NOVELTY - Producing a refuse-derived solid fuel (RDSF) and feeding the fuel to a combustion plant comprises separately metering and feeding the first component and the second component onto a continuous conveyor such that overlapping layers of the components are formed; discharging the assembled components into temporary accumulation container(s) to form the RDSF; and feeding and metering the RDSF to a combustion plant.    USE - For producing a refuse-derived solid fuel for use as a primary fuel of a combustion plant or secondary fuel in co-combustion plant, wherein the combustion plant is e.g. thermal plant for the generation of heat, thermoelectric plant for the generation of electrical power, or plant for the manufacture of cement.    ADVANTAGE - The invention does not need to premix of the various fractions of the RDSF during the production stage and to maintain the resultant mixture constantly stirred to prevent agglomeration and/or separation of the fractions. Mixing between the various fractions only takes place at the end of the production process when the RDSF is placed in the temporary accumulation container which feeds the combustion plant.    DETAILED DESCRIPTION - Producing a refuse-derived solid fuel and feeding the fuel to a combustion plant comprises providing a first component consisting of a dry fraction of solid urban waste (MSW) in a shredded form; providing second component(s) in a shredded form comprising an elastomeric material and/or a thermoplastic material; separately metering and feeding the first component and the second component onto a continuous conveyor such that overlapping layers of the components are formed; discharging the assembled components into temporary accumulation container(s) to form the RDSF; and feeding and metering the RDSF to a combustion plant.    An INDEPENDENT CLAIM is also included for plant for producing a refuse-derived solid fuel comprising storage container(s) (10a-10c) for a first component consisting of a dry fraction of MSW in a shredded form; metering and feeding device(s) for the first component; storage container(s) (10b) for second component(s) in a shredded form comprising elastomeric material and/or thermoplastic material; metering and feeding device(s) for the second component(s); continuous conveyor(s) (4) onto which the components are fed separately by the feeding and metering devices to form overlapping layers of the components; and temporary accumulation container(s) into which the components are discharged by the continuous conveyor(s).    DESCRIPTION OF DRAWING(S) - The figure shows a diagrammatical plan view of a plant of the invention.    First zone (1)    Second zone (2)    Third zone (3)    Conveyor (4, 8d, 8e, 18)    Magnetic separator (5a, 5b)    Conveyor belt for manual sorting (6)    Shredding device (7)    Conveyor belt (8a-8c)    Dryer (9)    Storage containers (10a-10c)    Weighing system (11a-11c)    Loading hopper (12)    Articulated trailer (19)    Metering screws (22a-22c)