A device (1) for drying and sanitising organic waste materials, comprising a container body (10) for housing the waste materials to be dried and provided with an inlet (16) for the materials to be dried and an outlet (17) for the dried materials, mixing elements (20) located in the container body (10) and provided with at least a blade (21) able to mix the materials to be dried and sanitised, projectingly supported by a rotating shaft (23), a ventilation circuit (30) able to generate a forced ventilation of air internally of the container body (10), and comprising generator means (33) of an air flow located externally of the container body (10) communicating with at least a dispenser nozzle (34) located internally of the container body (10), in which the at least a dispenser nozzle (34) is associated to the at least a blade (21) able to mix the waste materials located in the container body (10) wherein it comprises at least a temperature sensor (42) configured such as to measure a temperature internally of the container body (10) and in that it comprises a control system which receives a signal from the at least a temperature sensor (42) and is able to control the air flow injected into the container body (10) by the ventilation circuit (30) as a function of the signal received from the temperature sensor (42).
