Rotary furnace

A rotary furnace, comprising a roller, wherein an end face of each of a feed end and a discharge end of the roller is a closed end face, and the feed end is higher than the discharge end, and the rotary furnace further comprises:

• a feed device rotatably and sealingly communicating with a feed inlet at the feed end of the roller, wherein a cross-sectional area of the feed inlet is smaller than the cross-sectional area of the feed end, and an axis of the feed inlet coincides with a rotational axis of the rotary furnace;
• a discharge device communicatedly arranged at the discharge end of the roller, wherein a roller material outlet is at a position rotatably and sealingly cooperating with the discharge device, a cross-sectional area of the roller material outlet is smaller than a cross-sectional area of the discharge end, and an axis of the roller material outlet coincides with the rotational axis of the rotary furnace;
• a drive device arranged outside the roller, and configured to drive the roller to oscillate reciprocatingly around the rotational axis of the rotary furnace;
• a support device arranged outside the roller, and configured to rotatably support the roller to oscillate reciprocatingly around the rotational axis of the rotary furnace;
• and
• an oscillation control device connected to the drive device through wires, and configured to control the drive device to motion, to control a radian and frequency of the reciprocating oscillation of the roller
• a movable duct assembly communicatedly arranged on the roller and configured to allow a fluid material or a heat source to enter and exit the roller.