What Are the Key Technical Specifications of a 20L Vacuum Planetary Mixer?

Q: What is the exact working capacity of a 20L Vacuum Planetary Mixer?

A: The "20L" designation refers to the working volume—the actual usable capacity for production. The SXJ-20 model has a design volume of 29L and a working volume of 20L . This distinction is crucial because the additional headspace allows for material expansion during mixing and heating, preventing overflow and ensuring the vacuum system operates effectively. The tank inner dimensions are φ350mm × 300mm, providing adequate space for planetary motion and material turnover .

Q: What are the power ratings for the mixing and dispersing systems on the 20L model?

A: The 20L Vacuum Planetary Mixer is equipped with a robust dual-drive system. The low-speed mixing motor is rated at 2.2KW and operates at a self-rotary speed of 0-98 rpm, with a revolution speed of 0-42 rpm . The high-speed disperser is rated at 3KW, capable of reaching up to 2,980 rpm . This power combination ensures thorough mixing and efficient dispersion for high-viscosity materials like lithium battery slurries, where uniform distribution of conductive additives and binders is critical.

Q: What vacuum level can the 20L machine achieve, and why does it matter?

A: The 20L Vacuum Planetary Mixer can achieve a vacuum level of -0.09 to -0.098 MPa . This is a critical parameter because the vacuum removes entrapped air from the product during mixing. Removing air prevents oxidation, eliminates bubbles that can cause coating defects in battery electrodes, and improves product density and performance. For lithium battery production, vacuum degassing ensures slurry homogeneity and reduces pitting in electrode coatings.

Q: What materials are used in the construction of the 20L machine?

A: The 20L Vacuum Planetary Mixer is constructed from high-quality stainless steel to ensure durability and hygiene. The parts that come into direct contact with the product are made of SUS304 stainless steel, which offers excellent corrosion resistance . The tank features a three-layer jacket design for heating and cooling, with an insulation layer to maintain temperature stability. All contact surfaces are precision-machined and polished to prevent material adhesion and ensure easy cleaning.

Q: What is the total power consumption of the 20L model?

A: The total installed power for the SXJ-20 model is approximately 5.2KW (mixing + disperser, excluding vacuum pump) . This figure includes the 2.2KW mixer motor, the 3KW disperser motor, and the control system. Understanding the total power requirement is essential for facility planning and ensuring your electrical infrastructure can support the machine's operation, particularly in laboratory or pilot-plant environments.