Methods and systems for manufacturing modified asphalts
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United States of America Patent
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Mar 15, 2011
Grant Date -
Dec 17, 2009
app pub date -
Jun 12, 2009
filing date -
Jun 13, 2008
priority date (Note) -
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Abstract
Methods and systems for efficiently manufacturing modified asphalt materials include agitating a base asphalt at a high shear rate using an in-line mixer equipped with a rotor-stator mixing tool while simultaneously exposing the asphalt to oxygen by blowing an oxygen-containing gas at a high gas flow rate through openings in the rotor-stator mixing tool and heating the asphalt at an elevated temperature.
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