GB411820A - Improvements in or relating to the production of potassium sulphate or mixed crystals of potassium sulphate and ammonium sulphate - Google Patents
Improvements in or relating to the production of potassium sulphate or mixed crystals of potassium sulphate and ammonium sulphateInfo
- Publication number
- GB411820A GB411820A GB3484832A GB3484832A GB411820A GB 411820 A GB411820 A GB 411820A GB 3484832 A GB3484832 A GB 3484832A GB 3484832 A GB3484832 A GB 3484832A GB 411820 A GB411820 A GB 411820A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphate
- stage
- potassium
- liquor
- ammonium 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
- 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
- C01D5/06—Preparation of sulfates by double decomposition
- C01D5/08—Preparation of sulfates by double decomposition with each other or with ammonium sulfate
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A multistage process for the production of potassium sulphate or mixed crystals of potassium sulphate and ammonium sulphate comprises reacting ammonium sulphate with an aqueous liquor containing potassium chloride to yield an intermediate solid complex of potassium sulphate and ammonium sulphate, separating the complex from the mother liquor and reaching it with or without more ammonium sulphate, with an aqueous liquor to give a second intermediate solid complex which is richer in potassium sulphate than the first complex. The total quantity of ammonium sulphate used is in substantial excess over the total potassium chloride employed in all stages. In a cyclic form of the process, the complex produced in each stage (r) from the first to penultimate is reacted in the following stage (r + 1) with the mother liquor produced in the corresponding next following stage (r + 2) of a previous cycle, or with potassium chloride and water in the case of the final stage, the total potassium chloride and/or water being preferably divided up into portions which are added at each stage. Each stage may be carried out at the same temperature or the temperature may be diminished in successive stages starting from the stage employing pure ammonium sulphate. The excess of ammonium sulphate may be recovered by working up the liquor from the first stage. The liquor may be evaporated to deposit ammonium sulphate or potassium ammonium sulphate at elevated temperature and finally cooled to separate ammonium chloride and p leave a liquor of the same composition as, but less in quantity than, the original liquor from the first stage. According to the examples, (1) a three stage process at 30 DEG C. produces potassium sulphate with a 90 per cent yield; (2) a four stage process at 30 DEG C. produces potassium sulphate with a 94 per cent yield; (3) a three-stage process at temperature of 90 DEG C., 80 DEG C. and 30 DEG C. in succeeding stages produces potassium sulphate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3484832A GB411820A (en) | 1932-12-08 | 1932-12-08 | Improvements in or relating to the production of potassium sulphate or mixed crystals of potassium sulphate and ammonium sulphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3484832A GB411820A (en) | 1932-12-08 | 1932-12-08 | Improvements in or relating to the production of potassium sulphate or mixed crystals of potassium sulphate and ammonium sulphate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB411820A true GB411820A (en) | 1934-06-08 |
Family
ID=10370642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3484832A Expired GB411820A (en) | 1932-12-08 | 1932-12-08 | Improvements in or relating to the production of potassium sulphate or mixed crystals of potassium sulphate and ammonium sulphate |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB411820A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2906603A (en) * | 1955-07-04 | 1959-09-29 | Soc Etu Chimiques Ind Et Agri | Process of manufacture of potassium sulphate |
| WO1999065823A1 (en) * | 1998-06-16 | 1999-12-23 | Airborne Industrial Minerals Inc. | Method of procucing potassium sulfate |
| WO2009013728A1 (en) * | 2007-07-25 | 2009-01-29 | F.P.C. Enterprise (2008) Ltd | Chemical process to produce hydrogen chloride and chloride-free compound potassium sulfate fertilizers or other metal sulfates |
| CN103397201A (en) * | 2013-07-26 | 2013-11-20 | 中国科学院青海盐湖研究所 | Method for statically leaching and extracting potassium from polyhalite and preparing potassium sulphate |
-
1932
- 1932-12-08 GB GB3484832A patent/GB411820A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2906603A (en) * | 1955-07-04 | 1959-09-29 | Soc Etu Chimiques Ind Et Agri | Process of manufacture of potassium sulphate |
| WO1999065823A1 (en) * | 1998-06-16 | 1999-12-23 | Airborne Industrial Minerals Inc. | Method of procucing potassium sulfate |
| US6315976B1 (en) | 1998-06-16 | 2001-11-13 | Aristos Capital Corporation | Method of producing potassium sulfate |
| WO2009013728A1 (en) * | 2007-07-25 | 2009-01-29 | F.P.C. Enterprise (2008) Ltd | Chemical process to produce hydrogen chloride and chloride-free compound potassium sulfate fertilizers or other metal sulfates |
| US7887776B2 (en) | 2007-07-25 | 2011-02-15 | Leonid Finkelshtein | Chemical process to produce hydrogen chloride and chloride-free compound potassium sulfate fertilizers or other metal sulfates |
| CN103397201A (en) * | 2013-07-26 | 2013-11-20 | 中国科学院青海盐湖研究所 | Method for statically leaching and extracting potassium from polyhalite and preparing potassium sulphate |
| CN103397201B (en) * | 2013-07-26 | 2014-12-17 | 中国科学院青海盐湖研究所 | Method for statically leaching and extracting potassium from polyhalite and preparing potassium sulphate |
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