WO1999014165A1 - Verfahren zur aufbereitung von metallhaltigen säurelösungen aus oberflächenbehandlungsanlagen - Google Patents
Verfahren zur aufbereitung von metallhaltigen säurelösungen aus oberflächenbehandlungsanlagen Download PDFInfo
- Publication number
- WO1999014165A1 WO1999014165A1 PCT/DE1998/002700 DE9802700W WO9914165A1 WO 1999014165 A1 WO1999014165 A1 WO 1999014165A1 DE 9802700 W DE9802700 W DE 9802700W WO 9914165 A1 WO9914165 A1 WO 9914165A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- metal
- acids
- process stream
- solution
- metal salt
- 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.)
- Ceased
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
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G1/00—Methods of preparing compounds of metals not covered by subclasses C01B, C01C, C01D, or C01F, in general
Definitions
- the invention relates to a process for the preparation of metal-containing acid solutions from surface treatment plants, which in particular contain HN0 3 , HN0 3 / HF, H 2 S0 4 / HF, HF, HC1 etc.
- the object of the invention is to provide a one- to multi-stage process with which the free and bound acids are practically completely recovered and returned to the surface treatment process.
- the method according to the invention also improves the quality of the surface treatment solutions and thus also reduces the surface quality of the treated materials and the environmental impact.
- inventive method is characterized by simplified handling and process control with a simultaneous reduction in operating and investment costs.
- An acidic process stream that contains small residual amounts of dissolved metal salts and that directly or after further concentration or after use as an absorption and condensation solution in the Process step B or D is returned to the surface treatment process.
- a metal salt-containing process stream which contains smaller residual amounts of free acids and which is fed to a further treatment, the free acids and also the bound acids present as metal salts being recovered.
- the resulting filtrate which still contains dissolved metal salts, is returned to the 1st process stage and treated again.
- the metal-containing salt stream from the 1st process stage and / or the separated metal salts from stage A are mixed with sulfuric acid.
- the weaker acids such as HF, HC1 or HN0 3 are released from the metal salts.
- the sulfuric acid-containing metal salt solution is then fed to a crystallization, the metals being crystallized out as metal sulfates.
- the metal sulfate crystals are separated and disposed of or recycled as raw materials or sent for further processing.
- the filtrate containing sulfuric acid, which still contains dissolved metal salts, is returned to the stripping / distillation process, where it is treated again.
- stage B The metal sulfates from stage B are dissolved and subjected to electrolysis, z. B. the metals contained such as Ni, Cr, Cu, etc. are separated as elements.
- the separated metals can be reused as raw materials in the metal manufacturing process.
- the resulting highly concentrated Fe III sulfate solution can be used as a chemical in water or wastewater treatment.
- the metal-containing process stream of the 1st process stage, the metal salt crystals of stage A and / or the metal sulfates of stage B are fed to a thermal process, e.g. the PYROMAS process or the fluidized bed process.
- the metal salts are split into the respective metal oxides and the respective acids and / or sulfur trioxide or dioxide.
- the metal oxides are separated and can be used as raw materials.
- the exhaust gas / pyrolysis or roasting gas enriched with the acids and / or sulfur trioxide / dioxide is fed to a condensation / absorption process.
- the respective acids or acid mixtures are formed by the condensation / absorption process can be returned directly or after an additional concentration in the surface treatment process or in the case of sulfuric acid in stage B.
- the metal-containing process stream of the 1st process stage, the metal salt crystals of stage A and / or the metal sulfates of stage B are fed to a further treatment process in which in the 1st step neutralization with lye such as e.g. Potassium hydroxide solution, sodium hydroxide solution and / or sodium carbonate.
- lye such as e.g. Potassium hydroxide solution, sodium hydroxide solution and / or sodium carbonate.
- the metals are precipitated, separated and dewatered as metal hydroxides.
- the metal-containing filter cake formed can then be used as a raw material immediately after washing to remove the residual salts, drying and / or calcining.
- the filtrate obtained during the neutralization and separation of the solids, which contains the formed, dissolved salts of the respective acids and the neutralizing agents used, is then subjected to electrodialysis, based on bipolar membranes, the salts being split into the respective acids and alkalis .
- the acids formed can be returned to the surface treatment process directly or after concentration.
- the lye formed in each case can be used again as a neutralizing agent.
