The invention discloses a device for recovering dust in
flue gas of a
roasting furnace, and relates to the technical field of accessory equipment of the
roasting furnace, the device comprises a shell, a
flue gas inlet
pipe, a water inlet
pipe and a water outlet
pipe are arranged on the side wall of the shell in a communicating manner, the water outlet pipe is arranged at the position close to the bottom of the shell, the water inlet pipe is located below the
flue gas inlet pipe and above the water outlet pipe, and the
flue gas inlet pipe is arranged in the shell. A water
inlet valve and a water outlet valve are respectively arranged on the water inlet pipe and the water outlet pipe; the filtering
assembly comprises a supporting plate, a first connecting ring, a filtering cylinder, a second connecting ring, a limiting ring plate and a driving
assembly; the reciprocating swing
assembly drives the multiple nozzles to rotate, then
compressed air sprayed out of the multiple nozzles continuously cleans the filter
cartridge, the filter
cartridge is driven by the first motor to rotate by 90 degrees every time, then the cleaning position of the filter
cartridge is adjusted, the effect of filtering dust in
flue gas by the filter cartridge is improved, and the dust removal efficiency is improved. And the snakelike heat exchange pipe can be used for recycling
waste heat in the
flue gas, so that waste of
heat energy is prevented.