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AT218475B - Process for the production of non-dusting sodium perborate containing water of crystallization with reduced bulk density - Google Patents

Process for the production of non-dusting sodium perborate containing water of crystallization with reduced bulk density

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Publication number
AT218475B
AT218475B AT75061A AT75061A AT218475B AT 218475 B AT218475 B AT 218475B AT 75061 A AT75061 A AT 75061A AT 75061 A AT75061 A AT 75061A AT 218475 B AT218475 B AT 218475B
Authority
AT
Austria
Prior art keywords
bulk density
crystallization
production
dusting
sodium perborate
Prior art date
Application number
AT75061A
Other languages
German (de)
Inventor
Ulrich Dr Hauschild
Ludwig Dr Pellens
Original Assignee
Kali Chemie Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kali Chemie Ag filed Critical Kali Chemie Ag
Application granted granted Critical
Publication of AT218475B publication Critical patent/AT218475B/en

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Description

       

   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung von nicht stäubendem kristallwasserhaltigem Natriumperborat mit verringertem Schüttgewicht 
 EMI1.1 
 

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 undborat nach dem Abkühlen mit wenig Wasser. Anschliessend werden mittels eines Kalanders die grösseren Konglomerate auf 1 mm zerkleinert. Das auf diese Weise erhaltene Produkt ist staubfrei und besitzt ein Schüttgewicht von 490 g/l. 



   Beispiel 2 : In einem verschliessbaren Mischer werden 250g handelsübliches Natriumperborat mit einem Schüttgewicht von 730   g/l   unter stetem Rühren bis auf   54 0 C   erhitzt und so lange bei dieser Temperatur belassen, bis das Produkt ein feuchtes und krümeliges Aussehen erhält. Dann wird weiter wie im Beispiel 1 verfahren, nur dass das Wasser während des Abkühlens aufgesprüht wird. Das Endprodukt besitzt ein Schüttgewicht von 500 g/l. 



    PATENTANSPRÜCHE :   
1. Verfahren zur Herstellung von nicht stäubendem kristallwasserhaltigem Natriumperborat mit verringertem Schüttgewicht und von unregelmässiger, perl- oder graupelähnlicher Form aus dem ebenfalls kristallwasserhaltigen, verhältnismässig feinkörnigen und einen störenden Staubgehalt aufweisenden Natriumperborat, wie es bei normaler Herstellung anfällt, dadurch gekennzeichnet, dass das Ausgangsmaterial unter Atmosphärendruck bei einer Temperatur zwischen 45 und 60   C, vorzugsweise zwischen 48 und 56   C, solange gerührt wird, bis es ein feuchtes und krümeliges Aussehen erhält, wonach man abkühlen lässt und nötigenfalls die grösseren Konglomerate zerkleinert.



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  Process for the production of non-dusting sodium perborate containing water of crystallization with reduced bulk density
 EMI1.1
 

 <Desc / Clms Page number 2>

 and borate after cooling with a little water. The larger conglomerates are then crushed to 1 mm using a calender. The product obtained in this way is dust-free and has a bulk density of 490 g / l.



   Example 2: 250 g of commercial sodium perborate with a bulk density of 730 g / l are heated to 54 ° C. with constant stirring in a closable mixer and left at this temperature until the product has a moist and crumbly appearance. Then the procedure is as in Example 1, except that the water is sprayed on while cooling. The end product has a bulk density of 500 g / l.



    PATENT CLAIMS:
1. A process for the production of non-dusting sodium perborate containing water of crystallization with a reduced bulk density and of irregular, pearl or gray flake-like shape from the relatively fine-grained sodium perborate, which also contains water of crystallization and has a disruptive dust content, as it occurs in normal production, characterized in that the starting material is below Atmospheric pressure at a temperature between 45 and 60 ° C., preferably between 48 and 56 ° C., is stirred until it has a moist and crumbly appearance, after which it is allowed to cool and, if necessary, the larger conglomerates are crushed.


    

Claims (1)

2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Abkühlung durch einen Luftstrom erfolgt. 2. The method according to claim 1, characterized in that the cooling takes place by an air stream. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das erstarrte Perborat mit Wasser oder einer wässerigen Stabilisatorlösung oder -suspension bedüst und anschliessend zerkleinert wird. 3. The method according to claim 1 or 2, characterized in that the solidified perborate is sprayed with water or an aqueous stabilizer solution or suspension and then comminuted.
AT75061A 1958-10-03 1959-05-04 Process for the production of non-dusting sodium perborate containing water of crystallization with reduced bulk density AT218475B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE218475T 1958-10-03

Publications (1)

Publication Number Publication Date
AT218475B true AT218475B (en) 1961-12-11

Family

ID=29592822

Family Applications (1)

Application Number Title Priority Date Filing Date
AT75061A AT218475B (en) 1958-10-03 1959-05-04 Process for the production of non-dusting sodium perborate containing water of crystallization with reduced bulk density

Country Status (1)

Country Link
AT (1) AT218475B (en)

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