Goaf Governance Project of Chifeng NFC Baiyinnuoer Mining Co., Ltd. covers a new complete filling system by Chifeng NFC Baiyinnuoer Mining Co., Ltd., including the construction, design management, procurement, installation and test run of the filling system and its supporting works. The Designer is CINF Engineering Co., Ltd. During the design of the filling system, the simultaneous filling of the new and old goaf areas is considered, two slurry preparation systems with the same capacity are provided in the filling station, which can be mutually standby, with certain redundancy. The designed filling slurry preparation capacity is 2×110 m³/h. The filling system is used to fill full tailings produced by the concentrator into the downhole goaf area. The two important core equipment - the deep cone thickener and filling industrial pump, are selected from world-renowned brands with high reliability, which lays a solid foundation for ensuring the project quality.