Dry Ice Blasting – Clean with cold
Dry ice blasting uses the frigid temperature of dry ice “exploding” against the contaminant causing it to shrink and lose its adhesion. Dry ice is -109°F or -78°C.
Dry blast cleaning uses small pieces of dry ice the size of rice to shoot them out of a jet nozzle with compressed air. The nozzle’s unique shape can cause the particles to accelerate faster than the speed of sound before hitting the surface to be cleaned. (see energies-12-04787 for analysis)
Some dry ice blasting machines shave a dry ice block for softer blast cleaning material.
Dry ice is softer than sand or glass beads, so it does not damage the underlying surface. It works like sandblasting, high-pressure water, or steam blasting with better results.
The combination of kinetic, thermal, and sublimation energy produces unparalleled results. The super cold temperature of the dry ice blasting against the material to be removed causes it to shrink and lose adhesion. Additionally, when some dry ice penetrates through the contaminated material and contacts the warmer underlying surface, it causes the dry ice to turn into a gas, expanding under the harmful material and speeding its removal.
Dry ice blasting does not create secondary waste or chemical residues and is