DE868744C - Process for purifying potassium sulfate by flotation - Google Patents
Process for purifying potassium sulfate by flotationInfo
- Publication number
- DE868744C DE868744C DEK12557A DEK0012557A DE868744C DE 868744 C DE868744 C DE 868744C DE K12557 A DEK12557 A DE K12557A DE K0012557 A DEK0012557 A DE K0012557A DE 868744 C DE868744 C DE 868744C
- Authority
- DE
- Germany
- Prior art keywords
- potassium sulfate
- flotation
- solution
- saturated
- purifying
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/012—Organic compounds containing sulfur
-
- 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
- C01D5/16—Purification
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/04—Frothers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
- B03D2203/10—Potassium ores
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)
Description
Verfahren zur Reinigung von Kaliumsulfat durch Schwimmaufbereitung Kaliumsulfat wird in der Praxis so hergestellt, daß entweder Kaliumchlorid in einer konzentrierten Bittersalzlösung über Schönit in K,SO4 oder aber getrockneter Kieserit in einer konzentrierten Kaliumchloridlösung zu demselben Salz umgesetzt wird. Bei dem letzteren Verfahren befindet sich der gesamte im Kieserit enthaltene Anhydrit entweder als solcher oder aber meistens als ein Calciumdoppelsulfat, wie z. B. Syngenit (Ca S 04 - K2 S 04 - H20), als unerwünschter Bestandteil im Endprodukt.Process for purifying potassium sulfate by swimming pool treatment Potassium sulphate is produced in practice so that either potassium chloride in one concentrated Epsom salt solution over Schönite in K, SO4 or dried Kieserite is converted to the same salt in a concentrated potassium chloride solution. at The latter process contains all of the anhydrite contained in the kieserite either as such or mostly as a calcium double sulfate, such as. B. Syngenite (Ca S 04 - K2 S 04 - H20), as an undesirable component in the end product.
Eine Reinigung dieses technischen Kaliumsulfates zwecks Herstellung eines hochprozentigen, Ca 0-armen Sulfates ist nach dem heutigen Stand der Technik nur so durchzuführen, daß das Rohsulfat in der Wärme in Wasser umkristallisiert wird. Da der Löslichkeitstemperaturkoeffizient des K, S 04 sehr klein ist, sind die'Wärmekosten des Verfahrens hoch, infolgedessen ist seine Wirtschaftlichkeit gering. ° Bedeutend günstiger liegen die Verhältnisse bei der Schwimmaufbereitung des technischen Kaliumsulfates. Es gelang, in den Alkylsulfaten (schwefelsaure Ester der Alkylalkohole mit einer Kettenlänge von 7 bis 14 C-Atomen) Sammlerschäumer zu finden, die für diese Trennung hervorragend geeignet sind.A purification of this technical potassium sulfate for the purpose of production a high-percentage, low-Ca 0 sulfate is state-of-the-art only to be carried out in such a way that the crude sulfate recrystallizes in water when heated will. Since the solubility temperature coefficient of K, S 04 is very small, are the heating costs of the process are high, as a result of which it is economical small amount. ° The conditions for swimming pool preparation are significantly more favorable of technical potassium sulfate. It succeeded in the alkyl sulfates (sulfuric acid ester of alkyl alcohols with a chain length of 7 to 14 carbon atoms) collector foams find that are ideally suited for this separation.
Es stellte sich ferner überraschenderweise heraus, daß sich sowohl der Trenneffekt als auch das Ausbringen bedeutend vergrößern, wenn als Schwimmlauge nicht die Mutterlauge des Kaliumsulfates (also gesättigte K2 S 04 Lösung), sondern eine Kaliumchloridlösung, die außerdem an K2 S 04 gesättigt ist, verwendet wird. Der KCl-Gehalt der Lösung kann in weiten Grenzen schwanken, es genügt bereits ein Gehalt von 2o g/1 K Cl, um die Flotationsergebnisse wesentlich zu verbessern; andererseits sind die Ergebnisse in einer gesättigten K Cl-Lösung ebenso gut. Diese konzentrierte Lösung kann nach der Flotation in der bisher üblichen. ..-Weise _ im Kaliumsülfatprozeß verwendet werden.It also turned out, surprisingly, that both the separation effect as well as the output increase significantly when used as floating lye not the mother liquor of the potassium sulphate (i.e. saturated K2 S 04 solution), but a potassium chloride solution, which is also saturated with K2 S 04, is used. The KCl content of the solution can fluctuate within wide limits, it is sufficient already a content of 20 g / 1 K Cl to improve the flotation results significantly; on the other hand, the results in a saturated K Cl solution are just as good. These concentrated solution can after flotation in the usual way. ..-Way _ be used in the potassium sulphate process.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK12557A DE868744C (en) | 1951-12-22 | 1951-12-22 | Process for purifying potassium sulfate by flotation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK12557A DE868744C (en) | 1951-12-22 | 1951-12-22 | Process for purifying potassium sulfate by flotation |
Publications (1)
Publication Number | Publication Date |
---|---|
DE868744C true DE868744C (en) | 1953-02-26 |
Family
ID=7213811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEK12557A Expired DE868744C (en) | 1951-12-22 | 1951-12-22 | Process for purifying potassium sulfate by flotation |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE868744C (en) |
-
1951
- 1951-12-22 DE DEK12557A patent/DE868744C/en not_active Expired
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