WO2026046871A1 - Procédé de décapage de zinc à partir de substrats en acier revêtus - Google Patents

Procédé de décapage de zinc à partir de substrats en acier revêtus

Info

Publication number
WO2026046871A1
WO2026046871A1 PCT/EP2025/074013 EP2025074013W WO2026046871A1 WO 2026046871 A1 WO2026046871 A1 WO 2026046871A1 EP 2025074013 W EP2025074013 W EP 2025074013W WO 2026046871 A1 WO2026046871 A1 WO 2026046871A1
Authority
WO
WIPO (PCT)
Prior art keywords
ion
zinc
percarbonate
persulfate
oxidizing agent
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.)
Pending
Application number
PCT/EP2025/074013
Other languages
English (en)
Inventor
Adrianus Jacobus Wittebrood
Muawya HINDI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tata Steel Ijmuiden BV
Original Assignee
Tata Steel Ijmuiden BV
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 Tata Steel Ijmuiden BV filed Critical Tata Steel Ijmuiden BV
Publication of WO2026046871A1 publication Critical patent/WO2026046871A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/44—Compositions for etching metallic material from a metallic material substrate of different composition
    • 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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/10—Etching compositions
    • C23F1/14—Aqueous compositions
    • C23F1/32—Alkaline compositions
    • C23F1/34—Alkaline compositions for etching copper or alloys thereof
    • 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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/10—Etching compositions
    • C23F1/14—Aqueous compositions
    • C23F1/32—Alkaline compositions
    • C23F1/40—Alkaline compositions for etching other metallic material
    • 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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/46—Regeneration of etching compositions
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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)

Abstract

L'invention concerne un procédé de décapage sélectif de zinc à partir de substrats en acier revêtus de zinc selon la revendication 1. L'invention concerne en outre une solution aqueuse alcaline d'ammoniac appropriée pour être utilisée dans le procédé.
PCT/EP2025/074013 2024-08-27 2025-08-22 Procédé de décapage de zinc à partir de substrats en acier revêtus Pending WO2026046871A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP24196751 2024-08-27
EP24196751.2 2024-08-27

Publications (1)

Publication Number Publication Date
WO2026046871A1 true WO2026046871A1 (fr) 2026-03-05

Family

ID=92582997

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/EP2025/074012 Pending WO2026046870A1 (fr) 2024-08-27 2025-08-22 Procédé de décapage de cuivre à partir de substrats en acier revêtus
PCT/EP2025/074013 Pending WO2026046871A1 (fr) 2024-08-27 2025-08-22 Procédé de décapage de zinc à partir de substrats en acier revêtus

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/EP2025/074012 Pending WO2026046870A1 (fr) 2024-08-27 2025-08-22 Procédé de décapage de cuivre à partir de substrats en acier revêtus

Country Status (1)

Country Link
WO (2) WO2026046870A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3399090A (en) * 1965-04-28 1968-08-27 Fmc Corp Process of etching metal with ammonium persulfate with recovery and recycling
GB1141407A (en) * 1965-10-01 1969-01-29 Fmc Corp Electrolytic regeneration of ammonium persulphate
US3976500A (en) * 1973-08-27 1976-08-24 Enthone, Incorporated Method for dissolving non-ferrous metals
US4586961A (en) * 1985-02-15 1986-05-06 Halliburton Company Methods and compositions for removing copper and copper oxides from surfaces
EP0727499A1 (fr) 1995-02-17 1996-08-21 Hoogovens Staal B.V. Procédé pour enlever au moins un revêtement de grenaille

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3399090A (en) * 1965-04-28 1968-08-27 Fmc Corp Process of etching metal with ammonium persulfate with recovery and recycling
GB1141407A (en) * 1965-10-01 1969-01-29 Fmc Corp Electrolytic regeneration of ammonium persulphate
US3976500A (en) * 1973-08-27 1976-08-24 Enthone, Incorporated Method for dissolving non-ferrous metals
US4586961A (en) * 1985-02-15 1986-05-06 Halliburton Company Methods and compositions for removing copper and copper oxides from surfaces
EP0727499A1 (fr) 1995-02-17 1996-08-21 Hoogovens Staal B.V. Procédé pour enlever au moins un revêtement de grenaille

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ROSENSTEIN C ET AL: "Stripping metallic coatings", METAL FINISHING : DEVOTED EXCLUSIVELY TO METALLIC SURFACE TREATMENTS, ELSEVIER, NEW YORK, NY, US, vol. 97, no. 1, 1 January 1999 (1999-01-01), pages 456 - 465, XP027416369, ISSN: 0026-0576, [retrieved on 19990101] *

Also Published As

Publication number Publication date
WO2026046870A1 (fr) 2026-03-05

Similar Documents

Publication Publication Date Title
US3957505A (en) Gold reclamation process
US4668289A (en) Method for reclaiming gold
RU2072397C1 (ru) Раствор и способ травления нержавеющей стали
CN109055757A (zh) 一种回收电解锰或电解锌的阳极渣中二氧化锰和铅的方法
TW201315817A (zh) 自錳渣提取有價金屬之方法
US5302260A (en) Galvanic dezincing of galvanized steel
EP0308175B1 (fr) Elimination et récupération de dichromate dans la production électrolytique de chlorate
US5628893A (en) Halogen tin composition and electrolytic plating process
WO2026046871A1 (fr) Procédé de décapage de zinc à partir de substrats en acier revêtus
US20090145856A1 (en) Acid recycle process with iron removal
CN111876602A (zh) 一种从废镀锌板中提取高纯锌的全湿法工艺
US7138069B2 (en) Method of surface-finishing stainless steel after descaling
CN106348415A (zh) Qcl‑t破络剂及其制备方法
US2845330A (en) Method of recovering cyanides from waste aqueous solutions containing metal cyanides
AU706534B2 (en) Method of purifying gold
WO2021074904A1 (fr) Procédé de régénération d'eaux mères de décapage d'acide chlorhydrique
JPS6117913B2 (fr)
JP5115936B2 (ja) 不溶性金属電極の回収方法
US5524780A (en) Control of regeneration of ammoniacal copper etchant
WO2017017647A1 (fr) Procédé de récupération et de recyclage de matériaux constituant des membranes de séparation d'hydrogène
EP1438448A1 (fr) Procede electrolytique et compositions de decapage de depot autocatalytique de nickel
US3647686A (en) Method of treating industrial waste water without contamination of the environment
WO2026041305A1 (fr) Procédé de décapage de nickel ou de cobalt à partir de substrats en acier revêtus
US1978151A (en) Method of pickling metal
JP2001303141A (ja) 金属電極から貴金属を回収する処理方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 25759117

Country of ref document: EP

Kind code of ref document: A1