GB498864A - A process for the preparation of alumina - Google Patents
A process for the preparation of aluminaInfo
- Publication number
- GB498864A GB498864A GB20112/37A GB2011237A GB498864A GB 498864 A GB498864 A GB 498864A GB 20112/37 A GB20112/37 A GB 20112/37A GB 2011237 A GB2011237 A GB 2011237A GB 498864 A GB498864 A GB 498864A
- Authority
- GB
- United Kingdom
- Prior art keywords
- treated
- mixed
- electric furnace
- alumina
- per cent
- 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
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/006—Starting from ores containing non ferrous metallic oxides
-
- 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
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
In a process for the production of alumina wherein aluminous ore is treated with caustic soda, the residual red mud is mixed with limestone and coal dust and treated in an electric furnace. A slag comprising calcium and sodium aluminates is formed and floats on a bath of cast iron. The slag is treated with soda and is transformed to sodium aluminate which is returned to the normal process for the production of alumina. Pyrites ashes may be mixed with the red mud to increase the yield of iron which may contain about 7 per cent silicon, a small percentage of titanium and less than 1 per cent of sulphur. The Specification as open to inspection under Sect. 91 is not limited to treatment in an electric furnace.ALSO:Cast iron containing about 7 per cent of silicon, a small percentage of titanium and less than 1 per cent of sulphur is obtained in a process for the production of alumina, wherein aluminous ore is treated with caustic soda, the residual red mud is mixed with limestone and coal dust and treated in an electric furnace. A slag comprising calcium and sodium aluminates is formed floating on a bath of the cast iron. Pyrites ashes may be mixed with the red mud to increase the yield of iron. The Specification as open to inspection under Sect. 91 is not limited to treatment in an electric furnace. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT498864X | 1936-07-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB498864A true GB498864A (en) | 1939-01-16 |
Family
ID=11271785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20112/37A Expired GB498864A (en) | 1936-07-20 | 1937-07-20 | A process for the preparation of alumina |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB498864A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2516364A (en) * | 2013-06-14 | 2015-01-21 | Wassim Mounir Freij | Method for processing red muds |
-
1937
- 1937-07-20 GB GB20112/37A patent/GB498864A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2516364A (en) * | 2013-06-14 | 2015-01-21 | Wassim Mounir Freij | Method for processing red muds |
| GB2516364B (en) * | 2013-06-14 | 2017-11-15 | Mounir Freij Wassim | Method for processing red muds |
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