GB295227A - A process for the production of aluminium oxide and other aluminium compounds - Google Patents
A process for the production of aluminium oxide and other aluminium compoundsInfo
- Publication number
- GB295227A GB295227A GB1173727A GB1173727A GB295227A GB 295227 A GB295227 A GB 295227A GB 1173727 A GB1173727 A GB 1173727A GB 1173727 A GB1173727 A GB 1173727A GB 295227 A GB295227 A GB 295227A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminium
- chlorides
- chlorine
- treatment
- sulphide
- 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
- C01F7/38—Preparation of aluminium oxide by thermal reduction of aluminous minerals
- C01F7/40—Preparation of aluminium oxide by thermal reduction of aluminous minerals in the presence of aluminium sulfide
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Thermal Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Developing Agents For Electrophotography (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
295,227. Haglund, T. R. May 2, 1927. Aluminium oxide and sulphate. - Aluminium sulphidiferous material is first treated to convert the aluminium sulphide into oxide under such conditions that sulphide impurities are left substantially unaffected and then these impurities are removed by treatment of the mass with chlorine or chlorine compounds or mixtures thereof, or with chlorides, sulphates and nitrates or other salts of such metals as are precipitated by sulphuretted hydrogen in acid solution, so that sulphides of metals such as iron titanium or calcium are converted into volatile or soluble salts. Before treatment with chlorine, corundum crystals are separated from the decomposition product, and aluminium hydrate is heated to convert it to oxide. The treatment with chlorine hydrogen chloride, sulpho-chlorides, or aluminium chloride preferably proceeds at above 100‹ C. and so that chlorides of iron and titanium are volatilized. Aluminium hydrate during or after the treatment is heated preferably in a neutral or reducing atmosphere to form aluminium oxide with low solubilitv in acids. Part of the hydrate obtained is converted into chloride and is heated in a moist atmosphere whereby aluminium hydrate is formed and sulphides of impurities are converted to chlorides. Chlorine is used as a gas, liquefied, under pressure or in solution or dry, and chlorides formed may be dissolved out with water. The products during treatment may be stirred in water, and a reducing substance such as hydrogen sulphide or aluminium sulphide added to prevent precipitation of basic iron salts. If the decomposition product is alkaline it is neutralized before treatment with chlorine, and on treating it in water with chlorides, sulphates or nitrates of metals such copper, lead, arsenic, antimony or tin which are precipitated by hydrogen sulphide in acid solution, sulphides of these metals are precipitated, and metallic impurities dissolved and filtered off. The aluminium hydroxide is then dissolved in an acid, such as sulphuric acid. The decomposition product may be subjected to magnetic separation. Specification 232,549 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1173727A GB295227A (en) | 1927-05-02 | 1927-05-02 | A process for the production of aluminium oxide and other aluminium compounds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1173727A GB295227A (en) | 1927-05-02 | 1927-05-02 | A process for the production of aluminium oxide and other aluminium compounds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB295227A true GB295227A (en) | 1928-08-02 |
Family
ID=9991737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1173727A Expired GB295227A (en) | 1927-05-02 | 1927-05-02 | A process for the production of aluminium oxide and other aluminium compounds |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB295227A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3397958A (en) * | 1965-08-10 | 1968-08-20 | Pechiney Prod Chimiques Sa | Process for the production of purified aluminum nitride |
| CN115784296A (en) * | 2022-11-25 | 2023-03-14 | 广西埃索凯循环科技有限公司 | Preparation method of high-chlorine zinc sulfate suitable for high-quality trace element premix feed |
-
1927
- 1927-05-02 GB GB1173727A patent/GB295227A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3397958A (en) * | 1965-08-10 | 1968-08-20 | Pechiney Prod Chimiques Sa | Process for the production of purified aluminum nitride |
| CN115784296A (en) * | 2022-11-25 | 2023-03-14 | 广西埃索凯循环科技有限公司 | Preparation method of high-chlorine zinc sulfate suitable for high-quality trace element premix feed |
| CN115784296B (en) * | 2022-11-25 | 2024-02-27 | 广西埃索凯循环科技有限公司 | Preparation method of high-chlorine zinc sulfate suitable for high-quality trace element premix feed |
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