GB648903A - Improved process for separating sodium chloride and potassium chloride - Google Patents
Improved process for separating sodium chloride and potassium chlorideInfo
- Publication number
- GB648903A GB648903A GB3146447A GB3146447A GB648903A GB 648903 A GB648903 A GB 648903A GB 3146447 A GB3146447 A GB 3146447A GB 3146447 A GB3146447 A GB 3146447A GB 648903 A GB648903 A GB 648903A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solution
- separated
- double salt
- calcium chloride
- chloride
- 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
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/04—Chlorides
Abstract
Sodium and potassium chlorides are separated by a process involving the formation of a double salt CaCl2.KCl formed in solution above 37.7 DEG C. (1) A solid admixture may be extracted with calcium chloride solution of suitable concentration, say at 95 DEG C., and the double salt produced by evaporation at above 37.7 DEG C. or by cooling to somewhat below the extraction temperature, or by adding solid calcium chloride. The double salt is separated and treated with calcium chloride solution or with non-saturated calcium-potassium chloride solution below 37.7 DEG C., e.g. 0-15 DEG C, to form the simple salts from which potassium chloride may be separated. Alternatively, the solid admixture may be treated above 37.7 DEG C. with calcium chloride solution of such high concentration that the double salt crystallizes immediately, and is separated from suspended solid sodium chloride by flotation &c. (2) Solutions of the two chlorides are treated with calcium chloride either solid or in solution, and when the greater part of the sodium chloride has precipitated, it is separated, and the solution is then evaporated to deposit the double salt, which is treated as before. If the solution from which the double salt is to be separated has a very high concentration of calcium chloride, some of this is removed by crystallization immediately below 37.7 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3146447A GB648903A (en) | 1947-11-27 | 1947-11-27 | Improved process for separating sodium chloride and potassium chloride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3146447A GB648903A (en) | 1947-11-27 | 1947-11-27 | Improved process for separating sodium chloride and potassium chloride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB648903A true GB648903A (en) | 1951-01-17 |
Family
ID=10323471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3146447A Expired GB648903A (en) | 1947-11-27 | 1947-11-27 | Improved process for separating sodium chloride and potassium chloride |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB648903A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0767140A1 (en) * | 1995-10-06 | 1997-04-09 | Durferrit GmbH Thermotechnik | Process for the recovery of salt components from hardening salt baths |
| CN104998748A (en) * | 2015-06-19 | 2015-10-28 | 化工部长沙设计研究院 | Technology for extracting potassium and removing sodium from high-sodium polyhalite ore |
| CN111615414A (en) * | 2018-01-31 | 2020-09-01 | 米哈伊尔·亚历山德罗维奇·马金 | Reactor for separating sodium chloride and potassium chloride from a multimineral source and method thereof |
| CN113830793A (en) * | 2021-11-04 | 2021-12-24 | 河北工业大学 | Method for recovering sodium salt and potassium salt in wastewater |
| CN114044528A (en) * | 2021-12-22 | 2022-02-15 | 湘潭大学 | Method for recovering potassium chloride from ferrous metallurgy sintering ash through solvent crystallization separation |
-
1947
- 1947-11-27 GB GB3146447A patent/GB648903A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0767140A1 (en) * | 1995-10-06 | 1997-04-09 | Durferrit GmbH Thermotechnik | Process for the recovery of salt components from hardening salt baths |
| US5769906A (en) * | 1995-10-06 | 1998-06-23 | Durferrit Gmbh Thermotechnik | Process for recovering the salt constituents from hardening-shop salt baths |
| CN104998748A (en) * | 2015-06-19 | 2015-10-28 | 化工部长沙设计研究院 | Technology for extracting potassium and removing sodium from high-sodium polyhalite ore |
| CN111615414A (en) * | 2018-01-31 | 2020-09-01 | 米哈伊尔·亚历山德罗维奇·马金 | Reactor for separating sodium chloride and potassium chloride from a multimineral source and method thereof |
| CN111615414B (en) * | 2018-01-31 | 2022-05-13 | Gsm化学制品有限公司 | Reactor for separating sodium chloride and potassium chloride from a multi-mineral source and method thereof |
| CN113830793A (en) * | 2021-11-04 | 2021-12-24 | 河北工业大学 | Method for recovering sodium salt and potassium salt in wastewater |
| CN114044528A (en) * | 2021-12-22 | 2022-02-15 | 湘潭大学 | Method for recovering potassium chloride from ferrous metallurgy sintering ash through solvent crystallization separation |
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