ASPHALT-CONCRETE MIXING PLANT Russian patent published in 1999 - IPC

FIELD: construction materials industry. SUBSTANCE: in mixing plant, components of asphalt-concrete mixture are delivered by conveyors into drying drums which are installed at incline. Located in one end of each drying drum is furnace with nozzle, and located in other end of each drying drum is discharging device through which subsequent delivery of material is effected to screen for separation into fractions and further for delivery to hot material bin, weighing bin and to mixing device which is connected with bitumen proportioner. Hot gases produced in burning of fuel and also evaporated products are directed to dust catching system and for further mixing with major mass of asphalt-concrete components. Technological supply of components for processing and/or to be used in major mixture is carried out at least by two oppositely installed conveyers high are located in direction of delivery at acute angle with respect to vertical line and to main plane. Furnaces of drying drums are of cross-section similar to nozzle jets repeating kinematic velocity cross-sectional model of falling solid components of asphalt-concrete presented in normal cross-section of drying drums. Aforesaid embodiment of asphalt-concrete mixing plant allows for producing various compositions of mixtures with high productive capacity and superb quality. EFFECT: higher efficiency. 1 dwg