CEMENT CALCINING FURNACE Russian patent published in 2020 - IPC F27B7/14 

FIELD: chemistry.

SUBSTANCE: invention relates to a cement calcining furnace. Furnace comprises a drum arranged horizontally, mounted on a plate fixed by means of elastic elements on the base, and equipped with a vibroactivator and located along the entire length of the drum with a spring with a device for changing the pitch of the spring turns by stretching or compressing, drum is made of conical shape of strips of curvilinear shape of different order and degree of curvature, with different sizes along width with their increase along drum length from inlet to outlet hole with formation along its perimeter of multiturn screw surface with smooth helical lines and screw grooves with inclination angle relative to drum rotation axis, coiled in vertical plane in longitudinal direction and bent along helical lines in transverse direction on mandrel in form of paraboloid of revolution, and along entire length of drum is mounted a conical spring with square cross section of turns and with direction of turns, opposite to direction of rotation of drum and opposite direction of screw lines and screw grooves inside drum.

EFFECT: higher efficiency, simplified manufacturing and expanded process functionality.

1 cl, 8 dwg