BR9807755A - Processo e aparelho para decapagem de produtos em uma liga metálica contendo ferro e produtos feitos de titánio e ligas do mesmo - Google Patents
Processo e aparelho para decapagem de produtos em uma liga metálica contendo ferro e produtos feitos de titánio e ligas do mesmoInfo
- Publication number
- BR9807755A BR9807755A BR9807755-4A BR9807755A BR9807755A BR 9807755 A BR9807755 A BR 9807755A BR 9807755 A BR9807755 A BR 9807755A BR 9807755 A BR9807755 A BR 9807755A
- Authority
- BR
- Brazil
- Prior art keywords
- ions
- products
- pickling
- alloys
- titanium
- Prior art date
Links
- 239000010936 titanium Substances 0.000 title abstract 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title abstract 15
- 238000005554 pickling Methods 0.000 title abstract 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title abstract 3
- 229910045601 alloy Inorganic materials 0.000 title abstract 3
- 239000000956 alloy Substances 0.000 title abstract 3
- 229910052742 iron Inorganic materials 0.000 title abstract 3
- 229910001092 metal group alloy Inorganic materials 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 3
- 229910052719 titanium Inorganic materials 0.000 title abstract 3
- 150000002500 ions Chemical class 0.000 abstract 7
- 150000001768 cations Chemical class 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 239000012071 phase Substances 0.000 abstract 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 1
- 239000007791 liquid phase Substances 0.000 abstract 1
- 239000012528 membrane Substances 0.000 abstract 1
- 229910017604 nitric acid Inorganic materials 0.000 abstract 1
- 239000007800 oxidant agent Substances 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 238000000926 separation method Methods 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
-
- 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
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/10—Other heavy metals
- C23G1/106—Other heavy metals refractory metals
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
"PROCESSO E APARELHO PARA DECAPAGEM DE PRODUTOS EM UMA LIGA METáLICA CONTENDO FERRO E PRODUTOS FEITOS DE TITâNIO E LIGAS DO MESMO". Processo para decapagem de produtos em uma liga metálica contendo ferro, e produtos feitos de titânio e ligas do mesmo, na ausência de ácido nítrico como agente oxidante, e para a recuperação das soluções esgotadas derivadas da decapagem compõe-se, das seguintes etapas: transferência de solução de decapagem, tanto como católito quando como anólito, em uma célula eletroquímica opcionalmente do tipo membrana para separa os íons Fe^ 2+^ (ou Ti^ 2+^) a serem removidos, dos íons Fe^ 3+^ (ou Ti^ 3+^ e Ti^ 4+^) a serem recuperados, obtidos por redução no cátodo dos íons Fe^ 3+^ que estão no católito a Fe^ 2+^ (ou dos íons Ti^ 3+^ e Ti^ 4+^ a Ti^ 2+^) e de oxidação no ânodo os íons Fe^ 2+^ (ou Ti^ 2+^) que estão no anólito a Fe^ 3+^ (a Ti^ 3+^ e Ti^ 4+^); tratamento da solução catolítica procedente da célula e enriquecida em íons Fe^ 2+^ (ou Ti^ 2+^) para permitir a separação em duas fases, uma primeira fase contendo os cátions metálicos Fe^ 2+^, Cr^ 3+^, Ni^ 2+^ (Ti^ 2+^) a serem removidos e uma segunda fase líquida privada dos referidos cátions metálicos a serem transferidos no banho de decapagem; e transferência da solução anolítica, procedente da célula e enriquecida em íons Fe^ 3+^ (Ti^ 3+^ e Ti^ 4+^), no banho de decapagem. é também o objeto da presente invenção um aparelho para esse fim.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT97RM000102A IT1290947B1 (it) | 1997-02-25 | 1997-02-25 | Metodo e dispositivo per il decapaggio di prodotti in lega metallica in assenza di acido nitrico e per il recupero di soluzioni esauste |
| PCT/IT1998/000038 WO1998038353A1 (en) | 1997-02-25 | 1998-02-25 | Method for pickling products of a metal alloy in absence of nitric and for recovering exhausted pickling solutions and apparatus therefore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR9807755A true BR9807755A (pt) | 2000-02-22 |
Family
ID=11404789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR9807755-4A BR9807755A (pt) | 1997-02-25 | 1998-02-25 | Processo e aparelho para decapagem de produtos em uma liga metálica contendo ferro e produtos feitos de titánio e ligas do mesmo |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US6221234B1 (pt) |
| EP (1) | EP0964940B1 (pt) |
| JP (1) | JP3282829B2 (pt) |
| AT (1) | ATE216438T1 (pt) |
| AU (1) | AU6114798A (pt) |
| BR (1) | BR9807755A (pt) |
| CA (1) | CA2281573A1 (pt) |
| DE (1) | DE69804949T2 (pt) |
| ES (1) | ES2179454T3 (pt) |
| IT (1) | IT1290947B1 (pt) |
| WO (1) | WO1998038353A1 (pt) |
| ZA (1) | ZA981559B (pt) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1297076B1 (it) * | 1997-11-24 | 1999-08-03 | Acciai Speciali Terni Spa | Metodo per il decapaggio di prodotti in acciaio |
| DE19850524C2 (de) * | 1998-11-03 | 2002-04-04 | Eilenburger Elektrolyse & Umwelttechnik Gmbh | Nitratfreies Recycling-Beizverfahren für Edelstähle |
| DE102012111105A1 (de) | 2012-11-19 | 2014-05-22 | Uwe Gräßel | Verfahren zur Rückgewinnung von säurehaltigen Beizlösungen |
| DE102019200832A1 (de) * | 2019-01-24 | 2020-07-30 | MTU Aero Engines AG | VERFAHREN ZUM ENTFERNEN VON Cr(VI)-IONEN AUS EINER WÄSSRIGEN ELEKTROLYTLÖSUNG |
| IT202000005848A1 (it) * | 2020-03-19 | 2021-09-19 | Tenova Spa | Processo per decapare e/o passivare un acciaio inossidabile. |
| WO2023148516A1 (en) * | 2022-02-02 | 2023-08-10 | C.I.E. - Compagnia Italiana Ecologia Srl | Process for free and combinated hydrofluoric acid recovery from stainless steel pickling bath |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50133125A (pt) * | 1974-04-10 | 1975-10-22 | ||
| DE3937438C2 (de) * | 1989-02-23 | 1998-01-29 | Wilfried Simmer | Verfahren zum Beizen von Stahl |
| FR2650303B1 (fr) * | 1989-07-26 | 1993-12-10 | Ugine Aciers Chatillon Gueugnon | Procede de decapage en bain acide de produits metalliques contenant du titane ou au moins un element chimique de la famille du titane |
| DE3943142A1 (de) * | 1989-12-28 | 1991-07-04 | Metallgesellschaft Ag | Elektrolyseverfahren zur aufbereitung metallionen enthaltender altbeizen oder produktstroeme |
| JP3308345B2 (ja) * | 1992-08-21 | 2002-07-29 | ユニチカ株式会社 | 電解槽の操作方法 |
| DE59504691D1 (de) * | 1994-03-07 | 1999-02-11 | Mib Metallurg Und Oberflaechen | Elektrolyseverfahren zum regenerieren einer eisen-iii-chlorid oder eisen-iii-sulfatlösung, insbesondere zum sprühätzen von stahl |
| DE4407448C2 (de) * | 1994-03-07 | 1998-02-05 | Mib Metallurg Und Oberflaechen | Elektrolyseverfahren zum Regenerieren einer Eisen-III-Chlorid- oder Eisen-III-Sulfatlösung, insbesondere zum Sprühätzen von Stahl |
| DE4435232C2 (de) * | 1994-10-04 | 1997-09-25 | Hahnewald Gmbh Chemisch Physik | Verfahren zur Regenerierung von flußsäurehaltigen Beizlösungen |
| IT1282979B1 (it) * | 1996-05-09 | 1998-04-03 | Novamax Itb S R L | Procedimento per il decapaggio dell'acciaio nel quale la ossidazione dello ione ferroso formatosi viene effettuata per via elettrochimica |
-
1997
- 1997-02-25 IT IT97RM000102A patent/IT1290947B1/it active IP Right Grant
-
1998
- 1998-02-25 ZA ZA981559A patent/ZA981559B/xx unknown
- 1998-02-25 JP JP53748498A patent/JP3282829B2/ja not_active Expired - Fee Related
- 1998-02-25 AU AU61147/98A patent/AU6114798A/en not_active Abandoned
- 1998-02-25 ES ES98905624T patent/ES2179454T3/es not_active Expired - Lifetime
- 1998-02-25 AT AT98905624T patent/ATE216438T1/de not_active IP Right Cessation
- 1998-02-25 WO PCT/IT1998/000038 patent/WO1998038353A1/en active IP Right Grant
- 1998-02-25 BR BR9807755-4A patent/BR9807755A/pt unknown
- 1998-02-25 DE DE69804949T patent/DE69804949T2/de not_active Expired - Fee Related
- 1998-02-25 CA CA002281573A patent/CA2281573A1/en not_active Abandoned
- 1998-02-25 EP EP98905624A patent/EP0964940B1/en not_active Expired - Lifetime
- 1998-02-25 US US09/367,938 patent/US6221234B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0964940B1 (en) | 2002-04-17 |
| EP0964940A1 (en) | 1999-12-22 |
| ITRM970102A1 (it) | 1998-08-25 |
| WO1998038353A1 (en) | 1998-09-03 |
| DE69804949D1 (de) | 2002-05-23 |
| JP3282829B2 (ja) | 2002-05-20 |
| ZA981559B (en) | 1998-08-27 |
| AU6114798A (en) | 1998-09-18 |
| DE69804949T2 (de) | 2002-11-28 |
| ES2179454T3 (es) | 2003-01-16 |
| JP2000511594A (ja) | 2000-09-05 |
| IT1290947B1 (it) | 1998-12-14 |
| ATE216438T1 (de) | 2002-05-15 |
| CA2281573A1 (en) | 1998-09-03 |
| US6221234B1 (en) | 2001-04-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 3A,4A,5A,6A7A E 8A ANUIDADES. |