Industrial equipment for the hot recycling of asphalt mixes

Industrial equipment for hot recycling of asphalt mixes, comprising:

• a portable bank of hoppers operable to meter recycled asphalt pavement and unadulterated petrous materials;
• wherein the bank of hoppers are mounted on a supporting structure;
• a plurality of gear motors;
• wherein the plurality of gear motors comprise a plurality of frequency converters;
• wherein the plurality of gear motors are operable to control the metering of the recycled asphalt pavement and unadulterated petrous materials,
• wherein the plurality of gear motors are operable to send a flow indicator signal to a control panel;
• wherein the control panel is operable to record the flow indicator signal;
• and
• wherein the plurality of gear motors are mounted on the supporting structure;
• a conveyor belt disposed below the bank of hoppers;
• wherein the conveyor belt is operable to receive the unadulterated petrous materials and transport them toward an inlet of a rotary cylinder;
• wherein the conveyer belt is supported on a plurality of load rollers;
• and
• wherein the plurality of load rollers are operable to drive the rotation of the cylinder;
• a tank;
• wherein the tank is operable to store a mixture of asphalt-rejuvenating agents;
• wherein the tank comprises a connecting pipe operable to meter the asphalt-rejuvenating agents towards the rotary cylinder;
• wherein the metering of the asphalt-rejuvenating agents is controlled by a volumetric gear pump;
• and
• wherein an outlet of the rotary cylinder comprises a temperature sensor operable to send a signal to a recycled asphalt mix temperature indicator in the control panel;
• a recycled asphalt mix lifting system disposed adjacent to the outlet of the rotary cylinder;
• wherein the recycled asphalt mix lifting system is operable to transport a recycled asphalt mix to a discharge silo;
• a combustion gas extractor disposed in the rotary cylinder operable to discharge combustion gases from a burner;
• and
• a fuel storage tank and a weight measuring element provided under the conveyor belt at the inlet of the rotary cylinder;
• wherein the weight measuring element is operable to record a weight of a material to be supplied;
• wherein the rotary cylinder comprises:
• an open-flame industrial burner mounted at the inlet of the cylinder, wherein the open-flame industrial burner is operable to transmit heat energy to the recycled asphalt pavement and unadulterated petrous materials;
• the inlet;
• the outlet;
• an internal continuous metal helicoid;
• wherein the internal continuous metal helicoid comprises a length of about 30% to about 80% of a length of the rotary cylinder;
• wherein walls of the internal continuous metal helicoid form a circular space in the center of the internal continuous metal helicoid, the circular space operable as a flame conduction zone;
• and
• wherein the internal continuous metal helicoid comprises a zone disposed between the walls;
• wherein the zone is operable for conduction or conveyance of the recycled asphalt pavement and unadulterated petrous materials, in a flame direction, as the rotary cylinder rotates;
• and
• wherein an indirect heat energy transfer transforms solid asphalt contained in the recycled asphalt pavement to a liquid phase without reaching combustion;
• an injection zone of the asphalt-rejuvenating agents;
• the injection zone disposed adjacent to an end of the helicoid;
• a plurality of mixing paddles disposed in an internal perimeter of the rotary cylinder and after the internal continuous metal helicoid;
• wherein the plurality of mixing paddles form a mixing zone;
• wherein the plurality of mixing paddles are operable to form a recycled asphalt mixture by mixing the recycled asphalt pavement and unadulterated petrous materials with the asphalt-rejuvenating agents;
• a plurality of expelling paddles disposed adjacent to the plurality of mixing paddles;
• wherein the plurality of expelling paddles are operable to expel the mixture through the outlet of the rotary cylinder;
• and
• wherein the plurality of mixing paddles and the plurality of expelling paddles occupy a remainder space of the rotary cylinder to recycle 100% recycled asphalt pavement.