PURPOSE: A solid material feeder of the pyrolysis melting facility is provided to check and control the weight of the solid material of a reservoir. CONSTITUTION: A solid material feeder of the pyrolysis melting facility comprises a reservoir(210), a measure system(215), a circle feeder(220), and a feeder(240). A solid material is input into the reservoir at a pyrolytic process. The measure system measures the weight of the solid material of the reservoir. The circle feeder controls the exhaust conductance of the solid material of reservoir. The feeder supplies the solid material exhausted from the circle feeder to a melting furnace.
