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FR2668141B1 - PROCESS FOR THE PURIFICATION OF WASTEWATER PRODUCED DURING THE PREPARATION OF TIO2, AND METHOD FOR THE PREPARATION OF TIO2 USING SUCH A PURIFICATION PROCESS. - Google Patents

PROCESS FOR THE PURIFICATION OF WASTEWATER PRODUCED DURING THE PREPARATION OF TIO2, AND METHOD FOR THE PREPARATION OF TIO2 USING SUCH A PURIFICATION PROCESS.

Info

Publication number
FR2668141B1
FR2668141B1 FR9112115A FR9112115A FR2668141B1 FR 2668141 B1 FR2668141 B1 FR 2668141B1 FR 9112115 A FR9112115 A FR 9112115A FR 9112115 A FR9112115 A FR 9112115A FR 2668141 B1 FR2668141 B1 FR 2668141B1
Authority
FR
France
Prior art keywords
tio2
preparation
purification
produced during
wastewater produced
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.)
Expired - Fee Related
Application number
FR9112115A
Other languages
French (fr)
Other versions
FR2668141A1 (en
Inventor
Pekka Lammi
Olli Konstari
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.)
Kemira Oyj
Original Assignee
Kemira Oyj
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 Kemira Oyj filed Critical Kemira Oyj
Publication of FR2668141A1 publication Critical patent/FR2668141A1/en
Application granted granted Critical
Publication of FR2668141B1 publication Critical patent/FR2668141B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G23/00—Compounds of titanium
    • C01G23/04—Oxides; Hydroxides
    • C01G23/047—Titanium dioxide
    • C01G23/053—Producing by wet processes, e.g. hydrolysing titanium salts
    • C01G23/0532—Producing by wet processes, e.g. hydrolysing titanium salts by hydrolysing sulfate-containing salts
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Catalysts (AREA)
FR9112115A 1990-10-23 1991-10-02 PROCESS FOR THE PURIFICATION OF WASTEWATER PRODUCED DURING THE PREPARATION OF TIO2, AND METHOD FOR THE PREPARATION OF TIO2 USING SUCH A PURIFICATION PROCESS. Expired - Fee Related FR2668141B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI905221A FI89901C (en) 1990-10-23 1990-10-23 purification method

Publications (2)

Publication Number Publication Date
FR2668141A1 FR2668141A1 (en) 1992-04-24
FR2668141B1 true FR2668141B1 (en) 1994-04-08

Family

ID=8531290

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9112115A Expired - Fee Related FR2668141B1 (en) 1990-10-23 1991-10-02 PROCESS FOR THE PURIFICATION OF WASTEWATER PRODUCED DURING THE PREPARATION OF TIO2, AND METHOD FOR THE PREPARATION OF TIO2 USING SUCH A PURIFICATION PROCESS.

Country Status (5)

Country Link
DE (1) DE4132843A1 (en)
ES (1) ES2039151B1 (en)
FI (1) FI89901C (en)
FR (1) FR2668141B1 (en)
GB (1) GB2249086B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104692456A (en) * 2015-01-09 2015-06-10 上海安赐机械设备有限公司 Green and environment-friendly sulfuric acid method titanium dioxide production device and process

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2352701A1 (en) * 1973-10-20 1975-06-12 Hoechst Ag PROCESS FOR CONCENTRATING SALTY, DILUTED SULFUR ACID
DE2630196A1 (en) * 1976-07-05 1978-01-19 Bayer Ag METHOD FOR PRODUCING SULFURIC ACID FROM WASTE ACID AND IRON SULFATE
DE3327769A1 (en) * 1983-08-02 1985-02-14 Bayer Ag, 5090 Leverkusen METHOD FOR THE TREATMENT OF THICK ACID
DE3513120A1 (en) * 1985-04-12 1986-10-23 Bayer Ag, 5090 Leverkusen METHOD FOR PRODUCING TITANIUM DIOXIDE
DE3912554C1 (en) * 1989-04-17 1990-07-12 Bayer Ag, 5090 Leverkusen, De

Also Published As

Publication number Publication date
FR2668141A1 (en) 1992-04-24
GB2249086B (en) 1994-10-12
FI905221L (en) 1992-04-24
FI905221A0 (en) 1990-10-23
GB9122347D0 (en) 1991-12-04
DE4132843A1 (en) 1992-04-30
FI89901B (en) 1993-08-31
GB2249086A (en) 1992-04-29
ES2039151A1 (en) 1993-08-16
FI89901C (en) 1993-12-10
ES2039151B1 (en) 1994-03-16

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Legal Events

Date Code Title Description
ST Notification of lapse