METHOD AND ROTARY PROCESSOR FOR PROCESSING WASTE INTO FERTILIZER

摘要

A rotary processing machine comprises a rotor arranged in a housing, the rotor including an impeller and multiple rotor assemblies adapted to generate a high velocity vorticial airflow for comminuting a feedstock. In one embodiment the rotor shaft is axially adjustable to adjust the airflow by varying the position of the rotor elements. In another embodiment an angle of incidence of the rotor elements is adjustable to suit a mechanical characteristic of the feedstock. In another embodiment the machine comprises rotor elements having upper and lower surfaces defining lines which are symmetrical about a first plane and converge in a convergent region to a trailing edge. The machine may be used to process municipal solid waste in combination with biochar so as to impregnate the biochar with the waste, providing an improved fertilizer. Preferably the biochar is derived by pyrolysis of a separated fraction of a mixed waste stream in a self sustaining process.