Wide-particle-size coal series kaolinite upgrading process based on fluidization sorting

The invention discloses a wide-particle-size coal series kaolinite upgrading process based on fluidization sorting, and belongs to coal series kaolinite upgrading processes. The process comprises the steps that coal series kaolinite raw ore is firstly subjected to mechanical sorting, coarse crushing, screening and drying, the raw ore of -50 mm enters a composite dry method sorting machine to be pre-sorted, and light products are screened by a vibration screen of 6 mm; the ore of 6 mm to 50 mm passes through a dense gas-solid fluidized bed sorting machine to obtain coarse-grained concentrate and tailings, the concentrate is subjected to medium removal and then finely ground to obtain ore of -6 mm, and the ore of -6 mm and the original ore of -6 mm are evenly mixed and screened by a classifying screen of 0.5 mm; the ore of 0.5 mm to 6 mm passes through a vibrated fluidized bed sorting machine to obtain fine-grained concentrate and tailings; the ore of -0. 5 mm is subjected to ore grinding, sand removal and classification and then passes through a flotation machine to obtain flotation concentrate and tailings; the concentrate of 0.5 mm to 6 mm is ground after being subjected to medium removal, and is mixed with the flotation concentrate, and then titanium and iron-containing high-magnetic mineral is removed through magnetic separation. Medium solids are separated through a medium removal screen and are subjected to dry type magnetic separation and recycled as circulating media. According to the process, efficient sorting of the wide-particle-size coal series kaolinite raw ore is achieved, and great significance for development and utilization of coal series kaolinite resources in our country is achieved.