DE492243C - Separation of alkaline earth phosphates from primary alkali phosphate liquors - Google Patents
Separation of alkaline earth phosphates from primary alkali phosphate liquorsInfo
- Publication number
- DE492243C DE492243C DEB126055D DEB0126055D DE492243C DE 492243 C DE492243 C DE 492243C DE B126055 D DEB126055 D DE B126055D DE B0126055 D DEB0126055 D DE B0126055D DE 492243 C DE492243 C DE 492243C
- Authority
- DE
- Germany
- Prior art keywords
- alkaline earth
- separation
- phosphates
- liquors
- earth phosphates
- 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
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B3/00—Fertilisers based essentially on di-calcium phosphate
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
Description
Abscheidung von Erdalkali-Phosphaten aus primären Alkaliphosphatlaugen In den beim Aufschließen von Rohphosphaten mit Schwefelsäure und darauffolgendlem Neutralisieren mit Soda o. d@gl. in bekannter Weise entstehenden @I-onopliospliatlaugen ist die Gegenwart von primären I?rdalkaliphosphaten, besonders von Calchirn- inid Magnesiumphosphaten, sehr lästig, wenn es sich um -- die Herstellung reiner primärer Alkaliphosphate handelt.Separation of alkaline earth phosphates from primary alkali phosphate liquors In the decomposition of rock phosphates with sulfuric acid and the following Neutralize with soda or d @ gl. @ I-onopliospliatlaugen formed in a known manner is the presence of primary alkaline earth phosphates, especially calchirninide Magnesium phosphates, very troublesome when it comes to - the manufacture of pure primary Alkali phosphate acts.
Es hat sich nun gezeigt, .daß es selbst bei hochkonzentriertenMonoalkaliphosphatlau;gen, wie Mononatrium-, Monokalium- und '-1lonoammoniumphosphatlaugen, gelingt, die primären Erdalkaliphosphate in sekundäre Erdalkaliphosphate überzuführen, indem man die Laugen mit berechneten Mengen von Dialkaliphosphaten oder zweckmäßig mit einem kleinen Überschuß an solchen versetzt und dann im Autoklav en unter hohem Druck, z. B. hei 5 bis 15 Atm., erhitzt.It has now been shown that even with highly concentrated monoalkali phosphate liquors, such as monosodium, monopotassium and lonoammonium phosphate liquors, it is possible to convert the primary alkaline earth phosphates into secondary alkaline earth phosphates by adding the alkaline solutions with calculated amounts of dialkali phosphates or, expediently, with a small amount Excess of such added and then in the autoclave s under high pressure, z. B. hei 5 and 1 5 atm., Heated.
So wurden beispielsweise aus einer 1%Iononatriumphosphatlau:ge, die 470 9 PA, 9 g Ca0 und 32 .g 1@hgO im Liter enthielt, nach Versetzen mit einer ausreichenden Menge Dinatriumphosphat und sechsstündigem Erhitzen bei 8 Atm. sämtliche-- primäres Calciumphosphat und etwa 9o °/o des primären M.agnesiumphosphats als sekundäre Phosphate abgeschieden.For example, a 1% ionosodium phosphate solution containing 470 9 PA, 9 g Ca0 and 32 g 1 @ hgO per liter, after adding a sufficient amount of disodium phosphate and heating at 8 atm for six hours. all - primary calcium phosphate and about 90% of the primary magnesium phosphate deposited as secondary phosphates.
Durch dieses Verfahren wird es ermöglicht, primäre All:aliphosphatlaugen - herzustellen, die völlig froi von Caloitimphosphaten sind und nur noch 0,4 bis o,7 Teile Mg.0 auf roo Teile P.O; enthalten.This process enables primary all: aliphosphate liquors - to produce, which are completely free of caloitime phosphates and only 0.4 to 0.7 parts of Mg.0 to roo parts of P.O .; contain.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB126055D DE492243C (en) | 1926-06-22 | 1926-06-22 | Separation of alkaline earth phosphates from primary alkali phosphate liquors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB126055D DE492243C (en) | 1926-06-22 | 1926-06-22 | Separation of alkaline earth phosphates from primary alkali phosphate liquors |
Publications (1)
Publication Number | Publication Date |
---|---|
DE492243C true DE492243C (en) | 1930-02-18 |
Family
ID=6996601
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB126055D Expired DE492243C (en) | 1926-06-22 | 1926-06-22 | Separation of alkaline earth phosphates from primary alkali phosphate liquors |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE492243C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1106739B (en) * | 1958-12-27 | 1961-05-18 | Dr Hans Huber | Process for the purification of crude phosphoric acid produced by the wet process |
US3403972A (en) * | 1965-01-29 | 1968-10-01 | Knapsack Ag | Process and apparatus for a salt mixture formed of sodium, magnesium and optionally calcium orthophosphates |
-
1926
- 1926-06-22 DE DEB126055D patent/DE492243C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1106739B (en) * | 1958-12-27 | 1961-05-18 | Dr Hans Huber | Process for the purification of crude phosphoric acid produced by the wet process |
US3403972A (en) * | 1965-01-29 | 1968-10-01 | Knapsack Ag | Process and apparatus for a salt mixture formed of sodium, magnesium and optionally calcium orthophosphates |
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