To dose dry
ice pellets directly into the feeding zone of the extruder, a modified volumetric screw feeder and tumbler mixer were developed (Fig.
Recent findings on
ice pellets characteristics lead to the need for clarification of their definition.
It takes approximately 20 min to go through 30 lb of
ice pellets, which is about how long it takes to clean both halves of a mold measuring 2 x 3 ft.
It is a mechanical effect caused by the impact of the dry
ice pellets and an expansion due to the partial sublimation of the pellet (Uhlmann et al.
With a production capacity of 90 kg/hr of 3 mm diameter dry
ice pellets, the system is geared toward small- and medium-run permanent mold and diecasting foundries that clean their molds by hand or robot.
Xerox employees found they could clean returned Xerox equipment with dry
ice pellets instead of volatile organic solvents.
By mid-afternoon, however, someone in their wisdom at the London Weather Centre decided they did not actually observe snow after all, rather
ice pellets (hands up now who knows the difference).
Blasting with dry
ice pellets removes old coatings, rust and dirt without damaging the substrate below, but unlike other blast media, on impact the pellets are converted into a gas and released into the atmosphere, making the process dust and contaminant free, The technique is particularly suitable for cleaning detailed or delicate components and in markets such as food processing, electronics or pharmaceuticals where contamination or surface damage cannot be tolerated.
I looked out through the steamy window against which
ice pellets were beating a dry rattle.
Newly formed
ice pellets become heavy as they collect freezing water droplets.
Most dry-ice blasters are either fixed or portable machines that mix
ice pellets with pressurized air.
It seemed to her that the words fell cold and glum as
ice pellets.
