Cyclone dust collector

The utility model relates to a cyclone dust collector for carrying out gas-solid separation on dust-contained gas generated in the fields of metallurgy, chemical industry, environmental protection and the like, especially blast-furnace gas. The utility model is characterized in that a vertical guide plate (4) is arranged in a cyclone chamber (7) of the dust collector; by the combined action of the vertical guide plate (4) and a guide cone (3), the dust-contained gas generates axial speed and tangential speed, and thereby, the goal of dust and gas separation is achieved. The cyclone dust collector has novel arrangement mode of the guide plate and has high efficiency of the equipment dust collector and can effectively reduce the dust content in effluent gas, reduces environmental pollution, simultaneously lowers the load of subsequent dust removal installations and reduces the investment and operating cost.