Thermal reduction apparatus for metal production, gate device, condensing system, and control method thereof

A condensing system of a thermal reduction apparatus, the condensing system comprising:

• a plurality of condensing devices which are connected to a reducing unit of the thermal reduction apparatus, condense a metal vapor at a tip of a condenser, and produce a metal crown;
• a chamber which accommodates the plurality of condensing devices in parallel and shares a discharge passage for the metal crown;
• a branch pipe from the reducing unit which forms a space unit that covers a plurality of inlet pipes configured in parallel at one side of the chamber, and allows metal vapor to flow into the respective inlet pipes;
• control valves which are installed in the space unit and open and close inlets of the respective inlet pipes while being moved rectilinearly;
• and
• a control unit which controls opened and closed states of the control valves in accordance with whether condensing processes are carried out in the respective condensing devices, so as to adjust a movement direction of the metal vapor, and closes the control valves of the respective condensing devices when the condensing processes are not being carried out in the respective condensing devices, so as to block an inflow of the metal vapor.