Abstract: Daxigou, Shaanxi Province, has the largest siderite deposit in China, and the existing roasting process and tailings treatment were constantly facing the challenges of production cost and environmental protection. A systematic study was undertaken to enhance the vitality of mining enterprises and achieve the goal of "reducing costs and increasing efficiency, no tailings". The results showed that the test ore consisted of magnetite-siderite with sulfur, and copper, and low phosphorus. Based on the properties of the ore, a comprehensive process flow comprising of pre-selection tailing, dry milling, flash magnetization roasting, iron beneficiation, the recovery of copper and mica and tailings building materials was developed. The TFe grade of the raw ore was low, only 19.91%, which would significantly increase the cost of subsequent processing. Therefore, the ore was pretreated by magnetic separation to achieve a TFe grade of 23.34% and reduce the subsequent processing cost. Furthermore, through the whole process, the iron concentrate with TFe grade of 60.49%, iron recovery rate of 83.81% was obtained, along with the copper concentrate with a copper grade of 17.54% and copper recovery rate of 76.43%. Meanwhile, the mica concentrate was obtained, and its K₂O and Al₂O₃ contents were 8.32%, 25.36% and recovery rate was about 30% respectively. Additionally, the secondary mica concentrate contained K₂O and Al₂O₃ at 6.06% and 18.66%, respectively, with a recovery rate of more than 20%. Notably, the tailings could be repurposed as building materials. All component utilization of the ore and the goal of tailing-free mine would be achieved.