Cathode material drying device and cathode material drying production line

Patent metadata

Field	Value
Publication number	US-12595962-B2
Application number	US-202318371474-A
Country	US
Kind code	B2
Filing date	Sep 22, 2023
Priority date	Aug 9, 2021
Publication date	Apr 7, 2026
Grant date	Apr 7, 2026

Abstract

This application discloses a cathode material drying device and a cathode material drying production line. The cathode material drying device includes: a rotary kiln, where 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, where 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, so as to make an air flow direction in the rotary kiln opposite to a delivery direction of a cathode material.

First claim

The invention claimed is:

1 . 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.

2 . A cathode material drying production line, comprising the cathode material drying device according to claim 1 .

3 . The cathode material drying production line according to claim 2 , further comprising a feeding structure, wherein the feeding structure comprises a screw feeder and a feed box; and a feed end of the screw feeder is connected to the feed box, and a discharge end of the screw feeder communicates with the kiln head of the rotary kiln through the sealing structure.

4 . The cathode material drying production line according to claim 3 , wherein the feed box is connected to the dust collector through a dust exhaust pipe, and the dust exhaust pipe communicates with the main pipe through a third pipeline.

5 . The cathode material drying production line according to claim 2 , further comprising a discharging structure, wherein the discharging structure comprises a discharge box and a double-roll crusher; and one end of the discharge box communicates with the kiln tail of the rotary kiln through the sealing structure, and the other end of the discharge box is connected to the double-roll crusher.

Assignees

• Guangdong Brunp Recycling Tech Co Ltd
• Hunan Brunp Recycling Tech Co Ltd
• Hunan Brunp Ev Recycling Co Ltd

Inventors

• Ma Tengyue
• Shen Kuiwen
• Peng Dong
• Yang Yunguang
• Li Changdong

Classifications

• F27D17/20

  Arrangements for treatment or cleaning of waste gases · CPC title

• F27B7/33

  Arrangement of devices for discharging · CPC title

• F26B25/007

  Dust filtering; Exhaust dust filters · CPC title

• F27B7/362 Primary

  Introducing gas into the drum axially or through the wall · CPC title

• F26B11/028

  Arrangements for the supply or exhaust of gaseous drying medium for direct heat transfer, e.g. perforated tubes, annular passages, burner arrangements, dust separation, combined direct and indirect heating · CPC title