Dry ice blasting: how does it work?
Dry ice cleaning is a blasting technique similar to sand blasting. The advantage of using solid CO2 or dry ice pellets as blasting material is twofold. Firstly the very low temperature of the dry ice pellets causes the contamination to freeze and contract resulting in the easy detachment of the contaminant from the base material. Secondly the dry ice pellets vaporize to carbon dioxide gas, which means that only the original contaminant is left for disposal. This natural evaporation of dry ice pellets is a major advantage of the dry ice cleaning method.
