Design and Performance of a Laboratory Spray Dryer to Realize Evaporation-Induced Self-Assembly of Nanoparticles

This work discusses the design, development, and performance of an indigenous laboratory spray dryer with a relatively slow drying rate. The drying time of droplets of colloidal silica (5 wt%) and sodium chloride solution (20 wt%) in this spray dryer was nearly 10 s. The present system was composed...

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Bibliographic Details
Published in:Drying technology 2012-05, Vol.30 (6), p.679-686
Main Authors: Khan, Arshad, Sen, D., Kothalkar, P., Sapra, B. K., Mazumder, S., Mayya, Y. S.
Format: Article
Language:English
Subjects:
Colloidal droplets
Microparticles
Nebulizer needle
Salt
Silica
Spray drying
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Summary:This work discusses the design, development, and performance of an indigenous laboratory spray dryer with a relatively slow drying rate. The drying time of droplets of colloidal silica (5 wt%) and sodium chloride solution (20 wt%) in this spray dryer was nearly 10 s. The present system was composed of a four-jet compressed air nebulizer that generates a droplet size of 2-5 µm with a nebulization rate of nearly 60 mL/h. The generated powder can be collected using a cyclone or a wire mesh collector. Design and characterization of this system as well as characterization of the micrometric self-assembled powder grains obtained by this spray dryer are discussed.
ISSN:0737-3937
1532-2300
DOI:10.1080/07373937.2012.659365