Blast furnace molten iron discharging system of iron making plant

The utility model provides a blast furnace molten iron discharge system of an iron making plant. The blast furnace molten iron discharge system comprises an iron outlet, a main channel, a skimmer, double sand dams and a molten iron tank. The tap hole is formed in the blast furnace; the main runner is arranged below the iron notch, and molten iron and iron slag which are smelted are discharged into the main runner through the iron outlet; the skimming device is movable and can be disassembled and assembled; the double sand dams comprise a first sand dam and a second sand dam; and the molten iron tank collects the separated molten iron. According to the blast furnace molten iron releasing system of the iron making plant, the skimming device is made to be movable, the easily damaged part of the skimming device can be replaced in time in the releasing process, and due to the fact that the skimming device is movable, the skimming device does not need to be completely replaced during replacement, only the damaged p