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US 4,104,736 AGranted
Apparatus and method for recycling used asphalt-aggregate composition
OwnerRobert L. Mendenhallinventor
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OwnerRobert L. Mendenhallinventor
Estimating the term…
An improved asphalt-aggregate recycling process includes heating asphalt-aggregate composition by direct exposure to hot gases of combustion to form a gaseous exhaust mixture of carbon dioxide, water vapor and hydrocarbon volatiles from the heated asphalt, subjecting the gaseous mixture to a centrifugal force sufficient to separate the mixture into a first layer comprising a major amount of the hydrocarbon volatile condensate particles, and a second layer comprising a major amount of the carbon dioxide and water vapor. The first layer containing the condensed hydrocarbon volatiles is then separated out and preferably directed to a hydrocarbon burner as fuel for heating the asphalt-aggregate composition. The improved apparatus improves means for centrifugally physically separating the hydrocarbon from the gaseous mixture.
A process for heating asphalt-aggregate composition comprising directly exposing the composition to hot gases of hydrocarbon combustion to form a gaseous exhaust mixture comprising carbon dioxide, water vapor and hydrocarbon volatiles form heated asphalt, directing said gaseous mixture through a chamber to create centrifugal force on said gaseous mixture sufficient to separate said mixture into a first layer comprising said hydrocarbon volatiles, and a second layer comprising said carbon dioxide and water vapor, directing said first layer to a combustion chamber in which a flame and oxygen containing gas is introduced, and directing said second layer to atmosphere.
Apparatus for treating asphalt-aggregate composition comprising:
Dependencies are inferred from the claim text.