Agitating – Mortar mixer type – With gas incorporating; fluid mixing – delivering – or conveying
Patent
1977-09-07
1979-08-21
Hornsby, Harvey C.
Agitating
Mortar mixer type
With gas incorporating; fluid mixing, delivering, or conveying
366 15, 366 24, 366 57, 366228, B28C 520, B28C 538, B28C 542
Patent
active
041651847
ABSTRACT:
A method of hot mix recycling of old asphaltic concrete paving heats the old pavement, after it has been removed and sized, to a temperature below its firing point and heats fresh aggregate to a greater temperature before combining the two and adding new asphalt. The method is embodied in a drum-mixer type of apparatus modified by inserting a smaller drum in the upstream portion of the large drum. The burner fires into the smaller drum into which the fresh aggregate only is introduced while the old mix (plus additional fresh aggregate in certain cases) is introduced into the annular space between the two drums, the fresh aggregate and the old mix being thereafter combined in the large drum, new asphalt added and the mix further heated.
REFERENCES:
patent: 2487887 (1949-11-01), McEachran
patent: 2989291 (1961-06-01), Bedner
patent: 3832201 (1974-08-01), Shearer
patent: 4025057 (1977-05-01), Shearer
patent: 4075710 (1978-02-01), Jakob et al.
patent: 4075710 (1978-02-01), Jokob et al.
patent: 4089508 (1978-05-01), Anderson
patent: 4095285 (1978-06-01), Malbrunot
patent: 4096588 (1978-06-01), Mendenhall
Charles R. Foster, Hot Mix Recycling of Asphalt Pavements, Jul. 7, 1975.
Nat. Asphalt Pavement Association, Apr., 1977.
NAPA, Recycling Report, Sep., 1977.
Hornsby Harvey C.
Iowa Manufacturing Company of Cedar Rapids, Iowa
Nemmers James C.
Simmons Haven E.
Simone Timothy F.
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