US PATENT SUBCLASS 34 / 372
.~.~ Spray drying and cooling of slurry or suspension

Current as of: June, 1999
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34 /   HD   DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS

282  DF  PROCESS {24}
359  DF  .~ With fluid current conveying or suspension of treated material {3}
372.~.~ Spray drying and cooling of slurry or suspension {1}
373  DF  .~.~.~> With contact with additional gas or vapor flow {1}

DEFINITION

Classification: 34/372

Spray drying and cooling of slurry or suspension:

(under subclass 359) Process wherein a mixture of particles dispersed in a liquid is directed through a nozzle to atomize the suspension or slurry for promoting intimate contact with drying gas or vapor stream that in addition to drying the suspension or slurry reduces the temperature of the suspension or slurry.

(1) Note. It is essential that the suspension or slurry undergoes cooling to be placed here. If the suspension or slurry is heated during the drying process then the subject matter should go in Class 159, Concentrating Evaporators.