Concentrated Powder Form

October 15, 2006
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Process that turns liquids into powder

In order to transform a liquid into a powder, the liquid is mixed under pressure with a compressed gas, thereby lowering its viscosity and surface tension to such an extent that it becomes sprayable. Both liquid and gas are expanded through a nozzle, forming fine droplets. The rapid release into atmospheric pressure sets the gas free from the droplets and forms a very fine droplet spray. Simultaneously, a carrier material is added to the fine spray. The carrier particles come into contact with the liquid droplets and free-flowing powders with liquid contents of up to 85% are formed.

Contact: University Bochum, Bochum, Germany.

For more information, see Transmaterial: A Catalog of Materials That Redefine our Physical Environment

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