Agitating – Mortar mixer type – With heating or drying
Patent
1991-12-27
1995-11-28
Gerrity, Stephen F.
Agitating
Mortar mixer type
With heating or drying
34137, 366 34, 366 57, 366144, 3661753, 3661801, 432111, B28C 546
Patent
active
054701465
ABSTRACT:
A drum mixer asphalt plant is provided with a rotatable cylinder 10 in which virgin aggregate, recycle material and liquid asphalt are mixed to produce an asphaltic composition and the hot gas stream for heating and drying the materials flow in countercurrent relation. In a first zone within the cylinder 10, aggregates are heated and dried by heat radiation and a hot gas stream generated at a burner head 46 of a combustion assembly 40. In a second zone within the drum cylinder 10 isolated from the burner flame and hot gas stream by the combustion assembly 40, liquid asphalt is sprayed from an injection tube 76 to mix with aggregate materials. A recycle feed assembly 60 delivers recycle asphalt material to the second zone also for mixing with the aggregate and liquid asphalt.
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National Seminar on Asphalt Pavement R
Gerrity Stephen F.
Standard Havens, Inc.
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