Agitating – Mortar mixer type – With heating or drying
Patent
1989-02-03
1989-09-19
Simone, Timothy F.
Agitating
Mortar mixer type
With heating or drying
366 15, 366 40, 366233, 366235, B28C 506
Patent
active
048675725
ABSTRACT:
An asphalt plant apparatus includes an inclined rotary drum dryer, the lower end of which is received within a concentric fixed sleeve. Aggregate is introduced into the upper end of the rotary drum dryer for heating and drying and is discharged from the lower end of the drum into an annular space between the drum and the concentric fixed sleeve. Recycleable asphalt pavement (RAP) and fines may be introduced into the annular space along with the heated and dried aggregate. Flights on the exterior of the rotating drum mix the aggregate and RAP and move the mixture toward the opposite end of the concentric fixed sleeve, heat from the heated aggregate, from the flights, and from the hot shell of the drum melting the asphaltic content of the RAP. Liquid asphalt is introduced into the sleeve for mixing along with the aggregate and RAP, and the resulting mixture is discharged from the sleeve for use as an asphalt paving composition.
REFERENCES:
patent: Re31904 (1985-06-01), Mendenhall
patent: Re31905 (1985-06-01), Mendenhall
patent: 2421345 (1947-05-01), McConnaughay
patent: 2487887 (1949-11-01), McEachran
patent: 4136966 (1979-01-01), Mendenhall
patent: 4600379 (1986-07-01), Elliott
patent: 4616934 (1986-10-01), Brock
patent: 4813784 (1989-03-01), Musil
Smith, A Summer of Recycling Hot-Mix Asphalt Pavements, PAVING FORUM, Winter, 1978, third column of p. 6.
Hot Mix Recycling Project is Nation's First Using Conventional Equipment, CONSTRUCTION BULLETIN, Oct. 1, 1976.
Brock J. Don
May James G.
Astec Industries Inc.
Simone Timothy F.
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