FI67409C - Foerfarande foer regenerering av betningssyror - Google Patents

Foerfarande foer regenerering av betningssyror Download PDF

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Publication number
FI67409C
FI67409C FI830239A FI830239A FI67409C FI 67409 C FI67409 C FI 67409C FI 830239 A FI830239 A FI 830239A FI 830239 A FI830239 A FI 830239A FI 67409 C FI67409 C FI 67409C
Authority
FI
Finland
Prior art keywords
solution
sulfuric acid
chromium
acid
crystallization
Prior art date
Application number
FI830239A
Other languages
English (en)
Finnish (fi)
Other versions
FI830239A0 (fi
FI830239L (fi
FI67409B (fi
Inventor
Timo Tapio Koivunen
Seppo Ilmari Blomqvist
Sigmund Peder Fugleberg
Kaj-Henrik Lindroos
Bror Goeran Nyman
Hannu Jorma Pouru
Markku Tapio Saarela
Original Assignee
Outokumpu Oy
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 Outokumpu Oy filed Critical Outokumpu Oy
Publication of FI830239A0 publication Critical patent/FI830239A0/fi
Priority to FI830239A priority Critical patent/FI67409C/fi
Priority to ZA84160A priority patent/ZA84160B/xx
Priority to SE8400120A priority patent/SE459665B/sv
Priority to FR8400868A priority patent/FR2539763B1/fr
Priority to CA000445890A priority patent/CA1214382A/en
Priority to US06/572,945 priority patent/US4526650A/en
Priority to AT0022684A priority patent/AT380903B/de
Priority to DE19843402320 priority patent/DE3402320A1/de
Priority to BR8400371A priority patent/BR8400371A/pt
Priority to JP59009613A priority patent/JPS59137302A/ja
Priority to GB08401940A priority patent/GB2134095B/en
Priority to KR1019840000317A priority patent/KR910006789B1/ko
Publication of FI830239L publication Critical patent/FI830239L/fi
Application granted granted Critical
Publication of FI67409B publication Critical patent/FI67409B/fi
Publication of FI67409C publication Critical patent/FI67409C/fi

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00—Compounds of chromium
    • C01G37/02—Oxides or hydrates 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
    • 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
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Compounds Of Iron (AREA)

Claims (10)

1. Förfarande för regenerering av betsyror som innehäller salpeter- ooh fluorvätesyra genom att inblanda betsyran i ca 60-procentig svavelsyra och avdunsta syrorna som är svagare än svavelsyran och genom att tillvarataga dessa i en kondensator samt genom att utkristallisera kontinuerligt de i svavelsyran lösta metallsalterna i tvä steg och konvertera dessa tili en svärlöslig järnkromfällning, medan nickeln kvarstär i lösningen, kännetecknat av att för befrämjande av utkristalliseringen deias metallsaltet i tvä delar: en huvudlinje och en sidolinje, varvid ätminstone en del av metallsaltet kristalliseras i sidolinjen och kristallerna förenas med huvudlinjens kristalliseringssteg och av den utvunna, sura, lösliga sulfatfällningen utfälls järnet som jarosit och kromen som hydroxid.
2. Förfarande enligt patentkravet 1, kännetecknat av att moderlösningen som intas i sidolinjen uppvärms tili en temperatur av 120° - 250° C, företrädesvis 1500 _ 2200 c.
3. Förfarande enligt patentkravet 1 eller 2, kännetecknat av att svavelsyrans koncentration i sidolinjen är 70 - 85 %.
4. Förfarande enligt nägot av de föregäende patentkraven 1-3 kännetecknat av att den i sidolinjen bildade syrauppslamningen ätercirkuleras tili huvudlinjens kristalliseringssteg.
5. Förfarande enligt nägot av de föregäende patentkraven 1-4, kännetecknat av att den i sidolinjen skeende avdunstning-kristalliseringen utförs i en doppavdunstningsapparat.
6. Förfarande enligt nägot av de föregäende patentkraven 1 - 5, kännetecknat av att i hyvudlinjens kristalliseringssteg hälls moderlösningens kromhalt vid ett värde mindre än 15 g/1.
7. Förfarande enligt nägot av de föregäende patentkraven 1 - 6, kännetecknat av att i huvudlinjens kristalliseringssteg utfälls 70 - 90 % av det i moderlösningen ingäende järnet och 20 - 60 % av kromen i denna lösning.
8. Förfarande enligt nägot av de föregäende patentkraven 1 - 7,
FI830239A 1983-01-25 1983-01-25 Foerfarande foer regenerering av betningssyror FI67409C (fi)