- the different residues obtained as end products in the individual process steps can either be returned directly to production as raw materials or only after further processing.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU10221/99A AU1022199A (en) | 1997-09-12 | 1998-09-11 | Method for treating metal containing acid solutions from surface treatment installations |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19740164.3 | 1997-09-12 | ||
| DE1997140164 DE19740164A1 (de) | 1997-09-12 | 1997-09-12 | Verfahren zur Aufbereitung von metallhaltigen Säurelösungen aus Oberflächenbehandlungsanlagen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1999014165A1 true WO1999014165A1 (de) | 1999-03-25 |
| WO1999014165B1 WO1999014165B1 (de) | 1999-05-20 |
Family
ID=7842167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE1998/002700 Ceased WO1999014165A1 (de) | 1997-09-12 | 1998-09-11 | Verfahren zur aufbereitung von metallhaltigen säurelösungen aus oberflächenbehandlungsanlagen |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU1022199A (de) |
| DE (1) | DE19740164A1 (de) |
| WO (1) | WO1999014165A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0968756A1 (de) * | 1998-07-02 | 2000-01-05 | Umweltanalystisches Zentrum Gröditz GmbH | Verfahren zur Aufbereitung metallhaltiger Mineralsäuren |
| DE102013108375A1 (de) * | 2013-01-31 | 2014-07-31 | Thomas König | Verfahren zum Aufbereiten eines Beiz- und/oder Eloxalbades und Eloxieranordnung |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003035934A1 (en) * | 2001-10-25 | 2003-05-01 | Eco-Tec Limited | Process and apparatus for recovery of peroxide containing pickling solutions |
| DE10231308C5 (de) * | 2002-07-10 | 2009-10-15 | Cmi Uvk Gmbh | Verfahren und Vorrichtung zum Recyceln von Edelstahl-Beizbädern |
| DE102013105177A1 (de) | 2013-05-21 | 2014-11-27 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Gewinnung metallischer Anteile sowie von metallabgereichertem Material aus metallhaltigen Materialien |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1546180A1 (de) * | 1964-12-04 | 1970-10-08 | Pawlek Dr Ing Franz | Verfahren zur Regenerierung der Schwefelsaeure in verbrauchten Beizloesungen |
| DE2553416A1 (de) * | 1975-11-27 | 1977-06-02 | Hager & Elsaesser | Verfahren zum abtrennen von geloesten stoffen aus einer loesung |
| US4382916A (en) * | 1981-10-07 | 1983-05-10 | Voss Steel Corporation | Method of preparing hydrochloric acid and high purity ferrous sulfate hydrate crystals from hydrochloric acid waste pickle liquor |
| JPS62127485A (ja) * | 1985-11-26 | 1987-06-09 | Nisshin Steel Co Ltd | 鉄鋼の塩酸酸洗廃液より酸化鉄を回収する方法 |
| EP0269234A1 (de) * | 1986-10-14 | 1988-06-01 | AlliedSignal Inc. | Rückgewinnung von Säuren oder säure- und salzhaltigen Lösungen |
| JPS63291608A (ja) * | 1987-05-22 | 1988-11-29 | Tokuyama Soda Co Ltd | 酸廃液の再生方法 |
| EP0398863A1 (de) * | 1989-05-17 | 1990-11-22 | BÖHLER Gesellschaft m.b.H. | Verfahren zur Rückgewinnung von Metallen bzw. Metalloxiden und Säuren aus Salzlösungen, insbesondere aus Beizsäuren oder Beizsäuregemischen |
| US5562828A (en) * | 1995-05-19 | 1996-10-08 | Olsen; Douglas R. | Method and apparatus for recovering acid and metal salts from pricklining liquors |
| EP0843025A1 (de) * | 1996-11-15 | 1998-05-20 | Keramchemie GmbH | Verfahren zur Regenerierung einer verbrauchten Beizlösung |
-
1997
- 1997-09-12 DE DE1997140164 patent/DE19740164A1/de not_active Withdrawn
-
1998
- 1998-09-11 AU AU10221/99A patent/AU1022199A/en not_active Abandoned
- 1998-09-11 WO PCT/DE1998/002700 patent/WO1999014165A1/de not_active Ceased
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1546180A1 (de) * | 1964-12-04 | 1970-10-08 | Pawlek Dr Ing Franz | Verfahren zur Regenerierung der Schwefelsaeure in verbrauchten Beizloesungen |
| DE2553416A1 (de) * | 1975-11-27 | 1977-06-02 | Hager & Elsaesser | Verfahren zum abtrennen von geloesten stoffen aus einer loesung |
| US4382916A (en) * | 1981-10-07 | 1983-05-10 | Voss Steel Corporation | Method of preparing hydrochloric acid and high purity ferrous sulfate hydrate crystals from hydrochloric acid waste pickle liquor |
| JPS62127485A (ja) * | 1985-11-26 | 1987-06-09 | Nisshin Steel Co Ltd | 鉄鋼の塩酸酸洗廃液より酸化鉄を回収する方法 |
| EP0269234A1 (de) * | 1986-10-14 | 1988-06-01 | AlliedSignal Inc. | Rückgewinnung von Säuren oder säure- und salzhaltigen Lösungen |
| JPS63291608A (ja) * | 1987-05-22 | 1988-11-29 | Tokuyama Soda Co Ltd | 酸廃液の再生方法 |
| EP0398863A1 (de) * | 1989-05-17 | 1990-11-22 | BÖHLER Gesellschaft m.b.H. | Verfahren zur Rückgewinnung von Metallen bzw. Metalloxiden und Säuren aus Salzlösungen, insbesondere aus Beizsäuren oder Beizsäuregemischen |
| US5562828A (en) * | 1995-05-19 | 1996-10-08 | Olsen; Douglas R. | Method and apparatus for recovering acid and metal salts from pricklining liquors |
| EP0843025A1 (de) * | 1996-11-15 | 1998-05-20 | Keramchemie GmbH | Verfahren zur Regenerierung einer verbrauchten Beizlösung |
Non-Patent Citations (2)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 011, no. 357 (C - 458) 20 November 1987 (1987-11-20) * |
| PATENT ABSTRACTS OF JAPAN vol. 013, no. 119 (C - 579) 23 March 1989 (1989-03-23) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0968756A1 (de) * | 1998-07-02 | 2000-01-05 | Umweltanalystisches Zentrum Gröditz GmbH | Verfahren zur Aufbereitung metallhaltiger Mineralsäuren |
| DE102013108375A1 (de) * | 2013-01-31 | 2014-07-31 | Thomas König | Verfahren zum Aufbereiten eines Beiz- und/oder Eloxalbades und Eloxieranordnung |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1999014165B1 (de) | 1999-05-20 |
| DE19740164A1 (de) | 1999-03-18 |
| AU1022199A (en) | 1999-04-05 |
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