NO932934D0 - Forbedring ved behandling av svovelsyreavfall ved gipsfelling i en titandioksydprosess - Google Patents

Forbedring ved behandling av svovelsyreavfall ved gipsfelling i en titandioksydprosess

Info

Publication number
NO932934D0
NO932934D0 NO1993932934A NO932934A NO932934D0 NO 932934 D0 NO932934 D0 NO 932934D0 NO 1993932934 A NO1993932934 A NO 1993932934A NO 932934 A NO932934 A NO 932934A NO 932934 D0 NO932934 D0 NO 932934D0
Authority
NO
Norway
Prior art keywords
improvement
treatment
sulfuric acid
titanium dioxide
acid waste
Prior art date
Application number
NO1993932934A
Other languages
English (en)
Other versions
NO932934L (no
NO305547B1 (no
Inventor
Roger Laferriere
Pierre Beaupre
Original Assignee
Kronos Inc
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 Kronos Inc filed Critical Kronos Inc
Publication of NO932934D0 publication Critical patent/NO932934D0/no
Publication of NO932934L publication Critical patent/NO932934L/no
Publication of NO305547B1 publication Critical patent/NO305547B1/no

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • 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
    • C01F11/46—Sulfates
    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Inorganic Chemistry (AREA)
  • Geology (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
NO932934A 1992-08-21 1993-08-18 FremgangsmÕte for behandling av svovelsyreavfall i sammenheng med en prosess for fremstilling av titandioksydpigment NO305547B1 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/933,227 US5298169A (en) 1992-08-21 1992-08-21 Treatment of waste sulfuric acid by gypsum precipitation in a titanium dioxide process
CA002083091A CA2083091C (fr) 1992-08-21 1992-11-17 Traitement de l'acide sulfurique use

Publications (3)

Publication Number Publication Date
NO932934D0 true NO932934D0 (no) 1993-08-18
NO932934L NO932934L (no) 1994-02-22
NO305547B1 NO305547B1 (no) 1999-06-21

Family

ID=25675671

Family Applications (1)

Application Number Title Priority Date Filing Date
NO932934A NO305547B1 (no) 1992-08-21 1993-08-18 FremgangsmÕte for behandling av svovelsyreavfall i sammenheng med en prosess for fremstilling av titandioksydpigment

Country Status (3)

Country Link
US (1) US5298169A (no)
CA (1) CA2083091C (no)
NO (1) NO305547B1 (no)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0757971A1 (en) * 1995-01-31 1997-02-12 Compania General Yesera, S.A. Process for obtaining a charge of dihydrate calcium sulfate in the form of acicular crystals and utilization in the paper making industry
CN103058253A (zh) * 2013-01-21 2013-04-24 菲徳勒环境生态工程（苏州）有限公司 一种利用钛白废水中游离硫酸制取石膏的方法
CN103073043B (zh) * 2013-02-06 2014-12-03 武汉理工大学 一种增大钛白石膏颗粒结晶生长的方法
CN103395816B (zh) * 2013-07-22 2015-04-22 蓝星（成都）新材料有限公司 一种利用芳纶ⅱ纺丝废酸液生产二水硫酸钙的工艺
CN104085974A (zh) * 2014-06-21 2014-10-08 安徽华塑股份有限公司 废硫酸处理工艺
CN105836862B (zh) * 2016-04-01 2018-12-18 郑州轻工业学院 一种沸腾氯化法生产四氯化钛过程中收尘灰的综合处理方法
CN109231266B (zh) * 2018-10-26 2021-01-26 攀钢集团攀枝花钢铁研究院有限公司 酸解钛渣的方法
CN113371750B (zh) * 2021-06-08 2023-07-28 龙佰集团股份有限公司 联合氯化法钛白废酸、硫酸法钛白废酸制备硫酸钡的方法
CN113845144A (zh) * 2021-09-30 2021-12-28 中国有色集团（广西）平桂飞碟股份有限公司 一种硫酸法钛白酸解废料无害化资源利用方法
CN115477411B (zh) * 2022-08-22 2024-01-26 乳源瑶族自治县东阳光化成箔有限公司 一种同时处理高低浓度电极箔硫酸废液的处理方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3375066A (en) * 1963-08-24 1968-03-26 Yawata Chem Ind Co Ltd Process for the continuous production of gypsum and iron oxide from waste sulfuric acid pickle liquor and a calcium compound
DE1592406B2 (de) * 1967-09-25 1978-12-14 Bayer Ag, 5090 Leverkusen Verfahren zur Herstellung von Titandioxydpigmenten mit hohem Weißgrad
CA1053876A (en) * 1973-12-14 1979-05-08 Arthur A. Bellinger Method and means of growing coarse gypsum and magnetite
GB1573187A (en) * 1977-09-16 1980-08-20 Tioxide Group Ltd Purification process

Also Published As

Publication number Publication date
CA2083091A1 (fr) 1994-05-18
NO932934L (no) 1994-02-22
NO305547B1 (no) 1999-06-21
CA2083091C (fr) 1996-12-03
US5298169A (en) 1994-03-29

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