Patent ID: 6273345
Filing Date: 2001-08-14
Classification: B01F,B05B,B28C,E04F,F16L

Abstract:
A slurry spray applicator for spraying a settable slurry, comprising:a main slurry passageway configured for receiving a supply of pressurized slurry and having a supply end and an outlet end opposite said supply end;a first compressed gas inlet disposed intermediate said supply and outlet ends and in fluid communication with said slurry passageway for introducing a first supply of pressurized gas into the slurry, said inlet includes a fitting with a plurality of apertures connected to said slurry passageway for introducing said first pressurized gas into said passageway;a second pressurized gas inlet disposed closer to said outlet end than said first inlet and disposed in relation to said slurry passageway for introducing a second supply of pressurized gas into the slurry;a pressurized supply of adjuvant in fluid communication with said second pressurized gas inlet for providing a blended gas to said second gas inlet;valve means for controlling the flow of slurry through said passageway and the flow of said first and second gases into said slurry passageway;said applicator being constructed and arranged so that prior to the pressurized ejection of the slurry from said outlet end, said first gas is injected into the slurry, and said blended gas is subsequently mixed with the combined slurry and said first pressurized gas.