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Linxis Group

The DIOSNA glossary


Technological terms in an overview

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Batch Mode


Batch operation means the production of an exactly defined product quantity in one single product preparation. During the batch operation the condition of the whole product is evident at every moment of the process. The product quantity is defined via the size of the production machine. A different procedure is the continuous operation in which the material is produced in continuously running process steps. The process causes an insecurity regarding the traceability of the condition of one certain product sample as parameters, point in time and localization cannot exactly be determined. This production lot is quantified by the duration of the continuous process. The size of the plant defines the hourly output.

Batch Fluid Bed System


In a batch fluid bed plant a defined product quantity which depends on the size of the plant is produced by fluid bed processes.

Bottom Discharge


Bottom Discharge refers to fluid bed plants for example, if the air distributor plate is designed tilting which allows quick discharge downwards into a lower floor. This process is also called vertical product flow.

Bottom Driven High Shear Granulation


Mixer-granulators are either equipped with a mixing tool driven from the bottom or from the top. The bottom drive offers considerable advantages, as the drive shaft is not placed within the product and smaller bottom-/wall gaps are possible. The bowl is designed stationary, the lid can be opened at any time. The connection line to a dryer can be installed firmly (automatic CIP-cleaning). Usually this is not possible with top-drive-plants.

Bottom-Spray-Coating


For bottom-spray-coating the spraying nozzle is situated in the air distributor plate. Special air routing generates a defined product movement which guarantees homogeneous coating of the product. The bottom-spray-coating is either realised by a so-called Wurster system or without additional devices using a special air distributor plate.

Bottom-Spray-Granulation


In bottom-spray-granulation the spraying nozzle is situated in the air distributor plate and distributes the granulation liquid directly into the product. Bottom-spray-granulation allows more intensive wetting of the product which results in more compact granules. In comparison to the top-spray-granulation the droplet travelling time until contacting the product is shortened and the risk of beard formation is reduced, as the nozzle is kept free by the product rinsing around. Bei der Unterbett-Granulation sitzt die Sprühdüse im Anströmboden und verteilt die Granulierflüssigkeit unmittelbar in das Produkt. Die Bottom-Spray-Granulation erlaubt eine intensivere Befeuchtung des Produktes, was zu kompakteren Granulaten führt. Gegenüber dem Top-Spray-Verfahren ist die Tröpfchenreisezeit bis zum Kontakt mit dem Produkt kürzer und die Gefahr der Bartbildung reduziert, da die Düse durch das direkt umspülende Produkt frei gehalten

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