NO932934D0 - Forbedring ved behandling av svovelsyreavfall ved gipsfelling i en titandioksydprosess - Google Patents
Forbedring ved behandling av svovelsyreavfall ved gipsfelling i en titandioksydprosessInfo
- 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
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)
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)
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)
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 |
-
1992
- 1992-08-21 US US07/933,227 patent/US5298169A/en not_active Expired - Fee Related
- 1992-11-17 CA CA002083091A patent/CA2083091C/fr not_active Expired - Fee Related
-
1993
- 1993-08-18 NO NO932934A patent/NO305547B1/no unknown
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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