B - Operations – Transporting – 24 – C
Patent
B - Operations, Transporting
24
C
B24C 3/00 (2006.01) B24C 1/00 (2006.01)
Patent
CA 2111648
ABSTRACT A method for air blasting freshly formed ice particles toward a substrate to perform work on the substrate surface is provided. The method comprises: forming fresh ice particles of a desired particle sizing and at a desired mass flow rate; immediately drawing downwardly the freshly formed ice particles at the mass flow rate directly into a proximal end of a transport hose of reduced pressure; developing the reduced pressure in the hose by introducing blast air at a first volumetric flow rate to a blast nozzle which develops a sufficient velocity at the blast nozzle located at a distal end of the hose to blast the freshly formed ice particles at the mass flow rate towards the substrate surface to perform work on the surface; and introducing into the proximal end of the hose a cool stream of air at a second volumetric flow rate to cool the fresh ice particles as such particles flow along the hose towards the nozzle, the second volumetric flow rate of refrigerated air being determined by the reduced pressure in the hose.
Fraresso William D.
Visaisouk Somyong
Ice Blast International Corp.
Sim & Mcburney
LandOfFree
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