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FI120742B - Förfarande vid stålproduktion - Google Patents

Förfarande vid stålproduktion Download PDF

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Publication number
FI120742B
FI120742B FI20060460A FI20060460A FI120742B FI 120742 B FI120742 B FI 120742B FI 20060460 A FI20060460 A FI 20060460A FI 20060460 A FI20060460 A FI 20060460A FI 120742 B FI120742 B FI 120742B
Authority
FI
Finland
Prior art keywords
neutralized
pickling
hydroxide
process according
neutralization
Prior art date
Application number
FI20060460A
Other languages
English (en)
Finnish (fi)
Other versions
FI20060460A0 (sv
FI20060460A (sv
Inventor
Sven-Eric Lunner
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 FI20060460A0 publication Critical patent/FI20060460A0/sv
Priority to FI20060460A priority Critical patent/FI120742B/sv
Priority to CN2007800168513A priority patent/CN101443464B/zh
Priority to ES07730589.4T priority patent/ES2527424T3/es
Priority to BRPI0711442-7A priority patent/BRPI0711442B1/pt
Priority to US12/299,899 priority patent/US8278496B2/en
Priority to KR1020087027333A priority patent/KR101357315B1/ko
Priority to EA200802087A priority patent/EA014405B1/ru
Priority to SI200731563T priority patent/SI2016201T1/sl
Priority to EP20070730589 priority patent/EP2016201B1/en
Priority to JP2009508404A priority patent/JP5363975B2/ja
Priority to PCT/FI2007/000120 priority patent/WO2007128864A1/en
Priority to MX2008014249A priority patent/MX2008014249A/es
Priority to ZA200809569A priority patent/ZA200809569B/xx
Priority to TW96116208A priority patent/TWI413694B/zh
Publication of FI20060460A publication Critical patent/FI20060460A/sv
Application granted granted Critical
Publication of FI120742B publication Critical patent/FI120742B/sv

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/076—Use of slags or fluxes as treating agents
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/20—Halides
    • C01F11/22—Fluorides
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/62—Heavy metal compounds
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/006—Wet processes
    • 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
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/12—Halogens or halogen-containing compounds
    • C02F2101/14—Fluorine or fluorine-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/303—Complexing agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/02—Roasting processes
    • 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)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Geology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Treatment Of Sludge (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Claims (7)

1. Förfarande i samband med produktion av stäl, i synnerhet för behandling av hydroxidslam som bildas vid neutraliseringen av metallkontaminerade 5 betningsmedel som förbrukats i betningssteget för rostfritt stäl och för användning av kalciumfluorid i hydroxidslammet i stället för naturlig kalciumfluorid som slaggbildare i samband med produktion av stäl, kännetecknat därav, att tillsättningen av ett reaktivt neutraliseringsmedium öven/akas med kontinuerliga pH-elektroder, och pH-värdet regleras tili omrädet 10 9,0 - 9,5, och att pH-värdet regleras genom tillsättningen av neutraliseringsmediet, vilket som mest uppgär tili 5 % av den totala massan av de förbrukade betningslösningar som skall neutraliseras.
2. Förfarande enligt patentkrav 1, kännetecknat därav, att pH-värdet regleras 15 genom tillsättningen av neutraliseringsmediet, vilket som mest uppgär tili 2 % av den totala massan av de förbrukade betningslösningar som skall neutraliseras.
* · · \,.·* 3. Förfarande enligt patentkrav 1 eller 2, kännetecknat därav, att 20 neutraliseringsmediet i regleringen av pH-värdet är kalciumhydroxid, Ca(OH)2. ··♦ ···· ···
4. Förfarande enligt patentkrav 1 eller 2, kännetecknat därav, att • · · neutraliseringsmediet i regleringen av pH-värdet är kalciumkarbonat, CaCOa. 9 9 9 9 ··· ... 25
5. Förfarande enligt nägot av patentkraven 1-4, kännetecknat därav, att det * · · neutraliserade hydroxidslammets fukthalt ligger inom omrädet 45 - 50 %. t S 999 9 999 *"j
6. Förfarande enligt nägot av patentkraven 1 - 5, kännetecknat därav, att det 9 9 *·;·* neutraliserade hydroxidslammet kalcineras och sintras i en roterugn inom ··· 30 temperaturomrädet 950 - 1050 °C. • 9 9 9 9 • 99 • ·
7. Förfarande enligt patentkrav 6, kännetecknat därav, att roterugnsprodukten briketteras, varvid som bindemedel används ett väsentligen kolfritt kalciumfluoridpulver, CaF2. 5 ·«· • · ··· • · · • * * ··# ··· ··· • · t * *·* • · · * t · ·*· * + • » • · «·· • · · • · · • · « · · • · • · ·· » ···· • · · • » * · ··· ··· • · • · «*· · · * • M • ·
FI20060460A 2006-05-10 2006-05-10 Förfarande vid stålproduktion FI120742B (sv)

Priority Applications (14)

