Method and plant for recycling asphalt using hot aggregate...

Details Method and plant for recycling asphalt using hot aggregate... Method and plant for recycling asphalt using hot aggregate...

B - Operations, Transporting

01

F

259/9

B01F 15/06 (2006.01) E01C 19/10 (2006.01)

Patent

CA 1231707

ABSTRACT This invention provides a hot-mix asphalt recycling processes for reconstituting and upgrading old road materials. In usual hot-mix plants the asphaltic material is heated by a naked flame. Residual bitument in the asphalt is exposed to the naked flame from the burner, which can seriously damage the bitument and render it largely worthless. In order to reduce wastage, the invention provides for heating of aggregate in a heating zone, and supplying of the heated aggregate, usually cold reclaimed asphalt, and suitable binder material to a substantially flame-free mixing zone. By mixing these consitutents in that zone, it is possible to produce a usable hot asphalt pavement mix with reduced asphalt wastage.

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