Sigma blade mixer

continuoussolid/liquidfor battery materials

Overview
Sigma mixer is suitable for the production of battery negative electrode materials, especially when handling high viscosity slurries. Its uniform mixing and temperature control capabilities make it an ideal device for producing battery negative electrode materials. When selecting specific equipment, selection should be based on configuration needs and material properties.

Sigma Mixer Structure
Sigma mixer consists of a stirring tank, a ∑-shaped stirring paddle, a driving system, a heating or cooling system and other parts. The material is mostly stainless steel or other corrosion-resistant materials.

Working Principle
Sigma mixer is equipped with 2 intermeshing ∑-shaped stirring blades. These blades rotate at different speeds in the mixing tank, generating strong shearing force and kneading effect.

Application in Production of Battery Negative Electrode Materials

• 1. Mixing and Kneading: Add graphite powder, carbon black, binders and other additives into the mixing tank, and form a uniform slurry through the powerful mixing and kneading action of sigma mixer.
• 2. Vacuum Degassing: In some production processes, air bubbles in the slurry need to be removed and the mixing can be performed under vacuum conditions. Sigma mixer can be equipped with a vacuum system to achieve this.
• 3. Continuous Production: To improve production efficiency, sigma mixer can be linked with other equipment to achieve continuous production processes.

Advantages for Producing Battery Negative Electrode Materials

• 1. Handling High Viscosity Slurries: Strong shear force and kneading action effectively handle high viscosity materials and ensure uniform mixing.
• 2. Mix Evenly: Ensures uniform distribution of graphite, carbon black and binders to maintain electrochemical performance and batch-to-batch consistency.
• 3. Efficient Dispersion: High shear disperses particles to avoid agglomeration and improve material performance.
• 4. Temperature Control: Can be equipped with heating or cooling systems (jacket/heat transfer oil/steam/water cooling) to precisely control mixing temperatures.
• 5. Shorten Mixing Time: Efficient mixing and kneading shorten processing times and increase throughput.

Additional Functional Notes
The machine supports options such as vacuum operation for degassing and can be adapted for continuous integration with upstream/downstream equipment. Typical material construction uses stainless steel or other corrosion-resistant materials suitable for battery material production processes.

Technical specifications

• Model / Series: Sigma mixer
• Main functions: mixing, kneading, crushing, dispersing, repolymerization
• Mixing elements: two intermeshing ∑-shaped blades rotating at different speeds
• Typical materials: stainless steel or corrosion-resistant alloys for contact parts
• Temperature control: heating and cooling system options (jacketed tank, heat transfer oil, steam heating, water cooling)
• Vacuum capability: optional vacuum system for degassing
• Suitable for: high-viscosity slurries used in battery negative electrode material production (graphite, carbon black, binders)
• Discharge options: bottom discharge / hydraulic dumping / screw extrusion (depending on configuration)
• Key benefits: uniform mixing, strong shear/kneading, efficient dispersion, precise temperature control, reduced mixing time