GB569008A - Improvements in or relating to process for obtaining alumins, sulphuric acid and potassium sulphate - Google Patents
Improvements in or relating to process for obtaining alumins, sulphuric acid and potassium sulphateInfo
- Publication number
- GB569008A GB569008A GB16869/42A GB1686942A GB569008A GB 569008 A GB569008 A GB 569008A GB 16869/42 A GB16869/42 A GB 16869/42A GB 1686942 A GB1686942 A GB 1686942A GB 569008 A GB569008 A GB 569008A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alumina
- aluminium
- sulphuric acid
- sulphate
- potassium sulphate
- 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
- C01F7/30—Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis or oxidation of aluminium compounds
- C01F7/32—Thermal decomposition of sulfates including complex sulfates, e.g. alums
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/74—Preparation
- C01B17/745—Preparation from sulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
569,008. Alumina; aluminium and potassium sulphates; sulphur dioxide INSTITUTO NACIONAL DE INDUSTRIA. Nov. 27, 1942, No. 16869. Convention date, Nov. 27, 1941. [Classes 1 (ii) and 1 (iii)] A process for the manufacture of alumina, potassium sulphate, and sulphuric acid from alunite ores comprises the following steps : (1) triturating and grinding the ore ; (2) calcining in a muffle furnace with a non-siliceous lining at 750-1250‹ C. to decompose the aluminium sulphate and obtain sulphur dioxide and trioxide ; (3) converting these gases into sulphuric acid (4) extracting potassium sulphate from the calcination residue by washing with hot water, and crystallizing ; (5) treating the insoluble residue of alumina and impurities such as silica and iron with the acid obtained in (3) to give aluminium sulphate which is separated by filtration, evaporated and calcined to yield non-siliceous alumina, and sulphurous gases which are returned to the process. The alumina is purified by the Bayer process and used for the electrolytic production of aluminium.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES231251X | 1941-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB569008A true GB569008A (en) | 1945-05-01 |
Family
ID=8244770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16869/42A Expired GB569008A (en) | 1941-11-27 | 1942-11-27 | Improvements in or relating to process for obtaining alumins, sulphuric acid and potassium sulphate |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE447978A (en) |
| CH (1) | CH231251A (en) |
| FR (1) | FR887970A (en) |
| GB (1) | GB569008A (en) |
-
0
- BE BE447978D patent/BE447978A/xx unknown
-
1942
- 1942-11-17 FR FR887970D patent/FR887970A/en not_active Expired
- 1942-11-21 CH CH231251D patent/CH231251A/en unknown
- 1942-11-27 GB GB16869/42A patent/GB569008A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH231251A (en) | 1944-03-15 |
| FR887970A (en) | 1943-11-29 |
| BE447978A (en) |
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