GB1436261A - Alumina production - Google Patents
Alumina productionInfo
- Publication number
- GB1436261A GB1436261A GB2390073A GB2390073A GB1436261A GB 1436261 A GB1436261 A GB 1436261A GB 2390073 A GB2390073 A GB 2390073A GB 2390073 A GB2390073 A GB 2390073A GB 1436261 A GB1436261 A GB 1436261A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nacl
- naoh
- concentration
- loss
- alumina production
- 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.)
- Expired
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
- C01F7/062—Digestion
- C01F7/0633—Digestion characterised by the use of additives
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Treatment Of Sludge (AREA)
Abstract
1436261 Reducing NaOH loss in Bayer process ALUTERY ALUMIMUMIPARI TERVEZO VALLALAT and FEMIPARI KUTATO INTEZET 18 May 1973 23900/73 Heading C1A A method of reducing the loss of NaOH during alumina production according to the Bayer process wherein NaCl is added to the digestion liquor such that a concentration of 1-40 g./l., preferably 5-20 g./l. is maintained therein. The addition of NaCl is preferably continuous NaCl may also be added to recycling digestion liquor after addition of NaOH to bring NaOH concentration to 250-500 g./l. to NaCl concentration of 20-80 g./l. to salt out Na 2 .CO 3 .
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HUAL019849 | 1971-12-30 | ||
| HUAL008074 | 1972-05-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1436261A true GB1436261A (en) | 1976-05-19 |
Family
ID=26318350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2390073A Expired GB1436261A (en) | 1971-12-30 | 1973-05-18 | Alumina production |
Country Status (7)
| Country | Link |
|---|---|
| DE (1) | DE2262936A1 (en) |
| FR (1) | FR2166188B1 (en) |
| GB (1) | GB1436261A (en) |
| IN (1) | IN139739B (en) |
| IT (1) | IT976338B (en) |
| RO (1) | RO70968A (en) |
| SU (1) | SU450394A3 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE678788C (en) * | 1936-05-12 | 1941-04-16 | Rudolf Scholder Dr | Digestion of bauxite and other alumina-containing substances by leaching |
-
1972
- 1972-12-22 DE DE2262936A patent/DE2262936A1/en active Pending
- 1972-12-28 IN IN2264/72A patent/IN139739B/en unknown
- 1972-12-28 RO RO7273348A patent/RO70968A/en unknown
- 1972-12-29 SU SU721865533A patent/SU450394A3/en active
- 1972-12-29 IT IT7271272A patent/IT976338B/en active
- 1972-12-29 FR FR7246951A patent/FR2166188B1/fr not_active Expired
-
1973
- 1973-05-18 GB GB2390073A patent/GB1436261A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| RO70968A (en) | 1981-08-17 |
| IT976338B (en) | 1974-08-20 |
| FR2166188A1 (en) | 1973-08-10 |
| DE2262936A1 (en) | 1973-07-12 |
| IN139739B (en) | 1976-07-24 |
| FR2166188B1 (en) | 1975-11-07 |
| SU450394A3 (en) | 1974-11-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |