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 densityInfo
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 7
- 238000000034 method Methods 0.000 title claims description 6
- 229960001922 sodium perborate Drugs 0.000 title description 5
- YKLJGMBLPUQQOI-UHFFFAOYSA-M sodium;oxidooxy(oxo)borane Chemical compound [Na+].[O-]OB=O YKLJGMBLPUQQOI-UHFFFAOYSA-M 0.000 title description 5
- 238000002425 crystallisation Methods 0.000 title description 4
- 230000008025 crystallization Effects 0.000 title description 4
- 238000004519 manufacturing process Methods 0.000 title description 4
- 238000010410 dusting Methods 0.000 title description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims 1
- 239000000725 suspension Substances 0.000 claims 1
- 239000000047 product Substances 0.000 description 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Glanulating (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Herstellung von nicht stäubendem kristallwasserhaltigem Natriumperborat mit verringertem Schüttgewicht
EMI1.1
<Desc/Clms Page number 2>
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.
<Desc / Clms Page number 1>
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)
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) |
-
1959
- 1959-05-04 AT AT75061A patent/AT218475B/en active
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