FI901702A0 - Process for the recovery of waste sulfuric acid - Google Patents

Process for the recovery of waste sulfuric acid

Info

Publication number
FI901702A0
FI901702A0 FI901702A FI901702A FI901702A0 FI 901702 A0 FI901702 A0 FI 901702A0 FI 901702 A FI901702 A FI 901702A FI 901702 A FI901702 A FI 901702A FI 901702 A0 FI901702 A0 FI 901702A0
Authority
FI
Finland
Prior art keywords
recovery
sulfuric acid
waste sulfuric
waste
acid
Prior art date
Application number
FI901702A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI94745B (en
FI94745C (en
Inventor
Josef Mauer
Parmanand Bansal
Original Assignee
Escher Wyss Ag
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 Escher Wyss Ag filed Critical Escher Wyss Ag
Publication of FI901702A0 publication Critical patent/FI901702A0/en
Publication of FI94745B publication Critical patent/FI94745B/en
Application granted granted Critical
Publication of FI94745C publication Critical patent/FI94745C/en

Links

Classifications

    • 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
    • C22B34/00—Obtaining refractory metals
    • C22B34/10—Obtaining titanium, zirconium or hafnium
    • C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
    • C22B34/1236—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by wet processes, e.g. by leaching
    • C22B34/124—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by wet processes, e.g. by leaching using acidic solutions or liquors
    • C22B34/125—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by wet processes, e.g. by leaching using acidic solutions or liquors containing a sulfur ion as active agent
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/69—Sulfur trioxide; Sulfuric acid
    • C01B17/90—Separation; Purification
    • C01B17/901—Recovery from spent acids containing metallic ions, e.g. hydrolysis acids, pickling acids
    • 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
    • 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
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
FI901702A 1989-04-07 1990-04-04 Method for reusing waste sulfuric acid FI94745C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1315/89A CH677933A5 (en) 1989-04-07 1989-04-07
CH131589 1989-04-07

Publications (3)

Publication Number Publication Date
FI901702A0 true FI901702A0 (en) 1990-04-04
FI94745B FI94745B (en) 1995-07-14
FI94745C FI94745C (en) 1995-10-25

Family

ID=4207571

Family Applications (1)

Application Number Title Priority Date Filing Date
FI901702A FI94745C (en) 1989-04-07 1990-04-04 Method for reusing waste sulfuric acid

Country Status (7)

Country Link
EP (1) EP0392211B1 (en)
JP (1) JP2569197B2 (en)
CA (1) CA2014001A1 (en)
CH (1) CH677933A5 (en)
DE (2) DE3918771A1 (en)
ES (1) ES2048350T3 (en)
FI (1) FI94745C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110040698B (en) * 2019-05-17 2022-07-29 成都先进金属材料产业技术研究院股份有限公司 Method for treating titanium dioxide waste acid by using magnesium sulfate
KR102057976B1 (en) * 2019-06-11 2019-12-20 한국지질자원연구원 Refining method for sulfuric acid sludge
CN113443649B (en) * 2021-07-13 2022-11-29 攀钢集团研究院有限公司 Intermittent acidolysis method of titanium slag
CN114438335B (en) * 2021-12-29 2024-02-09 绵阳师范学院 Treatment method of titanium-containing blast furnace slag

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL134070C (en) * 1966-03-28 1900-01-01
DE2210637B2 (en) * 1972-03-06 1975-12-04 Davy Powergas Gmbh, 5000 Koeln Process for the production of a gas containing sulfur dioxide from a dilute acid obtained during the production of titanium
DE2339859A1 (en) * 1973-08-07 1975-02-27 Metallgesellschaft Ag PROCESS FOR PROCESSING WASTE Aqueous SULFUR ACID
DE2630196A1 (en) * 1976-07-05 1978-01-19 Bayer Ag METHOD FOR PRODUCING SULFURIC ACID FROM WASTE ACID AND IRON SULFATE
DE2729755C2 (en) * 1977-07-01 1983-12-22 Kronos Titan-Gesellschaft Mbh, 5090 Leverkusen Process for the production of titanium dioxide by the discontinuous digestion of ilmenite ores with sulfuric acid
DE3327769A1 (en) * 1983-08-02 1985-02-14 Bayer Ag, 5090 Leverkusen METHOD FOR THE TREATMENT OF THICK ACID

Also Published As

Publication number Publication date
CA2014001A1 (en) 1990-10-07
FI94745B (en) 1995-07-14
EP0392211B1 (en) 1993-12-29
JPH02289406A (en) 1990-11-29
CH677933A5 (en) 1991-07-15
FI94745C (en) 1995-10-25
ES2048350T3 (en) 1994-03-16
DE59003996D1 (en) 1994-02-10
EP0392211A1 (en) 1990-10-17
DE3918771A1 (en) 1990-10-11
JP2569197B2 (en) 1997-01-08

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Legal Events

Date Code Title Description
BB Publication of examined application
MM Patent lapsed

Owner name: SULZER-ESCHER WYSS AG