Cathode material drying device and cathode material drying production line

A cathode material drying device, comprising:

• a rotary kiln, wherein a kiln head and a kiln tail of the rotary kiln each are provided with a sealing structure and the rotary kiln can rotate relative to the sealing structure;
• and
• an exhaust system comprising an air inlet pipe, an air outlet pipe, and a first fan, wherein the air inlet pipe communicates with the kiln tail of the rotary kiln through the sealing structure;
• the air outlet pipe communicates with the kiln head of the rotary kiln through the sealing structure;
• and the first fan is arranged on the air inlet pipe and/or the air outlet pipe to make, an air flow direction in the rotary kiln opposite to a delivery direction of a cathode material when the rotary kiln is working;
• a dust collector is provided on the air outlet pipe;
• four heating units are arranged in an axial direction of the rotary kiln, and the heating units are provided to form four temperature zones with different temperatures in the rotary kiln, which are a first temperature zone, a second temperature zone, a third temperature zone, and a fourth temperature zone along a direction from the kiln head to the kiln tail;
• a temperature in the first temperature zone ranges from 120° C. to 150° C., a temperature in the second temperature zone ranges from 150° C. to 180° C., a temperature in the third temperature zone ranges from 180° C. to 200° C., and a temperature in the fourth temperature zone is room temperature;
• the exhaust system further comprises a blowback assembly, and the blowback assembly comprises a first pipeline, a second pipeline, a second fan, and a main pipe;
• at least one first pipeline is provided;
• one end of the first pipeline communicates with the air outlet pipe, and the other end of the first pipeline communicates with the main pipe;
• a control valve is provided on the first pipeline;
• and the second fan is arranged on the main pipe;
• one end of the second pipeline is connected to a dust collecting end of the dust collector, and the other end of the second pipeline communicates with the main pipe;
• and a control valve is provided on the second pipeline;
• at least one selected from the group consisting of the main pipe, the air outlet pipe, the air inlet pipe, the first pipeline, and the second pipeline is provided with a gas heater.