NOVELTY - The method involves providing different components consisting of dry fraction of solid urban waste (MSW) in shredded form and mixtures of elastomeric material and thermoplastic materials. The components are separately supplied onto a continuous conveyor (18) so as to form overlapping layers of components. The components are discharged and stored into a temporary accumulation container (10a) so as to form refused derived solid fuel. Then the fuel is supplied to a combustion plant.    USE - Method of producing refused derived solid fuel and feeding fuel to combustion plant e.g. thermal plant for generation of heat, thermoelectric plant for generation of electric power and plant for manufacture of cement.    ADVANTAGE - The refused derived solid fuel is prepared and stored easily, while maintaining resultant mixture constantly stirred to prevent agglomeration and separation of fractions without increasing maintenance costs.    DETAILED DESCRIPTION - The thermoplastic polymer material comprises a material obtained from shredding of chlorine-free waste plastics materials, and 90% of the weight of thermoplastic material has an average particle dimension less than 25 mm. The elastomeric polymer material consists of a material obtained from shredding of waste tires after separation of metal and textile reinforcing materials, and 90% of weight of elastomeric material has an average particle dimension less than 25 mm. The dry fraction of MSW is obtained from an unprocessed MSW by mechanical separation of organic fraction, separation of metal materials, shredding and by subjecting raw MSW to a process of biostabilization and a process of removing a fine fraction. The removed fine fraction has a dimension of less than 80 mm and 90% of weight of the dry fraction of MSW has an average particle dimension less than 25 mm. The dry fraction of MSW has a moisture content not exceeding 15% by weight. The produced RDSF is subjected to a stage of compaction, transported to the combustion plant and then subjected to a disaggregation stage before the stage of feeding it to the combustion plant. The compacting stage is carried out so as to obtain a compacted RDSF with a bulk density ranging from 0.50 to 0.95 g/cm3 and 0.60 to 0.90 g/cm3. A metering screw (22a) has an advancing rate regulated in relation to the quantity of each component weighed by a corresponding weighing system. A continuous conveyor collects various components in the form of successive overlapping layers having a bulk density which increases from the bottom towards the top. A lower layer consisting of thermoplastic material, an intermediate layer consisting of dry fraction of the MSW, and an upper layer consisting of elastomeric material is formed on the continuous conveyor belt (8c). The obtained RDSF has a bulk density of less than 0.60 g/cm3, and has a bulk density from 0.35 to 0.12 g/cm3. An INDEPENDENT CLAIM is included for plant for producing refuse derived solid fuel.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the plant for producing refuse derived solid fuel.    Shredding device (7)    Conveyor belt (8c)    Temporary accumulation container (10a)    Continuous conveyor (18)    Metering screw (22a)