ES2125795A1 - Procedimiento para la regeneracion de electrolitos - Google Patents

Procedimiento para la regeneracion de electrolitos

Info

Publication number
ES2125795A1
ES2125795A1 ES09600224A ES9600224A ES2125795A1 ES 2125795 A1 ES2125795 A1 ES 2125795A1 ES 09600224 A ES09600224 A ES 09600224A ES 9600224 A ES9600224 A ES 9600224A ES 2125795 A1 ES2125795 A1 ES 2125795A1
Authority
ES
Spain
Prior art keywords
pickle liquor
electrolytes
stainless steel
regeneration
na2s04
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.)
Granted
Application number
ES09600224A
Other languages
English (en)
Other versions
ES2125795B1 (es
Inventor
Jovan Starcevic
Edgar Braun
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.)
Andritz Patentverwaltungs GmbH
Original Assignee
Andritz Patentverwaltungs GmbH
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 Andritz Patentverwaltungs GmbH filed Critical Andritz Patentverwaltungs GmbH
Publication of ES2125795A1 publication Critical patent/ES2125795A1/es
Application granted granted Critical
Publication of ES2125795B1 publication Critical patent/ES2125795B1/es
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F7/00—Constructional parts, or assemblies thereof, of cells for electrolytic removal of material from objects; Servicing or operating
    • C25F7/02—Regeneration of process liquids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

Procedimiento para la regeneración de electrólitos. Se aplica en particular a la regeneración de Na{sub,2 SO{sub,4 , procedente de decapantes residuales para acero inoxidable, en particular bandas de acero inoxidable. Está caracterizado principalmente por el hecho de que se añade Na{sub,x H{sub,y S{sub,z O{sub,v , en una disolución ácida y se reduce así Cr{sup,6+ a Cr{sup,3+ , siendo los sufijos: x = 0 a 2, y = 0 a 2, z = 1 a 6, v = 2 a 6. Aplicable para reducir los costes de explotación y el impacto ambiental del decapado.
ES009600224A 1995-02-15 1996-02-01 Procedimiento para la regeneracion de electrolitos. Expired - Fee Related ES2125795B1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0026895A AT401183B (de) 1995-02-15 1995-02-15 Verfahren zur regeneration von elektrolyten, insbesondere na2so4 aus abbeizen von edelstahl, insbesondere edelstahlbändern

Publications (2)

Publication Number Publication Date
ES2125795A1 true ES2125795A1 (es) 1999-03-01
ES2125795B1 ES2125795B1 (es) 1999-11-16

Family

ID=3486028

Family Applications (1)

Application Number Title Priority Date Filing Date
ES009600224A Expired - Fee Related ES2125795B1 (es) 1995-02-15 1996-02-01 Procedimiento para la regeneracion de electrolitos.

Country Status (10)

Country Link
US (1) US6506294B1 (es)
KR (1) KR100209987B1 (es)
CN (1) CN1061104C (es)
AT (1) AT401183B (es)
BR (1) BR9600726A (es)
DE (1) DE19602304A1 (es)
ES (1) ES2125795B1 (es)
FI (1) FI960645A (es)
FR (1) FR2732041B1 (es)
TW (1) TW349076B (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT406486B (de) * 1998-12-22 2000-05-25 Andritz Patentverwaltung Verfahren zum beizen von edelstahl
IT1317896B1 (it) * 2000-08-10 2003-07-15 Ct Sviluppo Materiali Spa Metodo di decapaggio elettrolitico continuo di prodotti metallici concelle alimentate a corrente alternata.
CN103484888B (zh) * 2012-06-14 2015-11-04 兰州大学 一种不锈钢生产中含铬硫酸钠废液及硫酸酸洗废液的处理方法
AT517710B1 (de) * 2016-04-13 2017-04-15 Andritz Ag Maschf Verfahren zum elektrolytischen beizen von metallbändern
CN113215646A (zh) * 2021-05-11 2021-08-06 山西太钢工程技术有限公司 一种电解硫酸钠溶液循环利用智能控制系统
CN113637976B (zh) * 2021-08-20 2023-01-13 深圳天华机器设备有限公司 一种硫酸洗槽药水再生系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5230260A (en) * 1975-09-03 1977-03-07 Hitachi Seiko Ltd Treatment process and treatment apparatus for electrolyte
EP0291493A1 (de) * 1987-05-07 1988-11-17 Maschinenfabrik Andritz Actiengesellschaft Verfahren zum elektrolytischen Beizen von chromhältigem Edelstahl

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0824910B2 (ja) * 1988-01-18 1996-03-13 川崎製鉄株式会社 金属含有廃液の処理装置
CN1043535A (zh) * 1988-12-24 1990-07-04 由正明 硫酸酸洗废液再生的工艺方法
CN1030534C (zh) * 1992-10-14 1995-12-20 烟台大学 硫酸酸洗废液循环处理方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5230260A (en) * 1975-09-03 1977-03-07 Hitachi Seiko Ltd Treatment process and treatment apparatus for electrolyte
EP0291493A1 (de) * 1987-05-07 1988-11-17 Maschinenfabrik Andritz Actiengesellschaft Verfahren zum elektrolytischen Beizen von chromhältigem Edelstahl

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BASE DE DATOS CHEMICAL ABSTRACT en STN. AN 87:13475. OKUDAIRA, H y col. "Removal of hexavalent chromium from electrolyte solution for electromachining" & JP 52030260 A (HITACHI SEIKO KK) 07.03.1977 *

Also Published As

Publication number Publication date
KR100209987B1 (ko) 1999-07-15
FR2732041A1 (fr) 1996-09-27
CN1061104C (zh) 2001-01-24
BR9600726A (pt) 1997-12-23
FI960645A (fi) 1996-08-16
FR2732041B1 (fr) 1998-06-05
FI960645A0 (fi) 1996-02-13
DE19602304A1 (de) 1996-08-22
US6506294B1 (en) 2003-01-14
AT401183B (de) 1996-07-25
TW349076B (en) 1999-01-01
KR960031654A (ko) 1996-09-17
ES2125795B1 (es) 1999-11-16
CN1149086A (zh) 1997-05-07
ATA26895A (de) 1995-11-15

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