Countercurrent drum mixer with second heat source

Details Countercurrent drum mixer with second heat source Countercurrent drum mixer with second heat source

1991-09-19

1993-04-13

Stinson, Frankie L.

Agitating

Mortar mixer type

Methods

366 25, 366 7, 366 15, B01F 320

Patent

active

052018393

ABSTRACT:
An asphalt production system utilizing a pair of rotatable drums for producing an asphaltic composition is provided. The asphaltic composition is produced by separately heating a volume of virgin aggregate material in a countercurrent drum dryer and heating a volume of recycle material in a parallel flow drum mixer. The hot virgin aggregate material is mixed with the heated recycle material at an intermediate location within the parallel flow drum mixer. A ducting system is provided for interconnecting the ends of the drums such that the hot exhaust gases from one drum are circulated into the other drum thus producing a common flow of exhaust gases between the drums.

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patent: 5054931 (1991-10-01), Farnham et al.
Brock, J. Don, "Energy Conservation on Asphalt Plants", 1980 (month unknown) copyright Astec Industries, Inc.

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