AT91707B - Process for the production of hydrofluoric acid from natural fluorides, especially fluorspar and sulfuric acid, in uninterrupted operations. - Google Patents
Process for the production of hydrofluoric acid from natural fluorides, especially fluorspar and sulfuric acid, in uninterrupted operations.Info
- Publication number
- AT91707B AT91707B AT91707DA AT91707B AT 91707 B AT91707 B AT 91707B AT 91707D A AT91707D A AT 91707DA AT 91707 B AT91707 B AT 91707B
- Authority
- AT
- Austria
- Prior art keywords
- sulfuric acid
- fluorspar
- fluorides
- natural
- production
- Prior art date
Links
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Description
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Verfahren zur Herstellung von Flusssäure aus natürlichen Fluoriden, insbesondere
Flussspat und Schwefelsäure in ununterbrochenem Betriebe.
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die Möglichkeit besteht, die während dieser Arbeit noch entweichenden Fluorwasseistofidämpfe durch Absaugen in sehr einfacher Weise unschädlich zu machen und so einen hygienisch einwandfreien Betrieb zu gewährleisten.
Anstatt die Schwefelsäure durch wasserfreien Gyps od. dgl. aufsaugen zu lassen und erst dann dem zu zersetzenden Fluorid (Flussspat) beizumischen, kann man mit Vorteil das letztere in die entsprechende Menge Schwefelsäure hineinrrihren und diese Mischung von wasserfreiem Kalziumsulfat od. dgl. aufsaugen lassen. Zweckmässig lässt man diesen Vorgang in der mit Rührwerk versehenen Muffe ! selbst vor sich gehen und führt alsdann unter Rühren die Kalzinierung durch.
PATENT-ANSPRÜCHE :
1. Verfahren zur Herstellung von Flusssäure aus natürlichen Fluoriden, insbesondere Flussspat, und Schwefelsäure in ununterbrochenem Betriebe, dadurch gekennzeichnet, dass man die Schwefelsäure zweckmässig in Form von Schwefelsäuremonohydrat von solchen Mengen wasserfreien Kalziumsulfats oder anderer geeigneter fester Stoffe aufsaugen lässt, dass eine trockene, pulverförmige Masse entsteht und die Zersetzung des Fluorids durch die Schwefelsäure in einem geeigneten Ofen unter mechanischer Rührung der Reaktionsmischung vor sich gehen lässt.
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Process for the production of hydrofluoric acid from natural fluorides, in particular
Fluorspar and sulfuric acid in continuous operations.
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there is the possibility of making the hydrofluoric acid vapor which still escapes during this work harmless by suction in a very simple manner and thus to ensure hygienically perfect operation.
Instead of letting the sulfuric acid soak up with anhydrous gypsum or the like and only then mix it with the fluoride (fluorspar) to be decomposed, it is advantageous to stir the latter into the appropriate amount of sulfuric acid and allow this mixture of anhydrous calcium sulfate or the like to be soaked up. It is advisable to leave this process in the socket provided with a stirrer! go by itself and then carry out the calcination with stirring.
PATENT CLAIMS:
1. A process for the production of hydrofluoric acid from natural fluorides, in particular fluorspar, and sulfuric acid in uninterrupted operations, characterized in that the sulfuric acid in the form of sulfuric acid monohydrate can be absorbed by such amounts of anhydrous calcium sulfate or other suitable solid substances that a dry, powdery Mass is formed and the decomposition of the fluoride by the sulfuric acid is allowed to proceed in a suitable oven with mechanical stirring of the reaction mixture.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE91707X | 1918-12-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT91707B true AT91707B (en) | 1923-03-10 |
Family
ID=5643818
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT91707D AT91707B (en) | 1918-12-27 | 1920-06-30 | Process for the production of hydrofluoric acid from natural fluorides, especially fluorspar and sulfuric acid, in uninterrupted operations. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT91707B (en) |
-
1920
- 1920-06-30 AT AT91707D patent/AT91707B/en active
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