Application Number Priority Date Filing Date Title
FI20060460A FI120742B (sv) 2006-05-10 2006-05-10 Förfarande vid stålproduktion
EA200802087A EA014405B1 (ru) 2006-05-10 2007-05-07 Способ производства флюсующего агента, используемого в производстве стали
EP20070730589 EP2016201B1 (en) 2006-05-10 2007-05-07 Method in connection with steel production
BRPI0711442-7A BRPI0711442B1 (pt) 2006-05-10 2007-05-07 Método relativo à produção de aço
US12/299,899 US8278496B2 (en) 2006-05-10 2007-05-07 Method in connection with steel production
KR1020087027333A KR101357315B1 (ko) 2006-05-10 2007-05-07 강 제조 관련 방법
CN2007800168513A CN101443464B (zh) 2006-05-10 2007-05-07 与钢生产有关的方法
SI200731563T SI2016201T1 (sl) 2006-05-10 2007-05-07 Postopek v zvezi s proizvodnjo jekla
ES07730589.4T ES2527424T3 (es) 2006-05-10 2007-05-07 Método en relación con la producción de acero
JP2009508404A JP5363975B2 (ja) 2006-05-10 2007-05-07 鉄鋼生産に関する方法
PCT/FI2007/000120 WO2007128864A1 (en) 2006-05-10 2007-05-07 Method in connection with steel production
MX2008014249A MX2008014249A (es) 2006-05-10 2007-05-07 Metodo en relacion con la produccion de acero.
ZA200809569A ZA200809569B (en) 2006-05-10 2007-05-07 Method in connection with steel production
TW96116208A TWI413694B (zh) 2006-05-10 2007-05-08 鋼生產方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20060460 2006-05-10
FI20060460A FI120742B (sv) 2006-05-10 2006-05-10 Förfarande vid stålproduktion

Publications (3)

Publication Number Publication Date
FI20060460A0 FI20060460A0 (sv) 2006-05-10
FI20060460A FI20060460A (sv) 2007-11-11
FI120742B true FI120742B (sv) 2010-02-15

Family

ID=36539905

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20060460A FI120742B (sv) 2006-05-10 2006-05-10 Förfarande vid stålproduktion

Country Status (14)

Country Link
US (1) US8278496B2 (sv)
EP (1) EP2016201B1 (sv)
JP (1) JP5363975B2 (sv)
KR (1) KR101357315B1 (sv)
CN (1) CN101443464B (sv)
BR (1) BRPI0711442B1 (sv)
EA (1) EA014405B1 (sv)
ES (1) ES2527424T3 (sv)
FI (1) FI120742B (sv)
MX (1) MX2008014249A (sv)
SI (1) SI2016201T1 (sv)
TW (1) TWI413694B (sv)
WO (1) WO2007128864A1 (sv)
ZA (1) ZA200809569B (sv)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ305399B6 (cs) * 2014-06-30 2015-09-02 Výzkumný ústav anorganické chemie, a. s. Způsob neutralizace odpadních oplachových vod z moříren nerezových ocelí
CN106929625A (zh) * 2015-12-29 2017-07-07 林士凯 将钢厂产生的污泥回收再制为钢厂生产辅助原料的方法
KR20190063710A (ko) * 2017-11-30 2019-06-10 주식회사 포스코 첨가제 제조 방법 및 이를 이용한 용선의 정련 방법

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4118243A (en) * 1977-09-02 1978-10-03 Waste Management Of Illinois, Inc. Process for disposal of arsenic salts
JPS5779107A (en) 1980-11-04 1982-05-18 Sumitomo Metal Ind Ltd Method for utilizing sludge for neutralization of waste fluoronitric acid
DE3230603A1 (de) * 1982-08-18 1984-02-23 Metallgesellschaft Ag, 6000 Frankfurt Verfahren zur behandlung abgearbeiteter beizpasten
JPS60206487A (ja) * 1984-03-28 1985-10-18 Nippon Stainless Steel Co Ltd ステンレス鋼酸洗廃液の処理方法
JP3549560B2 (ja) * 1993-12-28 2004-08-04 日新製鋼株式会社 酸洗工程の廃液から有価金属とフッ化カルシウムを回収する方法
SE510298C2 (sv) * 1995-11-28 1999-05-10 Eka Chemicals Ab Sätt vid betning av stål
CN1164579A (zh) * 1996-05-05 1997-11-12 大连市金州区环境监测站 钢材硫酸酸洗废液治理的工艺方法
JP2000325969A (ja) 1999-05-21 2000-11-28 Daido Steel Co Ltd 酸性廃液の中和処理方法及び装置
FI111177B (sv) * 2001-12-12 2003-06-13 Linde Ag Anordning och förfarande för styrning av alkalinitet och pH i en industriprocess
SE527672C2 (sv) * 2004-04-07 2006-05-09 Outokumpu Stainless Ab Sätt att framställa ett flussmedel, flussmede, samt metod vid tillverkning av stål

Also Published As

Publication number Publication date
EA200802087A1 (ru) 2009-06-30
KR101357315B1 (ko) 2014-02-03
EA014405B1 (ru) 2010-12-30
EP2016201B1 (en) 2014-10-08
SI2016201T1 (sl) 2015-01-30
TWI413694B (zh) 2013-11-01
TW200804605A (en) 2008-01-16
US8278496B2 (en) 2012-10-02
WO2007128864A1 (en) 2007-11-15
JP2009536264A (ja) 2009-10-08
ZA200809569B (en) 2010-03-31
CN101443464B (zh) 2012-02-22
ES2527424T3 (es) 2015-01-23
MX2008014249A (es) 2008-11-18
BRPI0711442B1 (pt) 2015-08-04
KR20090031504A (ko) 2009-03-26
FI20060460A0 (sv) 2006-05-10
EP2016201A4 (en) 2011-12-28
CN101443464A (zh) 2009-05-27
JP5363975B2 (ja) 2013-12-11
BRPI0711442A2 (pt) 2011-11-01
EP2016201A1 (en) 2009-01-21
FI20060460A (sv) 2007-11-11
US20090118565A1 (en) 2009-05-07

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