GB604677A - Method of manufacture of materials required in the electrometallurgy of aluminium - Google Patents
Method of manufacture of materials required in the electrometallurgy of aluminiumInfo
- Publication number
- GB604677A GB604677A GB8849/45A GB884945A GB604677A GB 604677 A GB604677 A GB 604677A GB 8849/45 A GB8849/45 A GB 8849/45A GB 884945 A GB884945 A GB 884945A GB 604677 A GB604677 A GB 604677A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sodium
- produce
- aluminium
- fluosilicate
- fluoride
- 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
- C01F7/48—Halides, with or without other cations besides aluminium
- C01F7/50—Fluorides
- C01F7/54—Double compounds containing both aluminium and alkali metals or alkaline-earth metals
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
- C25C3/12—Anodes
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/18—Electrolytes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Pure carbon for electrodes and double fluoride of sodium and aluminium for electrolytes are produced by treating granular coals yielding mainly silicious ashes with aqueous hydrofluoric acid preferably at about 70 DEG C. until the ash yield falls below 1 per cent, treating the resulting fluosilicic acid with common salt to produce a precipitate of sodium fluosilicate and a solution of hydrochloric acid, and heating the washed sodium fluosilicate with alumina to produce silica-free double fluoride of aluminium and sodium. The hydrochloric acid may be used to eliminate iron from coals used to make anodes for manufacturing silicon-aluminium alloys. The sodium fluosilicate may be heated with alumina in aqueous suspension or at 500 DEG C. dry to produce 2 AlF3.3NaF or at 500 DEG C. with added sodium carbonate to produce 2 AlF3. 6 NaF. The double flouride and silica may be separated by flotation or by the method of Specification 589,944. The treated coal is washed, dried, heated at 1300 DEG C. to expel gases and form a coke suitable for electrodes. Specification 270,703, [Class 50], also is referred to. The Specification as open to inspection under Sect. 91 comprises p also the production of cryolite from sodium aluminate and sodium fluoride produced from sodium fluosilicate. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR604677X | 1942-04-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB604677A true GB604677A (en) | 1948-07-08 |
Family
ID=8973485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8849/45A Expired GB604677A (en) | 1942-04-21 | 1945-04-10 | Method of manufacture of materials required in the electrometallurgy of aluminium |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE450274A (en) |
| GB (1) | GB604677A (en) |
| NL (1) | NL61289C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521559A (en) * | 2016-12-01 | 2017-03-22 | 山东南山铝业股份有限公司 | Low-silicon electrolytic aluminum liquid and preparation method thereof |
| CN106757160A (en) * | 2016-12-01 | 2017-05-31 | 山东南山铝业股份有限公司 | Low silicon prebaked anode and preparation method thereof |
| CN115849419A (en) * | 2022-11-22 | 2023-03-28 | 贵州大学 | Production method of fluorine-carrying alumina and application of produced fluorine-carrying alumina |
-
0
- BE BE450274D patent/BE450274A/xx unknown
- NL NL61289D patent/NL61289C/xx active
-
1945
- 1945-04-10 GB GB8849/45A patent/GB604677A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521559A (en) * | 2016-12-01 | 2017-03-22 | 山东南山铝业股份有限公司 | Low-silicon electrolytic aluminum liquid and preparation method thereof |
| CN106757160A (en) * | 2016-12-01 | 2017-05-31 | 山东南山铝业股份有限公司 | Low silicon prebaked anode and preparation method thereof |
| CN106757160B (en) * | 2016-12-01 | 2019-07-02 | 山东南山铝业股份有限公司 | Low silicon prebaked anode and preparation method thereof |
| CN115849419A (en) * | 2022-11-22 | 2023-03-28 | 贵州大学 | Production method of fluorine-carrying alumina and application of produced fluorine-carrying alumina |
Also Published As
| Publication number | Publication date |
|---|---|
| BE450274A (en) | |
| NL61289C (en) |
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