Abstract: Over two-thirds of the coal in China is in northwestern and northern China where water resources are scarce. To realize the high-efficient and clean utilization of those coals, the study progress and application of gas-solid fluidization technique in coal separation were discussed. Modularized dry coal beneficiation technique using an industrial gas-solid fluidized bed provides a new method to high-efficient separation of coal. The magnetically or vibrated fluidized bed separation technique can improve the performance of fluidization and separation of typical fluidized bed. Fine coal can be effectively separated. The two techniques have wide application prospect.

Key words: gas-solid fluidization, fluidized bed, dry beneficiation of coal