Agitating – Mortar mixer type – With heating or drying
Patent
1990-07-23
1992-02-25
Hornsby, Harvey C.
Agitating
Mortar mixer type
With heating or drying
366 25, 432109, E01C 1910, B01F 906, F27B 734
Patent
active
050908138
ABSTRACT:
An asphalt drum drying and mixing plant capable of using recycled pavement aggregate material includes two interacting drums, each being heated to different temperatures. A first drum is a parallel flow drying and mixing drum. The recycled material is introduced at the intake or feed end of this first drum and dried and heated to a comparatively low temperature in a first region of the first drum. A burner of relatively lower heat generation capacity furnishes heated gases. The recycled material is protected by supplying the gases through a cylindrical combustion chamber within which the fuel is completely burned such that no luminous gases enter the drum and contact the recycled material. A second, adjacent region of the parallel flow drum is the mixing region. The recycled material is transferred to the mixing region with the close control over the temperature at which the material enters the mixing region. The parallel flow drum also has an intermediate feed chute through which virgin aggregate material is added. The virgin aggregate is heated in a counterflow drum to a temperature higher than the recycled material and the temperature of the final mix is controlled by changing the temperature of the virgin material. The exhaust from the mixing region is introduced as secondary air into the counterflow drum burner assembly. From the counterflow drum all gases are passed to a cleaning system including a cyclone separator and a baghouse filter. From the cyclone separator and the baghouse filter separated material and fines are routed into the mixing region together with liquid asphalt cement.
REFERENCES:
patent: Re31904 (1985-06-01), Mendenhall
patent: 1727340 (1926-10-01), Flory
patent: 3865541 (1975-02-01), Wilson et al.
patent: 3880143 (1975-04-01), Hart et al.
patent: 3920380 (1975-11-01), Heian
patent: 4047884 (1977-09-01), Heian
patent: 4190370 (1980-02-01), Brock et al.
patent: 4207062 (1980-06-01), Moench et al.
patent: 4208131 (1980-06-01), Mendenhall
patent: 4211490 (1980-07-01), Brock et al.
patent: 4318619 (1982-03-01), Schlarmann
patent: 4326809 (1982-04-01), Mendenhall
patent: 4332478 (1982-06-01), Binz
patent: 4395129 (1983-07-01), Musil
patent: 4477250 (1984-10-01), Brashears et al.
patent: 4555182 (1985-11-01), Mendenhall
patent: 4579458 (1986-04-01), Ohlson
patent: 4600379 (1986-07-01), Elliott
patent: 4705404 (1987-11-01), Bruggemann
patent: 4738539 (1988-04-01), Marconnet
patent: 4802139 (1989-01-01), Sasaki
patent: 4813784 (1989-03-01), Musil
McFarland William D.
Musil Joseph E.
Cedarapids Inc.
Hornsby Harvey C.
LandOfFree
Dual drum recycle asphalt drying and mixing method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dual drum recycle asphalt drying and mixing method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual drum recycle asphalt drying and mixing method and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1889176