BR9205965A - Process for the control of sodium oxalate concentration in sodium aluminate solutions - Google Patents
Process for the control of sodium oxalate concentration in sodium aluminate solutionsInfo
- Publication number
- BR9205965A BR9205965A BR9205965A BR9205965A BR9205965A BR 9205965 A BR9205965 A BR 9205965A BR 9205965 A BR9205965 A BR 9205965A BR 9205965 A BR9205965 A BR 9205965A BR 9205965 A BR9205965 A BR 9205965A
- Authority
- BR
- Brazil
- Prior art keywords
- sodium
- control
- aluminate solutions
- oxalate concentration
- sodium aluminate
- 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
- C01F7/46—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
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US69525691A | 1991-05-03 | 1991-05-03 | |
PCT/CA1992/000188 WO1992019537A1 (en) | 1991-05-03 | 1992-05-01 | Method for the control of sodium oxalate levels in sodium aluminate solutions |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9205965A true BR9205965A (en) | 1995-03-01 |
Family
ID=24792272
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9205965A BR9205965A (en) | 1991-05-03 | 1992-05-01 | Process for the control of sodium oxalate concentration in sodium aluminate solutions |
Country Status (5)
Country | Link |
---|---|
AU (1) | AU650747B2 (en) |
BR (1) | BR9205965A (en) |
CA (1) | CA2108785C (en) |
IE (1) | IE68425B1 (en) |
WO (1) | WO1992019537A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69419712T2 (en) * | 1994-01-07 | 2000-01-13 | Alcan International Ltd., Montreal | Process for removal of impurities from Bayer process liquors by crystallization |
FR2794449B1 (en) * | 1999-06-04 | 2001-10-19 | Pechiney Aluminium | METHOD FOR PURIFYING SODIUM ALUMINATE LIQUORS CONTAINING SODIUM OXALATE FOR USE OF RESIDUES |
CN112047366A (en) * | 2020-08-11 | 2020-12-08 | 中国铝业股份有限公司 | Method for removing sodium oxalate in alumina decomposition mother liquor by using scabs of decomposition tank |
CN112939040A (en) * | 2021-03-31 | 2021-06-11 | 中铝集团山西交口兴华科技股份有限公司 | Method for removing sodium oxalate in production process of alumina and fine alumina |
CN114408956B (en) * | 2022-01-07 | 2023-08-22 | 中铝山东有限公司 | Comprehensive carbon removal method and system for high-organic matter sodium aluminate solution |
CN116282102A (en) * | 2022-11-29 | 2023-06-23 | 山西华兴铝业有限公司 | Method for adding seeds in organic matter removal flow |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2317226A1 (en) * | 1975-07-07 | 1977-02-04 | Alcan Res & Dev | IMPROVEMENTS IN ALUMINA PRODUCTION |
JPS5456098A (en) * | 1977-10-12 | 1979-05-04 | Nippon Light Metal Co | Method of producing crude aluminum hydrate particles |
US4263261A (en) * | 1978-12-21 | 1981-04-21 | Sumitomo Aluminium Smelting Company, Limited | Method for the removal of impurities from sodium aluminate solution |
GB2211832A (en) * | 1987-10-30 | 1989-07-12 | Commw Scient Ind Res Org | Bayer process liquor purification |
AU613758B2 (en) * | 1988-06-03 | 1991-08-08 | Vereinigte Aluminium-Werke Aktiengesellschaft | Method for removing sodium oxalate from caustic aluminate liquors |
-
1992
- 1992-05-01 CA CA002108785A patent/CA2108785C/en not_active Expired - Lifetime
