BR9402598A - Processo para produzir alumina - Google Patents
Processo para produzir aluminaInfo
- Publication number
- BR9402598A BR9402598A BR9402598A BR9402598A BR9402598A BR 9402598 A BR9402598 A BR 9402598A BR 9402598 A BR9402598 A BR 9402598A BR 9402598 A BR9402598 A BR 9402598A BR 9402598 A BR9402598 A BR 9402598A
- Authority
- BR
- Brazil
- Prior art keywords
- producing alumina
- alumina
- producing
- Prior art date
Links
Classifications
-
- 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
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
- C01F7/06—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
- C01F7/0613—Pretreatment of the minerals, e.g. grinding
-
- 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
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/46—Purification of aluminium oxide, aluminium hydroxide or aluminates
- C01F7/47—Purification of aluminium oxide, aluminium hydroxide or aluminates of aluminates, e.g. removal of compounds of Si, Fe, Ga or of organic compounds from Bayer process liquors
- C01F7/473—Removal of organic compounds, e.g. sodium oxalate
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB939313545A GB9313545D0 (en) | 1993-06-30 | 1993-06-30 | Production of alumina |
GB9400690A GB9400690D0 (en) | 1994-01-14 | 1994-01-14 | Production of alumina |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9402598A true BR9402598A (pt) | 1995-03-28 |
Family
ID=26303152
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9402598A BR9402598A (pt) | 1993-06-30 | 1994-06-30 | Processo para produzir alumina |
Country Status (4)
Country | Link |
---|---|
US (1) | US5547647A (pt) |
AU (1) | AU669445B2 (pt) |
BR (1) | BR9402598A (pt) |
CA (1) | CA2126885A1 (pt) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6293973B1 (en) | 1996-10-11 | 2001-09-25 | Nalco Chemical Company | Method of controlling oxalate precipitation in bayer process liquor |
BR112020016418A2 (pt) * | 2018-02-23 | 2020-12-15 | Rio Tinto Alcan International Limited | Processo bayer |
AU2019309529A1 (en) | 2018-07-27 | 2021-03-18 | Solenis Technologies, L.P. | Systems and methods for alumina production |
CN110169233A (zh) * | 2019-04-17 | 2019-08-27 | 贺州学院 | 一种蔓性千斤拔丸化种子的制备方法 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US465065A (en) * | 1891-12-15 | Egg-cell case | ||
US509309A (en) * | 1893-11-21 | Oiler | ||
US3917529A (en) * | 1974-07-01 | 1975-11-04 | Nalco Chemical Co | Process for the destabilization and separation of ilmenite (FEO TIO2) tailings |
DE2518431C3 (de) * | 1975-04-25 | 1982-02-04 | Giulini Chemie Gmbh, 6700 Ludwigshafen | Verfarhen zur Entfernung der schädlichen organischen Verbindungen aus der bei der Tonerdegewinnung nach dem Bayer-Verfarhen anfallenden Aluminatlauge |
FR2328660A1 (fr) * | 1975-10-21 | 1977-05-20 | Pechiney Aluminium | Perfectionnement a l'epuration de solutions en circulation dans le cycle bayer |
JPS54110199A (en) * | 1978-02-17 | 1979-08-29 | Sumitomo Aluminium Smelting Co | Method of removing organics from circulating aluminic acid alkali solution |
US4275043A (en) * | 1979-01-31 | 1981-06-23 | Alcan Research And Development Limited | Removal of oxalate from bayer process liquor |
HU180650B (en) * | 1979-10-30 | 1983-04-29 | Magyar Aluminium | Process for diminishing organic content of bayer cycle of alum earth production |
US4275042A (en) * | 1980-01-22 | 1981-06-23 | Alcan Research And Development Limited | Removal of oxalate from Bayer process liquor |
US4519989A (en) * | 1983-02-22 | 1985-05-28 | Aluminum Company Of America | Removal of organic contaminants from bauxite and other ores |
US4578255A (en) * | 1984-12-27 | 1986-03-25 | Kaiser Aluminum Chemical Corporation | Purification of Bayer process liquors |
FR2581053B1 (fr) * | 1985-04-30 | 1987-05-29 | Pechiney Aluminium | Production d'alumine a partir de bauxite a gibbsite a basse teneur en silice reactive |
US5093092A (en) * | 1991-02-28 | 1992-03-03 | Aluminum Company Of America | Purification of bayer process liquor with alumina coated with a layer or carbon |
CA2126914A1 (en) * | 1993-06-30 | 1994-12-31 | Gillain Mary Moody | Production of alumina |
-
1994
- 1994-06-28 CA CA002126885A patent/CA2126885A1/en not_active Abandoned
- 1994-06-29 US US08/268,022 patent/US5547647A/en not_active Expired - Fee Related
- 1994-06-30 AU AU66094/94A patent/AU669445B2/en not_active Ceased
- 1994-06-30 BR BR9402598A patent/BR9402598A/pt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US5547647A (en) | 1996-08-20 |
AU669445B2 (en) | 1996-06-06 |
AU6609494A (en) | 1995-01-12 |
CA2126885A1 (en) | 1994-12-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FB36 | Technical and formal requirements: requirement - article 36 of industrial property law | ||
FF | Decision: intention to grant | ||
FG9A | Patent or certificate of addition granted | ||
TC | Change of name | ||
B24C | Patent annual fee: request for for restoration |
Free format text: REFERENTE A 11A,12A,13A,14A,15A E 16A ANUIDADES. |
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B24H | Lapse because of non-payment of annual fees (definitively: art 78 iv lpi) |
Free format text: EXTINCAO DEFINITIVA - ART. 78 INCISO IV DA LPI |
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B24F | Patent annual fee: publication cancelled |
Free format text: ANULADA A PUBLICACAO CODIGO 24.8 NA RPI NO 2242 DE 24/12/2013 POR TER SIDO INDEVIDA. |
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B21F | Lapse acc. art. 78, item iv - on non-payment of the annual fees in time |
Free format text: REFERENTE AS 11A, 12A, 13A, 14A, 15A E 16A ANUIDADES. |
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B24J | Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12) |
Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2605 DE 08-12-2020 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013. |