metal
- ammonium sulphate
- descaling
- improvements relating
- 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
- 238000005554 pickling Methods 0.000 title abstract 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 title abstract 2
- 239000002184 metal Substances 0.000 title abstract 2
- 229910052751 metal Inorganic materials 0.000 title abstract 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 abstract 2
- 239000001166 ammonium sulphate Substances 0.000 abstract 2
- 235000011130 ammonium sulphate Nutrition 0.000 abstract 2
- XKUUMWKWUZRRPD-UHFFFAOYSA-N heptan-2-amine;sulfuric acid Chemical compound [O-]S([O-])(=O)=O.CCCCCC(C)[NH3+].CCCCCC(C)[NH3+] XKUUMWKWUZRRPD-UHFFFAOYSA-N 0.000 abstract 2
- 238000001556 precipitation Methods 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 1
- ZLXPLDLEBORRPT-UHFFFAOYSA-M [NH4+].[Fe+].[O-]S([O-])(=O)=O Chemical compound [NH4+].[Fe+].[O-]S([O-])(=O)=O ZLXPLDLEBORRPT-UHFFFAOYSA-M 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 239000006227 byproduct Substances 0.000 abstract 1
- 239000000571 coke Substances 0.000 abstract 1
- 230000001172 regenerating Effects 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 1
- 239000001117 sulphuric acid Substances 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/14—Sulfates
Abstract
A method of regenerating spent pickling liquor which has been used to descale ferrous metal by contact in a sulphuric acid bath, comprises adding ammonium sulphate to cause precipitation of an iron ammonium sulphate. The temperature may be reduced to below 20 DEG C. to assist precipitation. After removal of the sulphate, acid and water may be added and the liquor used in further pickling operations. The added ammonium sulphate may be obtained as a by-product from coke ovens and auxiliary plant in steel works. A quantitative example is given.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB593697A true GB593697A (en) | 1947-10-23 |
Family
ID=1736489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2180544A Expired GB593697A (en) | 1944-11-07 | Improvements relating to the pickling or descaling of ferrous metal |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB593697A (en) |
-
1944
- 1944-11-07 GB GB2180544A patent/GB593697A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB860709A (en) | A new or improved method of pickling alloy steels | |
| GB1042122A (en) | Process for the pre-treatment of metal surfaces before enamelling | |
| GB735426A (en) | Improvements in or relating to the pickling of ferrous metals | |
| GB593697A (en) | Improvements relating to the pickling or descaling of ferrous metal | |
| GB522177A (en) | Improvements relating to removing scale from metal | |
| GB655079A (en) | Improvements in or relating to the production of phosphate coatings | |
| US2598889A (en) | Pickling chromium alloys | |
| GB730897A (en) | Process of pickling metals | |
| ES337289A1 (en) | Process for pickling iron and steel and regenerating pickle liquor | |
| GB931003A (en) | Process for treating metal articles | |
| GB287912A (en) | Improvements in processes for controlling the action of pickling acids on metals | |
| GB597754A (en) | Process for treating ferrous sheets and other ferrous articles | |
| FR792440A (en) | Process for regenerating ferrous metal pickling baths with phosphoric acid | |
| GB916454A (en) | Composition and method for cleaning aluminium | |
| GB604379A (en) | Process for the treatment of sheet iron | |
| GB599784A (en) | Improvements in or relating to processes for the production of protective coatings on metal surfaces | |
| GB826172A (en) | Improvements in or relating to the removal of contaminating material from, and the smoothing of, metal surfaces | |
| GB701478A (en) | Improvements in or relating to a process for the electrolytic treatment of articles of iron or iron alloys | |
| GB991556A (en) | Improvements in or relating to a process for surface treatment of metals | |
| GB750496A (en) | Improvements in or relating to spent pickling acids | |
| GB963547A (en) | Process for the enamelling of iron articles with vitreous enamel | |
| ES426884A1 (en) | Procedure of metal phosphatation. (Machine-translation by Google Translate, not legally binding) | |
| ES347796A1 (en) | Inhibition of corrosion of metallic surfaces | |
| GB163868A (en) | Improvements in metal pickling or cleaning | |
| GB418994A (en) | Process of removing rust from and picking iron and steel |