Method of Removal:
- A methodical approach similar to hosing down a driveway is required if dry ice is to be effective on oil and gel type contaminates.
- You must start at one end and work the grease or oil to the other end where it can be captured by an absorbent cloth or be vacuumed or squeegee for disposal.
- Paper or a plastic drop cloth can be used to catch the contaminant as it is removed from the substrate.
- Dry ice doesn’t dissolve the oil or make it disappear.
- An acceptable method of handling the contaminant is required when it is relocated by the dry ice blasting process.
- Viscous materials are very readily removed by Envice.
- There is, however, a potential for reposition. Light oil on an accessible flat surface may be removed at up to 20 Sq Ft. per minute while heavier “pure” grease may be limited to approximately 4 Sq. Ft. per minute.
- Grease that is being removed from a surface is seldom “pure”. Generally, it has been mixed with dust and production debris and cured by friction and or heat. Removal of this material may be in the range of one Sq. Ft. per minute.
- Asphalt tar and related materials tend to contract and lose their bond quickly, particularly on a smooth surface.