Priority Applications (12)

Application Number Priority Date Filing Date Title
FI830239A FI67409C (fi) 1983-01-25 1983-01-25 Foerfarande foer regenerering av betningssyror
ZA84160A ZA84160B (en) 1983-01-25 1984-01-09 Method for regenerating pickling acids
SE8400120A SE459665B (sv) 1983-01-25 1984-01-11 Saett att regenerera betningssyror
FR8400868A FR2539763B1 (fr) 1983-01-25 1984-01-20 Procede de regeneration d'acides de decapage
CA000445890A CA1214382A (en) 1983-01-25 1984-01-23 Method for regenerating pickling acids
US06/572,945 US4526650A (en) 1983-01-25 1984-01-23 Method for regenerating pickling acids
AT0022684A AT380903B (de) 1983-01-25 1984-01-24 Verfahren zum regenerieren von salpetersaeure und flussaeure enthaltenden beizsaeuren
DE19843402320 DE3402320A1 (de) 1983-01-25 1984-01-24 Verfahren zur regenerierung von beizsaeure
BR8400371A BR8400371A (pt) 1983-01-25 1984-01-24 Metodo para regenerar acidos de decapagem
JP59009613A JPS59137302A (ja) 1983-01-25 1984-01-24 酸洗酸の再生方法
GB08401940A GB2134095B (en) 1983-01-25 1984-01-25 Method for regenerating pickling acids
KR1019840000317A KR910006789B1 (ko) 1983-01-25 1984-01-25 산세액의 재생방법

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI830239 1983-01-25
FI830239A FI67409C (fi) 1983-01-25 1983-01-25 Foerfarande foer regenerering av betningssyror

Publications (4)

Publication Number Publication Date
FI830239A0 FI830239A0 (fi) 1983-01-25
FI830239L FI830239L (fi) 1984-07-26
FI67409B FI67409B (fi) 1984-11-30
FI67409C true FI67409C (fi) 1985-03-11

Family

ID=8516647

Family Applications (1)

Application Number Title Priority Date Filing Date
FI830239A FI67409C (fi) 1983-01-25 1983-01-25 Foerfarande foer regenerering av betningssyror

Country Status (12)

