Coating Granulation – Rotary Furnace

ZDZN TECH has independently developed high-performance ring roller mills and shaping machines, designed for the mechanical spheroidization of natural graphite.
The ring roller mill efficiently grinds flake graphite into fine powder, creating favorable conditions for the subsequent shaping process. During grinding, the powder surface is modified, enhancing specific surface area and tap density. These improvements significantly boost electrochemical performance, leading to higher first coulombic efficiency, greater reversible capacity, and excellent cycle stability in lithium-ion batteries.

High Crushing Rate

High Yield

Adopting a multi-stage structure with multiple temperature zones and a wrapped inner wall uniform heating process to improve material yield and quality.

Multifunction

Reduce Costs

The rotary furnace can achieve energy recovery and utilization, and the heat generated by the incineration of volatile raw materials can be reused in the furnace. Through the waste heat recovery system, the recovered heat is used for heating and drying.

Equipment Advantages

Accurate and controllable particle size

Designed for natural graphite coating granulation process, the quality of granulation particle size can be adjusted, and the particle size distribution is concentrated.

Exhaust gas treatment

Equipped with monitors that provide real-time feedback on equipment status, effectively controlling the separation, purification, and treatment of exhaust gases, acidic gases, etc.

Multi functional production

Adjustable residence time and process of materials in the furnace to meet the time, temperature zone and control temperature requirements of different materials.

No blockage

The gas pipeline system is equipped with a high-temperature purifier to filter dust, and the pipeline has smoke and gas tracing function to ensure that tar does not condense.

Process Purpose

Improve initial efficiency

Surface treatment of electrode materials, such as coating or doping, to reduce side reactions with the electrolyte.

Improving cycling performance

Coating a stable layer of material on the surface of the anode material to reduce side reactions and enhance structural stability.

Technical Parameter

ParameterValue
Capacity15 ton per day
Operating temperature~1050 ℃
Discharge temperature≤80 ℃
Power925 kW
Temperature zones12
Furnace atmosphereOxygen / Nitrogen
Atmosphere consumption15-25 m³/h
Cooling water consumption50-70 m³/h

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