Continuous slurry dispenser apparatus

An apparatus for mixing an additive into a flowing, settable slurry, comprising:

• a main slurry passageway having an inlet for receiving a supply of the slurry and an outlet for dispensing the slurry, said passageway having a longitudinal axis;
• a control valve defining a portion of said main slurry passageway and configured for selectively controlling the flow of slurry in said passageway;
• an additive injector disposed in said passageway between said inlet and said outlet, said injector having an emitter disposed in close relationship with said axis and oriented toward said outlet;
• a static mixer disposed between said injector and said outlet for enhancing the uniform mixing of the additive and the slurry;
• connection points between said inlet, said valve and said static mixer being configured for smooth transition of slurry and the prevention of collection of slurry and premature setting of slurry;
• and
• said injector being configured for minimizing the collection of said slurry.

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 in such a way as to atomize the slurry as it progresses toward said outlet end;
• 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 without contacting said passageway;
• 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.