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
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)
- Catalysts (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
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)
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)
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 |
-
1990
- 1990-10-23 FI FI905221A patent/FI89901C/en not_active IP Right Cessation
-
1991
- 1991-10-02 DE DE19914132843 patent/DE4132843A1/en not_active Withdrawn
- 1991-10-02 FR FR9112115A patent/FR2668141B1/en not_active Expired - Fee Related
- 1991-10-14 ES ES9102261A patent/ES2039151B1/en not_active Expired - Lifetime
- 1991-10-22 GB GB9122347A patent/GB2249086B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FI905221A (en) | 1992-04-24 |
DE4132843A1 (en) | 1992-04-30 |
GB2249086A (en) | 1992-04-29 |
ES2039151B1 (en) | 1994-03-16 |
GB2249086B (en) | 1994-10-12 |
FR2668141A1 (en) | 1992-04-24 |
FI89901C (en) | 1993-12-10 |
ES2039151A1 (en) | 1993-08-16 |
FI905221A0 (en) | 1990-10-23 |
FI89901B (en) | 1993-08-31 |
GB9122347D0 (en) | 1991-12-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |