Production of heated bituminous mixes

Abstract From the Canadian patent

A process for the production of heated aggregate mix such as bituminous mix, and a reactor for carying out the process. In one aspect, the process entails the. control of gas flow through a tumbler drum preferably, by controlling exhaust from the drum in dependence upon, the continuous monitoring of a parameter such as gas, pressure within the drum. In a second aspect the aggregate contents of the drum are heated by using a burner to preheat the gas flow, a technique which permits admission of the drum feed as a homogenous stablized mix.