Method of spray application, and spray apparatus, for bentonite material
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United States of America Patent
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Jun 25, 2013
Grant Date -
Oct 8, 2009
app pub date -
Aug 10, 2006
filing date -
Aug 19, 2005
priority date (Note) -
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Abstract
The present invention provides a spray method and spray apparatus for bentonite-based material that allow forming a bentonite layer of high dry density. A spray apparatus 1 comprises a supersonic nozzle 2, to which a compressor 5 and a bentonite container 6 are connected. The supersonic nozzle 2 is fed compressed air from the compressor 5 and a bentonite-based material from the bentonite container 6. The compressed air, mixed with the bentonite-based material, is accelerated to supersonic speed when passing through a constriction portion 14 of the supersonic nozzle 2, and is sprayed at supersonic speed out of a jet orifice 11.
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