GB181678A - Methods for the treatment of alum with ammonia in order to obtain sulphates of potassium and ammonium and free alumina - Google Patents
Methods for the treatment of alum with ammonia in order to obtain sulphates of potassium and ammonium and free aluminaInfo
- Publication number
- GB181678A GB181678A GB4437/22A GB443722A GB181678A GB 181678 A GB181678 A GB 181678A GB 4437/22 A GB4437/22 A GB 4437/22A GB 443722 A GB443722 A GB 443722A GB 181678 A GB181678 A GB 181678A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alum
- solution
- ammonia
- potassium
- alumina
- 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
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
- C01D5/008—Preparation of potassium sulfate from alunite
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Gaseous ammonia is injected into an alum solution heated to a temperature near its boiling point or alternatively an aqeuous solution of ammonia may be introduced in the form of a spray. After the removal of the alumina thereby precipitated by filtration, the potassium and ammonium sulphates are separated by crystallization, and the mother liquor employed to dissolve more alum. When the alum is obtained by hot lixiviation of crude material such as that obtained by treating leucite with sulphuric acid the precipitation may be effected advantageously directly while the solution is still hot.ALSO:A solution of alum is treated with ammonia under such conditions that the alumina is precipitated in a readily filterable form. The alum solution is precipitated at a temperature near its point of ebullition, the ammonia is added gradually and the liquor is subjected to continuous agitation. An aqueous solution of ammonia may be introduced in the form of a spray into the alum solution, or preferably gaseous ammonia is injected, in order to utilize the heat of solution. After the removal of the alumina by filtration the potassium and ammonium sulphates are separated by crystallization, and the mother liquor employed in the treatment of more alum. When the alum is obtained by hot lixiviation of crude material such as that obtained by treating leucite with sulphuric acid, the precipitation may be effected advantageously directly while the solution is still hot.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT181678X | 1921-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB181678A true GB181678A (en) | 1923-03-22 |
Family
ID=11152293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4437/22A Expired GB181678A (en) | 1921-06-16 | 1922-02-15 | Methods for the treatment of alum with ammonia in order to obtain sulphates of potassium and ammonium and free alumina |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB181678A (en) |
-
1922
- 1922-02-15 GB GB4437/22A patent/GB181678A/en not_active Expired
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