METHOD OF AND APPARATUS FOR AGGLOMERATING SUBSTANCES BEING HYDOLYSABLE BY MEANS OF STEAM

Process of agglomeration of poorly soluble and hydrolysis sensitive materials in which the material, in powder form, is allowed to fall, together with a water-soluble powdered binding material, into a steam atmosphere at 85-105 degrees C. where it spends 0.5-10 seconds. Further free-fall takes place...

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Bibliographic Details
Main Authors UHLEMANN HANS, SEYFFERT INA, WALTER REINHARDT, MAASZ JOACHIM MARTIN
Format Patent
LanguageEnglish
Published 13.10.1997
Edition6
Subjects
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:Process of agglomeration of poorly soluble and hydrolysis sensitive materials in which the material, in powder form, is allowed to fall, together with a water-soluble powdered binding material, into a steam atmosphere at 85-105 degrees C. where it spends 0.5-10 seconds. Further free-fall takes place during which drying occurs and contact between primary particles is caused by liquid bridges in the condensate (in which the binding material is dissolved) and only a small amount due to solid bridges. Final drying involves an integrated flow-bed system and the product has a water content of less than 5 (preferably less than 1) wt.%.
Bibliography:Application Number: PL19970319399