Dry Ice Production - Airgas.com

Airgas Dry Ice
Dry Ice Production
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Dry ice is made by allowing liquid CO2 to expand to atmospheric pressure through a nozzle into a chamber. A portion of the constricted liquid vaporizes and cools the remaining liquid CO2 to form affine solid dry ice particles called “snow” Under pressure, these fine snow particles can be compressed into solid dry ice blocks weighing approximately 50-60 pounds. These large blocks are often sliced or crushed into many commercially available shapes and sizes.

An alternate method is to expand liquid carbon dioxide into a chamber to form dry ice snow, which is then compressed and extruded through a perforated plate to form nuggets or pellets. There are several size pellets available.