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US 5,203,877 AGranted
Process for producing sodium perborate monohydrate agglomerate
AssigneePeroxid-Chemie GmbH
InventorsWerner Doetsch, Richard Roesler, Hans-Ludwig Pfeifer
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Abstract
A process for producing sodium perborate monohydrate agglomerates or granules in which primary particles of sodium perborate monohydrate produced from sodium perborate tetrahydrate by a dehydration process are subjected to compacting pressing agglomeration, and the resulting agglomerates are subsequently comminuted to granules.
Claims7
A process for producing sodium perborate monohydrate granules comprising the steps of:
- compacting primary particles prepared by dehydration of sodium perborate tetrahydrate by dry pressing-agglomeration at a temperature in the range from 20.degree. to 50.degree. C. and at a pressure of at least 0.2 tons per cm of roller length without addition of agglomeration agents using an at least lightly textured roller press to form compressed strips, and
- comminuting the resulting compressed strips of sodium perborate monohydrate to a granular material having a desired average grain diameter within the range from 0.3 to 3 mm.
Dependencies are inferred from the claim text.