- 1992-05-01 BR BR9205965A patent/BR9205965A/en not_active IP Right Cessation
- 1992-05-01 WO PCT/CA1992/000188 patent/WO1992019537A1/en active Application Filing
- 1992-05-01 AU AU16642/92A patent/AU650747B2/en not_active Expired
- 1992-07-01 IE IE921423A patent/IE68425B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
IE68425B1 (en) | 1996-06-12 |
IE921423A1 (en) | 1992-11-04 |
CA2108785C (en) | 1998-06-16 |
AU650747B2 (en) | 1994-06-30 |
AU1664292A (en) | 1992-12-21 |
WO1992019537A1 (en) | 1992-11-12 |
CA2108785A1 (en) | 1992-11-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
BR8603413A (en) | MACHINE CONTROL SYSTEM AND MACHINE OPERATING PROCESS | |
BR9004557A (en) | PROCESS CONTROL DEVICE AND CONTROL DEVICE | |
BR8605487A (en) | COOLING PROCESS CONTROL SYSTEM FOR ELECTRONIC APPLIANCE | |
BR9203445A (en) | PROCESS FOR COPYLIMERIZATION IN DISPERSION | |
BR8807861A (en) | CONTROL AND PROCESS DEVICES FOR OPTICAL INSPECTION SYSTEM | |
BR8501625A (en) | CONTROL PROCESS AND SYSTEM TO OPERATE COOLING SYSTEM | |
BR8404185A (en) | COMPOSITION AND PROCESS FOR TREATING AQUEOUS SYSTEMS | |
BR8302202A (en) | PROCESS FOR THE PRODUCTION OF ZEOLITES WITH HIGH CONTENT IN SILICA, WITH CONTROL OF THE MORPHOLOGY OF THE ZEOLITES SO PRODUCED | |
BR9000731A (en) | PROCESS FOR SEPARATION OF SALTS IN AGUA DO MAR | |
BR9000887A (en) | PROCESS TO CONTROL INTER-DUCT DATA TRANSFERS IN A DATA PROCESSING SYSTEM | |
BR8907498A (en) | SYSTEM FOR PROCESS CONTROL BASED ON CENTRALIZED CONTROL | |
BR8802937A (en) | 4-NITRO-N-FENYL-PIRAZOL DERIVATIVES, PROCESS, COMPOSITION AND PEST CONTROL | |
BR9006974A (en) | SUSPENSION CONTROL PROCESS AND DEVICE | |
BR9205965A (en) | Process for the control of sodium oxalate concentration in sodium aluminate solutions | |
BR8705694A (en) | GALIO RECOVERY PROCESS CONTAINED IN AN Aqueous SODIUM ALUMINATE WATER SOLUTION | |
BR7604421A (en) | PROCESS FOR LEVEL CONTROL OF SODIUM OXALATE IN LIQUOR USED IN ALUMINUM PRODUCTION | |
BR8707482A (en) | PROCESS FOR THE CONTROL OF BIOINCRUSTATION IN AQUEOUS SYSTEM, BIOCIDALLY ACTIVE COMPOSITION AND COMPOSITION | |
BR9300395A (en) | SYSTEM AND PROCESS FOR WINDOW CONTROL | |
BR9107052A (en) | Improved process control for purifying linear paraffins. | |
BR9002900A (en) | PROCESS FOR CONTROL OF SEDIMENTATION IN AN INHERENTLY COLLOIDALLY STABLE MIXTURE | |
BR9307490A (en) | Process for controlling video game graphics | |
BR9606529A (en) | Purification process for sodium aluminate solutions containing sodium oxalate | |
BR9103819A (en) | PROCESS TO GENERATE BROMO IN AN Aqueous Solution CONTAINING ION BROMETO | |
BR8602963A (en) | PROCESS FOR APPLICATION OF DOUBLE LAYER FUNDS IN POTS | |
BR8506413A (en) | PROCESS FOR REDUCING THE HYDROLYSABLE CHLORINE CONTENT IN GLYCIDIL COMPOUNDS |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EE | Request for examination | ||
FB36 | Technical and formal requirements: requirement - article 36 of industrial property law | ||
FF | Decision: intention to grant | ||
FG9A | Patent or certificate of addition granted | ||
B21A | Patent or certificate of addition expired [chapter 21.1 patent gazette] |
Free format text: PATENTE EXTINTA EM 01/05/2012 |