DE355868C - Process for the production of practically iron-free chrome alum - Google Patents
Process for the production of practically iron-free chrome alumInfo
- Publication number
- DE355868C DE355868C DEH82966D DEH0082966D DE355868C DE 355868 C DE355868 C DE 355868C DE H82966 D DEH82966 D DE H82966D DE H0082966 D DEH0082966 D DE H0082966D DE 355868 C DE355868 C DE 355868C
- Authority
- DE
- Germany
- Prior art keywords
- production
- chrome alum
- free chrome
- practically
- iron
- 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
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G37/00—Compounds of chromium
- C01G37/08—Chromium sulfates
- C01G37/10—Chrome alum
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Iron (AREA)
Description
Verfahren zur Herstellung von praktisch eisenfreiem Chromalaun. Die Erfindung betrifft eine Ausführungsweise des Verfahrens gemäß dem Hauptpatent. Anstatt Kaliumstilfat bzw, ein lösliches Kalisalz zu dem in Schwefelsäure gelösten Ferrochrom zuzusetzen, wird vorzugsweise ein lösliches Amnioniumsalz zugesetzt, wodurch ebenfalls kristallisierter Chromalatin erhalten wird. Die Anwendung des Animoniumsalzes hat unter Umständen gew'isse Vorteile gegenüber dein mit Kalisalz (Kaliumsulfat) ausgeführten Verfahren.Process for the production of practically iron-free chrome alum. the The invention relates to an embodiment of the method according to the main patent. Instead of Potassium stilfate or a soluble potassium salt to the ferrochrome dissolved in sulfuric acid add, a soluble ammonium salt is preferably added, thereby also crystallized chromalatin is obtained. The application of the ammonium salt has possibly certain advantages over the one performed with potassium salt (potassium sulfate) Procedure.
Im Rahmen der vorliegenden Erfindung liegt auch die Abänderung, daß man an Stelle (les Kalisalzes ein entsprechendes Natriumsalz anwendet; nur erhält man in diesem Falle den Chromalaun nicht in kristallisierter Form. Wenn der Chromalaun nicht transportiert werden muß, kann man auch Natritimchromalaun in Lösung herstellen.Within the scope of the present invention, there is also the modification that instead of (the potassium salt, a corresponding sodium salt is used; only obtained In this case, the chrome alum is not in crystallized form. If the chrome alum does not have to be transported, you can also make sodium chromium alum in solution.
Das geeignetste Fällungsmittel für den Zweck der Chromalaungewinnung aus in Schwefelsäure gelöstem Ferrochrom ist neben Kalitimsulfat -- Ammonitimstilfat.The most suitable precipitant for the purpose of extracting chromium alum from ferrochromium dissolved in sulfuric acid is, in addition to potassium sulfate , ammonitimstilfate.
Es hat sich sogar erwiesen, daß Amnioniumstilfat bestimmte Vorteile vor Kaliumsulfat darbietet, Die Ausscheidung von Chromalaun geht bedeutend schneller. Man bekommt dadurch eine bedeutend bessere wirtschaftliche Ausnutzun- der Anlag . Es hat sich ferner erwiesen, daß die Einwirkungs-7eit in den Kristallisationsbottichen auf die Hälfte vermindert werden kann, wenn man Ammoniumstilfat an Stelle des Kaliumsulfats verwendet.Amnionium stilfate has even been shown to have certain advantages over potassium sulfate. The excretion of chrome alum is significantly faster. You get a significantly better economic utilization of the plant . It has also been found that the exposure time in the crystallization vats can be reduced by half if ammonium stilfate is used instead of potassium sulfate.
Anstatt Sulfate kann man selbstverständlich auch Chloride (oder Karbonate) und Schwefelsäure benutzen, also Kalitimehlorid (-karbonat) mit der entsprechenden -Menge _Schwefelsäure oder Ammonitimchlorid (-karbonat) mit der entsprechenden Menge Schwefelsäure.Instead of sulfates, you can of course also use chlorides (or carbonates) and sulfuric acid, i.e. potassium chloride (carbonate) with the appropriate -Quantity _Sulfuric acid or ammonite chloride (carbonate) with the corresponding amount Sulfuric acid.
Das oben Angeführte gilt auch für -Natriumsalze, die anwendbar sind, wenn man Chromalaun in Lösung herstellen will, weil N atriumchromalaun bekanntlich nicht kristallisiert.The person mentioned above also applies to -Natriumsalze applicable if one wants to produce alum in solution because N atriumchromalaun known not crystallize.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE355868X | 1920-03-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE355868C true DE355868C (en) | 1922-07-07 |
Family
ID=20308782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEH82966D Expired DE355868C (en) | 1920-03-01 | 1920-11-06 | Process for the production of practically iron-free chrome alum |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE355868C (en) |
-
1920
- 1920-11-06 DE DEH82966D patent/DE355868C/en not_active Expired
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