GB742195A - Improvements in or relating to the pickling of ferrous metals - Google Patents
Improvements in or relating to the pickling of ferrous metalsInfo
- Publication number
- GB742195A GB742195A GB11559/53A GB1155953A GB742195A GB 742195 A GB742195 A GB 742195A GB 11559/53 A GB11559/53 A GB 11559/53A GB 1155953 A GB1155953 A GB 1155953A GB 742195 A GB742195 A GB 742195A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hcl
- acid
- chamber
- pickling
- crystals
- 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 4
- -1 ferrous metals Chemical class 0.000 title abstract 2
- 229910052751 metal Inorganic materials 0.000 title abstract 2
- 239000002184 metal Substances 0.000 title abstract 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 9
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 4
- 239000002253 acid Substances 0.000 abstract 4
- 239000013078 crystal Substances 0.000 abstract 4
- 229910021577 Iron(II) chloride Inorganic materials 0.000 abstract 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 3
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 abstract 3
- 235000011149 sulphuric acid Nutrition 0.000 abstract 3
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 239000001117 sulphuric acid Substances 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 abstract 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 235000011837 pasties Nutrition 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
- 238000005979 thermal decomposition reaction Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/36—Regeneration of waste pickling liquors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S423/00—Chemistry of inorganic compounds
- Y10S423/01—Waste acid containing iron
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S423/00—Chemistry of inorganic compounds
- Y10S423/01—Waste acid containing iron
- Y10S423/02—Sulfuric acid
Abstract
<PICT:0742195/III/1> Ferrous metals are pickled with recovery of the pickling acid by pickling in a closed chamber with sulphuric acid and gaseous HCl., supersaturating the liquor with HCl to precipitate FeCl2, separating the crystals and heating to decompose them into HCl and iron oxide. The FeCl2 crystals may be washed with concentrated hydrochloric acid before the thermal decomposition. The apparatus comprises a pickling chamber 1 with acid sprays 3 playing on the material 4 to be treated. Gaseous HCl enters from a pipe 5. The pasty mass 6 consisting of acid and FeCl2 crystals passes to a reaction vessel 13 into which gaesous HCl is also injected. A centrifuge moves the acid for recycling through pipe 9 and the crystals pass into a furnace 10. HCl is given off and recycled through a condenser 11 to remove water. Iron oxide is removed from the chamber at 12. The reaction chamber 13 is optional. The concentration of sulphuric acid should not exceed 40 per cent. The ratio of FeSO4: H2O: H2SO4: H2O for optimum conditions is 1 : 1-1.45 : 8.8-1.42. The HCl : air ratio in the chamber should not be less than 1 : 4.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT742195X | 1953-02-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB742195A true GB742195A (en) | 1955-12-21 |
Family
ID=3680269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11559/53A Expired GB742195A (en) | 1953-02-16 | 1953-04-27 | Improvements in or relating to the pickling of ferrous metals |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2785999A (en) |
| DE (1) | DE1012138B (en) |
| FR (1) | FR1076832A (en) |
| GB (1) | GB742195A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3399964A (en) * | 1965-04-17 | 1968-09-03 | Mettallgesellschaft Ag | Process for regenerating used hydrochloric acid containing pickling liquors |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2865823A (en) * | 1957-06-04 | 1958-12-23 | United States Steel Corp | Method of reclaiming waste pickle liquor |
| US3082116A (en) * | 1961-11-20 | 1963-03-19 | Hooker Chemical Corp | Method of pickling and coating with vitreous enamel |
| US3442251A (en) * | 1965-10-18 | 1969-05-06 | Robert J Perkel | Apparatus for coating articles |
| US4165401A (en) * | 1977-08-29 | 1979-08-21 | Davis Walker Corporation | Recovery of suspended particulate metal from quench water |
| US5954071A (en) * | 1997-01-15 | 1999-09-21 | Magliocca; Charles Thomas | Parts washing apparatus with centrifugal filter |
| US6068707A (en) * | 1997-01-15 | 2000-05-30 | Magliocca; Charles T. | Portable parts washing apparatus with centrifugal filter |
| US20020005210A1 (en) * | 2000-01-05 | 2002-01-17 | Olsen Douglas R. | Regenerating spent pickling liquor |
| EP1293589A3 (en) * | 2001-09-17 | 2004-10-13 | Nissan Motor Company, Limited | Apparatus for pretreatment prior to painting |
| CN103771537B (en) * | 2014-01-17 | 2016-08-31 | 中国科学院过程工程研究所 | Ferrous sulfate heptahydrate is utilized to prepare four water ferrous chlorides, iron oxide red and the hydrochloric acid cyclic method of sulphuric acid |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE423246A (en) * | 1937-08-21 | |||
| DE703589C (en) * | 1940-01-26 | 1941-03-12 | Albert Sulfrian Dr Ing | Device for maintaining uniform composition and temperature of pickling baths in the iron processing industry |
-
1953
- 1953-04-17 DE DER11441A patent/DE1012138B/en active Pending
- 1953-04-27 GB GB11559/53A patent/GB742195A/en not_active Expired
- 1953-05-11 FR FR1076832D patent/FR1076832A/en not_active Expired
-
1955
- 1955-11-16 US US547220A patent/US2785999A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3399964A (en) * | 1965-04-17 | 1968-09-03 | Mettallgesellschaft Ag | Process for regenerating used hydrochloric acid containing pickling liquors |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1012138B (en) | 1957-07-11 |
| FR1076832A (en) | 1954-10-29 |
| US2785999A (en) | 1957-03-19 |
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