Dry ice blasting machines

Dry ice cleaning: explanations of the process, steps…

The cryogenic cleaning technique uses dry ice or dry ice (– 78.5 °C) as a cleaning agent.

The format used is pellet with a diameter of 3 mm (in the shape of sticks), and in the vast majority of cases the ice used is food grade.
You can get this precious media from gas companies such as Air Liquide, Messer, Air Products, Yara… or with one of their partners.

How does it work? Dry ice is placed inside the hopper or tank of a blaster.

This is then mixed with the compressed air using a rotor plate : by rotating the plate, the solid CO₂ pellets are faced with a compressed airflow. The resulting mixture is then conveyed through a firing pipe.

The projection of the ice on the surface to be cleaned is carried out using a gun and a spray nozzle.

The source of the compressed air may be either:
– an industrial network,
– a network of workshops,
– an electric or thermal construction compressor

The interest in cleaning by cryonics lies in the triple action of dry ice, which makes it a real solution to the removal of new contaminants.

By clicking on this link to know everything about dry ice cleaning,
you will discover a wealth of information on this process!

The first step is the mechanical shock or mechanical effect caused by the dry ice, projected at high speed or high velocity on the pollution: dry ice creates cracks on the contaminant (varnish, paint, glue …).

This leads to a weakening of pollution. This is made possible thanks to the kinetic energy stored by the pellets during their spraying (pellets are accelerated): Ec= 1/2 m (weight of CO₂) x V² (projection speed)

The second step is the thermal shock or thermal effect, also called “thermal differential”. Dry ice at -78.5 °C cools the pollution. This difference in the temperature of the pollution and the support retracts the latter without damaging the surface or substrate.

The third step is sublimation or change of state: the passage from the solid-state to the gaseous state of solid CO₂ into GAS CO₂, in a ratio of 1 to 700. The dirt is removed by the breath!

Dry ice blasting: an ecological treatment that does not involve the reprocessing of secondary waste

Ice blast cleaning is truly an ecological cleaning technique because unlike the use of sandblasting, aero scrub, hydroscrub or high-pressure cleaning, it does not generate secondary waste to be reprocessed.

The dry ice cleaning technique causes the removed dirt to fall by gravity. As a rule, a sweep or the use of vacuum cleaners (or suction) is enough!

The costs of reprocessing disappear.
Cryogenic cleaning is professional cleaning to the greatest degree!

For the degreasing of your surfaces (substrates), or to remove all types of dirt: ink, varnish, glue … or to remove food residues, this process is ideal!

Without chemicals, and without cleaning products, to ensure exemplary cleanliness of your production processes, the Cryogenic cleaning equipment Cryoblaster®, allows thanks to the projection of dry ice pellets (carbon dioxide), the dry cleaning of the surfaces to be treated: no oxidation possible, dry ice does not contain water.

Carbon dioxide in solid form (compacted dry ice) is an excellent low-temperature degreaser.

For cleaning in the food industry, or for interventions or decontamination after a fire damage, or for the treatment of surfaces with non-abrasive CO₂ pellets or balls, Cryoblaster cryogenic cleaning machines® are the essential tools for service providers and manufacturers.