External Heating Rotary Kiln

Inquiry

Introduction

The external heating rotary kiln is an indirectly heated high-temperature calcination system in which the heat source is located outside the rotating tube. Heat is transferred through the tube wall to the material, keeping the material completely isolated from combustion flue gases. This design enables precise temperature control and a controlled processing atmosphere, making the equipment suitable for calcination, pyrolysis, and carbonization of lithium battery materials, powdered minerals, and chemical raw materials. With stable operation and convenient maintenance, the kiln helps prevent flue gas contamination and maintain material purity.

The kiln is electrically heated and equipped with an imported temperature controller for fully automatic temperature regulation. The tube dimensions, equipment length, and operating temperature can be customized to meet specific process requirements.

Applications:

Lithium battery materials (including lithium iron phosphate and lithium manganese oxide), powder materials (including activated carbon and zinc oxide), rare earth materials, and non-ferrous metals. Typical processes include dehydration, calcination, and decarbonization.

Working Principle:

The external heating rotary kiln uses electric heating elements to generate heat outside the rotating tube. The heat is transferred through the tube wall to the material inside, raising it to the required processing temperature for dehydration, calcination, and other thermal reactions.

An automatic temperature control system continuously regulates the heating process to maintain stable operating temperatures, helping ensure consistent and reliable treatment results. Because the material remains isolated from combustion flue gases, the system helps reduce contamination and preserve material purity.

Features

1. Customized Design
The equipment is designed and configured according to the customer's material characteristics and process requirements, ensuring suitability for the intended application.

2. High-Precision Temperature Control
An imported temperature controller enables fully automatic temperature regulation with high control accuracy, helping maintain stable processing conditions.

3. Wide Range of Applications
Suitable for dehydration, calcination, and other thermal treatment processes involving various powder materials and small granular materials.

4. Controlled Processing Atmosphere
The kiln supports heat treatment under a protective atmosphere, meeting the processing requirements of specialized materials.