40 years Germany has been producing iron ore lepidolite from a tungsten-tin ore with magnetic separation and flotation. The mine only recovered tungsten and tin minerals in the 1920s, while iron-lithium mica was abandoned as tailings. Due to the market demand, the iron-lithium mica concentrate was recovered from the accumulated tailings by magnetic separation method, and then the iron-lithium mica beneficiation workshop was built. In 1945, the plant with a scale of 600 tons/day was built, respectively, using magnetic separation and magnetic separation. The iron-lithium mica concentrate is produced by combining two processes of flotation, and the concentrate grade is 95%-97% iron-lithium mica, and the recovery rate is 50%-70%. There are two types of ore processed, as shown in Table 1, and the production process is shown in Figures 1 and 2. Table 1 Mineral composition of two ores Quartz type Mineral name quartz Lithium mica fluorite topaz 锡石 Black tungsten ore content,% 78 20 1.3 0.5 0.1 0.1 Yunying rock type Mineral name Yunyingyan, granite Feldspar, porphyry quartz Iron lithium mica Black tungsten ore 锡石 other content,% 45 43 6 1 1 4 Figure 1 Old plant iron lithium mica beneficiation process Figure 2 New plant iron lithium mica selection process Suzhou YUZHEN Automation Technology Co.,Ltd. , https://www.yuzenvision.com