High-Performance Twin Screw Extruder Barrel for Lithium Battery Slurry Mixing — Long-Life, Stable, and Precise Solution

In lithium battery manufacturing, the consistency of slurry mixing directly affects electrode uniformity and cell performance.
The twin screw extruder barrel plays a key role in maintaining this consistency. Designed for continuous slurry processes, this barrel ensures uniform dispersion, temperature control, and chemical compatibility even under long production cycles.

Constructed with a 304 stainless steel outer shell and an alloy liner made from ZT615 nickel-chromium or WR13 high-chromium material, it delivers strong protection against corrosion and abrasion in NMP-based mixing environments.

Lithium battery slurry contains highly corrosive and abrasive components, such as NMP solvent and conductive additives like carbon black and CNTs.
Conventional barrels often degrade quickly, leading to contamination and inconsistent slurry viscosity.

The ZT615 liner offers excellent corrosion resistance against organic solvents and binders, while WR13 provides enhanced wear protection for abrasive material systems.
Both materials help maintain a stable internal surface, ensuring extended operation and consistent product quality.

Each barrel is manufactured under strict machining tolerances of ±0.02 mm to ensure perfect alignment and uniform heat transfer.
The internal water channel design allows efficient cooling and prevents thermal fatigue, maintaining process stability during high-speed continuous operation.

By combining chemical durability with high mechanical strength, the barrel significantly reduces replacement frequency and unplanned maintenance.
Users benefit from:

• Long-term operational stability
• Lower maintenance cost per production cycle
• Consistent slurry quality across multiple batches

• High chemical and wear resistance for demanding slurry environments
• Excellent dimensional accuracy for stable twin screw operation
• Reduced contamination and extended barrel life
• Efficient temperature control through internal water channels
• Customizable design for different mixing equipment and process conditions

Q1: Why is corrosion resistance important in lithium battery slurry mixing?
Because the slurry contains NMP solvent and active materials that can chemically attack conventional steel surfaces, corrosion-resistant alloys ensure purity and long service life.

Q2: What is the difference between ZT615 and WR13 liner materials?
ZT615 Ni-Cr alloy is optimized for corrosion protection in solvent-rich environments, while WR13 High-Cr alloy provides greater resistance to abrasion from conductive materials.

Q3: Can this barrel be customized for different twin screw extruder models?
Yes. Barrel dimensions, water channel design, and liner composition can be customized based on the user’s extrusion system and process parameters.

Q4: How can users extend barrel service life in slurry production?
By maintaining proper cooling circulation, monitoring slurry composition, and selecting the appropriate liner alloy based on slurry abrasiveness and solvent type.