Country Link
US (1) US4526650A (sv)
JP (1) JPS59137302A (sv)
KR (1) KR910006789B1 (sv)
AT (1) AT380903B (sv)
BR (1) BR8400371A (sv)
CA (1) CA1214382A (sv)
DE (1) DE3402320A1 (sv)
FI (1) FI67409C (sv)
FR (1) FR2539763B1 (sv)
GB (1) GB2134095B (sv)
SE (1) SE459665B (sv)
ZA (1) ZA84160B (sv)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS646835U (sv) * 1987-07-01 1989-01-13
DE3728693A1 (de) * 1987-08-27 1989-03-09 Wacker Chemitronic Verfahren und vorrichtung zum aetzen von halbleiteroberflaechen
US5076884A (en) * 1990-07-19 1991-12-31 Westinghouse Electric Corp. Process of precipitating zirconium or hafnium from spent pickling solutions
US5082523A (en) * 1990-11-19 1992-01-21 Westinghouse Electric Corp. Process of regenerating spent HF-HNO3 pickle acid containing (ZrF6-2
US5500098A (en) * 1993-08-05 1996-03-19 Eco-Tec Limited Process for regeneration of volatile acids
US5632866A (en) * 1994-01-12 1997-05-27 Fsi International, Inc. Point-of-use recycling of wafer cleaning substances
US6294145B1 (en) * 1994-11-08 2001-09-25 Texas Instruments Incorporated Piranha etch preparation having long shelf life and method of making same
AT412001B (de) * 1995-03-07 2004-08-26 Edv Systemanalyse Und Systemde Verfahren zur gewinnung bzw. rückgewinnung von säuren
EP0795628B1 (en) * 1996-03-14 2001-05-23 CONDOROIL IMPIANTI s.r.l. Pickling of stainless steels while continuously reoxidizing catalytically the pickling solution
AT407757B (de) * 1999-03-22 2001-06-25 Andritz Patentverwaltung Verfahren zur rückgewinnung von säuren aus metallhaltigen lösungen dieser säuren
JP4635527B2 (ja) * 2004-09-08 2011-02-23 三菱化学エンジニアリング株式会社 フッ酸の回収方法
JP4581618B2 (ja) * 2004-10-14 2010-11-17 三菱化学エンジニアリング株式会社 フッ酸の回収方法
AT522594B1 (de) * 2019-09-03 2020-12-15 Umwandlung von Metallsaizösungen in flüssige Säuren und feste Metalloxide
CN112875961A (zh) * 2021-01-25 2021-06-01 山东中能环保科技股份有限公司 含金属铁铬镍酸洗废水的处理及再生利用系统
CN112875964A (zh) * 2021-01-25 2021-06-01 山东中能环保科技股份有限公司 含金属铁铬镍酸洗废水的处理及再生利用方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB889279A (en) * 1958-02-04 1962-02-14 Willy Glaser Improvements in and relating to heat transfer operations and equipment for these purposes
US2993757A (en) * 1958-07-07 1961-07-25 Crucible Steel Co America Process for recovering acid values from mixed acid waste
GB1119236A (en) * 1965-06-24 1968-07-10 Chemical Construction Corp A method for the recovery of iron salts and sulphonic acid from spent pickle liquors
SE351444B (sv) * 1970-11-03 1972-11-27 Nordstjernan Rederi Ab
US3840646A (en) * 1972-05-17 1974-10-08 Fuji Kasui Eng Co Ltd Process for recovering nitric acid from waste pickle liquor solution
AT337721B (de) * 1974-04-22 1977-07-11 Industrial Resources Verfahren zur herstellung umweltfreundlicher wasserunloslicher sulfat/sulfit-verbindungen des natriums oder ammoniums
FI58519C (fi) * 1978-12-07 1981-02-10 Rosenlew Ab Oy W Foerfarande foer regenerering av betningssyror
SU876791A1 (ru) * 1979-11-11 1981-10-30 Уральский Научно-Исследовательский Институт Трубной Промышленности (Уралнити) Способ регенерации азотно-плавикового травильного раствора

Also Published As

Publication number Publication date
FI830239A0 (fi) 1983-01-25
ZA84160B (en) 1984-09-26
SE459665B (sv) 1989-07-24
GB2134095A (en) 1984-08-08
KR840007449A (ko) 1984-12-07
US4526650A (en) 1985-07-02
GB2134095B (en) 1986-08-28
CA1214382A (en) 1986-11-25
AT380903B (de) 1986-07-25
FR2539763A1 (fr) 1984-07-27
ATA22684A (de) 1985-12-15
BR8400371A (pt) 1984-08-28
KR910006789B1 (ko) 1991-09-02
SE8400120L (sv) 1984-07-26
SE8400120D0 (sv) 1984-01-11
JPS634637B2 (sv) 1988-01-29
GB8401940D0 (en) 1984-02-29
FI830239L (fi) 1984-07-26
FR2539763B1 (fr) 1987-02-27
JPS59137302A (ja) 1984-08-07
FI67409B (fi) 1984-11-30
DE3402320C2 (sv) 1989-12-21
DE3402320A1 (de) 1984-07-26

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MA Patent expired

Owner name: OUTOKUMPU OY