GB975860A - Method of obtaining products from alunite - Google Patents
Method of obtaining products from aluniteInfo
- Publication number
- GB975860A GB975860A GB85763A GB85763A GB975860A GB 975860 A GB975860 A GB 975860A GB 85763 A GB85763 A GB 85763A GB 85763 A GB85763 A GB 85763A GB 975860 A GB975860 A GB 975860A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mgso4
- reaction
- k2so4
- produced
- treatment
- 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
- C01F7/34—Preparation of aluminium hydroxide by precipitation from solutions containing aluminium salts
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/24—Sulfates of ammonium
-
- 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)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Alunite, 3Al2O3.K2O.4SO3.6H2O is heated to 500-600 DEG C. until dehydration just ceases and treated with either Mg(OH)2 or NH4OH to form K2SO4 and either MgSO4 or (NH4)2SO4. The Mg(OH)2 may be formed in situ by the reaction of calcined magnesite with water. Aluminium hydroxide may be separated from the solution containing K2SO4, MgSO4 or (NH4)2SO4 which results from the treatment, in admixture with gangue, which may be removed by washing and drying, and the Al(OH)3 may be concentrated by using a gravity separation technique. Sodium aluminate may be produced from the aluminium hydroxide by reaction with NaOH solution. MgCl2 may be obtained from the solution containing reaction products, K2SO4 and MgSO4 by treatment with KCl. MgCO3 and (NH4)2SO4 may be produced from the MgSO4 obtained in the initial reaction by treatment with ammonia and carbon dioxide. MgSO4 and NH4OH may be obtained from (NH4)2SO4 produced in the initial reaction by heating the latter with Mg(OH)2. Salts may be separated from each other using fractional crystallization techniques.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB85763A GB975860A (en) | 1963-01-08 | 1963-01-08 | Method of obtaining products from alunite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB85763A GB975860A (en) | 1963-01-08 | 1963-01-08 | Method of obtaining products from alunite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB975860A true GB975860A (en) | 1964-11-18 |
Family
ID=9711706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB85763A Expired GB975860A (en) | 1963-01-08 | 1963-01-08 | Method of obtaining products from alunite |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB975860A (en) |
-
1963
- 1963-01-08 GB GB85763A patent/GB975860A/en not_active Expired
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