DE3375026D1 - Process for continuously regenerating a flux bath in the hot tip galvanizing of steel work pieces - Google Patents
Process for continuously regenerating a flux bath in the hot tip galvanizing of steel work piecesInfo
- Publication number
- DE3375026D1 DE3375026D1 DE8383400049T DE3375026T DE3375026D1 DE 3375026 D1 DE3375026 D1 DE 3375026D1 DE 8383400049 T DE8383400049 T DE 8383400049T DE 3375026 T DE3375026 T DE 3375026T DE 3375026 D1 DE3375026 D1 DE 3375026D1
- Authority
- DE
- Germany
- Prior art keywords
- solution
- flow
- iron
- tank
- oxygenated water
- 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
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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/30—Fluxes or coverings on molten baths
Abstract
1. A process for regenerating the content of fluxing tanks, which is formed by chlorides of zinc and ammonium in aqueous solution in which steel components are dipped prior to galvanisation, the process comprising, in order to remove the harmful dissolved iron, taking off in a closed circuit the content of the tank which is maintained at a pH-value of between 3 and 6 and adding oxygenated water to the material taken off so as to cause all the iron present to go to the trivalent state and form insoluble sludge of ferric hydroxide oxide which is removed prior to returning the solution to the tank, characterised by taking off a flow at a practically constant flow rate, simultaneously adding to said flow flows of oxygenated water and ammonia which are respectively regulated in such a way that the oxygenated water is substantially in stoichiometric equilibrium with the iron to be oxidised and the pH-value is maintained at between 3,9 and 4,1, allowing the formation of flakes of ferric hydroxide to be concluded in the flow in a practically non-turbulent flow condition, and transferring the flow into a settlement zone where it circulates upwardly in such a way that the hydroxide sludge accumulates at the bottom from which it is discharged, and collecting at the surface the solution of chloride of zinc and ammonium from which iron has been removed, said solution being heated in the settlement zone by the application of heat at the surface at a temperature which is at least equal to that of the solution in the tank.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8200605A FR2520007B1 (en) | 1982-01-15 | 1982-01-15 | PROCESS FOR THE CONTINUOUS REGENERATION OF FLUXING BATHS IN STEEL GALVANIZATION OF STEEL PARTS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3375026D1 true DE3375026D1 (en) | 1988-02-04 |
Family
ID=9270028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE8383400049T Expired DE3375026D1 (en) | 1982-01-15 | 1983-01-10 | Process for continuously regenerating a flux bath in the hot tip galvanizing of steel work pieces |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0084478B1 (en) |
| AT (1) | ATE31557T1 (en) |
| DE (1) | DE3375026D1 (en) |
| FR (1) | FR2520007B1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1006337A3 (en) * | 1992-11-06 | 1994-07-26 | Mechim Engineering Sa | Method for maintaining a bath fluxing a line galvanizing. |
| US5810946A (en) * | 1997-02-04 | 1998-09-22 | Metals Recycling Technologies Corp. | Method for the production of galvanizing fluxes and flux feedstocks |
| DE10134812C2 (en) * | 2001-07-17 | 2003-06-26 | Goldschmidt Ag Th | De-icing flux salt composition for flux baths |
| DE102012013588A1 (en) * | 2012-06-15 | 2013-12-19 | Ram Engineering + Anlagenbau Gmbh | Plant for the continuous treatment of iron containing flux |
| US10316400B1 (en) * | 2017-05-11 | 2019-06-11 | Beta Control Systems, Incorporated | Systems and methods for removing impurities from galvanizing flux solution |
| EP3530773B1 (en) * | 2018-02-23 | 2021-04-07 | RAM Engineering + Anlagenbau GmbH | Installation for the treatment of flux for steel pretreatment and method for operating the installation |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH569796A5 (en) * | 1970-06-16 | 1975-11-28 | Didier Werke Ag | |
| FR2277910A1 (en) * | 1974-07-09 | 1976-02-06 | Degremont Sa | Removing iron salt contaminants from galvanising baths - by oxidn. at acid pH and filtering off ferric hydroxide |
| BE840955A (en) * | 1976-04-21 | 1976-08-16 | PROCESS FOR REGENARATION OF GALVANIZATION BATHS AND INSTALLATION FOR ITS IMPLEMENTATION | |
| DE2633872C2 (en) * | 1976-07-28 | 1978-03-30 | Preussag Ag Metall, 3380 Goslar | Process for the preparation of a watery flux liquor for hot dip galvanizing |
-
1982
- 1982-01-15 FR FR8200605A patent/FR2520007B1/en not_active Expired - Lifetime
-
1983
- 1983-01-10 DE DE8383400049T patent/DE3375026D1/en not_active Expired
- 1983-01-10 AT AT83400049T patent/ATE31557T1/en not_active IP Right Cessation
- 1983-01-10 EP EP83400049A patent/EP0084478B1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2520007A1 (en) | 1983-07-22 |
| FR2520007B1 (en) | 1990-11-02 |
| EP0084478B1 (en) | 1987-12-23 |
| EP0084478A3 (en) | 1983-08-24 |
| ATE31557T1 (en) | 1988-01-15 |
| EP0084478A2 (en) | 1983-07-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8364 | No opposition during term of opposition | ||
| 8327 | Change in the person/name/address of the patent owner |
Owner name: VIEILLE MONTAGNE FRANCE S.A., BAGNOLET, FR |
|
| 8328 | Change in the person/name/address of the agent |
Free format text: DEUFEL, P., DIPL.-WIRTSCH.-ING.DR.RER.NAT. HERTEL, W., DIPL.-PHYS. RUTETZKI, A., DIPL.-ING.UNIV. RUCKER, E., DIPL.-CHEM. UNIV. DR.RER.NAT. HUBER, B., DIPL.-BIOL. DR.RER.NAT. BECKER, E., DR.RER.NAT. STEIL, C., DIPL.-ING., 8000 MUENCHEN KURIG, T., DIPL.-PHYS., PAT.-ANWAELTE, 8200 ROSENHEIM |
|
| 8327 | Change in the person/name/address of the patent owner |
Owner name: N.V. UNION MINIERE S.A., CHARLEROI, BE |
|
| 8339 | Ceased/non-payment of the annual fee |