GB552583A - Extraction of aluminium oxide - Google Patents
Extraction of aluminium oxideInfo
- Publication number
- GB552583A GB552583A GB12011/41A GB1201141A GB552583A GB 552583 A GB552583 A GB 552583A GB 12011/41 A GB12011/41 A GB 12011/41A GB 1201141 A GB1201141 A GB 1201141A GB 552583 A GB552583 A GB 552583A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminium
- solution
- aluminium oxide
- nitrides
- evolved
- 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
- C01F7/0693—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 from waste-like raw materials, e.g. fly ash or Bayer calcination dust
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
552,583. Recovering aluminium from residues. SINGER, F., and BLASS, L. Sept. 19, 1941, No. 12011. [Class 82 (i)] [Also in Group III] Aluminium oxide is recovered from aluminium, or aluminium alloy, dross skimmings or scraps containing aluminium oxide, carbide and nitride fluxes such as fluorides, chlorides and metallic particles by treating the material with a caustic soda solution the concentration of which and the temperature of the reaction are kept sufficiently low to produce a solution containing a higher proportion of aluminium to silicon than the original material. The temperature is kept below 110C. and the concentration of the solution below 27 per cent. and preferably below 18 per cent. After separating metallic aluminium the comminuted material is treated with the solution in, e.g. an iron vessel which, if gas is evolved owing to the pressure of carbides, nitrides or metal is a closed container. If ammonia is evolved owing to the pressure 'of nitrides it may be collected as ammonium sulphate. The residue after removal of the alkali aluminate solution may be treated with ammonia or an acid to remove copper or nickel oxides. Aluminium oxide may be obtained from the aluminate solution in known manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB12011/41A GB552583A (en) | 1941-09-19 | 1941-09-19 | Extraction of aluminium oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB12011/41A GB552583A (en) | 1941-09-19 | 1941-09-19 | Extraction of aluminium oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB552583A true GB552583A (en) | 1943-04-15 |
Family
ID=9996795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12011/41A Expired GB552583A (en) | 1941-09-19 | 1941-09-19 | Extraction of aluminium oxide |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB552583A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2604379A (en) * | 1947-01-23 | 1952-07-22 | Ancor Corp | Alumina extraction |
| US2939765A (en) * | 1958-03-07 | 1960-06-07 | Vaw Ver Aluminium Werke Ag | Method for reducing the silica content of alumina containing materials of the bauxite type |
| US2939764A (en) * | 1958-03-07 | 1960-06-07 | Vaw Ver Aluminium Werke Ag | Method for reducing the silica content of alumina-containing materials of the clay type |
| WO1991009978A1 (en) * | 1989-12-27 | 1991-07-11 | Alcan International Limited | Process for converting dross residues to useful products |
-
1941
- 1941-09-19 GB GB12011/41A patent/GB552583A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2604379A (en) * | 1947-01-23 | 1952-07-22 | Ancor Corp | Alumina extraction |
| US2939765A (en) * | 1958-03-07 | 1960-06-07 | Vaw Ver Aluminium Werke Ag | Method for reducing the silica content of alumina containing materials of the bauxite type |
| US2939764A (en) * | 1958-03-07 | 1960-06-07 | Vaw Ver Aluminium Werke Ag | Method for reducing the silica content of alumina-containing materials of the clay type |
| WO1991009978A1 (en) * | 1989-12-27 | 1991-07-11 | Alcan International Limited | Process for converting dross residues to useful products |
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