ATE368758T1 - Wirtschaftliches verfahren zur wiederherstellung des oxidationspotentials einer beizlösung - Google Patents

Wirtschaftliches verfahren zur wiederherstellung des oxidationspotentials einer beizlösung

Info

Publication number
ATE368758T1
ATE368758T1 AT02807707T AT02807707T ATE368758T1 AT E368758 T1 ATE368758 T1 AT E368758T1 AT 02807707 T AT02807707 T AT 02807707T AT 02807707 T AT02807707 T AT 02807707T AT E368758 T1 ATE368758 T1 AT E368758T1
Authority
AT
Austria
Prior art keywords
iii
optimum
concentration
actual
weight ratio
Prior art date
Application number
AT02807707T
Other languages
English (en)
Inventor
Giorgio Cortellaro
Paolo Giordani
Ioannis Demertzis
Original Assignee
Henkel Kgaa
Thyssenkrupp Acciai Speciali
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Henkel Kgaa, Thyssenkrupp Acciai Speciali filed Critical Henkel Kgaa
Application granted granted Critical
Publication of ATE368758T1 publication Critical patent/ATE368758T1/de

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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
    • 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
    • C23G1/08—Iron or steel
    • C23G1/086—Iron or steel solutions containing HF
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (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)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
AT02807707T 2002-08-30 2002-08-30 Wirtschaftliches verfahren zur wiederherstellung des oxidationspotentials einer beizlösung ATE368758T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2002/009730 WO2004020700A1 (en) 2002-08-30 2002-08-30 An economic method for restoring the oxidation potential of a pickling solution

Publications (1)

Publication Number Publication Date
ATE368758T1 true ATE368758T1 (de) 2007-08-15

Family

ID=31970239

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02807707T ATE368758T1 (de) 2002-08-30 2002-08-30 Wirtschaftliches verfahren zur wiederherstellung des oxidationspotentials einer beizlösung

Country Status (6)

Country Link
EP (1) EP1552038B1 (de)
AT (1) ATE368758T1 (de)
AU (1) AU2002333772A1 (de)
DE (1) DE60221584T2 (de)
ES (1) ES2292857T3 (de)
WO (1) WO2004020700A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1394958B1 (it) * 2009-02-17 2012-07-27 Condoroil Impianti Srl Processo di ossidazione catalitica del ferro bivalente a ferro trivalente nei bagni di decapaggio per acciai inossidabili a base di acido cloridrico e/o sue miscele con altri acidi organici e inorganici.
EP3771749A1 (de) * 2019-07-29 2021-02-03 Ewald Dörken Ag Verfahren zur passivierung metallischer substrate
JP7176137B2 (ja) * 2020-01-09 2022-11-21 Ｐｒｉｍｅｔａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｊａｐａｎ株式会社 鋼板の酸洗方法及び酸洗装置
IT202000005848A1 (it) 2020-03-19 2021-09-19 Tenova Spa Processo per decapare e/o passivare un acciaio inossidabile.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1243406B (it) * 1990-12-03 1994-06-10 Vittorio Degara Sistema di ossidazione degli ioni ferro nelle soluzioni prive di acidonitrico per il trattamento superficiale di decapaggio o di passivazione di prodotti metallici
EP0795628B1 (de) * 1996-03-14 2001-05-23 CONDOROIL IMPIANTI s.r.l. Beizen von rostfreien Stahlen mit kontinuierliche katalytische Oxidation der Beizlösung
DE19755350A1 (de) * 1997-12-12 1999-06-17 Henkel Kgaa Verfahren zum Beizen und Passivieren von Edelstahl
IT1303814B1 (it) * 1998-12-02 2001-02-23 Henkel Kgaa Apparecchiatura e metodo per controllare processi di decapaggio peracciaio.

Also Published As

Publication number Publication date
DE60221584T2 (de) 2008-04-17
EP1552038A1 (de) 2005-07-13
DE60221584D1 (de) 2007-09-13
EP1552038B1 (de) 2007-08-01
ES2292857T3 (es) 2008-03-16
AU2002333772A1 (en) 2004-03-19
WO2004020700A1 (en) 2004-03-11

Similar Documents

Publication Publication Date Title
KR970062075A (ko) 스틸 조각 및 특히 스테인레스 스틸 쉬트 스트립의 산세 방법
FI910594A0 (fi) Menetelmä teräsmateriaalien, erityisesti ruostumattoman teräksen peittaamiseksi ja puhdistamiseksi
ATE478975T1 (de) Lösung und verfahren zum beizen von rostfreiem stahl
DE69617689D1 (de) Entfernung von ameisensäure und formaldehyd aus abwasserströmen.
ATE146160T1 (de) Verfahren zur herstellung von chlordioxid
AU5744599A (en) Process for electrolytic pickling using nitric acid-free solutions
DE60134472D1 (de) Oxidationsverfahren zur herstellung des zwischenproduktes 6.alpha.,9.alpha.-difluoro-11.beta.,17.alpone 17.beta.-karbonsäure
EP1172336A3 (de) Behandlung von organsiche Abfälle enthaltendem Wasser mit Ammoniumnitrat
ATE368758T1 (de) Wirtschaftliches verfahren zur wiederherstellung des oxidationspotentials einer beizlösung
GB1492068A (en) Method for removing sulphur dioxide from an exhaust gas
US4851092A (en) Process for electrolytically pickling chromium-containing stainless steel
AR010966A1 (es) Procedimiento para el mordentado y pasivado de aceros finos.
DE60009942D1 (de) Verfahren zur herstellung von eisenoxidpigmenten
JPS5549191A (en) Purifying treatment method of waste water
DK0398234T3 (da) Forbedret fremgangsmåde til fjernelse af cyanid fra spildevand
DE602005024921D1 (de) Verfahren zur entfernung von schwefelwasserstoff durch oxidation in gegenwart von heteropolysäuren
ATE180998T1 (de) Verfahren zur oxidativen reinigung von kontaminiertem schlamm oder aufgeschlämmter erde
CN109095591A (zh) 活化过硫酸盐、去除污染物的方法、应用
RU2174495C1 (ru) Способ очистки сточных вод от фенола
DE50003633D1 (de) Verfahren zur herstellung von l-ascorbinsäure
SE0201016L (sv) Sätt att behandla restsyra
ATE79095T1 (de) Verfahren zur herstellung einer eisen-iiisulfatl¯sung.
DK1392599T3 (da) Fremgangsmåde til fremstilling af en i det væsentlige chloritfri, stabil, vandig chloroxygenoplösning, den ifölge fremgangsmåden opnåelige chloroxygenoplösning samt anvendelsen heraf
TW200513442A (en) Method of treating wastewater containing fluoride ion
JPS62155987A (ja) 亜硝酸イオンが共存するジチオン酸含有廃水の処理方法

Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification

Ref document number: 1552038

Country of ref document: EP