AU6893894A - A process for working up thin acid - Google Patents

A process for working up thin acid

Info

Publication number
AU6893894A
AU6893894A AU68938/94A AU6893894A AU6893894A AU 6893894 A AU6893894 A AU 6893894A AU 68938/94 A AU68938/94 A AU 68938/94A AU 6893894 A AU6893894 A AU 6893894A AU 6893894 A AU6893894 A AU 6893894A
Authority
AU
Australia
Prior art keywords
working
thin acid
thin
acid
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.)
Granted
Application number
AU68938/94A
Other versions
AU668313B2 (en
Inventor
Rene De Clean
Frank Quaeyhaegens
Domien Sluyts
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.)
Kerr-Mcgee Pigments & Co KG GmbH
Original Assignee
Bayer Antwerpen NV
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 Bayer Antwerpen NV filed Critical Bayer Antwerpen NV
Publication of AU6893894A publication Critical patent/AU6893894A/en
Application granted granted Critical
Publication of AU668313B2 publication Critical patent/AU668313B2/en
Assigned to KERR-MCGEE PIGMENTS GMBH & CO. KG reassignment KERR-MCGEE PIGMENTS GMBH & CO. KG Alteration of Name(s) in Register under S187 Assignors: BAYER ANTWERPEN N.V.
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • C22B34/1254—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 basic solutions or liquors
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/24—Sulfates of ammonium
    • C01C1/242—Preparation from ammonia and sulfuric acid or sulfur trioxide

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Compounds Of Iron (AREA)
  • Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Removal Of Specific Substances (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Fertilizers (AREA)
AU68938/94A 1993-08-12 1994-08-05 A process for working up thin acid Ceased AU668313B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4327025 1993-08-12
DE4327025 1993-08-12

Publications (2)

Publication Number Publication Date
AU6893894A true AU6893894A (en) 1995-02-23
AU668313B2 AU668313B2 (en) 1996-04-26

Family

ID=6494984

Family Applications (1)

Application Number Title Priority Date Filing Date
AU68938/94A Ceased AU668313B2 (en) 1993-08-12 1994-08-05 A process for working up thin acid

Country Status (9)

Country Link
EP (1) EP0638515B1 (en)
JP (1) JPH082905A (en)
AU (1) AU668313B2 (en)
CA (1) CA2130212A1 (en)
DE (1) DE59409261D1 (en)
ES (1) ES2146628T3 (en)
FI (1) FI943702A (en)
NO (1) NO942973L (en)
PL (1) PL178525B1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19812260A1 (en) * 1998-03-20 1999-09-23 Bayer Ag Production of iron oxide pigments from dilute acid formed in manufacture of titanium dioxide
DE19812262A1 (en) 1998-03-20 1999-09-23 Bayer Ag Production of gypsum and iron oxide pigments from dilute acid formed in the manufacture of titanium dioxide
DE19812261A1 (en) * 1998-03-20 1999-09-23 Bayer Ag Production of gypsum and iron oxide pigments from dilute acid formed in the manufacture of titanium dioxide
US6726891B2 (en) 2000-07-31 2004-04-27 Sumitomo Chemical Company, Limited Titanium oxide production process
DE20321107U1 (en) † 2003-07-17 2005-12-15 Kerr-Mcgee Pigments Gmbh Producing a reducing agent containing iron(II) sulfate, used for reducing the soluble chromate content of cement, comprises concentrating spent sulfuric acid and separating the sulfuric acid from the precipitate
WO2008034921A1 (en) 2006-09-18 2008-03-27 Fertinagro Nutrientes, S.L. Process for obtaining fertilizers from tio2 subproducts, and products obtained in this manner
CN103572058B (en) * 2012-07-31 2016-01-20 有研稀土新材料股份有限公司 A kind of method of enrichment rare earth rare elements and the white gypsum of preparation from sulfate process titanium dioxide waste liquid

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3016286A (en) * 1960-02-29 1962-01-09 Ishihara Sangyo Kaisha Method for the treatment of waste acid resulting from titanium dioxide production
JPS6012283B2 (en) * 1975-05-31 1985-04-01 東ソー株式会社 Method for recovering valuable components from ferrous ammonium sulfate
US4207295A (en) * 1979-02-13 1980-06-10 Union Carbide Corporation Processing of chromium ore
SU923949A1 (en) * 1979-12-07 1982-04-30 Proizv Ob Polimir Im 50 Letiya Process for producing ammonium sulphate
DE3115937A1 (en) * 1981-04-22 1982-11-18 Vajna, Sandor, Dipl.-Ing.Chem. Dr.techn. Process for producing virtually pure solutions of alkali metal sulphates or ammonium sulphates or of sulphuric acid from effluents
DE3123361C2 (en) * 1981-06-12 1983-10-06 Bayer Ag, 5090 Leverkusen Process for working up solutions containing chromium (VI)
DE3524053A1 (en) * 1985-07-05 1987-01-08 Bayer Antwerpen Nv METHOD FOR PRODUCING HIGH QUALITY TITANIUM DIOXIDE BY THE SULFATE METHOD
CN1023107C (en) * 1990-11-24 1993-12-15 侯相林 Process for recovery of chromium from waste solution for electroplating chromium
FR2683217B3 (en) * 1991-11-06 1994-02-11 Papailhau Jean Louis PROCESS FOR THE TREATMENT OF ACID EFFLUENTS FROM THE MANUFACTURE OF TITANIUM OXIDE PIGMENTS ACCORDING TO A SULFURIC PROCESS.
JP2968877B2 (en) * 1991-11-08 1999-11-02 日鉄鉱業株式会社 Method for recovering sulfuric acid from waste sulfuric acid containing metal sulfate

Also Published As

Publication number Publication date
EP0638515B1 (en) 2000-04-05
FI943702A (en) 1995-02-13
CA2130212A1 (en) 1995-02-13
DE59409261D1 (en) 2000-05-11
NO942973D0 (en) 1994-08-11
AU668313B2 (en) 1996-04-26
PL304612A1 (en) 1995-02-20
FI943702A0 (en) 1994-08-10
NO942973L (en) 1995-02-13
EP0638515A3 (en) 1995-09-27
JPH082905A (en) 1996-01-09
PL178525B1 (en) 2000-05-31
ES2146628T3 (en) 2000-08-16
EP0638515A2 (en) 1995-02-15

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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired