GB437652A - Improvements in or relating to the production of potassium sulphate - Google Patents
Improvements in or relating to the production of potassium sulphateInfo
- Publication number
- GB437652A GB437652A GB1330434A GB1330434A GB437652A GB 437652 A GB437652 A GB 437652A GB 1330434 A GB1330434 A GB 1330434A GB 1330434 A GB1330434 A GB 1330434A GB 437652 A GB437652 A GB 437652A
- Authority
- GB
- United Kingdom
- Prior art keywords
- double salt
- calcium
- sulphate
- reaction
- potassium
- 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
- C01D5/06—Preparation of sulfates by double decomposition
- C01D5/10—Preparation of sulfates by double decomposition with sulfates of magnesium, calcium, strontium, or barium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Potassium sulphate and/or the double salt K2SO4.CaSO4.H2O are obtained by the reaction of excess of the necessary potassium chloride with calcium sulphate in ammoniacal aqueous medium. The calcium sulphate and/or the ammonia may be added to the reaction mixture in stages with or without the intermediate separation of the solid product of the preceding stage. If the reaction is conducted so as to produce the double salt, this may be separated and treated by extraction with hot or cold water &c. to yield gypsum, anhydrite and/or the penta-calcium double salt K2SO4.CaSO4.H2O and a solution of potassium sulphate. A two stage counter-current extraction may be used. The resulting penta-calcium double salt, anhydrite and gypsum may be used in the process together with fresh calcium sulphate, the anhydrite and/or penta-calcium double salt being preferably added in the preliminary stages of the reaction. The process may be conducted at about ordinary temperature. The potassium sulphate may be precipitated from its aqueous solution by means of ammonia. The ammoniacal mother liquor may be used for conducting the main reaction or the ammonia may be removed and the resulting liquor used for the extraction of further quantities of the double salt K2SO4.CaSO4.H2O. Alternatively, the potassium sulphate may be recovered by evaporation or by crystallization, the mother liquor being employed for extracting fresh quantities of the double salt. The potassium chloride employed may contain sodium chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1330434A GB437652A (en) | 1934-05-02 | 1934-05-02 | Improvements in or relating to the production of potassium sulphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1330434A GB437652A (en) | 1934-05-02 | 1934-05-02 | Improvements in or relating to the production of potassium sulphate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB437652A true GB437652A (en) | 1935-11-04 |
Family
ID=10020515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1330434A Expired GB437652A (en) | 1934-05-02 | 1934-05-02 | Improvements in or relating to the production of potassium sulphate |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB437652A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2804371A (en) * | 1955-04-26 | 1957-08-27 | Int Minerals & Chem Corp | Recovery of potash values from brines |
| US2882128A (en) * | 1954-09-16 | 1959-04-14 | Chimiques Pour L Andustrie Et | Preparation of potassium sulphate from calcium sulphate and potassium chloride |
| US4504458A (en) * | 1982-09-02 | 1985-03-12 | Superfos A/S | Gypsum conversion |
| WO2006105875A2 (en) * | 2005-04-08 | 2006-10-12 | Phoenix Beteiligungs Gmbh | Method and device for producing nitrogen fertilizer, removing phosphate from organic waste products, and limiting the potassium concentration |
| CN113149037A (en) * | 2021-05-25 | 2021-07-23 | 天津渤化永利化工股份有限公司 | Method for preparing potassium sulfate by utilizing desulfurized gypsum |
-
1934
- 1934-05-02 GB GB1330434A patent/GB437652A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2882128A (en) * | 1954-09-16 | 1959-04-14 | Chimiques Pour L Andustrie Et | Preparation of potassium sulphate from calcium sulphate and potassium chloride |
| US2804371A (en) * | 1955-04-26 | 1957-08-27 | Int Minerals & Chem Corp | Recovery of potash values from brines |
| US4504458A (en) * | 1982-09-02 | 1985-03-12 | Superfos A/S | Gypsum conversion |
| WO2006105875A2 (en) * | 2005-04-08 | 2006-10-12 | Phoenix Beteiligungs Gmbh | Method and device for producing nitrogen fertilizer, removing phosphate from organic waste products, and limiting the potassium concentration |
| WO2006105875A3 (en) * | 2005-04-08 | 2007-02-01 | Nachhaltige Stoffnutzung Mbh G | Method and device for producing nitrogen fertilizer, removing phosphate from organic waste products, and limiting the potassium concentration |
| US8241389B2 (en) | 2005-04-08 | 2012-08-14 | Phoenix Beteilgungs GmbH | Method and device for producing nitrogen fertilizer, removing phosphate from organic waste products, and limiting the potassium concentration |
| CN113149037A (en) * | 2021-05-25 | 2021-07-23 | 天津渤化永利化工股份有限公司 | Method for preparing potassium sulfate by utilizing desulfurized gypsum |
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