Process for applying low-cement castable refractory material
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United States of America Patent
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Feb 8, 2000
Issued Date -
N/A
app pub date -
Apr 29, 1997
filing date -
Jul 11, 1994
priority date (Note) -
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Abstract
A method for placing a thixotropic low-cement castable refractory material without the necessity for forms. A low-cement castable material is mixed with a measured amount of water, then is pumped hydraulically through a hose to a nozzle assembly. Compressed air and a cement setting agent are added to the mixture at the nozzle. The addition of the setting agent at the nozzle overcomes the thixotropic nature of the low-cement castable, so that it will immediately 'set' in position when sprayed onto a surface, including vertical and overhead surfaces.
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