Method and apparatus for transforming municipal solid organic and inorganic waste into aggregates

A method for transforming solid urban waste into aggregates, comprising:

• obtaining a mixture of organic and inorganic solid urban waste;
• feeding the mixture into an apparatus in a feeding stage, said apparatus comprising:
• an extruding machine and a reactor, wherein the extruding machine comprises an extrusion cylinder through which a piston circulates inside an extrusion cavity that defines an extrusion axis;
• the end of the extrusion cavity is hermetically connected to the reactor;
• the longitudinal shaft of the reactor comprises a rotatory shaft in which some blades are arranged;
• between the end of the blades and the wall or dome of the reactor there is a clearance, forming a boundary layer of the reactor;
• wherein the rotatory shaft of the reactor and the blades are a rotor,
• compressing the mixture in a compression stage by the piston of the extruding machine moving forward until it comes into contact with the blades of the reactor, which blades reject the mixture, propelling it to the interior of the extrusion cavity, and preventing the mixture from moving forward with the resulting increase of pressure;
• processing the mixture in a processing stage wherein:
• (a) the piston moves forward, further compressing the mixture and forcing the mixture to penetrate the boundary layer of the reactor, forming a perimeter film,
• (b) the reactor shaft enters into resonance, where the potential energy built up by the rotor shaft is released as an emission of a shock wave, subjecting the mixture that is inside the extrusion cavity to a violent stirring, and subjecting the mixture which is in the boundary layer to pressure peaks produced by the vibration of the rotor shaft,
• (c) once the resonance phenomenon is finished, reducing the pressure on the piston of the extruding machine, decompressing the mixture, and repeatedly compressing the mixture on the rotor until the reactor shaft enters into resonance again and there is a new emission of shock waves, and
• (d) repeating the resonance and decompression cycles until the temperature of the mixture reaches 85° C. to 98° C. to transform the mixture of organic and inorganic solid urban waste into aggregates;
• and
• discharging the aggregates in a discharging stage.